Battlepass fix

Two issues caught in a real-client smoke run against the freshly
bootstrapped DB:

1. NRE in ShadowverseTranslationMiddleware for parameterless actions.
   Five new actions (Sleeve.Info, LeaderSkin.{Ids,Products},
   ItemPurchase.Info, SpotCardExchange.Top) took no parameters, but
   the middleware does
   `endpointDescriptor.Parameters.FirstOrDefault().ParameterType`
   to discover the request DTO — `FirstOrDefault` returns null on a
   zero-param action and `.ParameterType` NREs. Tests didn't catch it
   because the test client POSTs plain JSON, bypassing this path.
   Fix: each action now takes `BaseRequest _` matching the codebase
   convention (PuzzleController.Info, BattlePassController.Info, etc.),
   plus the middleware throws an actionable
   InvalidOperationException pointing at the convention so the next
   contributor doesn't repeat the mistake.

2. Leader-skin set sale showed up as "FREE / Claim" with empty
   Includes panel after the viewer bought every skin in a series
   with no configured bonus items. Root cause: ComputeRewardStatus
   emitted status=1 (not_got) when set_sales_status != 0 regardless
   of whether rewards.items was empty, and SkinPurchaseInfoTask.
   CreateSetSaleInfo flags `is_free=true` on (is_completed &&
   not_got). Prod ships status=0 when items is empty even with
   set_sales_status==1 — we now mirror that.

504 tests still pass.

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

SVSim.Bootstrap/Data/seeds/achievement-catalog.json

@@ -0,0 +1,638 @@
+[
+  {
+    "achievement_type": 1,
+    "level": 1,
+    "name": "Win 5 ranked matches as Forestcraft",
+    "require_number": 5,
+    "reward_type": 9,
+    "reward_detail_id": 0,
+    "reward_number": 20,
+    "order_num": 1,
+    "event_type": "ranked_win:forestcraft",
+    "event_arg": null
+  },
+  {
+    "achievement_type": 2,
+    "level": 2,
+    "name": "Win 20 ranked matches as Swordcraft",
+    "require_number": 20,
+    "reward_type": 1,
+    "reward_detail_id": 0,
+    "reward_number": 20,
+    "order_num": 2,
+    "event_type": "ranked_win:swordcraft",
+    "event_arg": null
+  },
+  {
+    "achievement_type": 3,
+    "level": 1,
+    "name": "Win 5 ranked matches as Runecraft",
+    "require_number": 5,
+    "reward_type": 9,
+    "reward_detail_id": 0,
+    "reward_number": 20,
+    "order_num": 3,
+    "event_type": "ranked_win:runecraft",
+    "event_arg": null
+  },
+  {
+    "achievement_type": 4,
+    "level": 1,
+    "name": "Win 5 ranked matches as Dragoncraft",
+    "require_number": 5,
+    "reward_type": 9,
+    "reward_detail_id": 0,
+    "reward_number": 20,
+    "order_num": 4,
+    "event_type": "ranked_win:dragoncraft",
+    "event_arg": null
+  },
+  {
+    "achievement_type": 5,
+    "level": 1,
+    "name": "Win 5 ranked matches as Shadowcraft",
+    "require_number": 5,
+    "reward_type": 9,
+    "reward_detail_id": 0,
+    "reward_number": 20,
+    "order_num": 5,
+    "event_type": "ranked_win:shadowcraft",
+    "event_arg": null
+  },
+  {
+    "achievement_type": 6,
+    "level": 3,
+    "name": "Win 50 ranked matches as Bloodcraft",
+    "require_number": 50,
+    "reward_type": 8,
+    "reward_detail_id": 106001,
+    "reward_number": 1,
+    "order_num": 6,
+    "event_type": "ranked_win:bloodcraft",
+    "event_arg": null
+  },
+  {
+    "achievement_type": 7,
+    "level": 1,
+    "name": "Win 5 ranked matches as Havencraft",
+    "require_number": 5,
+    "reward_type": 9,
+    "reward_detail_id": 0,
+    "reward_number": 20,
+    "order_num": 7,
+    "event_type": "ranked_win:havencraft",
+    "event_arg": null
+  },
+  {
+    "achievement_type": 8,
+    "level": 1,
+    "name": "Win 5 ranked matches as Portalcraft",
+    "require_number": 5,
+    "reward_type": 9,
+    "reward_detail_id": 0,
+    "reward_number": 20,
+    "order_num": 8,
+    "event_type": "ranked_win:portalcraft",
+    "event_arg": null
+  },
+  {
+    "achievement_type": 11,
+    "level": 1,
+    "name": "Reach level 10 in Forestcraft",
+    "require_number": 10,
+    "reward_type": 9,
+    "reward_detail_id": 0,
+    "reward_number": 20,
+    "order_num": 9,
+    "event_type": "class_level_up:forestcraft",
+    "event_arg": null
+  },
+  {
+    "achievement_type": 12,
+    "level": 6,
+    "name": "Reach level 35 in Swordcraft",
+    "require_number": 35,
+    "reward_type": 5,
+    "reward_detail_id": 100211061,
+    "reward_number": 3,
+    "order_num": 10,
+    "event_type": "class_level_up:swordcraft",
+    "event_arg": null
+  },
+  {
+    "achievement_type": 12,
+    "level": 7,
+    "name": "Reach level 40 in Swordcraft",
+    "require_number": 40,
+    "reward_type": 5,
+    "reward_detail_id": 100214011,
+    "reward_number": 3,
+    "order_num": 10,
+    "event_type": "class_level_up:swordcraft",
+    "event_arg": null
+  },
+  {
+    "achievement_type": 13,
+    "level": 1,
+    "name": "Reach level 10 in Runecraft",
+    "require_number": 10,
+    "reward_type": 9,
+    "reward_detail_id": 0,
+    "reward_number": 20,
+    "order_num": 11,
+    "event_type": "class_level_up:runecraft",
+    "event_arg": null
+  },
+  {
+    "achievement_type": 14,
+    "level": 3,
+    "name": "Reach level 20 in Dragoncraft",
+    "require_number": 20,
+    "reward_type": 5,
+    "reward_detail_id": 100011041,
+    "reward_number": 3,
+    "order_num": 12,
+    "event_type": "class_level_up:dragoncraft",
+    "event_arg": null
+  },
+  {
+    "achievement_type": 15,
+    "level": 2,
+    "name": "Reach level 15 in Shadowcraft",
+    "require_number": 15,
+    "reward_type": 9,
+    "reward_detail_id": 0,
+    "reward_number": 30,
+    "order_num": 13,
+    "event_type": "class_level_up:shadowcraft",
+    "event_arg": null
+  },
+  {
+    "achievement_type": 16,
+    "level": 6,
+    "name": "Reach level 35 in Bloodcraft",
+    "require_number": 35,
+    "reward_type": 5,
+    "reward_detail_id": 100614011,
+    "reward_number": 3,
+    "order_num": 14,
+    "event_type": "class_level_up:bloodcraft",
+    "event_arg": null
+  },
+  {
+    "achievement_type": 17,
+    "level": 1,
+    "name": "Reach level 10 in Havencraft",
+    "require_number": 10,
+    "reward_type": 9,
+    "reward_detail_id": 0,
+    "reward_number": 20,
+    "order_num": 15,
+    "event_type": "class_level_up:havencraft",
+    "event_arg": null
+  },
+  {
+    "achievement_type": 18,
+    "level": 1,
+    "name": "Reach level 10 in Portalcraft",
+    "require_number": 10,
+    "reward_type": 9,
+    "reward_detail_id": 0,
+    "reward_number": 20,
+    "order_num": 16,
+    "event_type": "class_level_up:portalcraft",
+    "event_arg": null
+  },
+  {
+    "achievement_type": 28,
+    "level": 1,
+    "name": "Cleared Chapter 8: The Morning Star with 7 leaders without skipping the battle",
+    "require_number": 7,
+    "reward_type": 8,
+    "reward_detail_id": 110001,
+    "reward_number": 1,
+    "order_num": 17,
+    "event_type": "story_chapter_finish:main",
+    "event_arg": null
+  },
+  {
+    "achievement_type": 29,
+    "level": 1,
+    "name": "Cleared Chapter 12 of The Morning Star: Conclusion",
+    "require_number": 1,
+    "reward_type": 8,
+    "reward_detail_id": 110006,
+    "reward_number": 1,
+    "order_num": 71,
+    "event_type": "story_chapter_finish:main",
+    "event_arg": null
+  },
+  {
+    "achievement_type": 31,
+    "level": 3,
+    "name": "Win 50 ranked matches",
+    "require_number": 50,
+    "reward_type": 9,
+    "reward_detail_id": 0,
+    "reward_number": 20,
+    "order_num": 18,
+    "event_type": "ranked_win",
+    "event_arg": null
+  },
+  {
+    "achievement_type": 32,
+    "level": 1,
+    "name": "Win 5 Challenge matches",
+    "require_number": 5,
+    "reward_type": 4,
+    "reward_detail_id": 10001,
+    "reward_number": 1,
+    "order_num": 19,
+    "event_type": "challenge_win",
+    "event_arg": null
+  },
+  {
+    "achievement_type": 41,
+    "level": 1,
+    "name": "Win all 5 Challenge matches 3 times",
+    "require_number": 3,
+    "reward_type": 4,
+    "reward_detail_id": 10001,
+    "reward_number": 1,
+    "order_num": 20,
+    "event_type": "challenge_full_clear",
+    "event_arg": null
+  },
+  {
+    "achievement_type": 50,
+    "level": 3,
+    "name": "Achieve Beginner 3 rank (Throwback Rotation or Unlimited)",
+    "require_number": 1,
+    "reward_type": 9,
+    "reward_detail_id": 0,
+    "reward_number": 100,
+    "order_num": 25,
+    "event_type": "rank_achieved:beginner",
+    "event_arg": null
+  },
+  {
+    "achievement_type": 51,
+    "level": 4,
+    "name": "Achieve D3 rank (Throwback Rotation or Unlimited)",
+    "require_number": 1,
+    "reward_type": 9,
+    "reward_detail_id": 0,
+    "reward_number": 100,
+    "order_num": 29,
+    "event_type": "rank_achieved:d",
+    "event_arg": null
+  },
+  {
+    "achievement_type": 52,
+    "level": 3,
+    "name": "Achieve C2 rank (Throwback Rotation or Unlimited)",
+    "require_number": 1,
+    "reward_type": 9,
+    "reward_detail_id": 0,
+    "reward_number": 100,
+    "order_num": 32,
+    "event_type": "rank_achieved:c",
+    "event_arg": null
+  },
+  {
+    "achievement_type": 53,
+    "level": 1,
+    "name": "Achieve B0 rank (Throwback Rotation or Unlimited)",
+    "require_number": 1,
+    "reward_type": 8,
+    "reward_detail_id": 201003,
+    "reward_number": 1,
+    "order_num": 34,
+    "event_type": "rank_achieved:b",
+    "event_arg": null
+  },
+  {
+    "achievement_type": 54,
+    "level": 1,
+    "name": "Achieve A0 rank (Throwback Rotation or Unlimited)",
+    "require_number": 1,
+    "reward_type": 8,
+    "reward_detail_id": 201004,
+    "reward_number": 1,
+    "order_num": 38,
+    "event_type": "rank_achieved:a",
+    "event_arg": null
+  },
+  {
+    "achievement_type": 55,
+    "level": 1,
+    "name": "Achieve AA0 rank (Throwback Rotation or Unlimited)",
+    "require_number": 1,
+    "reward_type": 8,
+    "reward_detail_id": 201005,
+    "reward_number": 1,
+    "order_num": 42,
+    "event_type": "rank_achieved:aa",
+    "event_arg": null
+  },
+  {
+    "achievement_type": 56,
+    "level": 1,
+    "name": "Achieve Master rank (Throwback Rotation or Unlimited)",
+    "require_number": 1,
+    "reward_type": 8,
+    "reward_detail_id": 300002,
+    "reward_number": 1,
+    "order_num": 46,
+    "event_type": "rank_achieved:master",
+    "event_arg": null
+  },
+  {
+    "achievement_type": 61,
+    "level": 1,
+    "name": "Defeat Arisa on Elite difficulty (Practice)",
+    "require_number": 1,
+    "reward_type": 9,
+    "reward_detail_id": 0,
+    "reward_number": 200,
+    "order_num": 47,
+    "event_type": "practice_win:elite:arisa",
+    "event_arg": null
+  },
+  {
+    "achievement_type": 62,
+    "level": 1,
+    "name": "Defeat Erika on Elite difficulty (Practice)",
+    "require_number": 1,
+    "reward_type": 9,
+    "reward_detail_id": 0,
+    "reward_number": 200,
+    "order_num": 48,
+    "event_type": "practice_win:elite:erika",
+    "event_arg": null
+  },
+  {
+    "achievement_type": 63,
+    "level": 1,
+    "name": "Defeat Isabelle on Elite difficulty (Practice)",
+    "require_number": 1,
+    "reward_type": 9,
+    "reward_detail_id": 0,
+    "reward_number": 200,
+    "order_num": 49,
+    "event_type": "practice_win:elite:isabelle",
+    "event_arg": null
+  },
+  {
+    "achievement_type": 64,
+    "level": 1,
+    "name": "Defeat Rowen on Elite difficulty (Practice)",
+    "require_number": 1,
+    "reward_type": 9,
+    "reward_detail_id": 0,
+    "reward_number": 200,
+    "order_num": 50,
+    "event_type": "practice_win:elite:rowen",
+    "event_arg": null
+  },
+  {
+    "achievement_type": 65,
+    "level": 1,
+    "name": "Defeat Luna on Elite difficulty (Practice)",
+    "require_number": 1,
+    "reward_type": 9,
+    "reward_detail_id": 0,
+    "reward_number": 200,
+    "order_num": 51,
+    "event_type": "practice_win:elite:luna",
+    "event_arg": null
+  },
+  {
+    "achievement_type": 66,
+    "level": 1,
+    "name": "Defeat Urias on Elite difficulty (Practice)",
+    "require_number": 1,
+    "reward_type": 9,
+    "reward_detail_id": 0,
+    "reward_number": 200,
+    "order_num": 52,
+    "event_type": "practice_win:elite:urias",
+    "event_arg": null
+  },
+  {
+    "achievement_type": 67,
+    "level": 1,
+    "name": "Defeat Eris on Elite difficulty (Practice)",
+    "require_number": 1,
+    "reward_type": 9,
+    "reward_detail_id": 0,
+    "reward_number": 200,
+    "order_num": 53,
+    "event_type": "practice_win:elite:eris",
+    "event_arg": null
+  },
+  {
+    "achievement_type": 68,
+    "level": 7,
+    "name": "Battle 7 players in Private Match (without quitting).",
+    "require_number": 7,
+    "reward_type": 9,
+    "reward_detail_id": 0,
+    "reward_number": 100,
+    "order_num": 70,
+    "event_type": "private_match_distinct_opponent",
+    "event_arg": null
+  },
+  {
+    "achievement_type": 71,
+    "level": 1,
+    "name": "Defeat Arisa on Elite 2 difficulty (Practice)",
+    "require_number": 1,
+    "reward_type": 9,
+    "reward_detail_id": 0,
+    "reward_number": 200,
+    "order_num": 55,
+    "event_type": "practice_win:elite2:arisa",
+    "event_arg": null
+  },
+  {
+    "achievement_type": 72,
+    "level": 1,
+    "name": "Defeat Erika on Elite 2 difficulty (Practice)",
+    "require_number": 1,
+    "reward_type": 9,
+    "reward_detail_id": 0,
+    "reward_number": 200,
+    "order_num": 56,
+    "event_type": "practice_win:elite2:erika",
+    "event_arg": null
+  },
+  {
+    "achievement_type": 73,
+    "level": 1,
+    "name": "Defeat Isabelle on Elite 2 difficulty (Practice)",
+    "require_number": 1,
+    "reward_type": 9,
+    "reward_detail_id": 0,
+    "reward_number": 200,
+    "order_num": 57,
+    "event_type": "practice_win:elite2:isabelle",
+    "event_arg": null
+  },
+  {
+    "achievement_type": 74,
+    "level": 1,
+    "name": "Defeat Rowen on Elite 2 difficulty (Practice)",
+    "require_number": 1,
+    "reward_type": 9,
+    "reward_detail_id": 0,
+    "reward_number": 200,
+    "order_num": 58,
+    "event_type": "practice_win:elite2:rowen",
+    "event_arg": null
+  },
+  {
+    "achievement_type": 75,
+    "level": 1,
+    "name": "Defeat Luna on Elite 2 difficulty (Practice)",
+    "require_number": 1,
+    "reward_type": 9,
+    "reward_detail_id": 0,
+    "reward_number": 200,
+    "order_num": 59,
+    "event_type": "practice_win:elite2:luna",
+    "event_arg": null
+  },
+  {
+    "achievement_type": 76,
+    "level": 1,
+    "name": "Defeat Urias on Elite 2 difficulty (Practice)",
+    "require_number": 1,
+    "reward_type": 9,
+    "reward_detail_id": 0,
+    "reward_number": 200,
+    "order_num": 60,
+    "event_type": "practice_win:elite2:urias",
+    "event_arg": null
+  },
+  {
+    "achievement_type": 77,
+    "level": 1,
+    "name": "Defeat Eris on Elite 2 difficulty (Practice)",
+    "require_number": 1,
+    "reward_type": 9,
+    "reward_detail_id": 0,
+    "reward_number": 200,
+    "order_num": 61,
+    "event_type": "practice_win:elite2:eris",
+    "event_arg": null
+  },
+  {
+    "achievement_type": 81,
+    "level": 1,
+    "name": "Defeat Arisa on Elite 3 difficulty (Practice)",
+    "require_number": 1,
+    "reward_type": 9,
+    "reward_detail_id": 0,
+    "reward_number": 200,
+    "order_num": 63,
+    "event_type": "practice_win:elite3:arisa",
+    "event_arg": null
+  },
+  {
+    "achievement_type": 82,
+    "level": 1,
+    "name": "Defeat Erika on Elite 3 difficulty (Practice)",
+    "require_number": 1,
+    "reward_type": 9,
+    "reward_detail_id": 0,
+    "reward_number": 200,
+    "order_num": 64,
+    "event_type": "practice_win:elite3:erika",
+    "event_arg": null
+  },
+  {
+    "achievement_type": 83,
+    "level": 1,
+    "name": "Defeat Isabelle on Elite 3 difficulty (Practice)",
+    "require_number": 1,
+    "reward_type": 9,
+    "reward_detail_id": 0,
+    "reward_number": 200,
+    "order_num": 65,
+    "event_type": "practice_win:elite3:isabelle",
+    "event_arg": null
+  },
+  {
+    "achievement_type": 84,
+    "level": 1,
+    "name": "Defeat Rowen on Elite 3 difficulty (Practice)",
+    "require_number": 1,
+    "reward_type": 9,
+    "reward_detail_id": 0,
+    "reward_number": 200,
+    "order_num": 66,
+    "event_type": "practice_win:elite3:rowen",
+    "event_arg": null
+  },
+  {
+    "achievement_type": 85,
+    "level": 1,
+    "name": "Defeat Luna on Elite 3 difficulty (Practice)",
+    "require_number": 1,
+    "reward_type": 9,
+    "reward_detail_id": 0,
+    "reward_number": 200,
+    "order_num": 67,
+    "event_type": "practice_win:elite3:luna",
+    "event_arg": null
+  },
+  {
+    "achievement_type": 86,
+    "level": 1,
+    "name": "Defeat Urias on Elite 3 difficulty (Practice)",
+    "require_number": 1,
+    "reward_type": 9,
+    "reward_detail_id": 0,
+    "reward_number": 200,
+    "order_num": 68,
+    "event_type": "practice_win:elite3:urias",
+    "event_arg": null
+  },
+  {
+    "achievement_type": 87,
+    "level": 1,
+    "name": "Defeat Eris on Elite 3 difficulty (Practice)",
+    "require_number": 1,
+    "reward_type": 9,
+    "reward_detail_id": 0,
+    "reward_number": 200,
+    "order_num": 69,
+    "event_type": "practice_win:elite3:eris",
+    "event_arg": null
+  },
+  {
+    "achievement_type": 168,
+    "level": 1,
+    "name": "Defeat Yuwan on Elite difficulty (Practice)",
+    "require_number": 1,
+    "reward_type": 9,
+    "reward_detail_id": 0,
+    "reward_number": 200,
+    "order_num": 54,
+    "event_type": "practice_win:elite:yuwan",
+    "event_arg": null
+  },
+  {
+    "achievement_type": 178,
+    "level": 1,
+    "name": "Defeat Yuwan on Elite 2 difficulty (Practice)",
+    "require_number": 1,
+    "reward_type": 9,
+    "reward_detail_id": 0,
+    "reward_number": 200,
+    "order_num": 62,
+    "event_type": "practice_win:elite2:yuwan",
+    "event_arg": null
+  }
+]

SVSim.Bootstrap/Data/seeds/bp-monthly-missions.json

@@ -0,0 +1,67 @@
+[
+  {
+    "year": 2026,
+    "month": 5,
+    "order_num": 0,
+    "name": "Win 25 matches (Ranked or Arena)",
+    "require_number": 25,
+    "battle_pass_point": 1000,
+    "event_type": "ranked_or_arena_win",
+    "event_arg": null,
+    "reward_type": 7,
+    "reward_detail_id": 1215110100,
+    "reward_number": 1
+  },
+  {
+    "year": 2026,
+    "month": 5,
+    "order_num": 1,
+    "name": "Win 50 matches (Ranked or Arena)",
+    "require_number": 50,
+    "battle_pass_point": 1000,
+    "event_type": "ranked_or_arena_win",
+    "event_arg": null,
+    "reward_type": 6,
+    "reward_detail_id": 1215110100,
+    "reward_number": 1
+  },
+  {
+    "year": 2026,
+    "month": 5,
+    "order_num": 2,
+    "name": "Win 75 matches (Ranked or Arena)",
+    "require_number": 75,
+    "battle_pass_point": 1500,
+    "event_type": "ranked_or_arena_win",
+    "event_arg": null,
+    "reward_type": 7,
+    "reward_detail_id": 1298310100,
+    "reward_number": 1
+  },
+  {
+    "year": 2026,
+    "month": 5,
+    "order_num": 3,
+    "name": "Win 100 matches (Ranked or Arena)",
+    "require_number": 100,
+    "battle_pass_point": 1500,
+    "event_type": "ranked_or_arena_win",
+    "event_arg": null,
+    "reward_type": 6,
+    "reward_detail_id": 1298310100,
+    "reward_number": 1
+  },
+  {
+    "year": 2026,
+    "month": 5,
+    "order_num": 4,
+    "name": "Play 5 Challenge matches (without quitting)",
+    "require_number": 5,
+    "battle_pass_point": 500,
+    "event_type": "challenge_play",
+    "event_arg": null,
+    "reward_type": null,
+    "reward_detail_id": null,
+    "reward_number": null
+  }
+]

SVSim.Bootstrap/Data/seeds/item-purchase.json

@@ -0,0 +1,38 @@
+[
+  {
+    "purchase_id": 1,
+    "require_item_type": 1,
+    "require_item_id": 0,
+    "require_item_num": 5000,
+    "purchase_item_type": 4,
+    "purchase_item_id": 1000,
+    "purchase_item_num": 1,
+    "purchase_name": "[b]One Time Only![/b] Seer's Globe x1",
+    "is_monthly_reset": false,
+    "purchase_limit": 1
+  },
+  {
+    "purchase_id": 100002,
+    "require_item_type": 4,
+    "require_item_id": 1001,
+    "require_item_num": 5,
+    "purchase_item_type": 4,
+    "purchase_item_id": 1000,
+    "purchase_item_num": 1,
+    "purchase_name": "",
+    "is_monthly_reset": true,
+    "purchase_limit": 3
+  },
+  {
+    "purchase_id": 100003,
+    "require_item_type": 1,
+    "require_item_id": 0,
+    "require_item_num": 30000,
+    "purchase_item_type": 4,
+    "purchase_item_id": 1000,
+    "purchase_item_num": 1,
+    "purchase_name": "",
+    "is_monthly_reset": true,
+    "purchase_limit": 10
+  }
+]

SVSim.Bootstrap/Data/seeds/items.json

@@ -0,0 +1,362 @@
+[
+  {
+    "item_id": 1,
+    "name": "Challenge Ticket",
+    "type": 1,
+    "thumbnail_path": "ticket_1"
+  },
+  {
+    "item_id": 2,
+    "name": "Grand Prix Ticket",
+    "type": 4,
+    "thumbnail_path": "ticket_colosseum"
+  },
+  {
+    "item_id": 1000,
+    "name": "Seer's Globe",
+    "type": 3,
+    "thumbnail_path": "thumbnail_orb"
+  },
+  {
+    "item_id": 1001,
+    "name": "Seer's Globe Shards",
+    "type": 5,
+    "thumbnail_path": "thumbnail_orb_piece"
+  },
+  {
+    "item_id": 2001,
+    "name": "Umamusume Bingo Ticket",
+    "type": 6,
+    "thumbnail_path": "ticket_2001"
+  },
+  {
+    "item_id": 2002,
+    "name": "Chiikawa Bingo Ticket",
+    "type": 6,
+    "thumbnail_path": "ticket_2002"
+  },
+  {
+    "item_id": 2003,
+    "name": "7th Anniversary Ticket",
+    "type": 6,
+    "thumbnail_path": "ticket_2003"
+  },
+  {
+    "item_id": 2004,
+    "name": "Fennie Bingo Ticket",
+    "type": 6,
+    "thumbnail_path": "ticket_2004"
+  },
+  {
+    "item_id": 10001,
+    "name": "Classic Card Pack Ticket",
+    "type": 2,
+    "thumbnail_path": "ticket_10001"
+  },
+  {
+    "item_id": 10002,
+    "name": "Darkness Evolved Card Pack Ticket",
+    "type": 2,
+    "thumbnail_path": "ticket_10002"
+  },
+  {
+    "item_id": 10003,
+    "name": "Rise of Bahamut Card Pack Ticket",
+    "type": 2,
+    "thumbnail_path": "ticket_10003"
+  },
+  {
+    "item_id": 10004,
+    "name": "Tempest of the Gods Card Pack Ticket",
+    "type": 2,
+    "thumbnail_path": "ticket_10004"
+  },
+  {
+    "item_id": 10005,
+    "name": "Wonderland Dreams Card Pack Ticket",
+    "type": 2,
+    "thumbnail_path": "ticket_10005"
+  },
+  {
+    "item_id": 10006,
+    "name": "Starforged Legends Card Pack Ticket",
+    "type": 2,
+    "thumbnail_path": "ticket_10006"
+  },
+  {
+    "item_id": 10007,
+    "name": "Chronogenesis Card Pack Ticket",
+    "type": 2,
+    "thumbnail_path": "ticket_10007"
+  },
+  {
+    "item_id": 10008,
+    "name": "Dawnbreak, Nightedge Card Pack Ticket",
+    "type": 2,
+    "thumbnail_path": "ticket_10008"
+  },
+  {
+    "item_id": 10009,
+    "name": "Brigade of the Sky Card Pack Ticket",
+    "type": 2,
+    "thumbnail_path": "ticket_10009"
+  },
+  {
+    "item_id": 10010,
+    "name": "Omen of the Ten Card Pack Ticket",
+    "type": 2,
+    "thumbnail_path": "ticket_10010"
+  },
+  {
+    "item_id": 10011,
+    "name": "Altersphere Card Pack Ticket",
+    "type": 2,
+    "thumbnail_path": "ticket_10011"
+  },
+  {
+    "item_id": 10012,
+    "name": "Steel Rebellion Card Pack Ticket",
+    "type": 2,
+    "thumbnail_path": "ticket_10012"
+  },
+  {
+    "item_id": 10013,
+    "name": "Rebirth of Glory Card Pack Ticket",
+    "type": 2,
+    "thumbnail_path": "ticket_10013"
+  },
+  {
+    "item_id": 10014,
+    "name": "Verdant Conflict Card Pack Ticket",
+    "type": 2,
+    "thumbnail_path": "ticket_10014"
+  },
+  {
+    "item_id": 10015,
+    "name": "Ultimate Colosseum Card Pack Ticket",
+    "type": 2,
+    "thumbnail_path": "ticket_10015"
+  },
+  {
+    "item_id": 10016,
+    "name": "World Uprooted Card Pack Ticket",
+    "type": 2,
+    "thumbnail_path": "ticket_10016"
+  },
+  {
+    "item_id": 10017,
+    "name": "Fortune's Hand Card Pack Ticket",
+    "type": 2,
+    "thumbnail_path": "ticket_10017"
+  },
+  {
+    "item_id": 10018,
+    "name": "Storm Over Rivayle Card Pack Ticket",
+    "type": 2,
+    "thumbnail_path": "ticket_10018"
+  },
+  {
+    "item_id": 10019,
+    "name": "Eternal Awakening Card Pack Ticket",
+    "type": 2,
+    "thumbnail_path": "ticket_10019"
+  },
+  {
+    "item_id": 10020,
+    "name": "Darkness Over Vellsar Card Pack Ticket",
+    "type": 2,
+    "thumbnail_path": "ticket_10020"
+  },
+  {
+    "item_id": 10021,
+    "name": "Renascent Chronicles Card Pack Ticket",
+    "type": 2,
+    "thumbnail_path": "ticket_10021"
+  },
+  {
+    "item_id": 10022,
+    "name": "Dawn of Calamity Card Pack Ticket",
+    "type": 2,
+    "thumbnail_path": "ticket_10022"
+  },
+  {
+    "item_id": 10023,
+    "name": "Omen of Storms Card Pack Ticket",
+    "type": 2,
+    "thumbnail_path": "ticket_10023"
+  },
+  {
+    "item_id": 10024,
+    "name": "Edge of Paradise Card Pack Ticket",
+    "type": 2,
+    "thumbnail_path": "ticket_10024"
+  },
+  {
+    "item_id": 10025,
+    "name": "Roar of the Godwyrm Card Pack Ticket",
+    "type": 2,
+    "thumbnail_path": "ticket_10025"
+  },
+  {
+    "item_id": 10026,
+    "name": "Celestial Dragonblade Card Pack Ticket",
+    "type": 2,
+    "thumbnail_path": "ticket_10026"
+  },
+  {
+    "item_id": 10027,
+    "name": "Eightfold Abyss: Azvaldt Card Pack Ticket",
+    "type": 2,
+    "thumbnail_path": "ticket_10027"
+  },
+  {
+    "item_id": 10028,
+    "name": "Academy of Ages Card Pack Ticket",
+    "type": 2,
+    "thumbnail_path": "ticket_10028"
+  },
+  {
+    "item_id": 10029,
+    "name": "Heroes of Rivenbrandt Card Pack Ticket",
+    "type": 2,
+    "thumbnail_path": "ticket_10029"
+  },
+  {
+    "item_id": 10030,
+    "name": "Order Shift Card Pack Ticket",
+    "type": 2,
+    "thumbnail_path": "ticket_10030"
+  },
+  {
+    "item_id": 10031,
+    "name": "Resurgent Legends Card Pack Ticket",
+    "type": 2,
+    "thumbnail_path": "ticket_10031"
+  },
+  {
+    "item_id": 10032,
+    "name": "Heroes of Shadowverse Card Pack Ticket",
+    "type": 2,
+    "thumbnail_path": "ticket_10032"
+  },
+  {
+    "item_id": 60001,
+    "name": "4th Birthday Temporary Deck Ticket",
+    "type": 6,
+    "thumbnail_path": "ticket_60001"
+  },
+  {
+    "item_id": 60019,
+    "name": "Eternal Awakening Temporary Deck Ticket",
+    "type": 6,
+    "thumbnail_path": "ticket_60019"
+  },
+  {
+    "item_id": 60020,
+    "name": "Darkness Over Vellsar Temporary Deck Ticket",
+    "type": 6,
+    "thumbnail_path": "ticket_60020"
+  },
+  {
+    "item_id": 60021,
+    "name": "Renascent Chronicles Temporary Deck Ticket",
+    "type": 6,
+    "thumbnail_path": "ticket_60021"
+  },
+  {
+    "item_id": 60022,
+    "name": "Dawn of Calamity Temporary Deck Ticket",
+    "type": 6,
+    "thumbnail_path": "ticket_60022"
+  },
+  {
+    "item_id": 60023,
+    "name": "Omen of Storms Temporary Deck Ticket",
+    "type": 6,
+    "thumbnail_path": "ticket_60023"
+  },
+  {
+    "item_id": 60024,
+    "name": "Edge of Paradise Temporary Deck Ticket",
+    "type": 6,
+    "thumbnail_path": "ticket_60024"
+  },
+  {
+    "item_id": 60025,
+    "name": "Roar of the Godwyrm Temporary Deck Ticket",
+    "type": 6,
+    "thumbnail_path": "ticket_60025"
+  },
+  {
+    "item_id": 60026,
+    "name": "Celestial Dragonblade Temporary Deck Ticket",
+    "type": 6,
+    "thumbnail_path": "ticket_60026"
+  },
+  {
+    "item_id": 60027,
+    "name": "Eightfold Abyss: Azvaldt Temporary Deck Ticket",
+    "type": 6,
+    "thumbnail_path": "ticket_60027"
+  },
+  {
+    "item_id": 60028,
+    "name": "Academy of Ages Temporary Deck Ticket",
+    "type": 6,
+    "thumbnail_path": "ticket_60028"
+  },
+  {
+    "item_id": 60029,
+    "name": "Heroes of Rivenbrandt Temporary Deck Ticket",
+    "type": 6,
+    "thumbnail_path": "ticket_60029"
+  },
+  {
+    "item_id": 60030,
+    "name": "Order Shift Temporary Deck Ticket",
+    "type": 6,
+    "thumbnail_path": "ticket_60030"
+  },
+  {
+    "item_id": 60031,
+    "name": "Resurgent Legends Temporary Deck Ticket",
+    "type": 6,
+    "thumbnail_path": "ticket_60031"
+  },
+  {
+    "item_id": 60032,
+    "name": "Heroes of Shadowverse Temporary Deck Ticket",
+    "type": 6,
+    "thumbnail_path": "ticket_60032"
+  },
+  {
+    "item_id": 70001,
+    "name": "4th Birthday Leader Ticket",
+    "type": 7,
+    "thumbnail_path": "ticket_70001"
+  },
+  {
+    "item_id": 70002,
+    "name": "Champion's Battle Leader Ticket",
+    "type": 7,
+    "thumbnail_path": "ticket_70002"
+  },
+  {
+    "item_id": 80001,
+    "name": "Throwback Rotation Card Pack Ticket",
+    "type": 2,
+    "thumbnail_path": "ticket_80001"
+  },
+  {
+    "item_id": 90001,
+    "name": "Legendary Card Pack Ticket",
+    "type": 2,
+    "thumbnail_path": "ticket_90001"
+  },
+  {
+    "item_id": 92001,
+    "name": "4th Birthday Card Pack Ticket",
+    "type": 2,
+    "thumbnail_path": "ticket_92001"
+  }
+]

SVSim.Bootstrap/Data/seeds/mission-catalog.json

@@ -0,0 +1,77 @@
+[
+  {
+    "id": 12,
+    "name": "Win 2 ranked matches",
+    "lot_type": 2,
+    "require_number": 2,
+    "reward_type": 9,
+    "reward_detail_id": 0,
+    "reward_number": 30,
+    "battle_pass_point": 50,
+    "default_flag": false,
+    "event_type": "ranked_win",
+    "event_arg": null,
+    "start_time": 1779634776,
+    "end_time": null
+  },
+  {
+    "id": 16,
+    "name": "Win 1 match as Swordcraft (Ranked, Unranked, or Arena)",
+    "lot_type": 2,
+    "require_number": 1,
+    "reward_type": 9,
+    "reward_detail_id": 0,
+    "reward_number": 20,
+    "battle_pass_point": 50,
+    "default_flag": false,
+    "event_type": "ranked_win:swordcraft",
+    "event_arg": null,
+    "start_time": 1505581389,
+    "end_time": null
+  },
+  {
+    "id": 20,
+    "name": "Win 1 match as Bloodcraft (Ranked, Unranked, or Arena)",
+    "lot_type": 2,
+    "require_number": 1,
+    "reward_type": 9,
+    "reward_detail_id": 0,
+    "reward_number": 20,
+    "battle_pass_point": 50,
+    "default_flag": false,
+    "event_type": "ranked_win:bloodcraft",
+    "event_arg": null,
+    "start_time": 1505659633,
+    "end_time": null
+  },
+  {
+    "id": 332,
+    "name": "Daily Mission: Win 3 matches (Ranked, Unranked, or Arena)",
+    "lot_type": 6,
+    "require_number": 3,
+    "reward_type": 12,
+    "reward_detail_id": 0,
+    "reward_number": 400,
+    "battle_pass_point": 50,
+    "default_flag": true,
+    "event_type": "daily_match_win",
+    "event_arg": null,
+    "start_time": 1725317128,
+    "end_time": 1893542399
+  },
+  {
+    "id": 505,
+    "name": "Play 30 followers (Ranked, Unranked, or Arena)",
+    "lot_type": 2,
+    "require_number": 30,
+    "reward_type": 9,
+    "reward_detail_id": 0,
+    "reward_number": 50,
+    "battle_pass_point": 50,
+    "default_flag": false,
+    "event_type": "play_followers",
+    "event_arg": null,
+    "start_time": 1779772990,
+    "end_time": null
+  }
+]

SVSim.Bootstrap/Importers/AchievementCatalogImporter.cs

@@ -0,0 +1,60 @@
+using Microsoft.EntityFrameworkCore;
+using SVSim.Bootstrap.Models.Seed;
+using SVSim.Database;
+using SVSim.Database.Models;
+
+namespace SVSim.Bootstrap.Importers;
+
+/// <summary>
+/// Idempotent upsert of achievement-catalog rows from <c>seeds/achievement-catalog.json</c>.
+/// Keyed by (AchievementType, Level) so re-running with new captures grows the ladder.
+/// Rows missing from the seed are LEFT INTACT.
+/// </summary>
+public class AchievementCatalogImporter
+{
+    public async Task<int> ImportAsync(SVSimDbContext context, string seedDir)
+    {
+        var seed = SeedLoader.LoadList<AchievementCatalogSeed>(Path.Combine(seedDir, "achievement-catalog.json"));
+        if (seed.Count == 0)
+        {
+            Console.WriteLine("[AchievementCatalogImporter] No seed rows; skipping.");
+            return 0;
+        }
+
+        var existing = await context.AchievementCatalog
+            .ToDictionaryAsync(e => (e.AchievementType, e.Level));
+        int created = 0, updated = 0;
+        var unmappedTypes = new HashSet<int>();
+        foreach (var s in seed)
+        {
+            if (s.AchievementType == 0 || s.Level == 0) continue;
+            var key = (s.AchievementType, s.Level);
+            var entry = existing.TryGetValue(key, out var ex) ? ex : new AchievementCatalogEntry
+            {
+                AchievementType = s.AchievementType,
+                Level = s.Level,
+            };
+            entry.Name = s.Name;
+            entry.RequireNumber = s.RequireNumber;
+            entry.RewardType = s.RewardType;
+            entry.RewardDetailId = s.RewardDetailId;
+            entry.RewardNumber = s.RewardNumber;
+            entry.OrderNum = s.OrderNum;
+            entry.EventType = s.EventType;
+            entry.EventArg = s.EventArg;
+            if (ex is null) { context.AchievementCatalog.Add(entry); existing[key] = entry; created++; }
+            else updated++;
+            if (s.EventType is null) unmappedTypes.Add(s.AchievementType);
+        }
+
+        await context.SaveChangesAsync();
+        Console.WriteLine($"[AchievementCatalogImporter] +{created}/~{updated}");
+        if (unmappedTypes.Count > 0)
+        {
+            Console.WriteLine($"[AchievementCatalogImporter] WARN: {unmappedTypes.Count} types " +
+                              $"with no event_type: [{string.Join(", ", unmappedTypes.OrderBy(x => x))}] — " +
+                              "add to ACHIEVEMENT_EVENT_MAP in data_dumps/extract/extract-achievements.py");
+        }
+        return created + updated;
+    }
+}

SVSim.Bootstrap/Importers/BattlePassMonthlyMissionImporter.cs

@@ -0,0 +1,61 @@
+using Microsoft.EntityFrameworkCore;
+using SVSim.Bootstrap.Models.Seed;
+using SVSim.Database;
+using SVSim.Database.Models;
+
+namespace SVSim.Bootstrap.Importers;
+
+/// <summary>
+/// Idempotent upsert of BP monthly mission rows from <c>seeds/bp-monthly-missions.json</c>.
+/// Keyed by (Year, Month, OrderNum). Rows missing from the seed are LEFT INTACT.
+/// </summary>
+public class BattlePassMonthlyMissionImporter
+{
+    public async Task<int> ImportAsync(SVSimDbContext context, string seedDir)
+    {
+        var seed = SeedLoader.LoadList<BattlePassMonthlyMissionSeed>(
+            Path.Combine(seedDir, "bp-monthly-missions.json"));
+        if (seed.Count == 0)
+        {
+            Console.WriteLine("[BattlePassMonthlyMissionImporter] No seed rows; skipping.");
+            return 0;
+        }
+
+        var existing = await context.BattlePassMonthlyMissions
+            .ToDictionaryAsync(e => (e.Year, e.Month, e.OrderNum));
+        int created = 0, updated = 0;
+        var unmapped = new List<string>();
+        foreach (var s in seed)
+        {
+            if (s.Year == 0 || s.Month == 0) continue;
+            var key = (s.Year, s.Month, s.OrderNum);
+            var entry = existing.TryGetValue(key, out var ex)
+                ? ex
+                : new BattlePassMonthlyMissionEntry
+                {
+                    Year = s.Year, Month = s.Month, OrderNum = s.OrderNum,
+                };
+            entry.Name = s.Name;
+            entry.RequireNumber = s.RequireNumber;
+            entry.BattlePassPoint = s.BattlePassPoint;
+            entry.RewardType = s.RewardType;
+            entry.RewardDetailId = s.RewardDetailId;
+            entry.RewardNumber = s.RewardNumber;
+            entry.EventType = s.EventType;
+            entry.EventArg = s.EventArg;
+            if (ex is null) { context.BattlePassMonthlyMissions.Add(entry); existing[key] = entry; created++; }
+            else updated++;
+            if (s.EventType is null) unmapped.Add($"{s.Year}-{s.Month:00}/{s.OrderNum}");
+        }
+
+        await context.SaveChangesAsync();
+        Console.WriteLine($"[BattlePassMonthlyMissionImporter] +{created}/~{updated}");
+        if (unmapped.Count > 0)
+        {
+            Console.WriteLine($"[BattlePassMonthlyMissionImporter] WARN: {unmapped.Count} rows " +
+                              $"with no event_type: [{string.Join(", ", unmapped)}] — add name to " +
+                              "BP_MONTHLY_EVENT_MAP in data_dumps/extract/extract-bp-monthly-missions.py");
+        }
+        return created + updated;
+    }
+}

SVSim.Bootstrap/Importers/ItemImporter.cs

@@ -0,0 +1,52 @@
+using Microsoft.EntityFrameworkCore;
+using SVSim.Bootstrap.Models.Seed;
+using SVSim.Database;
+using SVSim.Database.Models;
+
+namespace SVSim.Bootstrap.Importers;
+
+/// <summary>
+/// Idempotent upsert of the item catalog from <c>seeds/items.json</c>. Source is the client's
+/// <c>item_master.csv</c> + <c>itemtext.json</c> (extracted via
+/// <c>data_dumps/extract/extract-items.py</c>). Rows missing from the seed are LEFT INTACT.
+/// </summary>
+public class ItemImporter
+{
+    public async Task<int> ImportAsync(SVSimDbContext context, string seedDir)
+    {
+        string path = Path.Combine(seedDir, "items.json");
+        var seed = SeedLoader.LoadList<ItemSeed>(path);
+        if (seed.Count == 0)
+        {
+            Console.WriteLine("[ItemImporter] No seed rows; skipping.");
+            return 0;
+        }
+
+        var existing = await context.Items.ToDictionaryAsync(e => e.Id);
+        int created = 0, updated = 0;
+
+        foreach (var s in seed)
+        {
+            if (s.ItemId == 0) continue;
+
+            var entry = existing.TryGetValue(s.ItemId, out var ex)
+                ? ex : new ItemEntry { Id = s.ItemId };
+
+            entry.Name = s.Name;
+            entry.Type = s.Type;
+            entry.ThumbnailPath = s.ThumbnailPath;
+
+            if (ex is null)
+            {
+                context.Items.Add(entry);
+                existing[s.ItemId] = entry;
+                created++;
+            }
+            else updated++;
+        }
+
+        await context.SaveChangesAsync();
+        Console.WriteLine($"[ItemImporter] +{created}/~{updated}");
+        return created + updated;
+    }
+}

SVSim.Bootstrap/Importers/ItemPurchaseImporter.cs

@@ -0,0 +1,59 @@
+using Microsoft.EntityFrameworkCore;
+using SVSim.Bootstrap.Models.Seed;
+using SVSim.Database;
+using SVSim.Database.Models;
+
+namespace SVSim.Bootstrap.Importers;
+
+/// <summary>
+/// Idempotent upsert of the item-purchase catalog from <c>seeds/item-purchase.json</c>.
+/// Source is the wire <c>/item_purchase/info</c> response, extracted via
+/// <c>data_dumps/extract/extract-item-purchase.py</c>. Rows missing from the seed are LEFT INTACT.
+/// </summary>
+public class ItemPurchaseImporter
+{
+    public async Task<int> ImportAsync(SVSimDbContext context, string seedDir)
+    {
+        string path = Path.Combine(seedDir, "item-purchase.json");
+        var seed = SeedLoader.LoadList<ItemPurchaseSeed>(path);
+        if (seed.Count == 0)
+        {
+            Console.WriteLine("[ItemPurchaseImporter] No seed rows; skipping.");
+            return 0;
+        }
+
+        var existing = await context.ItemPurchaseCatalog.ToDictionaryAsync(e => e.Id);
+        int created = 0, updated = 0;
+
+        foreach (var s in seed)
+        {
+            if (s.PurchaseId == 0) continue;
+
+            var entry = existing.TryGetValue(s.PurchaseId, out var ex)
+                ? ex : new ItemPurchaseCatalogEntry { Id = s.PurchaseId };
+
+            entry.RequireItemType = s.RequireItemType;
+            entry.RequireItemId = s.RequireItemId;
+            entry.RequireItemNum = s.RequireItemNum;
+            entry.PurchaseItemType = s.PurchaseItemType;
+            entry.PurchaseItemId = s.PurchaseItemId;
+            entry.PurchaseItemNum = s.PurchaseItemNum;
+            entry.PurchaseName = s.PurchaseName;
+            entry.IsMonthlyReset = s.IsMonthlyReset;
+            entry.PurchaseLimit = s.PurchaseLimit;
+            entry.IsEnabled = true;
+
+            if (ex is null)
+            {
+                context.ItemPurchaseCatalog.Add(entry);
+                existing[s.PurchaseId] = entry;
+                created++;
+            }
+            else updated++;
+        }
+
+        await context.SaveChangesAsync();
+        Console.WriteLine($"[ItemPurchaseImporter] +{created}/~{updated}");
+        return created + updated;
+    }
+}

SVSim.Bootstrap/Importers/LeaderSkinShopImporter.cs

@@ -0,0 +1,115 @@
+using Microsoft.EntityFrameworkCore;
+using SVSim.Bootstrap.Models.Seed;
+using SVSim.Database;
+using SVSim.Database.Models;
+
+namespace SVSim.Bootstrap.Importers;
+
+/// <summary>
+/// Idempotent upsert of the leader-skin-shop catalog from <c>seeds/leader-skin-shop.json</c>.
+/// Mirror of <see cref="SleeveShopImporter"/>. Source is the wire
+/// <c>/leader_skin/products</c> response, extracted via
+/// <c>data_dumps/extract/extract-leader-skin-shop.py</c>. Rows missing from the seed are LEFT INTACT.
+/// </summary>
+public class LeaderSkinShopImporter
+{
+    public async Task<int> ImportAsync(SVSimDbContext context, string seedDir)
+    {
+        string path = Path.Combine(seedDir, "leader-skin-shop.json");
+        var seed = SeedLoader.LoadList<LeaderSkinShopSeriesSeed>(path);
+        if (seed.Count == 0)
+        {
+            Console.WriteLine("[LeaderSkinShopImporter] No seed rows; skipping.");
+            return 0;
+        }
+
+        var existingSeries = await context.LeaderSkinShopSeries
+            .Include(s => s.SetCompletionRewards)
+            .Include(s => s.Products).ThenInclude(p => p.Rewards)
+            .ToDictionaryAsync(s => s.Id);
+
+        int createdSeries = 0, updatedSeries = 0, createdProducts = 0, updatedProducts = 0;
+
+        foreach (var s in seed)
+        {
+            if (s.SeriesId == 0) continue;
+
+            if (!existingSeries.TryGetValue(s.SeriesId, out var series))
+            {
+                series = new LeaderSkinShopSeriesEntry { Id = s.SeriesId };
+                context.LeaderSkinShopSeries.Add(series);
+                existingSeries[s.SeriesId] = series;
+                createdSeries++;
+            }
+            else updatedSeries++;
+
+            series.IsNew = s.IsNew;
+            series.IsEnabled = true;
+            series.SetSalesStatus = s.SetSalesStatus;
+            series.SetPriceCrystal = s.SetPriceCrystal;
+            series.SetPriceRupy = s.SetPriceRupy;
+            series.SetPriceTicket = s.SetPriceTicket;
+            series.SetPriceTicketId = s.SetPriceTicketId;
+            // SetCompletionRewardStatus stays at the catalog default 0 — per-viewer claim state
+            // is computed at request time from ViewerLeaderSkinSetClaim, not from this column.
+            series.SetCompletionRewardStatus = 0;
+
+            // Replace owned collections wholesale on rerun.
+            series.SetCompletionRewards.Clear();
+            foreach (var r in s.SetCompletionRewards.OrderBy(r => r.OrderIndex))
+            {
+                series.SetCompletionRewards.Add(new LeaderSkinShopSeriesRewardEntry
+                {
+                    OrderIndex = r.OrderIndex,
+                    RewardType = r.RewardType,
+                    RewardDetailId = r.RewardDetailId,
+                    RewardNumber = r.RewardNumber,
+                });
+            }
+
+            var existingProducts = series.Products.ToDictionary(p => p.Id);
+            foreach (var p in s.Products)
+            {
+                if (p.ProductId == 0) continue;
+
+                if (!existingProducts.TryGetValue(p.ProductId, out var product))
+                {
+                    product = new LeaderSkinShopProductEntry { Id = p.ProductId };
+                    series.Products.Add(product);
+                    createdProducts++;
+                }
+                else updatedProducts++;
+
+                product.SeriesId = s.SeriesId;
+                product.LeaderSkinId = p.LeaderSkinId;
+                product.ProductNameKey = p.ProductNameKey;
+                product.IntroductionKey = p.IntroductionKey;
+                product.CvNameKey = p.CvNameKey;
+                product.SinglePriceCrystal = p.SinglePriceCrystal;
+                product.SinglePriceRupy = p.SinglePriceRupy;
+                product.SinglePriceTicket = p.SinglePriceTicket;
+                product.TicketNumber = p.TicketNumber;
+                product.TicketItemId = p.TicketItemId;
+                product.IsEnabled = true;
+
+                product.Rewards.Clear();
+                foreach (var r in p.Rewards.OrderBy(r => r.OrderIndex))
+                {
+                    product.Rewards.Add(new LeaderSkinShopProductRewardEntry
+                    {
+                        OrderIndex = r.OrderIndex,
+                        RewardType = r.RewardType,
+                        RewardDetailId = r.RewardDetailId,
+                        RewardNumber = r.RewardNumber,
+                    });
+                }
+            }
+        }
+
+        await context.SaveChangesAsync();
+        Console.WriteLine(
+            $"[LeaderSkinShopImporter] series +{createdSeries}/~{updatedSeries}, " +
+            $"products +{createdProducts}/~{updatedProducts}");
+        return createdSeries + updatedSeries;
+    }
+}

SVSim.Bootstrap/Importers/MissionCatalogImporter.cs

@@ -0,0 +1,57 @@
+using Microsoft.EntityFrameworkCore;
+using SVSim.Bootstrap.Models.Seed;
+using SVSim.Database;
+using SVSim.Database.Models;
+
+namespace SVSim.Bootstrap.Importers;
+
+/// <summary>
+/// Idempotent upsert of mission catalog rows from <c>seeds/mission-catalog.json</c>.
+/// Rows missing from the seed are LEFT INTACT (so hand-added catalog rows survive).
+/// </summary>
+public class MissionCatalogImporter
+{
+    public async Task<int> ImportAsync(SVSimDbContext context, string seedDir)
+    {
+        var seed = SeedLoader.LoadList<MissionCatalogSeed>(Path.Combine(seedDir, "mission-catalog.json"));
+        if (seed.Count == 0)
+        {
+            Console.WriteLine("[MissionCatalogImporter] No seed rows; skipping.");
+            return 0;
+        }
+
+        var existing = await context.MissionCatalog.ToDictionaryAsync(e => e.Id);
+        int created = 0, updated = 0;
+        var unmapped = new List<int>();
+        foreach (var s in seed)
+        {
+            if (s.Id == 0) continue;
+            var entry = existing.TryGetValue(s.Id, out var ex) ? ex : new MissionCatalogEntry { Id = s.Id };
+            entry.Name = s.Name;
+            entry.LotType = s.LotType;
+            entry.RequireNumber = s.RequireNumber;
+            entry.RewardType = s.RewardType;
+            entry.RewardDetailId = s.RewardDetailId;
+            entry.RewardNumber = s.RewardNumber;
+            entry.BattlePassPoint = s.BattlePassPoint;
+            entry.DefaultFlag = s.DefaultFlag;
+            entry.EventType = s.EventType;
+            entry.EventArg = s.EventArg;
+            entry.StartTime = s.StartTime;
+            entry.EndTime = s.EndTime;
+            if (ex is null) { context.MissionCatalog.Add(entry); existing[s.Id] = entry; created++; }
+            else updated++;
+            if (s.EventType is null) unmapped.Add(s.Id);
+        }
+
+        await context.SaveChangesAsync();
+        Console.WriteLine($"[MissionCatalogImporter] +{created}/~{updated}");
+        if (unmapped.Count > 0)
+        {
+            Console.WriteLine($"[MissionCatalogImporter] WARN: {unmapped.Count} mission_ids with " +
+                              $"no event_type: [{string.Join(", ", unmapped)}] — add to MISSION_EVENT_MAP " +
+                              "in data_dumps/extract/extract-missions.py and re-run the extractor");
+        }
+        return created + updated;
+    }
+}

SVSim.Bootstrap/Importers/SleeveShopImporter.cs

@@ -0,0 +1,89 @@
+using Microsoft.EntityFrameworkCore;
+using SVSim.Bootstrap.Models.Seed;
+using SVSim.Database;
+using SVSim.Database.Models;
+
+namespace SVSim.Bootstrap.Importers;
+
+/// <summary>
+/// Idempotent upsert of the sleeve-shop catalog from <c>seeds/sleeve-shop.json</c>.
+/// Source is the wire <c>/sleeve/info</c> response, extracted via
+/// <c>data_dumps/extract/extract-sleeve-shop.py</c>. Mirror of the BuildDeck importer pattern.
+/// Rows missing from the seed are LEFT INTACT (so manual test fixtures survive re-runs).
+/// </summary>
+public class SleeveShopImporter
+{
+    public async Task<int> ImportAsync(SVSimDbContext context, string seedDir)
+    {
+        string path = Path.Combine(seedDir, "sleeve-shop.json");
+        var seed = SeedLoader.LoadList<SleeveShopSeriesSeed>(path);
+        if (seed.Count == 0)
+        {
+            Console.WriteLine("[SleeveShopImporter] No seed rows; skipping.");
+            return 0;
+        }
+
+        var existingSeries = await context.SleeveShopSeries
+            .Include(s => s.Products).ThenInclude(p => p.Rewards)
+            .ToDictionaryAsync(s => s.Id);
+
+        int createdSeries = 0, updatedSeries = 0, createdProducts = 0, updatedProducts = 0;
+
+        foreach (var s in seed)
+        {
+            if (s.SeriesId == 0) continue;
+
+            if (!existingSeries.TryGetValue(s.SeriesId, out var series))
+            {
+                series = new SleeveShopSeriesEntry { Id = s.SeriesId };
+                context.SleeveShopSeries.Add(series);
+                existingSeries[s.SeriesId] = series;
+                createdSeries++;
+            }
+            else updatedSeries++;
+
+            series.IsNew = s.IsNew;
+            series.IsEnabled = true;
+
+            var existingProducts = series.Products.ToDictionary(p => p.Id);
+            foreach (var p in s.Products)
+            {
+                if (p.ProductId == 0) continue;
+
+                if (!existingProducts.TryGetValue(p.ProductId, out var product))
+                {
+                    product = new SleeveShopProductEntry { Id = p.ProductId };
+                    series.Products.Add(product);
+                    createdProducts++;
+                }
+                else updatedProducts++;
+
+                product.SeriesId = s.SeriesId;
+                product.NameKey = p.NameKey;
+                product.PriceCrystal = p.PriceCrystal;
+                product.PriceRupy = p.PriceRupy;
+                product.IsEnabled = true;
+
+                // Rewards: replace wholesale (owned collection — EF will issue DELETE+INSERT
+                // anyway, and the wire shape is canonical per re-extract).
+                product.Rewards.Clear();
+                foreach (var r in p.Rewards.OrderBy(r => r.OrderIndex))
+                {
+                    product.Rewards.Add(new SleeveShopProductRewardEntry
+                    {
+                        OrderIndex = r.OrderIndex,
+                        RewardType = r.RewardType,
+                        RewardDetailId = r.RewardDetailId,
+                        RewardNumber = r.RewardNumber,
+                    });
+                }
+            }
+        }
+
+        await context.SaveChangesAsync();
+        Console.WriteLine(
+            $"[SleeveShopImporter] series +{createdSeries}/~{updatedSeries}, " +
+            $"products +{createdProducts}/~{updatedProducts}");
+        return createdSeries + updatedSeries;
+    }
+}

SVSim.Bootstrap/Importers/SpotCardExchangeImporter.cs

@@ -0,0 +1,55 @@
+using Microsoft.EntityFrameworkCore;
+using SVSim.Bootstrap.Models.Seed;
+using SVSim.Database;
+using SVSim.Database.Models;
+
+namespace SVSim.Bootstrap.Importers;
+
+/// <summary>
+/// Idempotent upsert of the spot card exchange catalog from <c>seeds/spot-card-exchange.json</c>.
+/// Source is the wire <c>/spot_card_exchange/top</c> response, extracted via
+/// <c>data_dumps/extract/extract-spot-card-exchange.py</c>. Rows missing from the seed are
+/// LEFT INTACT.
+/// </summary>
+public class SpotCardExchangeImporter
+{
+    public async Task<int> ImportAsync(SVSimDbContext context, string seedDir)
+    {
+        string path = Path.Combine(seedDir, "spot-card-exchange.json");
+        var seed = SeedLoader.LoadList<SpotCardExchangeSeed>(path);
+        if (seed.Count == 0)
+        {
+            Console.WriteLine("[SpotCardExchangeImporter] No seed rows; skipping.");
+            return 0;
+        }
+
+        var existing = await context.SpotCardExchangeCatalog.ToDictionaryAsync(e => e.Id);
+        int created = 0, updated = 0;
+
+        foreach (var s in seed)
+        {
+            if (s.CardId == 0) continue;
+
+            var entry = existing.TryGetValue(s.CardId, out var ex)
+                ? ex : new SpotCardExchangeEntry { Id = s.CardId };
+
+            entry.ClassId = s.ClassId;
+            entry.ExchangePoint = s.ExchangePoint;
+            entry.TsRotationId = s.TsRotationId;
+            entry.IsPreRelease = s.IsPreRelease;
+            entry.IsEnabled = true;
+
+            if (ex is null)
+            {
+                context.SpotCardExchangeCatalog.Add(entry);
+                existing[s.CardId] = entry;
+                created++;
+            }
+            else updated++;
+        }
+
+        await context.SaveChangesAsync();
+        Console.WriteLine($"[SpotCardExchangeImporter] +{created}/~{updated}");
+        return created + updated;
+    }
+}

SVSim.Bootstrap/Models/Seed/AchievementCatalogSeed.cs

@@ -0,0 +1,17 @@
+using System.Text.Json.Serialization;
+
+namespace SVSim.Bootstrap.Models.Seed;
+
+public sealed class AchievementCatalogSeed
+{
+    [JsonPropertyName("achievement_type")] public int AchievementType { get; set; }
+    [JsonPropertyName("level")] public int Level { get; set; }
+    [JsonPropertyName("name")] public string Name { get; set; } = "";
+    [JsonPropertyName("require_number")] public int RequireNumber { get; set; }
+    [JsonPropertyName("reward_type")] public int RewardType { get; set; }
+    [JsonPropertyName("reward_detail_id")] public long RewardDetailId { get; set; }
+    [JsonPropertyName("reward_number")] public int RewardNumber { get; set; }
+    [JsonPropertyName("order_num")] public int OrderNum { get; set; }
+    [JsonPropertyName("event_type")] public string? EventType { get; set; }
+    [JsonPropertyName("event_arg")] public int? EventArg { get; set; }
+}

SVSim.Bootstrap/Models/Seed/BattlePassMonthlyMissionSeed.cs

@@ -0,0 +1,18 @@
+using System.Text.Json.Serialization;
+
+namespace SVSim.Bootstrap.Models.Seed;
+
+public sealed class BattlePassMonthlyMissionSeed
+{
+    [JsonPropertyName("year")] public int Year { get; set; }
+    [JsonPropertyName("month")] public int Month { get; set; }
+    [JsonPropertyName("order_num")] public int OrderNum { get; set; }
+    [JsonPropertyName("name")] public string Name { get; set; } = "";
+    [JsonPropertyName("require_number")] public int RequireNumber { get; set; }
+    [JsonPropertyName("battle_pass_point")] public int BattlePassPoint { get; set; }
+    [JsonPropertyName("reward_type")] public int? RewardType { get; set; }
+    [JsonPropertyName("reward_detail_id")] public long? RewardDetailId { get; set; }
+    [JsonPropertyName("reward_number")] public int? RewardNumber { get; set; }
+    [JsonPropertyName("event_type")] public string? EventType { get; set; }
+    [JsonPropertyName("event_arg")] public int? EventArg { get; set; }
+}

SVSim.Bootstrap/Models/Seed/ItemPurchaseSeed.cs

@@ -0,0 +1,17 @@
+using System.Text.Json.Serialization;
+
+namespace SVSim.Bootstrap.Models.Seed;
+
+public sealed class ItemPurchaseSeed
+{
+    [JsonPropertyName("purchase_id")] public int PurchaseId { get; set; }
+    [JsonPropertyName("require_item_type")] public int RequireItemType { get; set; }
+    [JsonPropertyName("require_item_id")] public long RequireItemId { get; set; }
+    [JsonPropertyName("require_item_num")] public int RequireItemNum { get; set; }
+    [JsonPropertyName("purchase_item_type")] public int PurchaseItemType { get; set; }
+    [JsonPropertyName("purchase_item_id")] public long PurchaseItemId { get; set; }
+    [JsonPropertyName("purchase_item_num")] public int PurchaseItemNum { get; set; }
+    [JsonPropertyName("purchase_name")] public string PurchaseName { get; set; } = "";
+    [JsonPropertyName("is_monthly_reset")] public bool IsMonthlyReset { get; set; }
+    [JsonPropertyName("purchase_limit")] public int PurchaseLimit { get; set; }
+}

SVSim.Bootstrap/Models/Seed/ItemSeed.cs

@@ -0,0 +1,11 @@
+using System.Text.Json.Serialization;
+
+namespace SVSim.Bootstrap.Models.Seed;
+
+public sealed class ItemSeed
+{
+    [JsonPropertyName("item_id")] public int ItemId { get; set; }
+    [JsonPropertyName("name")] public string Name { get; set; } = "";
+    [JsonPropertyName("type")] public int Type { get; set; }
+    [JsonPropertyName("thumbnail_path")] public string ThumbnailPath { get; set; } = "";
+}

SVSim.Bootstrap/Models/Seed/LeaderSkinShopSeed.cs

@@ -0,0 +1,39 @@
+using System.Text.Json.Serialization;
+
+namespace SVSim.Bootstrap.Models.Seed;
+
+public sealed class LeaderSkinShopSeriesSeed
+{
+    [JsonPropertyName("series_id")] public int SeriesId { get; set; }
+    [JsonPropertyName("is_new")] public bool IsNew { get; set; }
+    [JsonPropertyName("set_sales_status")] public int SetSalesStatus { get; set; }
+    [JsonPropertyName("set_price_crystal")] public int? SetPriceCrystal { get; set; }
+    [JsonPropertyName("set_price_rupy")] public int? SetPriceRupy { get; set; }
+    [JsonPropertyName("set_price_ticket")] public int? SetPriceTicket { get; set; }
+    [JsonPropertyName("set_price_ticket_id")] public long? SetPriceTicketId { get; set; }
+    [JsonPropertyName("set_completion_rewards")] public List<LeaderSkinShopRewardSeed> SetCompletionRewards { get; set; } = new();
+    [JsonPropertyName("products")] public List<LeaderSkinShopProductSeed> Products { get; set; } = new();
+}
+
+public sealed class LeaderSkinShopProductSeed
+{
+    [JsonPropertyName("product_id")] public int ProductId { get; set; }
+    [JsonPropertyName("leader_skin_id")] public int LeaderSkinId { get; set; }
+    [JsonPropertyName("product_name_key")] public string ProductNameKey { get; set; } = "";
+    [JsonPropertyName("introduction_key")] public string IntroductionKey { get; set; } = "";
+    [JsonPropertyName("cv_name_key")] public string CvNameKey { get; set; } = "";
+    [JsonPropertyName("single_price_crystal")] public int? SinglePriceCrystal { get; set; }
+    [JsonPropertyName("single_price_rupy")] public int? SinglePriceRupy { get; set; }
+    [JsonPropertyName("single_price_ticket")] public int? SinglePriceTicket { get; set; }
+    [JsonPropertyName("ticket_number")] public int? TicketNumber { get; set; }
+    [JsonPropertyName("ticket_item_id")] public long? TicketItemId { get; set; }
+    [JsonPropertyName("rewards")] public List<LeaderSkinShopRewardSeed> Rewards { get; set; } = new();
+}
+
+public sealed class LeaderSkinShopRewardSeed
+{
+    [JsonPropertyName("order_index")] public int OrderIndex { get; set; }
+    [JsonPropertyName("reward_type")] public int RewardType { get; set; }
+    [JsonPropertyName("reward_detail_id")] public long RewardDetailId { get; set; }
+    [JsonPropertyName("reward_number")] public int RewardNumber { get; set; }
+}

SVSim.Bootstrap/Models/Seed/MissionCatalogSeed.cs

@@ -0,0 +1,21 @@
+using System.Text.Json.Serialization;
+
+namespace SVSim.Bootstrap.Models.Seed;
+
+/// <summary>Mirrors a single entry in <c>seeds/mission-catalog.json</c>.</summary>
+public sealed class MissionCatalogSeed
+{
+    [JsonPropertyName("id")] public int Id { get; set; }
+    [JsonPropertyName("name")] public string Name { get; set; } = "";
+    [JsonPropertyName("lot_type")] public int LotType { get; set; }
+    [JsonPropertyName("require_number")] public int RequireNumber { get; set; }
+    [JsonPropertyName("reward_type")] public int RewardType { get; set; }
+    [JsonPropertyName("reward_detail_id")] public long RewardDetailId { get; set; }
+    [JsonPropertyName("reward_number")] public int RewardNumber { get; set; }
+    [JsonPropertyName("battle_pass_point")] public int BattlePassPoint { get; set; }
+    [JsonPropertyName("default_flag")] public bool DefaultFlag { get; set; }
+    [JsonPropertyName("event_type")] public string? EventType { get; set; }
+    [JsonPropertyName("event_arg")] public int? EventArg { get; set; }
+    [JsonPropertyName("start_time")] public long StartTime { get; set; }
+    [JsonPropertyName("end_time")] public long? EndTime { get; set; }
+}

SVSim.Bootstrap/Models/Seed/SleeveShopSeed.cs

@@ -0,0 +1,27 @@
+using System.Text.Json.Serialization;
+
+namespace SVSim.Bootstrap.Models.Seed;
+
+public sealed class SleeveShopSeriesSeed
+{
+    [JsonPropertyName("series_id")] public int SeriesId { get; set; }
+    [JsonPropertyName("is_new")] public bool IsNew { get; set; }
+    [JsonPropertyName("products")] public List<SleeveShopProductSeed> Products { get; set; } = new();
+}
+
+public sealed class SleeveShopProductSeed
+{
+    [JsonPropertyName("product_id")] public int ProductId { get; set; }
+    [JsonPropertyName("name_key")] public string NameKey { get; set; } = "";
+    [JsonPropertyName("price_crystal")] public int? PriceCrystal { get; set; }
+    [JsonPropertyName("price_rupy")] public int? PriceRupy { get; set; }
+    [JsonPropertyName("rewards")] public List<SleeveShopRewardSeed> Rewards { get; set; } = new();
+}
+
+public sealed class SleeveShopRewardSeed
+{
+    [JsonPropertyName("order_index")] public int OrderIndex { get; set; }
+    [JsonPropertyName("reward_type")] public int RewardType { get; set; }
+    [JsonPropertyName("reward_detail_id")] public long RewardDetailId { get; set; }
+    [JsonPropertyName("reward_number")] public int RewardNumber { get; set; }
+}

SVSim.Bootstrap/Models/Seed/SpotCardExchangeSeed.cs

@@ -0,0 +1,12 @@
+using System.Text.Json.Serialization;
+
+namespace SVSim.Bootstrap.Models.Seed;
+
+public sealed class SpotCardExchangeSeed
+{
+    [JsonPropertyName("card_id")] public long CardId { get; set; }
+    [JsonPropertyName("class")] public int ClassId { get; set; }
+    [JsonPropertyName("exchange_point")] public int ExchangePoint { get; set; }
+    [JsonPropertyName("ts_rotation_id")] public long TsRotationId { get; set; }
+    [JsonPropertyName("is_pre_release")] public bool IsPreRelease { get; set; }
+}

SVSim.Bootstrap/Program.cs

@@ -87,6 +87,9 @@ public static class Program
             await new BattlePassImporter().ImportAsync(context, opts.SeedDir);
             await new BattlePassSeasonImporter().ImportAsync(context, opts.SeedDir);
             await new BattlePassRewardImporter().ImportAsync(context, opts.SeedDir);
+            await new MissionCatalogImporter().ImportAsync(context, opts.SeedDir);
+            await new AchievementCatalogImporter().ImportAsync(context, opts.SeedDir);
+            await new BattlePassMonthlyMissionImporter().ImportAsync(context, opts.SeedDir);
             await new DailyLoginBonusImporter().ImportAsync(context, opts.SeedDir);
             await new PreReleaseInfoImporter().ImportAsync(context, opts.SeedDir);
             await new CardListsImporter().ImportAsync(context, opts.SeedDir);
@@ -94,6 +97,11 @@ public static class Program
 
             await new PracticeOpponentImporter().ImportAsync(context, opts.SeedDir);
             await new PaymentItemImporter().ImportAsync(context, opts.SeedDir);
+            await new ItemImporter().ImportAsync(context, opts.SeedDir);
+            await new SleeveShopImporter().ImportAsync(context, opts.SeedDir);
+            await new ItemPurchaseImporter().ImportAsync(context, opts.SeedDir);
+            await new LeaderSkinShopImporter().ImportAsync(context, opts.SeedDir);
+            await new SpotCardExchangeImporter().ImportAsync(context, opts.SeedDir);
             var puzzleImporter = new PuzzleImporter();
             await puzzleImporter.ImportGroupsAsync(context, opts.SeedDir);
             await puzzleImporter.ImportPuzzlesAsync(context, opts.SeedDir);

SVSim.Database/Migrations/20260527140924_AddMissionsAndAchievements.cs

@@ -0,0 +1,223 @@
+using System;
+using Microsoft.EntityFrameworkCore.Migrations;
+using Npgsql.EntityFrameworkCore.PostgreSQL.Metadata;
+
+#nullable disable
+
+namespace SVSim.Database.Migrations
+{
+    /// <inheritdoc />
+    public partial class AddMissionsAndAchievements : Migration
+    {
+        /// <inheritdoc />
+        protected override void Up(MigrationBuilder migrationBuilder)
+        {
+            migrationBuilder.CreateTable(
+                name: "AchievementCatalog",
+                columns: table => new
+                {
+                    AchievementType = table.Column<int>(type: "integer", nullable: false),
+                    Level = table.Column<int>(type: "integer", nullable: false),
+                    Name = table.Column<string>(type: "text", nullable: false),
+                    RequireNumber = table.Column<int>(type: "integer", nullable: false),
+                    RewardType = table.Column<int>(type: "integer", nullable: false),
+                    RewardDetailId = table.Column<long>(type: "bigint", nullable: false),
+                    RewardNumber = table.Column<int>(type: "integer", nullable: false),
+                    OrderNum = table.Column<int>(type: "integer", nullable: false),
+                    EventType = table.Column<string>(type: "text", nullable: true),
+                    EventArg = table.Column<int>(type: "integer", nullable: true)
+                },
+                constraints: table =>
+                {
+                    table.PrimaryKey("PK_AchievementCatalog", x => new { x.AchievementType, x.Level });
+                });
+
+            migrationBuilder.CreateTable(
+                name: "BattlePassMonthlyMissions",
+                columns: table => new
+                {
+                    Id = table.Column<int>(type: "integer", nullable: false)
+                        .Annotation("Npgsql:ValueGenerationStrategy", NpgsqlValueGenerationStrategy.IdentityByDefaultColumn),
+                    Year = table.Column<int>(type: "integer", nullable: false),
+                    Month = table.Column<int>(type: "integer", nullable: false),
+                    OrderNum = table.Column<int>(type: "integer", nullable: false),
+                    Name = table.Column<string>(type: "text", nullable: false),
+                    RequireNumber = table.Column<int>(type: "integer", nullable: false),
+                    BattlePassPoint = table.Column<int>(type: "integer", nullable: false),
+                    RewardType = table.Column<int>(type: "integer", nullable: true),
+                    RewardDetailId = table.Column<long>(type: "bigint", nullable: true),
+                    RewardNumber = table.Column<int>(type: "integer", nullable: true),
+                    EventType = table.Column<string>(type: "text", nullable: true),
+                    EventArg = table.Column<int>(type: "integer", nullable: true),
+                    DateCreated = table.Column<DateTime>(type: "timestamp with time zone", nullable: false),
+                    DateUpdated = table.Column<DateTime>(type: "timestamp with time zone", nullable: true)
+                },
+                constraints: table =>
+                {
+                    table.PrimaryKey("PK_BattlePassMonthlyMissions", x => x.Id);
+                });
+
+            migrationBuilder.CreateTable(
+                name: "MissionCatalog",
+                columns: table => new
+                {
+                    Id = table.Column<int>(type: "integer", nullable: false),
+                    Name = table.Column<string>(type: "text", nullable: false),
+                    LotType = table.Column<int>(type: "integer", nullable: false),
+                    RequireNumber = table.Column<int>(type: "integer", nullable: false),
+                    RewardType = table.Column<int>(type: "integer", nullable: false),
+                    RewardDetailId = table.Column<long>(type: "bigint", nullable: false),
+                    RewardNumber = table.Column<int>(type: "integer", nullable: false),
+                    BattlePassPoint = table.Column<int>(type: "integer", nullable: false),
+                    DefaultFlag = table.Column<bool>(type: "boolean", nullable: false),
+                    EventType = table.Column<string>(type: "text", nullable: true),
+                    EventArg = table.Column<int>(type: "integer", nullable: true),
+                    StartTime = table.Column<long>(type: "bigint", nullable: false),
+                    EndTime = table.Column<long>(type: "bigint", nullable: true),
+                    DateCreated = table.Column<DateTime>(type: "timestamp with time zone", nullable: false),
+                    DateUpdated = table.Column<DateTime>(type: "timestamp with time zone", nullable: true)
+                },
+                constraints: table =>
+                {
+                    table.PrimaryKey("PK_MissionCatalog", x => x.Id);
+                });
+
+            migrationBuilder.CreateTable(
+                name: "ViewerAchievements",
+                columns: table => new
+                {
+                    ViewerId = table.Column<long>(type: "bigint", nullable: false),
+                    AchievementType = table.Column<int>(type: "integer", nullable: false),
+                    Level = table.Column<int>(type: "integer", nullable: false),
+                    AchievementStatus = table.Column<int>(type: "integer", nullable: false),
+                    NowAchievedLevel = table.Column<int>(type: "integer", nullable: false),
+                    ResultAnnounceSawLevel = table.Column<int>(type: "integer", nullable: false)
+                },
+                constraints: table =>
+                {
+                    table.PrimaryKey("PK_ViewerAchievements", x => new { x.ViewerId, x.AchievementType });
+                    table.ForeignKey(
+                        name: "FK_ViewerAchievements_Viewers_ViewerId",
+                        column: x => x.ViewerId,
+                        principalTable: "Viewers",
+                        principalColumn: "Id",
+                        onDelete: ReferentialAction.Cascade);
+                });
+
+            migrationBuilder.CreateTable(
+                name: "ViewerEventCounters",
+                columns: table => new
+                {
+                    ViewerId = table.Column<long>(type: "bigint", nullable: false),
+                    EventKey = table.Column<string>(type: "text", nullable: false),
+                    Period = table.Column<string>(type: "text", nullable: false),
+                    Count = table.Column<int>(type: "integer", nullable: false)
+                },
+                constraints: table =>
+                {
+                    table.PrimaryKey("PK_ViewerEventCounters", x => new { x.ViewerId, x.EventKey, x.Period });
+                    table.ForeignKey(
+                        name: "FK_ViewerEventCounters_Viewers_ViewerId",
+                        column: x => x.ViewerId,
+                        principalTable: "Viewers",
+                        principalColumn: "Id",
+                        onDelete: ReferentialAction.Cascade);
+                });
+
+            migrationBuilder.CreateTable(
+                name: "ViewerMissions",
+                columns: table => new
+                {
+                    Id = table.Column<long>(type: "bigint", nullable: false)
+                        .Annotation("Npgsql:ValueGenerationStrategy", NpgsqlValueGenerationStrategy.IdentityByDefaultColumn),
+                    ViewerId = table.Column<long>(type: "bigint", nullable: false),
+                    MissionCatalogId = table.Column<int>(type: "integer", nullable: false),
+                    Slot = table.Column<int>(type: "integer", nullable: false),
+                    AssignedAt = table.Column<long>(type: "bigint", nullable: false),
+                    ClaimedAt = table.Column<long>(type: "bigint", nullable: true),
+                    MissionStatus = table.Column<int>(type: "integer", nullable: false),
+                    DateCreated = table.Column<DateTime>(type: "timestamp with time zone", nullable: false),
+                    DateUpdated = table.Column<DateTime>(type: "timestamp with time zone", nullable: true)
+                },
+                constraints: table =>
+                {
+                    table.PrimaryKey("PK_ViewerMissions", x => x.Id);
+                    table.ForeignKey(
+                        name: "FK_ViewerMissions_Viewers_ViewerId",
+                        column: x => x.ViewerId,
+                        principalTable: "Viewers",
+                        principalColumn: "Id",
+                        onDelete: ReferentialAction.Cascade);
+                });
+
+            migrationBuilder.CreateIndex(
+                name: "IX_AchievementCatalog_AchievementType",
+                table: "AchievementCatalog",
+                column: "AchievementType");
+
+            migrationBuilder.CreateIndex(
+                name: "IX_AchievementCatalog_EventType_EventArg",
+                table: "AchievementCatalog",
+                columns: new[] { "EventType", "EventArg" });
+
+            migrationBuilder.CreateIndex(
+                name: "IX_BattlePassMonthlyMissions_Year_Month",
+                table: "BattlePassMonthlyMissions",
+                columns: new[] { "Year", "Month" });
+
+            migrationBuilder.CreateIndex(
+                name: "IX_BattlePassMonthlyMissions_Year_Month_OrderNum",
+                table: "BattlePassMonthlyMissions",
+                columns: new[] { "Year", "Month", "OrderNum" },
+                unique: true);
+
+            migrationBuilder.CreateIndex(
+                name: "IX_MissionCatalog_EventType_EventArg",
+                table: "MissionCatalog",
+                columns: new[] { "EventType", "EventArg" });
+
+            migrationBuilder.CreateIndex(
+                name: "IX_MissionCatalog_LotType",
+                table: "MissionCatalog",
+                column: "LotType");
+
+            migrationBuilder.CreateIndex(
+                name: "IX_ViewerEventCounters_ViewerId_Period",
+                table: "ViewerEventCounters",
+                columns: new[] { "ViewerId", "Period" });
+
+            migrationBuilder.CreateIndex(
+                name: "IX_ViewerMissions_ViewerId",
+                table: "ViewerMissions",
+                column: "ViewerId");
+
+            migrationBuilder.CreateIndex(
+                name: "IX_ViewerMissions_ViewerId_Slot",
+                table: "ViewerMissions",
+                columns: new[] { "ViewerId", "Slot" },
+                unique: true);
+        }
+
+        /// <inheritdoc />
+        protected override void Down(MigrationBuilder migrationBuilder)
+        {
+            migrationBuilder.DropTable(
+                name: "AchievementCatalog");
+
+            migrationBuilder.DropTable(
+                name: "BattlePassMonthlyMissions");
+
+            migrationBuilder.DropTable(
+                name: "MissionCatalog");
+
+            migrationBuilder.DropTable(
+                name: "ViewerAchievements");
+
+            migrationBuilder.DropTable(
+                name: "ViewerEventCounters");
+
+            migrationBuilder.DropTable(
+                name: "ViewerMissions");
+        }
+    }
+}

SVSim.Database/Migrations/20260527175337_AddViewerUdid.cs

@@ -0,0 +1,40 @@
+using System;
+using Microsoft.EntityFrameworkCore.Migrations;
+
+#nullable disable
+
+namespace SVSim.Database.Migrations
+{
+    /// <inheritdoc />
+    public partial class AddViewerUdid : Migration
+    {
+        /// <inheritdoc />
+        protected override void Up(MigrationBuilder migrationBuilder)
+        {
+            migrationBuilder.AddColumn<Guid>(
+                name: "Udid",
+                table: "Viewers",
+                type: "uuid",
+                nullable: true);
+
+            migrationBuilder.CreateIndex(
+                name: "IX_Viewers_Udid",
+                table: "Viewers",
+                column: "Udid",
+                unique: true,
+                filter: "\"Udid\" IS NOT NULL");
+        }
+
+        /// <inheritdoc />
+        protected override void Down(MigrationBuilder migrationBuilder)
+        {
+            migrationBuilder.DropIndex(
+                name: "IX_Viewers_Udid",
+                table: "Viewers");
+
+            migrationBuilder.DropColumn(
+                name: "Udid",
+                table: "Viewers");
+        }
+    }
+}

SVSim.Database/Migrations/20260527184324_AddSocialAccountConnectionUniqueIndex.cs

@@ -0,0 +1,28 @@
+using Microsoft.EntityFrameworkCore.Migrations;
+
+#nullable disable
+
+namespace SVSim.Database.Migrations
+{
+    /// <inheritdoc />
+    public partial class AddSocialAccountConnectionUniqueIndex : Migration
+    {
+        /// <inheritdoc />
+        protected override void Up(MigrationBuilder migrationBuilder)
+        {
+            migrationBuilder.CreateIndex(
+                name: "IX_SocialAccountConnection_AccountType_AccountId",
+                table: "SocialAccountConnection",
+                columns: new[] { "AccountType", "AccountId" },
+                unique: true);
+        }
+
+        /// <inheritdoc />
+        protected override void Down(MigrationBuilder migrationBuilder)
+        {
+            migrationBuilder.DropIndex(
+                name: "IX_SocialAccountConnection_AccountType_AccountId",
+                table: "SocialAccountConnection");
+        }
+    }
+}

SVSim.Database/Migrations/20260528013825_AddItemTypeAndThumbnail.cs

@@ -0,0 +1,40 @@
+using Microsoft.EntityFrameworkCore.Migrations;
+
+#nullable disable
+
+namespace SVSim.Database.Migrations
+{
+    /// <inheritdoc />
+    public partial class AddItemTypeAndThumbnail : Migration
+    {
+        /// <inheritdoc />
+        protected override void Up(MigrationBuilder migrationBuilder)
+        {
+            migrationBuilder.AddColumn<string>(
+                name: "ThumbnailPath",
+                table: "Items",
+                type: "text",
+                nullable: false,
+                defaultValue: "");
+
+            migrationBuilder.AddColumn<int>(
+                name: "Type",
+                table: "Items",
+                type: "integer",
+                nullable: false,
+                defaultValue: 0);
+        }
+
+        /// <inheritdoc />
+        protected override void Down(MigrationBuilder migrationBuilder)
+        {
+            migrationBuilder.DropColumn(
+                name: "ThumbnailPath",
+                table: "Items");
+
+            migrationBuilder.DropColumn(
+                name: "Type",
+                table: "Items");
+        }
+    }
+}

SVSim.Database/Migrations/20260528015716_AddSleeveShop.cs

@@ -0,0 +1,96 @@
+using System;
+using Microsoft.EntityFrameworkCore.Migrations;
+using Npgsql.EntityFrameworkCore.PostgreSQL.Metadata;
+
+#nullable disable
+
+namespace SVSim.Database.Migrations
+{
+    /// <inheritdoc />
+    public partial class AddSleeveShop : Migration
+    {
+        /// <inheritdoc />
+        protected override void Up(MigrationBuilder migrationBuilder)
+        {
+            migrationBuilder.CreateTable(
+                name: "SleeveShopSeries",
+                columns: table => new
+                {
+                    Id = table.Column<int>(type: "integer", nullable: false),
+                    IsNew = table.Column<bool>(type: "boolean", nullable: false),
+                    IsEnabled = table.Column<bool>(type: "boolean", nullable: false),
+                    DateCreated = table.Column<DateTime>(type: "timestamp with time zone", nullable: false),
+                    DateUpdated = table.Column<DateTime>(type: "timestamp with time zone", nullable: true)
+                },
+                constraints: table =>
+                {
+                    table.PrimaryKey("PK_SleeveShopSeries", x => x.Id);
+                });
+
+            migrationBuilder.CreateTable(
+                name: "SleeveShopProducts",
+                columns: table => new
+                {
+                    Id = table.Column<int>(type: "integer", nullable: false),
+                    SeriesId = table.Column<int>(type: "integer", nullable: false),
+                    NameKey = table.Column<string>(type: "text", nullable: false),
+                    PriceCrystal = table.Column<int>(type: "integer", nullable: true),
+                    PriceRupy = table.Column<int>(type: "integer", nullable: true),
+                    IsEnabled = table.Column<bool>(type: "boolean", nullable: false),
+                    DateCreated = table.Column<DateTime>(type: "timestamp with time zone", nullable: false),
+                    DateUpdated = table.Column<DateTime>(type: "timestamp with time zone", nullable: true)
+                },
+                constraints: table =>
+                {
+                    table.PrimaryKey("PK_SleeveShopProducts", x => x.Id);
+                    table.ForeignKey(
+                        name: "FK_SleeveShopProducts_SleeveShopSeries_SeriesId",
+                        column: x => x.SeriesId,
+                        principalTable: "SleeveShopSeries",
+                        principalColumn: "Id",
+                        onDelete: ReferentialAction.Cascade);
+                });
+
+            migrationBuilder.CreateTable(
+                name: "SleeveShopProductRewardEntry",
+                columns: table => new
+                {
+                    SleeveShopProductEntryId = table.Column<int>(type: "integer", nullable: false),
+                    Id = table.Column<int>(type: "integer", nullable: false)
+                        .Annotation("Npgsql:ValueGenerationStrategy", NpgsqlValueGenerationStrategy.IdentityByDefaultColumn),
+                    OrderIndex = table.Column<int>(type: "integer", nullable: false),
+                    RewardType = table.Column<int>(type: "integer", nullable: false),
+                    RewardDetailId = table.Column<long>(type: "bigint", nullable: false),
+                    RewardNumber = table.Column<int>(type: "integer", nullable: false)
+                },
+                constraints: table =>
+                {
+                    table.PrimaryKey("PK_SleeveShopProductRewardEntry", x => new { x.SleeveShopProductEntryId, x.Id });
+                    table.ForeignKey(
+                        name: "FK_SleeveShopProductRewardEntry_SleeveShopProducts_SleeveShopP~",
+                        column: x => x.SleeveShopProductEntryId,
+                        principalTable: "SleeveShopProducts",
+                        principalColumn: "Id",
+                        onDelete: ReferentialAction.Cascade);
+                });
+
+            migrationBuilder.CreateIndex(
+                name: "IX_SleeveShopProducts_SeriesId",
+                table: "SleeveShopProducts",
+                column: "SeriesId");
+        }
+
+        /// <inheritdoc />
+        protected override void Down(MigrationBuilder migrationBuilder)
+        {
+            migrationBuilder.DropTable(
+                name: "SleeveShopProductRewardEntry");
+
+            migrationBuilder.DropTable(
+                name: "SleeveShopProducts");
+
+            migrationBuilder.DropTable(
+                name: "SleeveShopSeries");
+        }
+    }
+}

SVSim.Database/Migrations/20260528021818_AddItemPurchaseCatalog.cs

@@ -0,0 +1,45 @@
+using System;
+using Microsoft.EntityFrameworkCore.Migrations;
+
+#nullable disable
+
+namespace SVSim.Database.Migrations
+{
+    /// <inheritdoc />
+    public partial class AddItemPurchaseCatalog : Migration
+    {
+        /// <inheritdoc />
+        protected override void Up(MigrationBuilder migrationBuilder)
+        {
+            migrationBuilder.CreateTable(
+                name: "ItemPurchaseCatalog",
+                columns: table => new
+                {
+                    Id = table.Column<int>(type: "integer", nullable: false),
+                    RequireItemType = table.Column<int>(type: "integer", nullable: false),
+                    RequireItemId = table.Column<long>(type: "bigint", nullable: false),
+                    RequireItemNum = table.Column<int>(type: "integer", nullable: false),
+                    PurchaseItemType = table.Column<int>(type: "integer", nullable: false),
+                    PurchaseItemId = table.Column<long>(type: "bigint", nullable: false),
+                    PurchaseItemNum = table.Column<int>(type: "integer", nullable: false),
+                    PurchaseName = table.Column<string>(type: "text", nullable: false),
+                    IsMonthlyReset = table.Column<bool>(type: "boolean", nullable: false),
+                    PurchaseLimit = table.Column<int>(type: "integer", nullable: false),
+                    IsEnabled = table.Column<bool>(type: "boolean", nullable: false),
+                    DateCreated = table.Column<DateTime>(type: "timestamp with time zone", nullable: false),
+                    DateUpdated = table.Column<DateTime>(type: "timestamp with time zone", nullable: true)
+                },
+                constraints: table =>
+                {
+                    table.PrimaryKey("PK_ItemPurchaseCatalog", x => x.Id);
+                });
+        }
+
+        /// <inheritdoc />
+        protected override void Down(MigrationBuilder migrationBuilder)
+        {
+            migrationBuilder.DropTable(
+                name: "ItemPurchaseCatalog");
+        }
+    }
+}

SVSim.Database/Migrations/20260528024430_AddLeaderSkinShop.cs

@@ -0,0 +1,155 @@
+using System;
+using Microsoft.EntityFrameworkCore.Migrations;
+using Npgsql.EntityFrameworkCore.PostgreSQL.Metadata;
+
+#nullable disable
+
+namespace SVSim.Database.Migrations
+{
+    /// <inheritdoc />
+    public partial class AddLeaderSkinShop : Migration
+    {
+        /// <inheritdoc />
+        protected override void Up(MigrationBuilder migrationBuilder)
+        {
+            migrationBuilder.CreateTable(
+                name: "LeaderSkinShopSeries",
+                columns: table => new
+                {
+                    Id = table.Column<int>(type: "integer", nullable: false),
+                    IsNew = table.Column<bool>(type: "boolean", nullable: false),
+                    IsEnabled = table.Column<bool>(type: "boolean", nullable: false),
+                    SetSalesStatus = table.Column<int>(type: "integer", nullable: false),
+                    SetPriceCrystal = table.Column<int>(type: "integer", nullable: true),
+                    SetPriceRupy = table.Column<int>(type: "integer", nullable: true),
+                    SetPriceTicket = table.Column<int>(type: "integer", nullable: true),
+                    SetPriceTicketId = table.Column<long>(type: "bigint", nullable: true),
+                    SetCompletionRewardStatus = table.Column<int>(type: "integer", nullable: false),
+                    DateCreated = table.Column<DateTime>(type: "timestamp with time zone", nullable: false),
+                    DateUpdated = table.Column<DateTime>(type: "timestamp with time zone", nullable: true)
+                },
+                constraints: table =>
+                {
+                    table.PrimaryKey("PK_LeaderSkinShopSeries", x => x.Id);
+                });
+
+            migrationBuilder.CreateTable(
+                name: "ViewerLeaderSkinSetClaims",
+                columns: table => new
+                {
+                    ViewerId = table.Column<long>(type: "bigint", nullable: false),
+                    SeriesId = table.Column<int>(type: "integer", nullable: false),
+                    ClaimedAt = table.Column<DateTime>(type: "timestamp with time zone", nullable: false)
+                },
+                constraints: table =>
+                {
+                    table.PrimaryKey("PK_ViewerLeaderSkinSetClaims", x => new { x.ViewerId, x.SeriesId });
+                });
+
+            migrationBuilder.CreateTable(
+                name: "LeaderSkinShopProducts",
+                columns: table => new
+                {
+                    Id = table.Column<int>(type: "integer", nullable: false),
+                    SeriesId = table.Column<int>(type: "integer", nullable: false),
+                    LeaderSkinId = table.Column<int>(type: "integer", nullable: false),
+                    ProductNameKey = table.Column<string>(type: "text", nullable: false),
+                    IntroductionKey = table.Column<string>(type: "text", nullable: false),
+                    CvNameKey = table.Column<string>(type: "text", nullable: false),
+                    SinglePriceCrystal = table.Column<int>(type: "integer", nullable: true),
+                    SinglePriceRupy = table.Column<int>(type: "integer", nullable: true),
+                    SinglePriceTicket = table.Column<int>(type: "integer", nullable: true),
+                    TicketNumber = table.Column<int>(type: "integer", nullable: true),
+                    TicketItemId = table.Column<long>(type: "bigint", nullable: true),
+                    IsEnabled = table.Column<bool>(type: "boolean", nullable: false),
+                    DateCreated = table.Column<DateTime>(type: "timestamp with time zone", nullable: false),
+                    DateUpdated = table.Column<DateTime>(type: "timestamp with time zone", nullable: true)
+                },
+                constraints: table =>
+                {
+                    table.PrimaryKey("PK_LeaderSkinShopProducts", x => x.Id);
+                    table.ForeignKey(
+                        name: "FK_LeaderSkinShopProducts_LeaderSkinShopSeries_SeriesId",
+                        column: x => x.SeriesId,
+                        principalTable: "LeaderSkinShopSeries",
+                        principalColumn: "Id",
+                        onDelete: ReferentialAction.Cascade);
+                });
+
+            migrationBuilder.CreateTable(
+                name: "LeaderSkinShopSeriesRewardEntry",
+                columns: table => new
+                {
+                    LeaderSkinShopSeriesEntryId = table.Column<int>(type: "integer", nullable: false),
+                    Id = table.Column<int>(type: "integer", nullable: false)
+                        .Annotation("Npgsql:ValueGenerationStrategy", NpgsqlValueGenerationStrategy.IdentityByDefaultColumn),
+                    OrderIndex = table.Column<int>(type: "integer", nullable: false),
+                    RewardType = table.Column<int>(type: "integer", nullable: false),
+                    RewardDetailId = table.Column<long>(type: "bigint", nullable: false),
+                    RewardNumber = table.Column<int>(type: "integer", nullable: false)
+                },
+                constraints: table =>
+                {
+                    table.PrimaryKey("PK_LeaderSkinShopSeriesRewardEntry", x => new { x.LeaderSkinShopSeriesEntryId, x.Id });
+                    table.ForeignKey(
+                        name: "FK_LeaderSkinShopSeriesRewardEntry_LeaderSkinShopSeries_Leader~",
+                        column: x => x.LeaderSkinShopSeriesEntryId,
+                        principalTable: "LeaderSkinShopSeries",
+                        principalColumn: "Id",
+                        onDelete: ReferentialAction.Cascade);
+                });
+
+            migrationBuilder.CreateTable(
+                name: "LeaderSkinShopProductRewardEntry",
+                columns: table => new
+                {
+                    LeaderSkinShopProductEntryId = table.Column<int>(type: "integer", nullable: false),
+                    Id = table.Column<int>(type: "integer", nullable: false)
+                        .Annotation("Npgsql:ValueGenerationStrategy", NpgsqlValueGenerationStrategy.IdentityByDefaultColumn),
+                    OrderIndex = table.Column<int>(type: "integer", nullable: false),
+                    RewardType = table.Column<int>(type: "integer", nullable: false),
+                    RewardDetailId = table.Column<long>(type: "bigint", nullable: false),
+                    RewardNumber = table.Column<int>(type: "integer", nullable: false)
+                },
+                constraints: table =>
+                {
+                    table.PrimaryKey("PK_LeaderSkinShopProductRewardEntry", x => new { x.LeaderSkinShopProductEntryId, x.Id });
+                    table.ForeignKey(
+                        name: "FK_LeaderSkinShopProductRewardEntry_LeaderSkinShopProducts_Lea~",
+                        column: x => x.LeaderSkinShopProductEntryId,
+                        principalTable: "LeaderSkinShopProducts",
+                        principalColumn: "Id",
+                        onDelete: ReferentialAction.Cascade);
+                });
+
+            migrationBuilder.CreateIndex(
+                name: "IX_LeaderSkinShopProducts_SeriesId",
+                table: "LeaderSkinShopProducts",
+                column: "SeriesId");
+
+            migrationBuilder.CreateIndex(
+                name: "IX_ViewerLeaderSkinSetClaims_ViewerId",
+                table: "ViewerLeaderSkinSetClaims",
+                column: "ViewerId");
+        }
+
+        /// <inheritdoc />
+        protected override void Down(MigrationBuilder migrationBuilder)
+        {
+            migrationBuilder.DropTable(
+                name: "LeaderSkinShopProductRewardEntry");
+
+            migrationBuilder.DropTable(
+                name: "LeaderSkinShopSeriesRewardEntry");
+
+            migrationBuilder.DropTable(
+                name: "ViewerLeaderSkinSetClaims");
+
+            migrationBuilder.DropTable(
+                name: "LeaderSkinShopProducts");
+
+            migrationBuilder.DropTable(
+                name: "LeaderSkinShopSeries");
+        }
+    }
+}

SVSim.Database/Migrations/20260528030221_AddSpotCardExchange.cs

@@ -0,0 +1,74 @@
+using System;
+using Microsoft.EntityFrameworkCore.Migrations;
+
+#nullable disable
+
+namespace SVSim.Database.Migrations
+{
+    /// <inheritdoc />
+    public partial class AddSpotCardExchange : Migration
+    {
+        /// <inheritdoc />
+        protected override void Up(MigrationBuilder migrationBuilder)
+        {
+            migrationBuilder.AddColumn<decimal>(
+                name: "Currency_SpotPoints",
+                table: "Viewers",
+                type: "numeric(20,0)",
+                nullable: false,
+                defaultValue: 0m);
+
+            migrationBuilder.CreateTable(
+                name: "SpotCardExchangeCatalog",
+                columns: table => new
+                {
+                    Id = table.Column<long>(type: "bigint", nullable: false),
+                    CardId = table.Column<long>(type: "bigint", nullable: false),
+                    ClassId = table.Column<int>(type: "integer", nullable: false),
+                    ExchangePoint = table.Column<int>(type: "integer", nullable: false),
+                    TsRotationId = table.Column<long>(type: "bigint", nullable: false),
+                    IsPreRelease = table.Column<bool>(type: "boolean", nullable: false),
+                    IsEnabled = table.Column<bool>(type: "boolean", nullable: false),
+                    DateCreated = table.Column<DateTime>(type: "timestamp with time zone", nullable: false),
+                    DateUpdated = table.Column<DateTime>(type: "timestamp with time zone", nullable: true)
+                },
+                constraints: table =>
+                {
+                    table.PrimaryKey("PK_SpotCardExchangeCatalog", x => x.Id);
+                });
+
+            migrationBuilder.CreateTable(
+                name: "ViewerSpotCardExchanges",
+                columns: table => new
+                {
+                    ViewerId = table.Column<long>(type: "bigint", nullable: false),
+                    CardId = table.Column<long>(type: "bigint", nullable: false),
+                    IsPreRelease = table.Column<bool>(type: "boolean", nullable: false),
+                    ExchangedAt = table.Column<DateTime>(type: "timestamp with time zone", nullable: false)
+                },
+                constraints: table =>
+                {
+                    table.PrimaryKey("PK_ViewerSpotCardExchanges", x => new { x.ViewerId, x.CardId });
+                });
+
+            migrationBuilder.CreateIndex(
+                name: "IX_ViewerSpotCardExchanges_ViewerId",
+                table: "ViewerSpotCardExchanges",
+                column: "ViewerId");
+        }
+
+        /// <inheritdoc />
+        protected override void Down(MigrationBuilder migrationBuilder)
+        {
+            migrationBuilder.DropTable(
+                name: "SpotCardExchangeCatalog");
+
+            migrationBuilder.DropTable(
+                name: "ViewerSpotCardExchanges");
+
+            migrationBuilder.DropColumn(
+                name: "Currency_SpotPoints",
+                table: "Viewers");
+        }
+    }
+}

SVSim.Database/Migrations/SVSimDbContextModelSnapshot.cs

@@ -370,6 +370,48 @@ namespace SVSim.Database.Migrations
                     b.ToTable("ViewerStoryProgress");
                 });
 
+            modelBuilder.Entity("SVSim.Database.Models.AchievementCatalogEntry", b =>
+                {
+                    b.Property<int>("AchievementType")
+                        .HasColumnType("integer");
+
+                    b.Property<int>("Level")
+                        .HasColumnType("integer");
+
+                    b.Property<int?>("EventArg")
+                        .HasColumnType("integer");
+
+                    b.Property<string>("EventType")
+                        .HasColumnType("text");
+
+                    b.Property<string>("Name")
+                        .IsRequired()
+                        .HasColumnType("text");
+
+                    b.Property<int>("OrderNum")
+                        .HasColumnType("integer");
+
+                    b.Property<int>("RequireNumber")
+                        .HasColumnType("integer");
+
+                    b.Property<long>("RewardDetailId")
+                        .HasColumnType("bigint");
+
+                    b.Property<int>("RewardNumber")
+                        .HasColumnType("integer");
+
+                    b.Property<int>("RewardType")
+                        .HasColumnType("integer");
+
+                    b.HasKey("AchievementType", "Level");
+
+                    b.HasIndex("AchievementType");
+
+                    b.HasIndex("EventType", "EventArg");
+
+                    b.ToTable("AchievementCatalog");
+                });
+
             modelBuilder.Entity("SVSim.Database.Models.ArenaSeasonConfig", b =>
                 {
                     b.Property<int>("Id")
@@ -516,6 +558,64 @@ namespace SVSim.Database.Migrations
                     b.ToTable("BattlePassLevels");
                 });
 
+            modelBuilder.Entity("SVSim.Database.Models.BattlePassMonthlyMissionEntry", b =>
+                {
+                    b.Property<int>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("integer");
+
+                    NpgsqlPropertyBuilderExtensions.UseIdentityByDefaultColumn(b.Property<int>("Id"));
+
+                    b.Property<int>("BattlePassPoint")
+                        .HasColumnType("integer");
+
+                    b.Property<DateTime>("DateCreated")
+                        .HasColumnType("timestamp with time zone");
+
+                    b.Property<DateTime?>("DateUpdated")
+                        .HasColumnType("timestamp with time zone");
+
+                    b.Property<int?>("EventArg")
+                        .HasColumnType("integer");
+
+                    b.Property<string>("EventType")
+                        .HasColumnType("text");
+
+                    b.Property<int>("Month")
+                        .HasColumnType("integer");
+
+                    b.Property<string>("Name")
+                        .IsRequired()
+                        .HasColumnType("text");
+
+                    b.Property<int>("OrderNum")
+                        .HasColumnType("integer");
+
+                    b.Property<int>("RequireNumber")
+                        .HasColumnType("integer");
+
+                    b.Property<long?>("RewardDetailId")
+                        .HasColumnType("bigint");
+
+                    b.Property<int?>("RewardNumber")
+                        .HasColumnType("integer");
+
+                    b.Property<int?>("RewardType")
+                        .HasColumnType("integer");
+
+                    b.Property<int>("Year")
+                        .HasColumnType("integer");
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("Year", "Month");
+
+                    b.HasIndex("Year", "Month", "OrderNum")
+                        .IsUnique();
+
+                    b.ToTable("BattlePassMonthlyMissions");
+                });
+
             modelBuilder.Entity("SVSim.Database.Models.BattlePassRewardEntry", b =>
                 {
                     b.Property<long>("Id")
@@ -995,11 +1095,65 @@ namespace SVSim.Database.Migrations
                         .IsRequired()
                         .HasColumnType("text");
 
+                    b.Property<string>("ThumbnailPath")
+                        .IsRequired()
+                        .HasColumnType("text");
+
+                    b.Property<int>("Type")
+                        .HasColumnType("integer");
+
                     b.HasKey("Id");
 
                     b.ToTable("Items");
                 });
 
+            modelBuilder.Entity("SVSim.Database.Models.ItemPurchaseCatalogEntry", b =>
+                {
+                    b.Property<int>("Id")
+                        .HasColumnType("integer");
+
+                    b.Property<DateTime>("DateCreated")
+                        .HasColumnType("timestamp with time zone");
+
+                    b.Property<DateTime?>("DateUpdated")
+                        .HasColumnType("timestamp with time zone");
+
+                    b.Property<bool>("IsEnabled")
+                        .HasColumnType("boolean");
+
+                    b.Property<bool>("IsMonthlyReset")
+                        .HasColumnType("boolean");
+
+                    b.Property<long>("PurchaseItemId")
+                        .HasColumnType("bigint");
+
+                    b.Property<int>("PurchaseItemNum")
+                        .HasColumnType("integer");
+
+                    b.Property<int>("PurchaseItemType")
+                        .HasColumnType("integer");
+
+                    b.Property<int>("PurchaseLimit")
+                        .HasColumnType("integer");
+
+                    b.Property<string>("PurchaseName")
+                        .IsRequired()
+                        .HasColumnType("text");
+
+                    b.Property<long>("RequireItemId")
+                        .HasColumnType("bigint");
+
+                    b.Property<int>("RequireItemNum")
+                        .HasColumnType("integer");
+
+                    b.Property<int>("RequireItemType")
+                        .HasColumnType("integer");
+
+                    b.HasKey("Id");
+
+                    b.ToTable("ItemPurchaseCatalog");
+                });
+
             modelBuilder.Entity("SVSim.Database.Models.LeaderSkinEntry", b =>
                 {
                     b.Property<int>("Id")
@@ -1028,6 +1182,100 @@ namespace SVSim.Database.Migrations
                     b.ToTable("LeaderSkins");
                 });
 
+            modelBuilder.Entity("SVSim.Database.Models.LeaderSkinShopProductEntry", b =>
+                {
+                    b.Property<int>("Id")
+                        .HasColumnType("integer");
+
+                    b.Property<string>("CvNameKey")
+                        .IsRequired()
+                        .HasColumnType("text");
+
+                    b.Property<DateTime>("DateCreated")
+                        .HasColumnType("timestamp with time zone");
+
+                    b.Property<DateTime?>("DateUpdated")
+                        .HasColumnType("timestamp with time zone");
+
+                    b.Property<string>("IntroductionKey")
+                        .IsRequired()
+                        .HasColumnType("text");
+
+                    b.Property<bool>("IsEnabled")
+                        .HasColumnType("boolean");
+
+                    b.Property<int>("LeaderSkinId")
+                        .HasColumnType("integer");
+
+                    b.Property<string>("ProductNameKey")
+                        .IsRequired()
+                        .HasColumnType("text");
+
+                    b.Property<int>("SeriesId")
+                        .HasColumnType("integer");
+
+                    b.Property<int?>("SinglePriceCrystal")
+                        .HasColumnType("integer");
+
+                    b.Property<int?>("SinglePriceRupy")
+                        .HasColumnType("integer");
+
+                    b.Property<int?>("SinglePriceTicket")
+                        .HasColumnType("integer");
+
+                    b.Property<long?>("TicketItemId")
+                        .HasColumnType("bigint");
+
+                    b.Property<int?>("TicketNumber")
+                        .HasColumnType("integer");
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("SeriesId");
+
+                    b.ToTable("LeaderSkinShopProducts");
+                });
+
+            modelBuilder.Entity("SVSim.Database.Models.LeaderSkinShopSeriesEntry", b =>
+                {
+                    b.Property<int>("Id")
+                        .HasColumnType("integer");
+
+                    b.Property<DateTime>("DateCreated")
+                        .HasColumnType("timestamp with time zone");
+
+                    b.Property<DateTime?>("DateUpdated")
+                        .HasColumnType("timestamp with time zone");
+
+                    b.Property<bool>("IsEnabled")
+                        .HasColumnType("boolean");
+
+                    b.Property<bool>("IsNew")
+                        .HasColumnType("boolean");
+
+                    b.Property<int>("SetCompletionRewardStatus")
+                        .HasColumnType("integer");
+
+                    b.Property<int?>("SetPriceCrystal")
+                        .HasColumnType("integer");
+
+                    b.Property<int?>("SetPriceRupy")
+                        .HasColumnType("integer");
+
+                    b.Property<int?>("SetPriceTicket")
+                        .HasColumnType("integer");
+
+                    b.Property<long?>("SetPriceTicketId")
+                        .HasColumnType("bigint");
+
+                    b.Property<int>("SetSalesStatus")
+                        .HasColumnType("integer");
+
+                    b.HasKey("Id");
+
+                    b.ToTable("LeaderSkinShopSeries");
+                });
+
             modelBuilder.Entity("SVSim.Database.Models.LoadingExclusionCardEntry", b =>
                 {
                     b.Property<long>("Id")
@@ -1094,6 +1342,63 @@ namespace SVSim.Database.Migrations
                     b.ToTable("MasterPointRankingPeriods");
                 });
 
+            modelBuilder.Entity("SVSim.Database.Models.MissionCatalogEntry", b =>
+                {
+                    b.Property<int>("Id")
+                        .HasColumnType("integer");
+
+                    b.Property<int>("BattlePassPoint")
+                        .HasColumnType("integer");
+
+                    b.Property<DateTime>("DateCreated")
+                        .HasColumnType("timestamp with time zone");
+
+                    b.Property<DateTime?>("DateUpdated")
+                        .HasColumnType("timestamp with time zone");
+
+                    b.Property<bool>("DefaultFlag")
+                        .HasColumnType("boolean");
+
+                    b.Property<long?>("EndTime")
+                        .HasColumnType("bigint");
+
+                    b.Property<int?>("EventArg")
+                        .HasColumnType("integer");
+
+                    b.Property<string>("EventType")
+                        .HasColumnType("text");
+
+                    b.Property<int>("LotType")
+                        .HasColumnType("integer");
+
+                    b.Property<string>("Name")
+                        .IsRequired()
+                        .HasColumnType("text");
+
+                    b.Property<int>("RequireNumber")
+                        .HasColumnType("integer");
+
+                    b.Property<long>("RewardDetailId")
+                        .HasColumnType("bigint");
+
+                    b.Property<int>("RewardNumber")
+                        .HasColumnType("integer");
+
+                    b.Property<int>("RewardType")
+                        .HasColumnType("integer");
+
+                    b.Property<long>("StartTime")
+                        .HasColumnType("bigint");
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("LotType");
+
+                    b.HasIndex("EventType", "EventArg");
+
+                    b.ToTable("MissionCatalog");
+                });
+
             modelBuilder.Entity("SVSim.Database.Models.MyPageBackgroundEntry", b =>
                 {
                     b.Property<int>("Id")
@@ -1800,6 +2105,62 @@ namespace SVSim.Database.Migrations
                     b.ToTable("Sleeves");
                 });
 
+            modelBuilder.Entity("SVSim.Database.Models.SleeveShopProductEntry", b =>
+                {
+                    b.Property<int>("Id")
+                        .HasColumnType("integer");
+
+                    b.Property<DateTime>("DateCreated")
+                        .HasColumnType("timestamp with time zone");
+
+                    b.Property<DateTime?>("DateUpdated")
+                        .HasColumnType("timestamp with time zone");
+
+                    b.Property<bool>("IsEnabled")
+                        .HasColumnType("boolean");
+
+                    b.Property<string>("NameKey")
+                        .IsRequired()
+                        .HasColumnType("text");
+
+                    b.Property<int?>("PriceCrystal")
+                        .HasColumnType("integer");
+
+                    b.Property<int?>("PriceRupy")
+                        .HasColumnType("integer");
+
+                    b.Property<int>("SeriesId")
+                        .HasColumnType("integer");
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("SeriesId");
+
+                    b.ToTable("SleeveShopProducts");
+                });
+
+            modelBuilder.Entity("SVSim.Database.Models.SleeveShopSeriesEntry", b =>
+                {
+                    b.Property<int>("Id")
+                        .HasColumnType("integer");
+
+                    b.Property<DateTime>("DateCreated")
+                        .HasColumnType("timestamp with time zone");
+
+                    b.Property<DateTime?>("DateUpdated")
+                        .HasColumnType("timestamp with time zone");
+
+                    b.Property<bool>("IsEnabled")
+                        .HasColumnType("boolean");
+
+                    b.Property<bool>("IsNew")
+                        .HasColumnType("boolean");
+
+                    b.HasKey("Id");
+
+                    b.ToTable("SleeveShopSeries");
+                });
+
             modelBuilder.Entity("SVSim.Database.Models.SpecialDeckFormatEntry", b =>
                 {
                     b.Property<int>("Id")
@@ -1845,6 +2206,40 @@ namespace SVSim.Database.Migrations
                     b.ToTable("SpotCards");
                 });
 
+            modelBuilder.Entity("SVSim.Database.Models.SpotCardExchangeEntry", b =>
+                {
+                    b.Property<long>("Id")
+                        .HasColumnType("bigint");
+
+                    b.Property<long>("CardId")
+                        .HasColumnType("bigint");
+
+                    b.Property<int>("ClassId")
+                        .HasColumnType("integer");
+
+                    b.Property<DateTime>("DateCreated")
+                        .HasColumnType("timestamp with time zone");
+
+                    b.Property<DateTime?>("DateUpdated")
+                        .HasColumnType("timestamp with time zone");
+
+                    b.Property<int>("ExchangePoint")
+                        .HasColumnType("integer");
+
+                    b.Property<bool>("IsEnabled")
+                        .HasColumnType("boolean");
+
+                    b.Property<bool>("IsPreRelease")
+                        .HasColumnType("boolean");
+
+                    b.Property<long>("TsRotationId")
+                        .HasColumnType("bigint");
+
+                    b.HasKey("Id");
+
+                    b.ToTable("SpotCardExchangeCatalog");
+                });
+
             modelBuilder.Entity("SVSim.Database.Models.UnlimitedRestrictionEntry", b =>
                 {
                     b.Property<long>("Id")
@@ -1895,13 +2290,44 @@ namespace SVSim.Database.Migrations
 
                     NpgsqlPropertyBuilderExtensions.UseSequence(b.Property<long>("ShortUdid"), "ShortUdidSequence");
 
+                    b.Property<Guid?>("Udid")
+                        .HasColumnType("uuid");
+
                     b.HasKey("Id");
 
                     b.HasIndex("ShortUdid");
 
+                    b.HasIndex("Udid")
+                        .IsUnique();
+
                     b.ToTable("Viewers");
                 });
 
+            modelBuilder.Entity("SVSim.Database.Models.ViewerAchievement", b =>
+                {
+                    b.Property<long>("ViewerId")
+                        .HasColumnType("bigint");
+
+                    b.Property<int>("AchievementType")
+                        .HasColumnType("integer");
+
+                    b.Property<int>("AchievementStatus")
+                        .HasColumnType("integer");
+
+                    b.Property<int>("Level")
+                        .HasColumnType("integer");
+
+                    b.Property<int>("NowAchievedLevel")
+                        .HasColumnType("integer");
+
+                    b.Property<int>("ResultAnnounceSawLevel")
+                        .HasColumnType("integer");
+
+                    b.HasKey("ViewerId", "AchievementType");
+
+                    b.ToTable("ViewerAchievements");
+                });
+
             modelBuilder.Entity("SVSim.Database.Models.ViewerBattlePassClaimEntry", b =>
                 {
                     b.Property<long>("Id")
@@ -1981,6 +2407,87 @@ namespace SVSim.Database.Migrations
                     b.ToTable("ViewerBattlePassProgress");
                 });
 
+            modelBuilder.Entity("SVSim.Database.Models.ViewerEventCounter", b =>
+                {
+                    b.Property<long>("ViewerId")
+                        .HasColumnType("bigint");
+
+                    b.Property<string>("EventKey")
+                        .HasColumnType("text");
+
+                    b.Property<string>("Period")
+                        .HasColumnType("text");
+
+                    b.Property<int>("Count")
+                        .HasColumnType("integer");
+
+                    b.HasKey("ViewerId", "EventKey", "Period");
+
+                    b.HasIndex("ViewerId", "Period");
+
+                    b.ToTable("ViewerEventCounters");
+                });
+
+            modelBuilder.Entity("SVSim.Database.Models.ViewerLeaderSkinSetClaim", b =>
+                {
+                    b.Property<long>("ViewerId")
+                        .HasColumnType("bigint");
+
+                    b.Property<int>("SeriesId")
+                        .HasColumnType("integer");
+
+                    b.Property<DateTime>("ClaimedAt")
+                        .HasColumnType("timestamp with time zone");
+
+                    b.HasKey("ViewerId", "SeriesId");
+
+                    b.HasIndex("ViewerId");
+
+                    b.ToTable("ViewerLeaderSkinSetClaims");
+                });
+
+            modelBuilder.Entity("SVSim.Database.Models.ViewerMission", b =>
+                {
+                    b.Property<long>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("bigint");
+
+                    NpgsqlPropertyBuilderExtensions.UseIdentityByDefaultColumn(b.Property<long>("Id"));
+
+                    b.Property<long>("AssignedAt")
+                        .HasColumnType("bigint");
+
+                    b.Property<long?>("ClaimedAt")
+                        .HasColumnType("bigint");
+
+                    b.Property<DateTime>("DateCreated")
+                        .HasColumnType("timestamp with time zone");
+
+                    b.Property<DateTime?>("DateUpdated")
+                        .HasColumnType("timestamp with time zone");
+
+                    b.Property<int>("MissionCatalogId")
+                        .HasColumnType("integer");
+
+                    b.Property<int>("MissionStatus")
+                        .HasColumnType("integer");
+
+                    b.Property<int>("Slot")
+                        .HasColumnType("integer");
+
+                    b.Property<long>("ViewerId")
+                        .HasColumnType("bigint");
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("ViewerId");
+
+                    b.HasIndex("ViewerId", "Slot")
+                        .IsUnique();
+
+                    b.ToTable("ViewerMissions");
+                });
+
             modelBuilder.Entity("SVSim.Database.Models.ViewerPuzzleClear", b =>
                 {
                     b.Property<long>("ViewerId")
@@ -2000,6 +2507,27 @@ namespace SVSim.Database.Migrations
                     b.ToTable("ViewerPuzzleClears");
                 });
 
+            modelBuilder.Entity("SVSim.Database.Models.ViewerSpotCardExchange", b =>
+                {
+                    b.Property<long>("ViewerId")
+                        .HasColumnType("bigint");
+
+                    b.Property<long>("CardId")
+                        .HasColumnType("bigint");
+
+                    b.Property<DateTime>("ExchangedAt")
+                        .HasColumnType("timestamp with time zone");
+
+                    b.Property<bool>("IsPreRelease")
+                        .HasColumnType("boolean");
+
+                    b.HasKey("ViewerId", "CardId");
+
+                    b.HasIndex("ViewerId");
+
+                    b.ToTable("ViewerSpotCardExchanges");
+                });
+
             modelBuilder.Entity("SleeveEntryViewer", b =>
                 {
                     b.Property<int>("SleevesId")
@@ -2353,6 +2881,86 @@ namespace SVSim.Database.Migrations
                     b.Navigation("Class");
                 });
 
+            modelBuilder.Entity("SVSim.Database.Models.LeaderSkinShopProductEntry", b =>
+                {
+                    b.HasOne("SVSim.Database.Models.LeaderSkinShopSeriesEntry", "Series")
+                        .WithMany("Products")
+                        .HasForeignKey("SeriesId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+
+                    b.OwnsMany("SVSim.Database.Models.LeaderSkinShopProductRewardEntry", "Rewards", b1 =>
+                        {
+                            b1.Property<int>("LeaderSkinShopProductEntryId")
+                                .HasColumnType("integer");
+
+                            b1.Property<int>("Id")
+                                .ValueGeneratedOnAdd()
+                                .HasColumnType("integer");
+
+                            NpgsqlPropertyBuilderExtensions.UseIdentityByDefaultColumn(b1.Property<int>("Id"));
+
+                            b1.Property<int>("OrderIndex")
+                                .HasColumnType("integer");
+
+                            b1.Property<long>("RewardDetailId")
+                                .HasColumnType("bigint");
+
+                            b1.Property<int>("RewardNumber")
+                                .HasColumnType("integer");
+
+                            b1.Property<int>("RewardType")
+                                .HasColumnType("integer");
+
+                            b1.HasKey("LeaderSkinShopProductEntryId", "Id");
+
+                            b1.ToTable("LeaderSkinShopProductRewardEntry");
+
+                            b1.WithOwner()
+                                .HasForeignKey("LeaderSkinShopProductEntryId");
+                        });
+
+                    b.Navigation("Rewards");
+
+                    b.Navigation("Series");
+                });
+
+            modelBuilder.Entity("SVSim.Database.Models.LeaderSkinShopSeriesEntry", b =>
+                {
+                    b.OwnsMany("SVSim.Database.Models.LeaderSkinShopSeriesRewardEntry", "SetCompletionRewards", b1 =>
+                        {
+                            b1.Property<int>("LeaderSkinShopSeriesEntryId")
+                                .HasColumnType("integer");
+
+                            b1.Property<int>("Id")
+                                .ValueGeneratedOnAdd()
+                                .HasColumnType("integer");
+
+                            NpgsqlPropertyBuilderExtensions.UseIdentityByDefaultColumn(b1.Property<int>("Id"));
+
+                            b1.Property<int>("OrderIndex")
+                                .HasColumnType("integer");
+
+                            b1.Property<long>("RewardDetailId")
+                                .HasColumnType("bigint");
+
+                            b1.Property<int>("RewardNumber")
+                                .HasColumnType("integer");
+
+                            b1.Property<int>("RewardType")
+                                .HasColumnType("integer");
+
+                            b1.HasKey("LeaderSkinShopSeriesEntryId", "Id");
+
+                            b1.ToTable("LeaderSkinShopSeriesRewardEntry");
+
+                            b1.WithOwner()
+                                .HasForeignKey("LeaderSkinShopSeriesEntryId");
+                        });
+
+                    b.Navigation("SetCompletionRewards");
+                });
+
             modelBuilder.Entity("SVSim.Database.Models.PackConfigEntry", b =>
                 {
                     b.OwnsMany("SVSim.Database.Models.PackBannerEntry", "Banners", b1 =>
@@ -2570,6 +3178,50 @@ namespace SVSim.Database.Migrations
                     b.Navigation("Sleeve");
                 });
 
+            modelBuilder.Entity("SVSim.Database.Models.SleeveShopProductEntry", b =>
+                {
+                    b.HasOne("SVSim.Database.Models.SleeveShopSeriesEntry", "Series")
+                        .WithMany("Products")
+                        .HasForeignKey("SeriesId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+
+                    b.OwnsMany("SVSim.Database.Models.SleeveShopProductRewardEntry", "Rewards", b1 =>
+                        {
+                            b1.Property<int>("SleeveShopProductEntryId")
+                                .HasColumnType("integer");
+
+                            b1.Property<int>("Id")
+                                .ValueGeneratedOnAdd()
+                                .HasColumnType("integer");
+
+                            NpgsqlPropertyBuilderExtensions.UseIdentityByDefaultColumn(b1.Property<int>("Id"));
+
+                            b1.Property<int>("OrderIndex")
+                                .HasColumnType("integer");
+
+                            b1.Property<long>("RewardDetailId")
+                                .HasColumnType("bigint");
+
+                            b1.Property<int>("RewardNumber")
+                                .HasColumnType("integer");
+
+                            b1.Property<int>("RewardType")
+                                .HasColumnType("integer");
+
+                            b1.HasKey("SleeveShopProductEntryId", "Id");
+
+                            b1.ToTable("SleeveShopProductRewardEntry");
+
+                            b1.WithOwner()
+                                .HasForeignKey("SleeveShopProductEntryId");
+                        });
+
+                    b.Navigation("Rewards");
+
+                    b.Navigation("Series");
+                });
+
             modelBuilder.Entity("SVSim.Database.Models.Viewer", b =>
                 {
                     b.OwnsMany("SVSim.Database.Models.OwnedCardEntry", "Cards", b1 =>
@@ -2672,6 +3324,9 @@ namespace SVSim.Database.Migrations
 
                             b1.HasKey("ViewerId", "Id");
 
+                            b1.HasIndex("AccountType", "AccountId")
+                                .IsUnique();
+
                             b1.ToTable("SocialAccountConnection");
 
                             b1.WithOwner("Viewer")
@@ -2790,6 +3445,9 @@ namespace SVSim.Database.Migrations
                             b1.Property<decimal>("Rupees")
                                 .HasColumnType("numeric(20,0)");
 
+                            b1.Property<decimal>("SpotPoints")
+                                .HasColumnType("numeric(20,0)");
+
                             b1.Property<decimal>("SteamCrystals")
                                 .HasColumnType("numeric(20,0)");
 
@@ -2931,6 +3589,33 @@ namespace SVSim.Database.Migrations
                     b.Navigation("SocialAccountConnections");
                 });
 
+            modelBuilder.Entity("SVSim.Database.Models.ViewerAchievement", b =>
+                {
+                    b.HasOne("SVSim.Database.Models.Viewer", null)
+                        .WithMany("Achievements")
+                        .HasForeignKey("ViewerId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+                });
+
+            modelBuilder.Entity("SVSim.Database.Models.ViewerEventCounter", b =>
+                {
+                    b.HasOne("SVSim.Database.Models.Viewer", null)
+                        .WithMany("EventCounters")
+                        .HasForeignKey("ViewerId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+                });
+
+            modelBuilder.Entity("SVSim.Database.Models.ViewerMission", b =>
+                {
+                    b.HasOne("SVSim.Database.Models.Viewer", null)
+                        .WithMany("Missions")
+                        .HasForeignKey("ViewerId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+                });
+
             modelBuilder.Entity("SleeveEntryViewer", b =>
                 {
                     b.HasOne("SVSim.Database.Models.SleeveEntry", null)
@@ -2961,6 +3646,11 @@ namespace SVSim.Database.Migrations
                     b.Navigation("LeaderSkins");
                 });
 
+            modelBuilder.Entity("SVSim.Database.Models.LeaderSkinShopSeriesEntry", b =>
+                {
+                    b.Navigation("Products");
+                });
+
             modelBuilder.Entity("SVSim.Database.Models.PuzzleGroupEntry", b =>
                 {
                     b.Navigation("Puzzles");
@@ -2971,9 +3661,20 @@ namespace SVSim.Database.Migrations
                     b.Navigation("Cards");
                 });
 
+            modelBuilder.Entity("SVSim.Database.Models.SleeveShopSeriesEntry", b =>
+                {
+                    b.Navigation("Products");
+                });
+
             modelBuilder.Entity("SVSim.Database.Models.Viewer", b =>
                 {
+                    b.Navigation("Achievements");
+
                     b.Navigation("Decks");
+
+                    b.Navigation("EventCounters");
+
+                    b.Navigation("Missions");
                 });
 #pragma warning restore 612, 618
         }

SVSim.Database/Models/AchievementCatalogEntry.cs

@@ -0,0 +1,23 @@
+using SVSim.Database.Common;
+
+namespace SVSim.Database.Models;
+
+/// <summary>
+/// One tier of an achievement. PK is composite (AchievementType, Level). Rows are seeded from
+/// <c>seeds/achievement-catalog.json</c>. The captured tier IS the max tier in our world —
+/// max_level on the wire is computed as MAX(Level) per AchievementType at /mission/info time.
+/// Inherits Id from BaseEntity but the Id is unused; PK is configured in DbContext.
+/// </summary>
+public class AchievementCatalogEntry
+{
+    public int AchievementType { get; set; }
+    public int Level { get; set; }
+    public string Name { get; set; } = "";
+    public int RequireNumber { get; set; }
+    public int RewardType { get; set; }
+    public long RewardDetailId { get; set; }
+    public int RewardNumber { get; set; }
+    public int OrderNum { get; set; }
+    public string? EventType { get; set; }
+    public int? EventArg { get; set; }
+}

SVSim.Database/Models/BattlePassMonthlyMissionEntry.cs

@@ -0,0 +1,28 @@
+using System.ComponentModel.DataAnnotations.Schema;
+using SVSim.Database.Common;
+
+namespace SVSim.Database.Models;
+
+/// <summary>
+/// One row of the BP monthly mission list, keyed to a specific (Year, Month).
+/// `RewardType` is nullable because some monthly missions only award BP points (capture shows
+/// the "Play 5 Challenge matches" entry has no reward_info block on wire).
+/// Id is auto-generated — override BaseEntity's [DatabaseGenerated(None)] default.
+/// </summary>
+public class BattlePassMonthlyMissionEntry : BaseEntity<int>
+{
+    [DatabaseGenerated(DatabaseGeneratedOption.Identity)]
+    public override int Id { get; set; }
+
+    public int Year { get; set; }
+    public int Month { get; set; }
+    public int OrderNum { get; set; }
+    public string Name { get; set; } = "";
+    public int RequireNumber { get; set; }
+    public int BattlePassPoint { get; set; }
+    public int? RewardType { get; set; }
+    public long? RewardDetailId { get; set; }
+    public int? RewardNumber { get; set; }
+    public string? EventType { get; set; }
+    public int? EventArg { get; set; }
+}

SVSim.Database/Models/ItemEntry.cs

@@ -2,7 +2,21 @@ using SVSim.Database.Common;
 
 namespace SVSim.Database.Models;
 
+/// <summary>
+/// Item master row. Mirrors the client's <c>item_master.csv</c> + <c>itemtext.json</c>
+/// (under <c>data_dumps/client_master_csv/</c>): <see cref="Type"/> matches the client-side
+/// item_type enum (1 = challenge ticket, 2 = card-pack ticket, 3 = premium orb,
+/// 4 = colosseum ticket, 5 = orb piece, 6 = skin/event ticket, 7 = other);
+/// <see cref="ThumbnailPath"/> is the client-resolved sprite key.
+/// </summary>
 public class ItemEntry : BaseEntity<int>
 {
     public string Name { get; set; } = string.Empty;
+
+    /// <summary>Client-side item_type enum (1-7). Drives shop categorisation, e.g.
+    /// <c>user_card_pack_ticket_list</c> in /item_purchase/info filters on Type == 2.</summary>
+    public int Type { get; set; }
+
+    /// <summary>Sprite key, e.g. <c>"ticket_10032"</c>. Empty when unknown.</summary>
+    public string ThumbnailPath { get; set; } = string.Empty;
 }

SVSim.Database/Models/ItemPurchaseCatalogEntry.cs

@@ -0,0 +1,39 @@
+using SVSim.Database.Common;
+
+namespace SVSim.Database.Models;
+
+/// <summary>
+/// One row of the /item_purchase/info catalog — an exchange the user can perform N times per
+/// period (monthly or lifetime) by spending <c>RequireItem*</c> to acquire <c>PurchaseItem*</c>.
+/// PK = wire <c>purchase_id</c>.
+/// <para>
+/// Both sides reference <see cref="Enums.UserGoodsType"/>. Captures show the common shape is
+/// currency-for-item (RedEther 5000 → Seer's Globe ×1) or item-for-item (Orb Shard ×5 →
+/// Seer's Globe ×1). Per-viewer remaining quota lives in
+/// <see cref="ViewerEventCounter"/> keyed by <c>"item_purchase:{Id}"</c>.
+/// </para>
+/// </summary>
+public class ItemPurchaseCatalogEntry : BaseEntity<int>
+{
+    public int RequireItemType { get; set; }
+    public long RequireItemId { get; set; }
+    public int RequireItemNum { get; set; }
+
+    public int PurchaseItemType { get; set; }
+    public long PurchaseItemId { get; set; }
+    public int PurchaseItemNum { get; set; }
+
+    /// <summary>
+    /// SystemText-ready display name. May be empty — the client falls back to a templated name
+    /// built from <c>UserGoods.getUserGoodsName + count</c> via SystemText key "Shop_0132".
+    /// </summary>
+    public string PurchaseName { get; set; } = string.Empty;
+
+    /// <summary>True → quota resets at the start of each JST month. False → lifetime quota.</summary>
+    public bool IsMonthlyReset { get; set; }
+
+    /// <summary>Per-period purchase cap. Wire <c>rest</c> = max(0, PurchaseLimit - counter).</summary>
+    public int PurchaseLimit { get; set; }
+
+    public bool IsEnabled { get; set; }
+}

SVSim.Database/Models/LeaderSkinShopProductEntry.cs

@@ -0,0 +1,36 @@
+using SVSim.Database.Common;
+
+namespace SVSim.Database.Models;
+
+/// <summary>
+/// One purchasable leader-skin product. PK = wire product_id (small ints in captures — e.g. 31,
+/// 165, 166). FK <see cref="SeriesId"/>. <see cref="LeaderSkinId"/> points at the
+/// <see cref="LeaderSkinEntry"/> the buyer ends up owning.
+/// </summary>
+public class LeaderSkinShopProductEntry : BaseEntity<int>
+{
+    public int SeriesId { get; set; }
+    public int LeaderSkinId { get; set; }
+
+    /// <summary>SystemText keys — resolved client-side via Data.Master.GetLeaderSkinProductText.</summary>
+    public string ProductNameKey { get; set; } = string.Empty;
+    public string IntroductionKey { get; set; } = string.Empty;
+    public string CvNameKey { get; set; } = string.Empty;
+
+    /// <summary>
+    /// Per-product price for solo buy. Captures consistently show crystal/rupy parity for
+    /// regular skins (500c / 500r single, 400 unit-price when bought as set). Nullable so
+    /// promotions can offer one currency without the other.
+    /// </summary>
+    public int? SinglePriceCrystal { get; set; }
+    public int? SinglePriceRupy { get; set; }
+    public int? SinglePriceTicket { get; set; }
+    public int? TicketNumber { get; set; }
+    public long? TicketItemId { get; set; }
+
+    public bool IsEnabled { get; set; }
+
+    public List<LeaderSkinShopProductRewardEntry> Rewards { get; set; } = new();
+
+    public LeaderSkinShopSeriesEntry? Series { get; set; }
+}

SVSim.Database/Models/LeaderSkinShopProductRewardEntry.cs

@@ -0,0 +1,17 @@
+using Microsoft.EntityFrameworkCore;
+
+namespace SVSim.Database.Models;
+
+/// <summary>
+/// One per-buy reward attached to a leader-skin product. Owned by
+/// <see cref="LeaderSkinShopProductEntry"/>. Captures show each skin product bundles 3 rewards:
+/// the skin itself (type=10), the matching emblem (type=7), and the matching sleeve (type=6).
+/// </summary>
+[Owned]
+public class LeaderSkinShopProductRewardEntry
+{
+    public int OrderIndex { get; set; }
+    public int RewardType { get; set; }   // Wizard.UserGoods.Type
+    public long RewardDetailId { get; set; }
+    public int RewardNumber { get; set; }
+}

SVSim.Database/Models/LeaderSkinShopSeriesEntry.cs

@@ -0,0 +1,33 @@
+using SVSim.Database.Common;
+
+namespace SVSim.Database.Models;
+
+/// <summary>
+/// One leader-skin-shop series (a themed collection — e.g. "7th Anniversary Skins").
+/// PK = wire series_id. <see cref="SetSalesStatus"/> controls whether the per-series
+/// "buy whole set" UI is offered: 0=none (single-skin purchases only), non-zero=set sale active.
+/// When set-active, the set-price + set-completion-reward fields are populated.
+/// </summary>
+public class LeaderSkinShopSeriesEntry : BaseEntity<int>
+{
+    public bool IsNew { get; set; }
+    public bool IsEnabled { get; set; }
+
+    /// <summary>SkinSeriesPurchaseInfo.eSetSalesStatus — 0=None.</summary>
+    public int SetSalesStatus { get; set; }
+
+    public int? SetPriceCrystal { get; set; }
+    public int? SetPriceRupy { get; set; }
+    public int? SetPriceTicket { get; set; }
+    public long? SetPriceTicketId { get; set; }
+
+    /// <summary>
+    /// SkinSeriesPurchaseInfo.RewardStatus — 0=none. The per-VIEWER claim state is computed
+    /// at request time from <see cref="ViewerLeaderSkinSetClaim"/>; this column is the catalog
+    /// default surfaced when no viewer is in context (or when set_sales_status==0).
+    /// </summary>
+    public int SetCompletionRewardStatus { get; set; }
+
+    public List<LeaderSkinShopProductEntry> Products { get; set; } = new();
+    public List<LeaderSkinShopSeriesRewardEntry> SetCompletionRewards { get; set; } = new();
+}

SVSim.Database/Models/LeaderSkinShopSeriesRewardEntry.cs

@@ -0,0 +1,18 @@
+using Microsoft.EntityFrameworkCore;
+
+namespace SVSim.Database.Models;
+
+/// <summary>
+/// One set-completion bonus item attached to a leader-skin series. Owned by
+/// <see cref="LeaderSkinShopSeriesEntry"/>. Granted by /leader_skin/buy_set_item once the
+/// viewer owns every skin in the series. Wire shape: entries inside
+/// <c>rewards.items[]</c> on the per-series block of /leader_skin/products.
+/// </summary>
+[Owned]
+public class LeaderSkinShopSeriesRewardEntry
+{
+    public int OrderIndex { get; set; }
+    public int RewardType { get; set; }
+    public long RewardDetailId { get; set; }
+    public int RewardNumber { get; set; }
+}

SVSim.Database/Models/MissionCatalogEntry.cs

@@ -0,0 +1,26 @@
+using SVSim.Database.Common;
+
+namespace SVSim.Database.Models;
+
+/// <summary>
+/// One mission template. Id = wire mission_id. Rows are seeded from
+/// <c>seeds/mission-catalog.json</c> (extracted from /mission/info captures).
+/// LotType 2 = weekly rotation slot; LotType 6 = daily slot (per UserMission.GEM_MISSION_TYPE).
+/// EventType is the catalog-side key the progress service matches against; NULL means the row
+/// was captured but no event mapping has been added yet (importer logs a warning).
+/// </summary>
+public class MissionCatalogEntry : BaseEntity<int>
+{
+    public string Name { get; set; } = "";
+    public int LotType { get; set; }
+    public int RequireNumber { get; set; }
+    public int RewardType { get; set; }
+    public long RewardDetailId { get; set; }
+    public int RewardNumber { get; set; }
+    public int BattlePassPoint { get; set; }
+    public bool DefaultFlag { get; set; }
+    public string? EventType { get; set; }
+    public int? EventArg { get; set; }
+    public long StartTime { get; set; }
+    public long? EndTime { get; set; }
+}

SVSim.Database/Models/SleeveShopProductEntry.cs

@@ -0,0 +1,32 @@
+using SVSim.Database.Common;
+
+namespace SVSim.Database.Models;
+
+/// <summary>
+/// One purchasable sleeve product. PK = wire product_id (e.g. 301901). FK SeriesId.
+/// <para>
+/// Both <see cref="PriceCrystal"/> and <see cref="PriceRupy"/> are nullable. At least one must be
+/// populated for an enabled product (both zero = free, both null = invalid). Sleeves don't have
+/// the two-tier intro/regular pricing that BuildDeck products use — one price per currency.
+/// </para>
+/// <para>
+/// <see cref="Rewards"/> drives both the catalog display (in /sleeve/info) and the actual grant
+/// list (in /sleeve/buy). The capture shows each sleeve product grants a sleeve (type=6) and an
+/// emblem (type=7) — both faithful reward_detail_ids that exist in the cosmetic catalogs.
+/// </para>
+/// </summary>
+public class SleeveShopProductEntry : BaseEntity<int>
+{
+    public int SeriesId { get; set; }
+    /// <summary>Wire `name` field — SystemText key like "sleeve_138". Localised client-side.</summary>
+    public string NameKey { get; set; } = string.Empty;
+
+    public int? PriceCrystal { get; set; }
+    public int? PriceRupy { get; set; }
+
+    public bool IsEnabled { get; set; }
+
+    public List<SleeveShopProductRewardEntry> Rewards { get; set; } = new();
+
+    public SleeveShopSeriesEntry? Series { get; set; }
+}

SVSim.Database/Models/SleeveShopProductRewardEntry.cs

@@ -0,0 +1,17 @@
+using Microsoft.EntityFrameworkCore;
+
+namespace SVSim.Database.Models;
+
+/// <summary>
+/// One per-buy reward attached to a sleeve product. Owned by <see cref="SleeveShopProductEntry"/>.
+/// Wire shape: one entry of the product-level `rewards` array in /sleeve/info. Order is
+/// preserved by <see cref="OrderIndex"/> since the wire shape is an ordered array, not a dict.
+/// </summary>
+[Owned]
+public class SleeveShopProductRewardEntry
+{
+    public int OrderIndex { get; set; }
+    public int RewardType { get; set; }   // Wizard.UserGoods.Type
+    public long RewardDetailId { get; set; }
+    public int RewardNumber { get; set; }
+}

SVSim.Database/Models/SleeveShopSeriesEntry.cs

@@ -0,0 +1,16 @@
+using SVSim.Database.Common;
+
+namespace SVSim.Database.Models;
+
+/// <summary>
+/// One sleeve-shop series (a themed collection — e.g. series 3019 "BattlePass sleeves",
+/// series 3004 "Granblue Fantasy collab"). PK = wire series_id. IsEnabled gates whether
+/// /sleeve/info renders this series.
+/// </summary>
+public class SleeveShopSeriesEntry : BaseEntity<int>
+{
+    public bool IsNew { get; set; }
+    public bool IsEnabled { get; set; }
+
+    public List<SleeveShopProductEntry> Products { get; set; } = new();
+}

SVSim.Database/Models/SpotCardExchangeEntry.cs

@@ -0,0 +1,30 @@
+using SVSim.Database.Common;
+
+namespace SVSim.Database.Models;
+
+/// <summary>
+/// One catalog entry of the /spot_card_exchange/top shop — a card the viewer can buy with
+/// spot points. PK = wire card_id. Distinct from <see cref="SpotCardEntry"/> (which is the
+/// /load/index data.spot_cards rental-cost list — a different concept).
+/// <para>
+/// <see cref="TsRotationId"/> matches the card_set_id; cards cycle out of the exchange when
+/// their set rotates. <see cref="IsPreRelease"/> distinguishes the pre-release-pool subset
+/// gated by <c>pre_release_spot_card_exchange_limit</c>.
+/// </para>
+/// </summary>
+public class SpotCardExchangeEntry : BaseEntity<long>
+{
+    public long CardId { get => Id; set => Id = value; }
+
+    /// <summary>Wire <c>class</c> field — clan id (0=Neutral, 1=Forestcraft, ..., 8).</summary>
+    public int ClassId { get; set; }
+
+    public int ExchangePoint { get; set; }
+
+    /// <summary>Wire <c>ts_rotation_id</c> — card_set_id this card belongs to.</summary>
+    public long TsRotationId { get; set; }
+
+    public bool IsPreRelease { get; set; }
+
+    public bool IsEnabled { get; set; }
+}

SVSim.Database/Models/Viewer.cs

@@ -8,6 +8,7 @@ namespace SVSim.Database.Models;
 /// A user within the game system.
 /// </summary>
 [Index(nameof(ShortUdid))]
+[Index(nameof(Udid), IsUnique = true)]
 public class Viewer : BaseEntity<long>
 {
     [DatabaseGenerated(DatabaseGeneratedOption.Identity)]
@@ -17,11 +18,18 @@ public class Viewer : BaseEntity<long>
     /// This user's name displayed in game.
     /// </summary>
     public string DisplayName { get; set; } = String.Empty;
-    
+
     /// <summary>
     /// This user's short identifier.
     /// </summary>
     public long ShortUdid { get; set; }
+
+    /// <summary>
+    /// The client's full UDID (AES key for the wire protocol). Set when the viewer is created
+    /// via <c>/tool/signup</c>; null for viewers created via the admin Steam-import path. Unique
+    /// when present — the partial filter is declared in the migration.
+    /// </summary>
+    public Guid? Udid { get; set; }
     
     public DateTime LastLogin { get; set; }
 
@@ -59,6 +67,12 @@ public class Viewer : BaseEntity<long>
 
     public List<ViewerBuildDeckProductPurchase> BuildDeckPurchases { get; set; } = new List<ViewerBuildDeckProductPurchase>();
 
+    public List<ViewerMission> Missions { get; set; } = new List<ViewerMission>();
+
+    public List<ViewerAchievement> Achievements { get; set; } = new List<ViewerAchievement>();
+
+    public List<ViewerEventCounter> EventCounters { get; set; } = new List<ViewerEventCounter>();
+
     #endregion
 
     #region Navigation Properties

SVSim.Database/Models/ViewerAchievement.cs

@@ -0,0 +1,17 @@
+namespace SVSim.Database.Models;
+
+/// <summary>
+/// Per-viewer state for one achievement type. Composite PK (ViewerId, AchievementType) configured
+/// in DbContext. <c>Level</c> is the viewer's current tier; <c>max_level</c> on the wire is
+/// derived from catalog as MAX(Level) per type. Lazy-created at /load/index time — one row per
+/// AchievementCatalogEntries.AchievementType that the viewer doesn't yet have a row for.
+/// </summary>
+public class ViewerAchievement
+{
+    public long ViewerId { get; set; }
+    public int AchievementType { get; set; }
+    public int Level { get; set; } = 1;
+    public int AchievementStatus { get; set; }
+    public int NowAchievedLevel { get; set; }
+    public int ResultAnnounceSawLevel { get; set; }
+}

SVSim.Database/Models/ViewerCurrency.cs

@@ -14,4 +14,11 @@ public class ViewerCurrency
     public ulong LifeTotalCrystals { get; set; }
     public ulong RedEther { get; set; }
     public ulong Rupees { get; set; }
+
+    /// <summary>
+    /// Spot card points — currency earned from battles/missions, spent at /spot_card_exchange/exchange.
+    /// Wire field <c>spot_point</c> in /load/index and /spot_card_exchange/top; reward_type 12
+    /// (<see cref="Enums.UserGoodsType.SpotCardPoint"/>) in reward_list entries.
+    /// </summary>
+    public ulong SpotPoints { get; set; }
 }

SVSim.Database/Models/ViewerEventCounter.cs

@@ -0,0 +1,15 @@
+namespace SVSim.Database.Models;
+
+/// <summary>
+/// Per-viewer "how many times has this happened" counter. Composite PK
+/// (ViewerId, EventKey, Period). Period strings: "all-time", "month:YYYY-MM",
+/// "week:YYYY-W##", "day:YYYY-MM-DD" — all JST-anchored with 02:00 day-boundary.
+/// Single source of truth for total_count / done_number on every wire shape.
+/// </summary>
+public class ViewerEventCounter
+{
+    public long ViewerId { get; set; }
+    public string EventKey { get; set; } = "";
+    public string Period { get; set; } = "";
+    public int Count { get; set; }
+}

SVSim.Database/Models/ViewerLeaderSkinSetClaim.cs

@@ -0,0 +1,14 @@
+namespace SVSim.Database.Models;
+
+/// <summary>
+/// One row per (viewer, leader-skin series) marking that the viewer has claimed the
+/// series-completion bonus via /leader_skin/buy_set_item. Composite PK (ViewerId, SeriesId).
+/// Standalone table (not a Viewer owned collection) to avoid the cartesian-explode pitfall
+/// when loading the viewer graph — claim state is checked per-series, not per-viewer-load.
+/// </summary>
+public class ViewerLeaderSkinSetClaim
+{
+    public long ViewerId { get; set; }
+    public int SeriesId { get; set; }
+    public DateTime ClaimedAt { get; set; }
+}

SVSim.Database/Models/ViewerMission.cs

@@ -0,0 +1,24 @@
+using System.ComponentModel.DataAnnotations.Schema;
+using SVSim.Database.Common;
+
+namespace SVSim.Database.Models;
+
+/// <summary>
+/// One assigned mission slot for a viewer. <c>Id</c> is the wire <c>UserMission.id</c> — echoed
+/// back as the retire-request parameter, auto-generated. Slot 0 = daily (lot_type=6),
+/// Slots 1..3 = weekly (lot_type=2). Progress (<c>total_count</c> on the wire) is NOT stored
+/// here — it's read from <see cref="ViewerEventCounter"/> at response-build time, keyed by the
+/// catalog row's EventType.
+/// </summary>
+public class ViewerMission : BaseEntity<long>
+{
+    [DatabaseGenerated(DatabaseGeneratedOption.Identity)]
+    public override long Id { get; set; }
+
+    public long ViewerId { get; set; }
+    public int MissionCatalogId { get; set; }
+    public int Slot { get; set; }
+    public long AssignedAt { get; set; }
+    public long? ClaimedAt { get; set; }
+    public int MissionStatus { get; set; } = 1;
+}

SVSim.Database/Models/ViewerSpotCardExchange.cs

@@ -0,0 +1,16 @@
+namespace SVSim.Database.Models;
+
+/// <summary>
+/// One row per (viewer, exchanged card). Composite PK (ViewerId, CardId). Standalone table
+/// (not a Viewer owned collection) to avoid cartesian-explode on viewer-graph reads.
+/// <see cref="IsPreRelease"/> snapshot at exchange time so the pre-release counter can be
+/// computed without joining back to <see cref="SpotCardExchangeEntry"/> (and to survive
+/// catalog edits that re-classify a card).
+/// </summary>
+public class ViewerSpotCardExchange
+{
+    public long ViewerId { get; set; }
+    public long CardId { get; set; }
+    public bool IsPreRelease { get; set; }
+    public DateTime ExchangedAt { get; set; }
+}

SVSim.Database/Repositories/Mission/IMissionCatalogRepository.cs

@@ -0,0 +1,29 @@
+using SVSim.Database.Models;
+
+namespace SVSim.Database.Repositories.Mission;
+
+public interface IMissionCatalogRepository
+{
+    Task<List<MissionCatalogEntry>> GetByLotTypeAsync(int lotType, CancellationToken ct);
+    Task<List<MissionCatalogEntry>> GetByIdsAsync(IReadOnlyCollection<int> ids, CancellationToken ct);
+    Task<MissionCatalogEntry?> GetByIdAsync(int id, CancellationToken ct);
+
+    Task<List<MissionCatalogEntry>> GetByEventTypesAsync(IReadOnlyCollection<string> eventTypes, CancellationToken ct);
+    Task<List<AchievementCatalogEntry>> GetAchievementsByEventTypesAsync(IReadOnlyCollection<string> eventTypes, CancellationToken ct);
+
+    /// <summary>All distinct achievement_type values present in the catalog. Used by /load/index materialization.</summary>
+    Task<List<int>> GetAllAchievementTypesAsync(CancellationToken ct);
+
+    /// <summary>MIN(Level) per achievement_type — the "starting tier" for new viewers when the
+    /// catalog doesn't contain a level-1 row. With our captured-data-is-catalog model, a fresh
+    /// viewer starts at whatever the lowest captured tier is for that type.</summary>
+    Task<IReadOnlyDictionary<int, int>> GetMinLevelByAchievementTypeAsync(CancellationToken ct);
+
+    /// <summary>MAX(Level) per achievement_type — cached. Used to compute wire max_level.</summary>
+    Task<IReadOnlyDictionary<int, int>> GetMaxLevelByAchievementTypeAsync(CancellationToken ct);
+
+    /// <summary>Catalog row at (type, level), or null if no such tier has been captured.</summary>
+    Task<AchievementCatalogEntry?> GetAchievementAsync(int achievementType, int level, CancellationToken ct);
+
+    Task<List<BattlePassMonthlyMissionEntry>> GetMonthlyMissionsAsync(int year, int month, CancellationToken ct);
+}

SVSim.Database/Repositories/Mission/IViewerMissionRepository.cs

@@ -0,0 +1,34 @@
+using SVSim.Database.Models;
+
+namespace SVSim.Database.Repositories.Mission;
+
+public interface IViewerMissionRepository
+{
+    Task<List<ViewerMission>> GetMissionsAsync(long viewerId, CancellationToken ct);
+    Task<ViewerMission?> GetMissionByIdAsync(long viewerId, long missionId, CancellationToken ct);
+
+    Task<List<ViewerAchievement>> GetAchievementsAsync(long viewerId, CancellationToken ct);
+    Task<ViewerAchievement?> GetAchievementAsync(long viewerId, int achievementType, CancellationToken ct);
+
+    /// <summary>Reads counter rows for (viewerId, eventKey IN list, period IN list). Empty inputs return [].</summary>
+    Task<List<ViewerEventCounter>> GetCountersAsync(
+        long viewerId,
+        IReadOnlyCollection<string> eventKeys,
+        IReadOnlyCollection<string> periods,
+        CancellationToken ct);
+
+    /// <summary>Single-row counter read. Returns 0 if no row exists.</summary>
+    Task<int> GetCounterAsync(long viewerId, string eventKey, string period, CancellationToken ct);
+
+    /// <summary>Add a viewer mission row (in-memory; caller saves).</summary>
+    void AddMission(ViewerMission row);
+
+    /// <summary>Remove a viewer mission row (in-memory; caller saves).</summary>
+    void RemoveMission(ViewerMission row);
+
+    /// <summary>Add a viewer achievement row (in-memory; caller saves).</summary>
+    void AddAchievement(ViewerAchievement row);
+
+    /// <summary>Upsert a counter delta (in-memory; caller saves). Creates the row if missing.</summary>
+    Task UpsertCounterAsync(long viewerId, string eventKey, string period, int delta, CancellationToken ct);
+}

SVSim.Database/Repositories/Mission/MissionCatalogRepository.cs

@@ -0,0 +1,77 @@
+using Microsoft.EntityFrameworkCore;
+using SVSim.Database.Models;
+
+namespace SVSim.Database.Repositories.Mission;
+
+public sealed class MissionCatalogRepository : IMissionCatalogRepository
+{
+    private readonly SVSimDbContext _db;
+
+    // Process-level cache for the derived MAX(Level) lookup. Cleared on host restart
+    // (re-bootstrap is the only legitimate way to mutate the catalog at runtime).
+    private static IReadOnlyDictionary<int, int>? _maxLevelCache;
+    private static readonly SemaphoreSlim _maxLevelLock = new(1, 1);
+
+    public MissionCatalogRepository(SVSimDbContext db) { _db = db; }
+
+    public Task<List<MissionCatalogEntry>> GetByLotTypeAsync(int lotType, CancellationToken ct) =>
+        _db.MissionCatalog.AsNoTracking().Where(e => e.LotType == lotType).ToListAsync(ct);
+
+    public Task<List<MissionCatalogEntry>> GetByIdsAsync(IReadOnlyCollection<int> ids, CancellationToken ct) =>
+        _db.MissionCatalog.AsNoTracking().Where(e => ids.Contains(e.Id)).ToListAsync(ct);
+
+    public Task<MissionCatalogEntry?> GetByIdAsync(int id, CancellationToken ct) =>
+        _db.MissionCatalog.AsNoTracking().FirstOrDefaultAsync(e => e.Id == id, ct);
+
+    public Task<List<MissionCatalogEntry>> GetByEventTypesAsync(IReadOnlyCollection<string> eventTypes, CancellationToken ct) =>
+        _db.MissionCatalog.AsNoTracking()
+            .Where(e => e.EventType != null && eventTypes.Contains(e.EventType))
+            .ToListAsync(ct);
+
+    public Task<List<AchievementCatalogEntry>> GetAchievementsByEventTypesAsync(IReadOnlyCollection<string> eventTypes, CancellationToken ct) =>
+        _db.AchievementCatalog.AsNoTracking()
+            .Where(e => e.EventType != null && eventTypes.Contains(e.EventType))
+            .ToListAsync(ct);
+
+    public Task<List<int>> GetAllAchievementTypesAsync(CancellationToken ct) =>
+        _db.AchievementCatalog.AsNoTracking()
+            .Select(e => e.AchievementType).Distinct()
+            .ToListAsync(ct);
+
+    public async Task<IReadOnlyDictionary<int, int>> GetMaxLevelByAchievementTypeAsync(CancellationToken ct)
+    {
+        if (_maxLevelCache is not null) return _maxLevelCache;
+        await _maxLevelLock.WaitAsync(ct);
+        try
+        {
+            if (_maxLevelCache is null)
+            {
+                var pairs = await _db.AchievementCatalog.AsNoTracking()
+                    .GroupBy(e => e.AchievementType)
+                    .Select(g => new { Type = g.Key, Max = g.Max(e => e.Level) })
+                    .ToListAsync(ct);
+                _maxLevelCache = pairs.ToDictionary(p => p.Type, p => p.Max);
+            }
+            return _maxLevelCache;
+        }
+        finally { _maxLevelLock.Release(); }
+    }
+
+    public async Task<IReadOnlyDictionary<int, int>> GetMinLevelByAchievementTypeAsync(CancellationToken ct)
+    {
+        var pairs = await _db.AchievementCatalog.AsNoTracking()
+            .GroupBy(e => e.AchievementType)
+            .Select(g => new { Type = g.Key, Min = g.Min(e => e.Level) })
+            .ToListAsync(ct);
+        return pairs.ToDictionary(p => p.Type, p => p.Min);
+    }
+
+    public Task<AchievementCatalogEntry?> GetAchievementAsync(int achievementType, int level, CancellationToken ct) =>
+        _db.AchievementCatalog.AsNoTracking()
+            .FirstOrDefaultAsync(e => e.AchievementType == achievementType && e.Level == level, ct);
+
+    public Task<List<BattlePassMonthlyMissionEntry>> GetMonthlyMissionsAsync(int year, int month, CancellationToken ct) =>
+        _db.BattlePassMonthlyMissions.AsNoTracking()
+            .Where(e => e.Year == year && e.Month == month)
+            .OrderBy(e => e.OrderNum).ToListAsync(ct);
+}

SVSim.Database/Repositories/Mission/ViewerMissionRepository.cs

@@ -0,0 +1,67 @@
+using Microsoft.EntityFrameworkCore;
+using SVSim.Database.Models;
+
+namespace SVSim.Database.Repositories.Mission;
+
+public sealed class ViewerMissionRepository : IViewerMissionRepository
+{
+    private readonly SVSimDbContext _db;
+
+    public ViewerMissionRepository(SVSimDbContext db) { _db = db; }
+
+    public Task<List<ViewerMission>> GetMissionsAsync(long viewerId, CancellationToken ct) =>
+        _db.ViewerMissions.Where(e => e.ViewerId == viewerId).OrderBy(e => e.Slot).ToListAsync(ct);
+
+    public Task<ViewerMission?> GetMissionByIdAsync(long viewerId, long missionId, CancellationToken ct) =>
+        _db.ViewerMissions.FirstOrDefaultAsync(e => e.ViewerId == viewerId && e.Id == missionId, ct);
+
+    public Task<List<ViewerAchievement>> GetAchievementsAsync(long viewerId, CancellationToken ct) =>
+        _db.ViewerAchievements.Where(e => e.ViewerId == viewerId).ToListAsync(ct);
+
+    public Task<ViewerAchievement?> GetAchievementAsync(long viewerId, int achievementType, CancellationToken ct) =>
+        _db.ViewerAchievements.FirstOrDefaultAsync(
+            e => e.ViewerId == viewerId && e.AchievementType == achievementType, ct);
+
+    public Task<List<ViewerEventCounter>> GetCountersAsync(
+        long viewerId,
+        IReadOnlyCollection<string> eventKeys,
+        IReadOnlyCollection<string> periods,
+        CancellationToken ct)
+    {
+        if (eventKeys.Count == 0 || periods.Count == 0) return Task.FromResult(new List<ViewerEventCounter>());
+        return _db.ViewerEventCounters.AsNoTracking()
+            .Where(e => e.ViewerId == viewerId
+                        && eventKeys.Contains(e.EventKey)
+                        && periods.Contains(e.Period))
+            .ToListAsync(ct);
+    }
+
+    public async Task<int> GetCounterAsync(long viewerId, string eventKey, string period, CancellationToken ct)
+    {
+        var row = await _db.ViewerEventCounters.AsNoTracking()
+            .FirstOrDefaultAsync(
+                e => e.ViewerId == viewerId && e.EventKey == eventKey && e.Period == period, ct);
+        return row?.Count ?? 0;
+    }
+
+    public void AddMission(ViewerMission row) => _db.ViewerMissions.Add(row);
+    public void RemoveMission(ViewerMission row) => _db.ViewerMissions.Remove(row);
+    public void AddAchievement(ViewerAchievement row) => _db.ViewerAchievements.Add(row);
+
+    public async Task UpsertCounterAsync(long viewerId, string eventKey, string period, int delta, CancellationToken ct)
+    {
+        var row = await _db.ViewerEventCounters.FirstOrDefaultAsync(
+            e => e.ViewerId == viewerId && e.EventKey == eventKey && e.Period == period, ct);
+        if (row is null)
+        {
+            _db.ViewerEventCounters.Add(new ViewerEventCounter
+            {
+                ViewerId = viewerId, EventKey = eventKey, Period = period, Count = delta,
+            });
+        }
+        else
+        {
+            row.Count += delta;
+        }
+    }
+}

SVSim.Database/Repositories/Viewer/IViewerRepository.cs

@@ -7,7 +7,10 @@ public interface IViewerRepository
     Task<Models.Viewer?> GetViewerBySocialConnection(SocialAccountType accountType, ulong socialId);
     Task<Models.Viewer?> GetViewerWithSocials(long id);
     Task<Models.Viewer?> GetViewerByShortUdid(long shortUdid);
+    Task<Models.Viewer?> GetViewerByUdid(Guid udid);
 
     Task<Models.Viewer> RegisterViewer(string displayName, SocialAccountType socialType,
         ulong socialAccountIdentifier, ulong? shortUdid = null);
-}
+    Task<Models.Viewer> RegisterAnonymousViewer(Guid udid);
+    Task LinkSteamToViewer(long viewerId, ulong steamId);
+}

SVSim.Database/Repositories/Viewer/ViewerRepository.cs

@@ -1,4 +1,5 @@
 using Microsoft.EntityFrameworkCore;
+using Npgsql;
 using SVSim.Database.Enums;
 using SVSim.Database.Models;
 using SVSim.Database.Models.Config;
@@ -70,6 +71,100 @@ public class ViewerRepository : IViewerRepository
 
     public async Task<Models.Viewer> RegisterViewer(string displayName, SocialAccountType socialType,
         ulong socialAccountIdentifier, ulong? shortUdid = null)
+    {
+        var viewer = await BuildDefaultViewer(displayName);
+        viewer.SocialAccountConnections.Add(new SocialAccountConnection
+        {
+            AccountId = socialAccountIdentifier,
+            AccountType = socialType
+        });
+        _dbContext.Set<Models.Viewer>().Add(viewer);
+        await _dbContext.SaveChangesAsync();
+        return viewer;
+    }
+
+    public async Task<Models.Viewer?> GetViewerByUdid(Guid udid)
+    {
+        if (udid == Guid.Empty) return null;
+        return await _dbContext.Set<Models.Viewer>()
+            .AsNoTracking()
+            .FirstOrDefaultAsync(v => v.Udid == udid);
+    }
+
+    public async Task<Models.Viewer> RegisterAnonymousViewer(Guid udid)
+    {
+        if (udid == Guid.Empty)
+            throw new InvalidOperationException("Cannot register viewer for empty UDID.");
+
+        var viewer = await BuildDefaultViewer("Player");
+        viewer.Udid = udid;
+        _dbContext.Set<Models.Viewer>().Add(viewer);
+        try
+        {
+            await _dbContext.SaveChangesAsync();
+        }
+        catch (DbUpdateException ex) when (IsUniqueViolation(ex))
+        {
+            // Concurrent signup for the same UDID raced us to the unique index. The other request
+            // already committed a viewer with this UDID — re-read and return it. Detach the local
+            // entity first so EF doesn't keep trying to insert the now-orphaned graph.
+            //
+            // Cross-engine: Postgres surfaces this as Npgsql.PostgresException SqlState "23505";
+            // SQLite (test backend) surfaces it as Microsoft.Data.Sqlite.SqliteException with
+            // SqliteErrorCode 19 (SQLITE_CONSTRAINT). Matched by type-name to avoid pulling a
+            // Sqlite package dep into SVSim.Database.
+            _dbContext.Entry(viewer).State = EntityState.Detached;
+            var existing = await GetViewerByUdid(udid)
+                ?? throw new InvalidOperationException(
+                    $"Got unique-violation on Udid={udid} insert but subsequent lookup found no row. " +
+                    "This shouldn't happen — likely transaction isolation issue.");
+            return existing;
+        }
+        return viewer;
+    }
+
+    /// <summary>
+    /// Returns true if the given <see cref="DbUpdateException"/> wraps a backend-level unique-
+    /// constraint violation. Postgres → SqlState "23505"; SQLite → SqliteErrorCode 19.
+    /// </summary>
+    private static bool IsUniqueViolation(DbUpdateException ex)
+    {
+        if (ex.InnerException is Npgsql.PostgresException pgEx && pgEx.SqlState == "23505")
+        {
+            return true;
+        }
+        // Match SQLite by type name so this assembly doesn't take a dep on Microsoft.Data.Sqlite.
+        // Test backend (SQLite in-memory) raises SqliteException with SqliteErrorCode 19 on UNIQUE
+        // constraint violations.
+        var inner = ex.InnerException;
+        if (inner is not null && inner.GetType().FullName == "Microsoft.Data.Sqlite.SqliteException")
+        {
+            var prop = inner.GetType().GetProperty("SqliteErrorCode");
+            if (prop?.GetValue(inner) is int code && code == 19) return true;
+        }
+        return false;
+    }
+
+    public async Task LinkSteamToViewer(long viewerId, ulong steamId)
+    {
+        var viewer = await _dbContext.Set<Models.Viewer>()
+            .Include(v => v.SocialAccountConnections)
+            .FirstOrDefaultAsync(v => v.Id == viewerId)
+            ?? throw new InvalidOperationException($"Viewer {viewerId} not found for Steam link.");
+
+        bool alreadyLinked = viewer.SocialAccountConnections.Any(sac =>
+            sac.AccountType == SocialAccountType.Steam && sac.AccountId == steamId);
+        if (alreadyLinked) return;
+
+        viewer.SocialAccountConnections.Add(new SocialAccountConnection
+        {
+            AccountId = steamId,
+            AccountType = SocialAccountType.Steam
+        });
+        await _dbContext.SaveChangesAsync();
+    }
+
+    private async Task<Models.Viewer> BuildDefaultViewer(string displayName)
     {
         Models.Viewer viewer = new Models.Viewer
         {
@@ -79,12 +174,6 @@ public class ViewerRepository : IViewerRepository
         var grants = _config.Get<DefaultGrantsConfig>();
         var loadout = _config.Get<DefaultLoadoutConfig>();
 
-        viewer.SocialAccountConnections.Add(new SocialAccountConnection
-        {
-            AccountId = socialAccountIdentifier,
-            AccountType = socialType
-        });
-
         viewer.Info.MaxFriends = player.MaxFriends;
         viewer.Info.CountryCode = "KOR";
         viewer.Info.BirthDate = DateTime.UtcNow;
@@ -133,8 +222,6 @@ public class ViewerRepository : IViewerRepository
             .ToList();
         viewer.LeaderSkins.AddRange(grantedSkins);
 
-        _dbContext.Set<Models.Viewer>().Add(viewer);
-        await _dbContext.SaveChangesAsync();
         return viewer;
     }
 }

SVSim.Database/SVSimDbContext.cs

@@ -54,6 +54,12 @@ public class SVSimDbContext : DbContext
     public DbSet<BattlePassRewardEntry> BattlePassRewards => Set<BattlePassRewardEntry>();
     public DbSet<ViewerBattlePassProgressEntry> ViewerBattlePassProgress => Set<ViewerBattlePassProgressEntry>();
     public DbSet<ViewerBattlePassClaimEntry> ViewerBattlePassClaims => Set<ViewerBattlePassClaimEntry>();
+    public DbSet<MissionCatalogEntry> MissionCatalog => Set<MissionCatalogEntry>();
+    public DbSet<AchievementCatalogEntry> AchievementCatalog => Set<AchievementCatalogEntry>();
+    public DbSet<BattlePassMonthlyMissionEntry> BattlePassMonthlyMissions => Set<BattlePassMonthlyMissionEntry>();
+    public DbSet<ViewerMission> ViewerMissions => Set<ViewerMission>();
+    public DbSet<ViewerAchievement> ViewerAchievements => Set<ViewerAchievement>();
+    public DbSet<ViewerEventCounter> ViewerEventCounters => Set<ViewerEventCounter>();
     public DbSet<DailyLoginBonusEntry> DailyLoginBonuses => Set<DailyLoginBonusEntry>();
     public DbSet<BannerEntry> Banners => Set<BannerEntry>();
     public DbSet<ColosseumConfig> Colosseums => Set<ColosseumConfig>();
@@ -64,6 +70,14 @@ public class SVSimDbContext : DbContext
     public DbSet<PackConfigEntry> Packs => Set<PackConfigEntry>();
     public DbSet<BuildDeckSeriesEntry> BuildDeckSeries => Set<BuildDeckSeriesEntry>();
     public DbSet<BuildDeckProductEntry> BuildDeckProducts => Set<BuildDeckProductEntry>();
+    public DbSet<SleeveShopSeriesEntry> SleeveShopSeries => Set<SleeveShopSeriesEntry>();
+    public DbSet<SleeveShopProductEntry> SleeveShopProducts => Set<SleeveShopProductEntry>();
+    public DbSet<ItemPurchaseCatalogEntry> ItemPurchaseCatalog => Set<ItemPurchaseCatalogEntry>();
+    public DbSet<LeaderSkinShopSeriesEntry> LeaderSkinShopSeries => Set<LeaderSkinShopSeriesEntry>();
+    public DbSet<LeaderSkinShopProductEntry> LeaderSkinShopProducts => Set<LeaderSkinShopProductEntry>();
+    public DbSet<ViewerLeaderSkinSetClaim> ViewerLeaderSkinSetClaims => Set<ViewerLeaderSkinSetClaim>();
+    public DbSet<SpotCardExchangeEntry> SpotCardExchangeCatalog => Set<SpotCardExchangeEntry>();
+    public DbSet<ViewerSpotCardExchange> ViewerSpotCardExchanges => Set<ViewerSpotCardExchange>();
     public DbSet<MaintenanceCardEntry> MaintenanceCards => Set<MaintenanceCardEntry>();
     public DbSet<FeatureMaintenanceEntry> FeatureMaintenances => Set<FeatureMaintenanceEntry>();
     public DbSet<PreReleaseInfo> PreReleaseInfos => Set<PreReleaseInfo>();
@@ -151,6 +165,17 @@ public class SVSimDbContext : DbContext
             b.HasIndex("ViewerId", "ProductId").IsUnique();
         });
 
+        // A given social account links to exactly one viewer — two viewers cannot share the same
+        // Steam (or Facebook, etc.) account. This is the dedup backstop the auth handler's find-
+        // or-link path (SteamSessionAuthenticationHandler) relies on: two concurrent first-Steam-
+        // touch requests can both pass the .Any(...) check in LinkSteamToViewer, but the second
+        // SaveChanges() throws unique-violation and surfaces a clean 500 instead of silently
+        // appending duplicate connections.
+        modelBuilder.Entity<Viewer>().OwnsMany(v => v.SocialAccountConnections, b =>
+        {
+            b.HasIndex("AccountType", "AccountId").IsUnique();
+        });
+
         modelBuilder.Entity<BuildDeckSeriesEntry>().OwnsMany(s => s.SeriesRewards);
         modelBuilder.Entity<BuildDeckProductEntry>().OwnsMany(p => p.Cards);
         modelBuilder.Entity<BuildDeckProductEntry>().OwnsMany(p => p.Rewards);
@@ -163,6 +188,35 @@ public class SVSimDbContext : DbContext
 
         modelBuilder.Entity<BuildDeckProductEntry>().HasIndex(p => p.SeriesId);
 
+        modelBuilder.Entity<SleeveShopProductEntry>().OwnsMany(p => p.Rewards);
+        modelBuilder.Entity<SleeveShopProductEntry>()
+            .HasOne(p => p.Series)
+            .WithMany(s => s.Products)
+            .HasForeignKey(p => p.SeriesId)
+            .OnDelete(DeleteBehavior.Cascade);
+        modelBuilder.Entity<SleeveShopProductEntry>().HasIndex(p => p.SeriesId);
+
+        modelBuilder.Entity<LeaderSkinShopSeriesEntry>().OwnsMany(s => s.SetCompletionRewards);
+        modelBuilder.Entity<LeaderSkinShopProductEntry>().OwnsMany(p => p.Rewards);
+        modelBuilder.Entity<LeaderSkinShopProductEntry>()
+            .HasOne(p => p.Series)
+            .WithMany(s => s.Products)
+            .HasForeignKey(p => p.SeriesId)
+            .OnDelete(DeleteBehavior.Cascade);
+        modelBuilder.Entity<LeaderSkinShopProductEntry>().HasIndex(p => p.SeriesId);
+
+        modelBuilder.Entity<ViewerLeaderSkinSetClaim>(b =>
+        {
+            b.HasKey(c => new { c.ViewerId, c.SeriesId });
+            b.HasIndex(c => c.ViewerId);
+        });
+
+        modelBuilder.Entity<ViewerSpotCardExchange>(b =>
+        {
+            b.HasKey(e => new { e.ViewerId, e.CardId });
+            b.HasIndex(e => e.ViewerId);
+        });
+
         modelBuilder.Entity<CardCosmeticReward>(b =>
         {
             b.HasKey(r => new { r.CardId, r.Type, r.CosmeticId });
@@ -242,6 +296,46 @@ public class SVSimDbContext : DbContext
             b.HasIndex(e => new { e.ViewerId, e.SeasonId });
         });
 
+        modelBuilder.Entity<MissionCatalogEntry>(b =>
+        {
+            b.HasKey(e => e.Id);
+            b.Property(e => e.Id).ValueGeneratedNever();
+            b.HasIndex(e => e.LotType);
+            b.HasIndex(e => new { e.EventType, e.EventArg });
+        });
+
+        modelBuilder.Entity<AchievementCatalogEntry>(b =>
+        {
+            b.HasKey(e => new { e.AchievementType, e.Level });
+            b.HasIndex(e => e.AchievementType);
+            b.HasIndex(e => new { e.EventType, e.EventArg });
+        });
+
+        modelBuilder.Entity<BattlePassMonthlyMissionEntry>(b =>
+        {
+            b.HasKey(e => e.Id);
+            b.HasIndex(e => new { e.Year, e.Month, e.OrderNum }).IsUnique();
+            b.HasIndex(e => new { e.Year, e.Month });
+        });
+
+        modelBuilder.Entity<ViewerMission>(b =>
+        {
+            b.HasKey(e => e.Id);
+            b.HasIndex(e => new { e.ViewerId, e.Slot }).IsUnique();
+            b.HasIndex(e => e.ViewerId);
+        });
+
+        modelBuilder.Entity<ViewerAchievement>(b =>
+        {
+            b.HasKey(e => new { e.ViewerId, e.AchievementType });
+        });
+
+        modelBuilder.Entity<ViewerEventCounter>(b =>
+        {
+            b.HasKey(e => new { e.ViewerId, e.EventKey, e.Period });
+            b.HasIndex(e => new { e.ViewerId, e.Period });
+        });
+
         base.OnModelCreating(modelBuilder);
     }
 

SVSim.Database/Services/RewardGrantService.cs

@@ -20,8 +20,9 @@ public sealed record GrantedReward(int RewardType, long RewardId, int RewardNum)
 ///
 /// <para>
 /// <b>DO NOT reimplement reward dispatch in a controller or new helper.</b> This service handles
-/// RedEther, Crystal, Item, Card (with <see cref="CardCosmeticReward"/> cascade), Sleeve, Emblem,
+/// RedEther, Crystal, SpotCardPoint, Item, Card (with <see cref="CardCosmeticReward"/> cascade),
-/// Degree, Rupy, Skin, MyPageBG — everything except SpotCard (TODO). Endpoint code that takes a
+/// Sleeve, Emblem, Degree, Rupy, Skin, MyPageBG — everything except the dead-letter SpotCard /
+/// SpotCardOnlyLatestCardPack slots (use Card=5 instead). Endpoint code that takes a
 /// list of <c>(type, id, num)</c> tuples should iterate and call <see cref="ApplyAsync"/>
 /// per tuple — never switch on type yourself, never filter to "only card-typed rewards", never
 /// build a second dispatch table. Past duplicate implementations (ICardAcquisitionService in the
@@ -87,6 +88,10 @@ public sealed class RewardGrantService
                 viewer.Currency.RedEther += (ulong)num;
                 return Single(type, detailId, checked((int)viewer.Currency.RedEther));
 
+            case UserGoodsType.SpotCardPoint:
+                viewer.Currency.SpotPoints += (ulong)num;
+                return Single(type, detailId, checked((int)viewer.Currency.SpotPoints));
+
             case UserGoodsType.Item:
             {
                 var owned = viewer.Items.FirstOrDefault(i => i.Item.Id == (int)detailId);
@@ -106,11 +111,11 @@ public sealed class RewardGrantService
 
             case UserGoodsType.SpotCard:
             case UserGoodsType.SpotCardOnlyLatestCardPack:
-                // TODO: spot cards are currently global in our seed data; the existence of these
+                // Spot-card-typed grants don't appear in captures — emitters always use Card=5
-                // reward types suggests there's a mix of global + per-player spot cards. Revisit
+                // with the spot-card-specific id. These two enum slots remain unimplemented; if a
-                // when per-player spot-card infrastructure lands.
+                // capture ever shows one in a reward_list we'll know to wire them up here.
                 throw new NotSupportedException(
-                    $"{type} rewards are not yet supported — see SpotCard TODO in RewardGrantService.");
+                    $"{type} rewards are not yet supported — emitters use Card=5 instead.");
 
             default:
                 throw new NotSupportedException($"UserGoodsType {type} not yet handled by RewardGrantService");

SVSim.EmulatedEntrypoint/Controllers/AchievementController.cs

@@ -0,0 +1,133 @@
+using Microsoft.AspNetCore.Mvc;
+using Microsoft.EntityFrameworkCore;
+using SVSim.Database;
+using SVSim.Database.Enums;
+using SVSim.Database.Models;
+using SVSim.Database.Repositories.Mission;
+using SVSim.Database.Services;
+using SVSim.EmulatedEntrypoint.Models.Dtos.Achievement;
+using SVSim.EmulatedEntrypoint.Services;
+
+namespace SVSim.EmulatedEntrypoint.Controllers;
+
+/// <summary>
+/// /achievement/* — claim achievement rewards. Wire shape mirrors AchievementReceiveRewardTask.cs.
+/// </summary>
+[Route("achievement")]
+public class AchievementController : SVSimController
+{
+    private const int FailureResultCode = 2;
+
+    private readonly SVSimDbContext _db;
+    private readonly IMissionCatalogRepository _catalog;
+    private readonly IViewerMissionStateService _state;
+    private readonly IMissionAssembler _assembler;
+    private readonly RewardGrantService _grantService;
+
+    public AchievementController(
+        SVSimDbContext db,
+        IMissionCatalogRepository catalog,
+        IViewerMissionStateService state,
+        IMissionAssembler assembler,
+        RewardGrantService grantService)
+    {
+        _db = db;
+        _catalog = catalog;
+        _state = state;
+        _assembler = assembler;
+        _grantService = grantService;
+    }
+
+    [HttpPost("receive_reward")]
+    public async Task<IActionResult> ReceiveReward(
+        AchievementReceiveRewardRequest request, CancellationToken ct)
+    {
+        if (!TryGetViewerId(out long viewerId)) return Unauthorized();
+
+        // Load viewer with all the collections RewardGrantService may need to mutate.
+        var viewer = await _db.Viewers
+            .Include(v => v.MissionData)
+            .Include(v => v.Currency)
+            .Include(v => v.Cards)
+            .Include(v => v.Items)
+            .Include(v => v.Sleeves)
+            .Include(v => v.Emblems)
+            .Include(v => v.Degrees)
+            .Include(v => v.LeaderSkins)
+            .Include(v => v.MyPageBackgrounds)
+            .AsSplitQuery()
+            .FirstAsync(v => v.Id == viewerId, ct);
+
+        await _state.EnsureCurrentAsync(viewer.Id, ct);
+        await _db.SaveChangesAsync(ct);
+
+        // Re-read viewer's achievement for this type after state-service materialization.
+        var ach = await _db.ViewerAchievements
+            .FirstOrDefaultAsync(a => a.ViewerId == viewerId && a.AchievementType == request.AchievementType, ct);
+        if (ach is null || ach.Level != request.Level)
+        {
+            return Ok(new { result_code = FailureResultCode });
+        }
+
+        var catalogRow = await _catalog.GetAchievementAsync(request.AchievementType, request.Level, ct);
+        if (catalogRow is null)
+        {
+            return Ok(new { result_code = FailureResultCode });
+        }
+
+        // Grant via the canonical RewardGrantService primitive.
+        var granted = await _grantService.ApplyAsync(
+            viewer,
+            (UserGoodsType)catalogRow.RewardType,
+            catalogRow.RewardDetailId,
+            catalogRow.RewardNumber,
+            ct);
+
+        // Advance viewer's level by 1. If no catalog row exists at the new level (i.e. just
+        // claimed the highest captured tier), max_level on the wire stays the same and the
+        // UI shows "claimed at max" until catalog grows.
+        ach.Level += 1;
+        var maxLevelByType = await _catalog.GetMaxLevelByAchievementTypeAsync(ct);
+        if (maxLevelByType.TryGetValue(request.AchievementType, out int maxLevel)
+            && ach.Level > maxLevel)
+        {
+            ach.AchievementStatus = 2;
+        }
+        else
+        {
+            ach.AchievementStatus = 0;
+        }
+        ach.NowAchievedLevel = request.Level;
+
+        await _db.SaveChangesAsync(ct);
+
+        var dto = await _assembler.BuildAsync(viewer, ct);
+        var resp = new AchievementReceiveRewardResponse
+        {
+            UserMissionList = dto.UserMissionList,
+            UserAchievementList = dto.UserAchievementList,
+            BattlePassMonthlyMission = dto.BattlePassMonthlyMission,
+            IsChangeMission = dto.IsChangeMission,
+            CanChangeMissionTime = dto.CanChangeMissionTime,
+            IsChangeReceiveType = dto.IsChangeReceiveType,
+            CanChangeReceiveTypeTime = dto.CanChangeReceiveTypeTime,
+            MissionReceiveType = dto.MissionReceiveType,
+            RewardList = granted.Select(g => new RewardGrantDto
+            {
+                RewardType = g.RewardType,
+                RewardId = g.RewardId,
+                RewardNum = g.RewardNum,
+            }).ToList(),
+            TotalReceiveCountList = granted.Select(g => new TotalReceiveCountDto
+            {
+                RewardType = g.RewardType,
+                RewardDetailId = g.RewardId,
+                RewardCount = g.RewardNum,
+                ItemType = 0,
+                IsUsable = true,
+            }).ToList(),
+        };
+
+        return Ok(resp);
+    }
+}

SVSim.EmulatedEntrypoint/Controllers/CheckController.cs

@@ -30,10 +30,6 @@ public class CheckController : SVSimController
         });
     }
 
-    // TODO: spec lists this as anonymous (identity from SHORT_UDID), but the base controller's
-    // [Authorize] still applies. For now requires a Steam-linked viewer; new-user bootstrap (where
-    // the server creates a viewer + returns rewrite_viewer_id) is deferred until the boot flow is
-    // exercised end-to-end with a real client.
     [HttpPost("game_start")]
     public async Task<GameStartResponse> GameStart(GameStartRequest request)
     {

SVSim.EmulatedEntrypoint/Controllers/ItemPurchaseController.cs

@@ -0,0 +1,216 @@
+using Microsoft.AspNetCore.Mvc;
+using Microsoft.EntityFrameworkCore;
+using SVSim.Database;
+using SVSim.Database.Enums;
+using SVSim.Database.Models;
+using SVSim.Database.Services;
+using SVSim.EmulatedEntrypoint.Models.Dtos;
+using SVSim.EmulatedEntrypoint.Models.Dtos.Requests;
+using SVSim.EmulatedEntrypoint.Models.Dtos.Requests.ItemPurchase;
+using SVSim.EmulatedEntrypoint.Models.Dtos.Responses.ItemPurchase;
+using SVSim.EmulatedEntrypoint.Services;
+
+namespace SVSim.EmulatedEntrypoint.Controllers;
+
+/// <summary>
+/// /item_purchase/* — the generic item shop where viewers spend item-or-currency to acquire
+/// other items (e.g. RedEther → Seer's Globe, Orb Shards → Seer's Globe). Per-viewer monthly
+/// or lifetime quota tracked via <see cref="ViewerEventCounter"/>.
+/// </summary>
+[Route("item_purchase")]
+public class ItemPurchaseController : SVSimController
+{
+    private readonly SVSimDbContext _db;
+    private readonly RewardGrantService _rewards;
+    private readonly TimeProvider _time;
+
+    public ItemPurchaseController(SVSimDbContext db, RewardGrantService rewards, TimeProvider time)
+    {
+        _db = db;
+        _rewards = rewards;
+        _time = time;
+    }
+
+    [HttpPost("info")]
+    public async Task<ActionResult<ItemPurchaseInfoResponse>> Info(BaseRequest _)
+    {
+        if (!TryGetViewerId(out long viewerId)) return Unauthorized();
+
+        var catalog = await _db.ItemPurchaseCatalog
+            .Where(c => c.IsEnabled)
+            .OrderBy(c => c.Id)
+            .ToListAsync();
+
+        var now = _time.GetUtcNow();
+        var monthKey = JstPeriod.MonthKey(now);
+        var keys = catalog.Select(c => CounterKey(c.Id)).ToList();
+        var counters = await _db.ViewerEventCounters
+            .Where(c => c.ViewerId == viewerId && keys.Contains(c.EventKey))
+            .ToListAsync();
+
+        var info = new List<ItemPurchaseEntryDto>(catalog.Count);
+        foreach (var c in catalog)
+        {
+            int count = CounterCount(counters, c, monthKey);
+            info.Add(new ItemPurchaseEntryDto
+            {
+                PurchaseId = c.Id,
+                RequireItemType = c.RequireItemType,
+                RequireItemId = c.RequireItemId,
+                RequireItemNum = c.RequireItemNum,
+                PurchaseItemType = c.PurchaseItemType,
+                PurchaseItemId = c.PurchaseItemId,
+                PurchaseItemNum = c.PurchaseItemNum,
+                PurchaseName = c.PurchaseName,
+                IsMonthlyReset = c.IsMonthlyReset ? 1 : 0,
+                Rest = Math.Max(0, c.PurchaseLimit - count),
+            });
+        }
+
+        // user_card_pack_ticket_list: every item with Type == 2 paired with the viewer's count
+        // (zero counts included — the client unconditionally calls UpdateItemNum per entry).
+        var ticketItems = await _db.Items
+            .Where(i => i.Type == 2)
+            .OrderByDescending(i => i.Id)
+            .ToListAsync();
+        var ownedByItemId = (await _db.Viewers
+            .Where(v => v.Id == viewerId)
+            .SelectMany(v => v.Items)
+            .Select(oi => new { oi.Item.Id, oi.Count })
+            .ToListAsync())
+            .ToDictionary(x => x.Id, x => x.Count);
+
+        var ticketList = ticketItems.Select(i => new UserCardPackTicketDto
+        {
+            ItemId = i.Id,
+            Number = ownedByItemId.TryGetValue(i.Id, out var cnt) ? cnt : 0,
+        }).ToList();
+
+        return new ItemPurchaseInfoResponse
+        {
+            ItemPurchaseInfo = info,
+            UserCardPackTicketList = ticketList,
+        };
+    }
+
+    [HttpPost("purchase")]
+    public async Task<ActionResult<ItemPurchasePurchaseResponse>> Purchase(ItemPurchasePurchaseRequest request)
+    {
+        if (!TryGetViewerId(out long viewerId)) return Unauthorized();
+
+        var entry = await _db.ItemPurchaseCatalog.FindAsync(request.PurchaseId);
+        if (entry is null || !entry.IsEnabled)
+            return BadRequest(new { error = "unknown_purchase" });
+
+        var now = _time.GetUtcNow();
+        var period = entry.IsMonthlyReset ? JstPeriod.MonthKey(now) : JstPeriod.AllTime;
+        var key = CounterKey(entry.Id);
+
+        var counter = await _db.ViewerEventCounters
+            .FirstOrDefaultAsync(c => c.ViewerId == viewerId && c.EventKey == key && c.Period == period);
+        int currentCount = counter?.Count ?? 0;
+        int rest = entry.PurchaseLimit - currentCount;
+        if (rest <= 0)
+            return BadRequest(new { error = "sold_out" });
+
+        var viewer = await LoadViewerGraphAsync(viewerId);
+        var rewardList = new List<RewardListEntry>();
+
+        // Debit the require side. RewardGrantService is grant-only, so handle this inline.
+        var debit = TryDebit(viewer, (UserGoodsType)entry.RequireItemType, entry.RequireItemId, entry.RequireItemNum);
+        if (debit.Error is not null) return BadRequest(new { error = debit.Error });
+        if (debit.PostState is not null) rewardList.Add(debit.PostState);
+
+        // Grant the purchase side through the central dispatcher.
+        var granted = await _rewards.ApplyAsync(viewer,
+            (UserGoodsType)entry.PurchaseItemType, entry.PurchaseItemId, entry.PurchaseItemNum);
+        foreach (var g in granted)
+        {
+            rewardList.Add(new RewardListEntry
+            {
+                RewardType = g.RewardType,
+                RewardId = g.RewardId,
+                RewardNum = g.RewardNum,
+            });
+        }
+
+        // Increment the per-period counter.
+        if (counter is null)
+        {
+            _db.ViewerEventCounters.Add(new ViewerEventCounter
+            {
+                ViewerId = viewerId,
+                EventKey = key,
+                Period = period,
+                Count = 1,
+            });
+        }
+        else
+        {
+            counter.Count++;
+        }
+
+        await _db.SaveChangesAsync();
+
+        return new ItemPurchasePurchaseResponse { RewardList = rewardList };
+    }
+
+    /// <summary>
+    /// Debit <paramref name="num"/> of (<paramref name="type"/>, <paramref name="detailId"/>)
+    /// from the viewer, returning a post-state-aware <see cref="RewardListEntry"/> the client
+    /// uses to refresh its cached count. Returns an error string on insufficient balance.
+    /// </summary>
+    private static (RewardListEntry? PostState, string? Error) TryDebit(
+        Viewer viewer, UserGoodsType type, long detailId, int num)
+    {
+        switch (type)
+        {
+            case UserGoodsType.RedEther:
+                if (viewer.Currency.RedEther < (ulong)num)
+                    return (null, "insufficient_red_ether");
+                viewer.Currency.RedEther -= (ulong)num;
+                return (new RewardListEntry { RewardType = 1, RewardId = 0, RewardNum = (int)viewer.Currency.RedEther }, null);
+
+            case UserGoodsType.Crystal:
+                if (viewer.Currency.Crystals < (ulong)num)
+                    return (null, "insufficient_crystals");
+                viewer.Currency.Crystals -= (ulong)num;
+                return (new RewardListEntry { RewardType = 2, RewardId = 0, RewardNum = (int)viewer.Currency.Crystals }, null);
+
+            case UserGoodsType.Rupy:
+                if (viewer.Currency.Rupees < (ulong)num)
+                    return (null, "insufficient_rupees");
+                viewer.Currency.Rupees -= (ulong)num;
+                return (new RewardListEntry { RewardType = 9, RewardId = 0, RewardNum = (int)viewer.Currency.Rupees }, null);
+
+            case UserGoodsType.Item:
+                var owned = viewer.Items.FirstOrDefault(i => i.Item.Id == (int)detailId);
+                if (owned is null || owned.Count < num)
+                    return (null, "insufficient_item");
+                owned.Count -= num;
+                return (new RewardListEntry { RewardType = 4, RewardId = detailId, RewardNum = owned.Count }, null);
+
+            default:
+                return (null, $"debit_type_not_supported:{type}");
+        }
+    }
+
+    private static string CounterKey(int purchaseId) => $"item_purchase:{purchaseId}";
+
+    private static int CounterCount(List<ViewerEventCounter> counters, ItemPurchaseCatalogEntry entry, string monthKey)
+    {
+        var period = entry.IsMonthlyReset ? monthKey : JstPeriod.AllTime;
+        return counters.FirstOrDefault(c => c.EventKey == CounterKey(entry.Id) && c.Period == period)?.Count ?? 0;
+    }
+
+    private Task<Viewer> LoadViewerGraphAsync(long viewerId) => _db.Viewers
+        .Include(v => v.Items).ThenInclude(i => i.Item)
+        .Include(v => v.Cards).ThenInclude(c => c.Card)
+        .Include(v => v.Sleeves)
+        .Include(v => v.Emblems)
+        .Include(v => v.LeaderSkins)
+        .Include(v => v.Degrees)
+        .Include(v => v.MyPageBackgrounds)
+        .AsSplitQuery()
+        .FirstAsync(v => v.Id == viewerId);
+}

SVSim.EmulatedEntrypoint/Controllers/LeaderSkinController.cs

@@ -1,24 +1,41 @@
 using Microsoft.AspNetCore.Mvc;
 using Microsoft.EntityFrameworkCore;
 using SVSim.Database;
+using SVSim.Database.Enums;
+using SVSim.Database.Models;
+using SVSim.Database.Services;
+using SVSim.EmulatedEntrypoint.Models.Dtos;
+using SVSim.EmulatedEntrypoint.Models.Dtos.Requests;
 using SVSim.EmulatedEntrypoint.Models.Dtos.Requests.LeaderSkin;
 using SVSim.EmulatedEntrypoint.Models.Dtos.Responses.LeaderSkin;
 
 namespace SVSim.EmulatedEntrypoint.Controllers;
 
 /// <summary>
-/// /leader_skin/* — per-class "active leader skin" preference. The per-CLASS setting is the
+/// /leader_skin/* — the leader-skin shop family.
-/// fallback used when a deck has <c>leader_skin_id == 0</c>; per-deck overrides go through
+/// <list type="bullet">
-/// /deck/update_leader_skin instead.
+///   <item><c>/set</c>: per-class equipped-skin preference (the fallback when a deck has
+///   <c>leader_skin_id == 0</c>). Per-deck overrides go through /deck/update_leader_skin.</item>
+///   <item><c>/products</c>: shop catalog (dict-keyed by series_id).</item>
+///   <item><c>/buy</c>: single-skin purchase. Currency dispatch crystal/rupy/ticket(501).</item>
+///   <item><c>/buy_set</c>: whole-series purchase at set discount.</item>
+///   <item><c>/buy_set_item</c>: claim series-completion bonus (idempotent via
+///   <see cref="ViewerLeaderSkinSetClaim"/>).</item>
+///   <item><c>/ids</c>: flat list of owned skin ids for badge refresh.</item>
+/// </list>
 /// </summary>
 [Route("leader_skin")]
 public class LeaderSkinController : SVSimController
 {
     private readonly SVSimDbContext _db;
+    private readonly RewardGrantService _rewards;
+    private readonly TimeProvider _time;
 
-    public LeaderSkinController(SVSimDbContext db)
+    public LeaderSkinController(SVSimDbContext db, RewardGrantService rewards, TimeProvider time)
     {
         _db = db;
+        _rewards = rewards;
+        _time = time;
     }
 
     [HttpPost("set")]
@@ -28,8 +45,6 @@ public class LeaderSkinController : SVSimController
 
         if (request.IsRandomLeaderSkin)
         {
-            // Random-skin mode needs a per-viewer per-class shuffle pool, which we don't
-            // persist yet (ViewerClassData has no list field for it). Punt for now.
             return StatusCode(StatusCodes.Status501NotImplemented,
                 new { error = "random_leader_skin_not_implemented" });
         }
@@ -44,7 +59,6 @@ public class LeaderSkinController : SVSimController
         var classData = viewer.Classes.FirstOrDefault(c => c.Class.Id == request.ClassId);
         if (classData is null) return BadRequest(new { error = "unknown_class" });
 
-        // Skin must (a) exist in the catalog, (b) match the target class, (c) be owned by the viewer.
         var skin = await _db.LeaderSkins.FindAsync(request.LeaderSkinId);
         if (skin is null) return BadRequest(new { error = "unknown_skin" });
         if (skin.ClassId != request.ClassId) return BadRequest(new { error = "skin_class_mismatch" });
@@ -61,4 +75,345 @@ public class LeaderSkinController : SVSimController
             LeaderSkinIdList = new(),
         };
     }
+
+    [HttpPost("ids")]
+    public async Task<ActionResult<LeaderSkinIdsResponse>> Ids(BaseRequest _)
+    {
+        if (!TryGetViewerId(out long viewerId)) return Unauthorized();
+
+        var ids = await _db.Viewers
+            .Where(v => v.Id == viewerId)
+            .SelectMany(v => v.LeaderSkins.Select(s => s.Id))
+            .OrderBy(id => id)
+            .ToListAsync();
+
+        return new LeaderSkinIdsResponse { UserLeaderSkinIds = ids };
+    }
+
+    [HttpPost("products")]
+    public async Task<ActionResult<Dictionary<string, SkinSeriesDto>>> Products(BaseRequest _)
+    {
+        if (!TryGetViewerId(out long viewerId)) return Unauthorized();
+
+        var ownedSkinIds = (await _db.Viewers
+            .Where(v => v.Id == viewerId)
+            .SelectMany(v => v.LeaderSkins.Select(s => s.Id))
+            .ToListAsync()).ToHashSet();
+
+        var claimedSeries = (await _db.ViewerLeaderSkinSetClaims
+            .Where(c => c.ViewerId == viewerId)
+            .Select(c => c.SeriesId)
+            .ToListAsync()).ToHashSet();
+
+        var series = await _db.LeaderSkinShopSeries
+            .Where(s => s.IsEnabled)
+            .Include(s => s.SetCompletionRewards)
+            .Include(s => s.Products.Where(p => p.IsEnabled)).ThenInclude(p => p.Rewards)
+            .OrderBy(s => s.Id)
+            .ToListAsync();
+
+        var result = new Dictionary<string, SkinSeriesDto>();
+        foreach (var s in series)
+        {
+            var products = s.Products.OrderBy(p => p.Id).Select(p => ToProductDto(p, ownedSkinIds)).ToList();
+            bool seriesCompleted = products.Count > 0 && products.All(p => p.IsPurchased);
+            int rewardStatus = ComputeRewardStatus(s, seriesCompleted, claimedSeries.Contains(s.Id));
+
+            result[s.Id.ToString()] = new SkinSeriesDto
+            {
+                SeriesId = s.Id,
+                IsCompleted = seriesCompleted,
+                IsNew = s.IsNew,
+                SetSalesStatus = s.SetSalesStatus,
+                Rewards = new SkinSeriesRewardsDto
+                {
+                    Status = rewardStatus,
+                    Items = s.SetCompletionRewards.OrderBy(r => r.OrderIndex).Select(r => new SkinSeriesRewardItemDto
+                    {
+                        RewardType = r.RewardType,
+                        RewardDetailId = r.RewardDetailId,
+                        RewardNumber = r.RewardNumber,
+                    }).ToList(),
+                },
+                SetPrices = new SkinSeriesSetPricesDto
+                {
+                    SetPriceCrystal = s.SetPriceCrystal,
+                    SetPriceRupy = s.SetPriceRupy,
+                    SetPriceTicket = s.SetPriceTicket,
+                    TicketId = s.SetPriceTicketId,
+                },
+                Products = products,
+            };
+        }
+
+        return result;
+    }
+
+    [HttpPost("buy")]
+    public async Task<ActionResult<LeaderSkinBuyResponse>> Buy(LeaderSkinBuyRequest request)
+    {
+        if (!TryGetViewerId(out long viewerId)) return Unauthorized();
+
+        if (request.SalesType is 3)
+            return StatusCode(StatusCodes.Status501NotImplemented,
+                new { error = "ticket_currency_path_not_implemented" });
+        if (request.SalesType is < 0 or > 3)
+            return BadRequest(new { error = "invalid_sales_type" });
+
+        var product = await _db.LeaderSkinShopProducts
+            .Include(p => p.Rewards)
+            .Include(p => p.Series)
+            .FirstOrDefaultAsync(p => p.Id == request.ProductId);
+        if (product is null) return NotFound(new { error = "unknown_product" });
+        if (!product.IsEnabled || product.Series is not { IsEnabled: true })
+            return BadRequest(new { error = "product_not_available" });
+
+        var viewer = await LoadViewerGraphAsync(viewerId);
+
+        // Already-purchased = viewer owns the leader_skin this product grants.
+        if (viewer.LeaderSkins.Any(s => s.Id == product.LeaderSkinId))
+            return BadRequest(new { error = "already_purchased" });
+
+        var rewardList = new List<RewardListEntry>();
+        var debit = DebitProductPrice(viewer, product, request.SalesType);
+        if (debit.Error is not null) return BadRequest(new { error = debit.Error });
+        if (debit.PostState is not null) rewardList.Add(debit.PostState);
+
+        await ApplyRewardsAsync(viewer, product.Rewards, rewardList);
+
+        await _db.SaveChangesAsync();
+        return new LeaderSkinBuyResponse { RewardList = rewardList };
+    }
+
+    [HttpPost("buy_set")]
+    public async Task<ActionResult<LeaderSkinBuyResponse>> BuySet(LeaderSkinBuySetRequest request)
+    {
+        if (!TryGetViewerId(out long viewerId)) return Unauthorized();
+
+        if (request.SalesType is 3)
+            return StatusCode(StatusCodes.Status501NotImplemented,
+                new { error = "ticket_currency_path_not_implemented" });
+        if (request.SalesType is < 0 or > 3)
+            return BadRequest(new { error = "invalid_sales_type" });
+
+        var series = await _db.LeaderSkinShopSeries
+            .Include(s => s.Products.Where(p => p.IsEnabled)).ThenInclude(p => p.Rewards)
+            .FirstOrDefaultAsync(s => s.Id == request.SeriesId);
+        if (series is null) return NotFound(new { error = "unknown_series" });
+        if (!series.IsEnabled || series.SetSalesStatus == 0)
+            return BadRequest(new { error = "set_sale_not_active" });
+
+        var viewer = await LoadViewerGraphAsync(viewerId);
+
+        var rewardList = new List<RewardListEntry>();
+        var debit = DebitSetPrice(viewer, series, request.SalesType);
+        if (debit.Error is not null) return BadRequest(new { error = debit.Error });
+        if (debit.PostState is not null) rewardList.Add(debit.PostState);
+
+        // Grant every product's rewards; RewardGrantService is idempotent on already-owned
+        // cosmetics, so partial-set buyers don't double-add.
+        foreach (var p in series.Products.OrderBy(p => p.Id))
+        {
+            await ApplyRewardsAsync(viewer, p.Rewards, rewardList);
+        }
+
+        await _db.SaveChangesAsync();
+        return new LeaderSkinBuyResponse { RewardList = rewardList };
+    }
+
+    [HttpPost("buy_set_item")]
+    public async Task<ActionResult<LeaderSkinBuyResponse>> BuySetItem(LeaderSkinBuySetItemRequest request)
+    {
+        if (!TryGetViewerId(out long viewerId)) return Unauthorized();
+
+        var series = await _db.LeaderSkinShopSeries
+            .Include(s => s.SetCompletionRewards)
+            .Include(s => s.Products.Where(p => p.IsEnabled))
+            .FirstOrDefaultAsync(s => s.Id == request.SeriesId);
+        if (series is null) return NotFound(new { error = "unknown_series" });
+
+        // Check claim hasn't been made already (idempotent — returns empty reward_list rather
+        // than 400 so the client doesn't error if it retries).
+        var existingClaim = await _db.ViewerLeaderSkinSetClaims
+            .FirstOrDefaultAsync(c => c.ViewerId == viewerId && c.SeriesId == series.Id);
+        if (existingClaim is not null)
+            return new LeaderSkinBuyResponse { RewardList = new() };
+
+        var viewer = await LoadViewerGraphAsync(viewerId);
+
+        // Must own every skin in the series to claim the bonus.
+        var ownedSkinIds = viewer.LeaderSkins.Select(s => s.Id).ToHashSet();
+        bool ownsAll = series.Products.Count > 0 && series.Products.All(p => ownedSkinIds.Contains(p.LeaderSkinId));
+        if (!ownsAll)
+            return BadRequest(new { error = "series_not_completed" });
+
+        var rewardList = new List<RewardListEntry>();
+        await ApplyRewardsAsync(viewer, series.SetCompletionRewards, rewardList);
+
+        _db.ViewerLeaderSkinSetClaims.Add(new ViewerLeaderSkinSetClaim
+        {
+            ViewerId = viewerId,
+            SeriesId = series.Id,
+            ClaimedAt = _time.GetUtcNow().UtcDateTime,
+        });
+
+        await _db.SaveChangesAsync();
+        return new LeaderSkinBuyResponse { RewardList = rewardList };
+    }
+
+    /// <summary>
+    /// Computes the per-viewer <c>rewards.status</c> for a series:
+    ///   0=none — set_sales_status==0 OR no bonus items configured (matches prod, which ships
+    ///   status=0 for series where items[] is empty even when set_sales_status==1)
+    ///   1=not_got — bonus exists, series completed by viewer, bonus unclaimed
+    ///   2=got — viewer claimed the bonus
+    ///   1 (effectively "available later") when set sale active with bonus and viewer hasn't
+    ///   completed the series.
+    /// The 1/2 distinction matches the client enum (RewardStatus.not_got vs .got).
+    /// <para>
+    /// Important: emitting status=1 when items[] is empty triggers the client's
+    /// <c>is_completed &amp;&amp; not_got</c> branch in SkinPurchaseInfoTask.CreateSetSaleInfo,
+    /// which marks the set sale as FREE and renders a useless "claim" button for a
+    /// nonexistent bonus. Always return 0 when there's nothing to claim.
+    /// </para>
+    /// </summary>
+    private static int ComputeRewardStatus(LeaderSkinShopSeriesEntry series, bool seriesCompleted, bool claimed)
+    {
+        if (series.SetSalesStatus == 0) return 0;
+        if (series.SetCompletionRewards.Count == 0) return 0;
+        if (claimed) return 2;
+        if (seriesCompleted) return 1;
+        return 1;
+    }
+
+    private static SkinProductDto ToProductDto(LeaderSkinShopProductEntry p, HashSet<int> ownedSkinIds)
+    {
+        bool isPurchased = ownedSkinIds.Contains(p.LeaderSkinId);
+        return new SkinProductDto
+        {
+            ProductId = p.Id,
+            LeaderSkinId = p.LeaderSkinId,
+            ProductName = p.ProductNameKey,
+            Introduction = p.IntroductionKey,
+            CvName = p.CvNameKey,
+            IsPurchased = isPurchased,
+            Sale = new SkinProductSaleDto
+            {
+                SinglePriceCrystal = p.SinglePriceCrystal,
+                SinglePriceRupy = p.SinglePriceRupy,
+                SinglePriceTicket = p.SinglePriceTicket,
+                TicketNumber = p.TicketNumber,
+                ItemId = p.TicketItemId,
+            },
+            Rewards = p.Rewards.OrderBy(r => r.OrderIndex).Select(r => new SkinProductRewardDto
+            {
+                RewardType = r.RewardType,
+                RewardDetailId = r.RewardDetailId,
+                RewardNumber = r.RewardNumber,
+                IsOwned = IsRewardOwned(r, ownedSkinIds),
+            }).ToList(),
+        };
+    }
+
+    /// <summary>
+    /// A bundled reward shows as "owned" when the viewer already has the cosmetic. For now we
+    /// only flag the Skin reward (type==10) against the viewer's skin collection — the cascaded
+    /// emblem/sleeve typically come with the skin, so the heuristic is "skin owned → all three
+    /// bundle items are de-facto owned." Refine later if a capture shows independent state.
+    /// </summary>
+    private static bool IsRewardOwned(LeaderSkinShopProductRewardEntry r, HashSet<int> ownedSkinIds)
+    {
+        // Skin reward: direct check.
+        if (r.RewardType == (int)UserGoodsType.Skin)
+            return ownedSkinIds.Contains((int)r.RewardDetailId);
+        // Other types: we don't have the full cosmetic-owned graph in scope here. The product's
+        // sibling Skin reward tells us whether the bundle was purchased; piggy-back on that by
+        // letting the caller pre-compute IsPurchased. Conservative default: not owned.
+        return false;
+    }
+
+    private (RewardListEntry? PostState, string? Error) DebitProductPrice(
+        Viewer viewer, LeaderSkinShopProductEntry product, int salesType)
+    {
+        return salesType switch
+        {
+            0 when product.SinglePriceCrystal == 0 && product.SinglePriceRupy == 0 => (null, null),
+            0 => (null, "price_not_available_for_currency"),
+            1 => product.SinglePriceCrystal is null
+                ? (null, "price_not_available_for_currency")
+                : DebitCrystal(viewer, product.SinglePriceCrystal.Value),
+            2 => product.SinglePriceRupy is null
+                ? (null, "price_not_available_for_currency")
+                : DebitRupy(viewer, product.SinglePriceRupy.Value),
+            _ => (null, "invalid_sales_type"),
+        };
+    }
+
+    private (RewardListEntry? PostState, string? Error) DebitSetPrice(
+        Viewer viewer, LeaderSkinShopSeriesEntry series, int salesType)
+    {
+        return salesType switch
+        {
+            0 when series.SetPriceCrystal == 0 && series.SetPriceRupy == 0 => (null, null),
+            0 => (null, "price_not_available_for_currency"),
+            1 => series.SetPriceCrystal is null
+                ? (null, "price_not_available_for_currency")
+                : DebitCrystal(viewer, series.SetPriceCrystal.Value),
+            2 => series.SetPriceRupy is null
+                ? (null, "price_not_available_for_currency")
+                : DebitRupy(viewer, series.SetPriceRupy.Value),
+            _ => (null, "invalid_sales_type"),
+        };
+    }
+
+    private static (RewardListEntry?, string?) DebitCrystal(Viewer viewer, int amount)
+    {
+        if (viewer.Currency.Crystals < (ulong)amount) return (null, "insufficient_crystals");
+        viewer.Currency.Crystals -= (ulong)amount;
+        return (new RewardListEntry { RewardType = 2, RewardId = 0, RewardNum = (int)viewer.Currency.Crystals }, null);
+    }
+
+    private static (RewardListEntry?, string?) DebitRupy(Viewer viewer, int amount)
+    {
+        if (viewer.Currency.Rupees < (ulong)amount) return (null, "insufficient_rupees");
+        viewer.Currency.Rupees -= (ulong)amount;
+        return (new RewardListEntry { RewardType = 9, RewardId = 0, RewardNum = (int)viewer.Currency.Rupees }, null);
+    }
+
+    private async Task ApplyRewardsAsync<T>(
+        Viewer viewer, IEnumerable<T> rewards, List<RewardListEntry> rewardList) where T : notnull
+    {
+        foreach (var r in rewards)
+        {
+            var (type, detailId, number) = ExtractTuple(r);
+            var granted = await _rewards.ApplyAsync(viewer, (UserGoodsType)type, detailId, number);
+            foreach (var g in granted)
+            {
+                rewardList.Add(new RewardListEntry
+                {
+                    RewardType = g.RewardType,
+                    RewardId = g.RewardId,
+                    RewardNum = g.RewardNum,
+                });
+            }
+        }
+    }
+
+    private static (int Type, long Id, int Num) ExtractTuple(object reward) => reward switch
+    {
+        LeaderSkinShopProductRewardEntry p => (p.RewardType, p.RewardDetailId, p.RewardNumber),
+        LeaderSkinShopSeriesRewardEntry s => (s.RewardType, s.RewardDetailId, s.RewardNumber),
+        _ => throw new InvalidOperationException($"unexpected reward type {reward.GetType().Name}"),
+    };
+
+    private Task<Viewer> LoadViewerGraphAsync(long viewerId) => _db.Viewers
+        .Include(v => v.LeaderSkins)
+        .Include(v => v.Sleeves)
+        .Include(v => v.Emblems)
+        .Include(v => v.Degrees)
+        .Include(v => v.MyPageBackgrounds)
+        .Include(v => v.Items).ThenInclude(i => i.Item)
+        .Include(v => v.Cards).ThenInclude(c => c.Card)
+        .AsSplitQuery()
+        .FirstAsync(v => v.Id == viewerId);
 }

SVSim.EmulatedEntrypoint/Controllers/LoadController.cs

@@ -1,5 +1,6 @@
 using System.Text.Json;
 using Microsoft.AspNetCore.Mvc;
+using SVSim.Database;
 using SVSim.Database.Enums;
 using SVSim.Database.Models;
 using SVSim.Database.Models.Config;
@@ -47,11 +48,14 @@ public class LoadController : SVSimController
     private readonly ICardAcquisitionService _acquisition;
     private readonly IGameConfigService _config;
     private readonly IBattlePassService _battlePass;
+    private readonly IViewerMissionStateService _missionState;
+    private readonly SVSimDbContext _db;
 
     public LoadController(IViewerRepository viewerRepository, ICardRepository cardRepository,
         ICollectionRepository collectionRepository, IGlobalsRepository globalsRepository,
         ICardAcquisitionService acquisition, IGameConfigService config,
-        IBattlePassService battlePass)
+        IBattlePassService battlePass, IViewerMissionStateService missionState,
+        SVSimDbContext db)
     {
         _viewerRepository = viewerRepository;
         _cardRepository = cardRepository;
@@ -60,6 +64,8 @@ public class LoadController : SVSimController
         _acquisition = acquisition;
         _config = config;
         _battlePass = battlePass;
+        _missionState = missionState;
+        _db = db;
     }
 
     [HttpPost("index")]
@@ -83,6 +89,11 @@ public class LoadController : SVSimController
         // (on a separate tracked instance) won't appear on this snapshot. Without the re-fetch,
         // the response payload would be one /load/index behind on newly-granted cosmetics.
         await _acquisition.BackfillCosmeticsAsync(viewer.Id);
+
+        // Lazy-materialize mission/achievement state. Idempotent — safe to call every /load/index.
+        await _missionState.EnsureCurrentAsync(viewer.Id);
+        await _db.SaveChangesAsync();
+
         viewer = await _viewerRepository.GetViewerByShortUdid(shortUdid);
         if (viewer is null)
         {
@@ -170,6 +181,7 @@ public class LoadController : SVSimController
             UserInfo = new UserInfo(deviceType, viewer),
             UserCurrency = new UserCurrency(viewer),
             UserItems = viewer.Items.Select(item => new UserItem(item)).ToList(),
+            SpotPoint = checked((int)viewer.Currency.SpotPoints),
             UserRotationDecks = new UserFormatDeckInfo
             {
                 UserDecks = viewer.Decks.Where(d => d.Format == Format.Rotation)

SVSim.EmulatedEntrypoint/Controllers/MissionController.cs

@@ -0,0 +1,124 @@
+using Microsoft.AspNetCore.Mvc;
+using Microsoft.EntityFrameworkCore;
+using SVSim.Database;
+using SVSim.Database.Models;
+using SVSim.Database.Repositories.Mission;
+using SVSim.EmulatedEntrypoint.Models.Dtos.Common.Mission;
+using SVSim.EmulatedEntrypoint.Models.Dtos.Mission;
+using SVSim.EmulatedEntrypoint.Models.Dtos.Requests;
+using SVSim.EmulatedEntrypoint.Services;
+
+namespace SVSim.EmulatedEntrypoint.Controllers;
+
+/// <summary>
+/// /mission/* — daily/weekly mission slots + achievement claim flow. Wire shapes mirror
+/// MissionInfoDetail.cs + Wizard/Mission*Task.cs.
+/// </summary>
+[Route("mission")]
+public class MissionController : SVSimController
+{
+    private const int RetireCooldownSeconds = 75600; // 21h per capture
+    private const int FailureResultCode = 2;
+
+    private readonly SVSimDbContext _db;
+    private readonly IViewerMissionStateService _state;
+    private readonly IMissionAssembler _assembler;
+    private readonly IMissionCatalogRepository _catalog;
+    private readonly IViewerMissionRepository _viewerRepo;
+    private readonly TimeProvider _time;
+
+    public MissionController(
+        SVSimDbContext db,
+        IViewerMissionStateService state,
+        IMissionAssembler assembler,
+        IMissionCatalogRepository catalog,
+        IViewerMissionRepository viewerRepo,
+        TimeProvider time)
+    {
+        _db = db;
+        _state = state;
+        _assembler = assembler;
+        _catalog = catalog;
+        _viewerRepo = viewerRepo;
+        _time = time;
+    }
+
+    [HttpPost("info")]
+    public async Task<IActionResult> Info(BaseRequest request, CancellationToken ct)
+    {
+        if (!TryGetViewerId(out long viewerId)) return Unauthorized();
+        var viewer = await LoadViewer(viewerId, ct);
+
+        await _state.EnsureCurrentAsync(viewer.Id, ct);
+        await _db.SaveChangesAsync(ct);
+
+        var dto = await _assembler.BuildAsync(viewer, ct);
+        return Ok(dto);
+    }
+
+    [HttpPost("retire")]
+    public async Task<IActionResult> Retire(MissionRetireRequest request, CancellationToken ct)
+    {
+        if (!TryGetViewerId(out long viewerId)) return Unauthorized();
+        var viewer = await LoadViewer(viewerId, ct);
+
+        var missions = await _viewerRepo.GetMissionsAsync(viewerId, ct);
+        var target = missions.FirstOrDefault(m => m.Id == request.Id);
+        if (target is null)
+        {
+            return Ok(new { result_code = FailureResultCode });
+        }
+
+        var catalogRow = await _catalog.GetByIdAsync(target.MissionCatalogId, ct);
+        if (catalogRow is null || catalogRow.LotType != 2)
+        {
+            return Ok(new { result_code = FailureResultCode });
+        }
+
+        var pool = await _catalog.GetByLotTypeAsync(2, ct);
+        var assignedIds = missions
+            .Where(m => m.Slot != target.Slot)
+            .Select(m => m.MissionCatalogId).ToHashSet();
+        var candidates = pool.Where(p => p.Id != target.MissionCatalogId && !assignedIds.Contains(p.Id)).ToList();
+        if (candidates.Count == 0)
+        {
+            return Ok(new { result_code = FailureResultCode });
+        }
+        var pick = candidates[Random.Shared.Next(candidates.Count)];
+
+        var now = _time.GetUtcNow();
+        _viewerRepo.RemoveMission(target);
+        _viewerRepo.AddMission(new ViewerMission
+        {
+            ViewerId = viewerId,
+            MissionCatalogId = pick.Id,
+            Slot = target.Slot,
+            AssignedAt = now.ToUnixTimeSeconds(),
+            MissionStatus = 1,
+        });
+        viewer.MissionData.MissionChangeTime = now.AddSeconds(RetireCooldownSeconds).UtcDateTime;
+        await _db.SaveChangesAsync(ct);
+
+        var dto = await _assembler.BuildAsync(viewer, ct);
+        return Ok(dto);
+    }
+
+    [HttpPost("change_receive_setting")]
+    public async Task<IActionResult> ChangeReceiveSetting(MissionChangeReceiveSettingRequest request, CancellationToken ct)
+    {
+        if (!TryGetViewerId(out long viewerId)) return Unauthorized();
+        var viewer = await LoadViewer(viewerId, ct);
+
+        viewer.MissionData.MissionReceiveType = request.MissionReceiveType;
+        await _db.SaveChangesAsync(ct);
+
+        var dto = await _assembler.BuildAsync(viewer, ct);
+        return Ok(dto);
+    }
+
+    private Task<Viewer> LoadViewer(long viewerId, CancellationToken ct) =>
+        _db.Viewers
+            .Include(v => v.MissionData)
+            .AsSplitQuery()
+            .FirstAsync(v => v.Id == viewerId, ct);
+}

SVSim.EmulatedEntrypoint/Controllers/PracticeController.cs

@@ -7,6 +7,7 @@ using SVSim.EmulatedEntrypoint.Models.Dtos.Requests;
 using SVSim.EmulatedEntrypoint.Models.Dtos.Requests.Common;
 using SVSim.EmulatedEntrypoint.Models.Dtos.Requests.Practice;
 using SVSim.EmulatedEntrypoint.Models.Dtos.Responses.Practice;
+using SVSim.EmulatedEntrypoint.Services;
 
 namespace SVSim.EmulatedEntrypoint.Controllers;
 
@@ -14,11 +15,16 @@ public class PracticeController : SVSimController
 {
     private readonly IDeckRepository _deckRepository;
     private readonly IGlobalsRepository _globalsRepository;
+    private readonly IMissionProgressService _missionProgress;
 
-    public PracticeController(IDeckRepository deckRepository, IGlobalsRepository globalsRepository)
+    public PracticeController(
+        IDeckRepository deckRepository,
+        IGlobalsRepository globalsRepository,
+        IMissionProgressService missionProgress)
     {
         _deckRepository = deckRepository;
         _globalsRepository = globalsRepository;
+        _missionProgress = missionProgress;
     }
 
     /// <summary>
@@ -83,15 +89,29 @@ public class PracticeController : SVSimController
     /// XP / no rewards. Class XP bookkeeping is deferred until a per-class XP store exists.
     /// </summary>
     [HttpPost("finish")]
-    public Task<PracticeFinishResponse> Finish(PracticeFinishRequest request)
+    public async Task<PracticeFinishResponse> Finish(PracticeFinishRequest request)
     {
-        return Task.FromResult(new PracticeFinishResponse
+        // Mission/achievement progress hook. Catalog rows for practice_win achievements use
+        // opponent NAMES (e.g. "practice_win:elite:arisa") — we only have numeric class_id /
+        // difficulty here, so we emit numeric forms. Bridging numeric→name to match captured
+        // catalog rows is a follow-up; the infrastructure is in place.
+        if (request.IsWin == 1 && TryGetViewerId(out long viewerId))
+        {
+            await _missionProgress.RecordEventAsync(viewerId, new[]
+            {
+                "practice_win",
+                $"practice_win:{request.Difficulty}",
+                $"practice_win:{request.Difficulty}:{request.EnemyClassId}",
+            });
+        }
+
+        return new PracticeFinishResponse
         {
             GetClassExperience = 0,
             ClassExperience = 0,
             ClassLevel = 1,
             AchievedInfo = new Dictionary<string, object>(),
             RewardList = new List<Models.Dtos.Common.Reward>()
-        });
+        };
     }
 }

SVSim.EmulatedEntrypoint/Controllers/SleeveController.cs

@@ -0,0 +1,190 @@
+using Microsoft.AspNetCore.Mvc;
+using Microsoft.EntityFrameworkCore;
+using SVSim.Database;
+using SVSim.Database.Enums;
+using SVSim.Database.Models;
+using SVSim.Database.Services;
+using SVSim.EmulatedEntrypoint.Models.Dtos;
+using SVSim.EmulatedEntrypoint.Models.Dtos.Requests;
+using SVSim.EmulatedEntrypoint.Models.Dtos.Requests.Sleeve;
+using SVSim.EmulatedEntrypoint.Models.Dtos.Responses.Sleeve;
+
+namespace SVSim.EmulatedEntrypoint.Controllers;
+
+/// <summary>
+/// /sleeve/* — the sleeve shop. Catalog + single-product purchase. No series-completion bonus
+/// (sleeves are sold individually; the leader-skin shop is the family with set-buys).
+/// </summary>
+[Route("sleeve")]
+public class SleeveController : SVSimController
+{
+    private readonly SVSimDbContext _db;
+    private readonly RewardGrantService _rewards;
+
+    public SleeveController(SVSimDbContext db, RewardGrantService rewards)
+    {
+        _db = db;
+        _rewards = rewards;
+    }
+
+    [HttpPost("info")]
+    public async Task<ActionResult<SleeveInfoResponse>> Info(BaseRequest _)
+    {
+        if (!TryGetViewerId(out long viewerId)) return Unauthorized();
+
+        // is_purchased_product is "viewer owns at least one sleeve granted by this product".
+        // Loading the viewer's sleeve-id set once and checking each product against it avoids
+        // an N+1 over products.
+        var ownedSleeveIds = (await _db.Viewers
+            .Where(v => v.Id == viewerId)
+            .SelectMany(v => v.Sleeves.Select(s => (long)s.Id))
+            .ToListAsync()).ToHashSet();
+
+        var series = await _db.SleeveShopSeries
+            .Where(s => s.IsEnabled)
+            .Include(s => s.Products.Where(p => p.IsEnabled)).ThenInclude(p => p.Rewards)
+            .OrderBy(s => s.Id)
+            .ToListAsync();
+
+        var sleeveList = new Dictionary<string, SleeveSeriesDto>();
+        foreach (var s in series)
+        {
+            var products = new Dictionary<string, SleeveProductDto>();
+            foreach (var p in s.Products.OrderBy(p => p.Id))
+            {
+                products[p.Id.ToString()] = new SleeveProductDto
+                {
+                    ProductId = p.Id,
+                    Name = p.NameKey,
+                    PriceCrystal = p.PriceCrystal,
+                    PriceRupy = p.PriceRupy,
+                    IsPurchasedProduct = IsProductPurchased(p, ownedSleeveIds),
+                    Rewards = p.Rewards.OrderBy(r => r.OrderIndex).Select(r => new SleeveProductRewardDto
+                    {
+                        RewardType = r.RewardType,
+                        RewardDetailId = r.RewardDetailId,
+                        RewardNumber = r.RewardNumber,
+                    }).ToList(),
+                };
+            }
+
+            sleeveList[s.Id.ToString()] = new SleeveSeriesDto
+            {
+                SeriesId = s.Id,
+                IsNew = s.IsNew,
+                ProductInfo = products,
+            };
+        }
+
+        return new SleeveInfoResponse { SleeveList = sleeveList };
+    }
+
+    [HttpPost("buy")]
+    public async Task<ActionResult<SleeveBuyResponse>> Buy(SleeveBuyRequest request)
+    {
+        if (!TryGetViewerId(out long viewerId)) return Unauthorized();
+
+        if (request.SalesType is 3)
+            return StatusCode(StatusCodes.Status501NotImplemented,
+                new { error = "ticket_currency_path_not_implemented" });
+        if (request.SalesType is < 0 or > 3)
+            return BadRequest(new { error = "invalid_sales_type" });
+
+        var product = await _db.SleeveShopProducts
+            .Include(p => p.Rewards)
+            .Include(p => p.Series)
+            .FirstOrDefaultAsync(p => p.Id == request.ProductId);
+        if (product is null) return NotFound(new { error = "unknown_product" });
+
+        if (!product.IsEnabled || product.Series is not { IsEnabled: true })
+            return BadRequest(new { error = "product_not_available" });
+
+        // Defence-in-depth: client also sends series_id; reject mismatches so a misencoded
+        // request can't accidentally bypass per-series state we'll later add (e.g. series-new flag).
+        if (product.SeriesId != request.SeriesId)
+            return BadRequest(new { error = "series_product_mismatch" });
+
+        var viewer = await LoadViewerGraphAsync(viewerId);
+
+        if (IsProductPurchased(product, viewer.Sleeves.Select(s => (long)s.Id).ToHashSet()))
+            return BadRequest(new { error = "already_purchased" });
+
+        // Pricing: capture-confirmed shape is single-price-per-currency (no intro/regular tiers
+        // like BuildDeck). At least one of crystal/rupy must match the chosen sales_type;
+        // sales_type==0 means "free", which requires both prices == 0.
+        var rewardList = new List<RewardListEntry>();
+        switch (request.SalesType)
+        {
+            case 0: // free
+                if (!(product.PriceCrystal == 0 && product.PriceRupy == 0))
+                    return BadRequest(new { error = "price_not_available_for_currency" });
+                break;
+            case 1: // crystal
+                if (product.PriceCrystal is null)
+                    return BadRequest(new { error = "price_not_available_for_currency" });
+                var crystalCost = (ulong)product.PriceCrystal.Value;
+                if (viewer.Currency.Crystals < crystalCost)
+                    return BadRequest(new { error = "insufficient_crystals" });
+                viewer.Currency.Crystals -= crystalCost;
+                rewardList.Add(new RewardListEntry { RewardType = 2, RewardId = 0, RewardNum = (int)viewer.Currency.Crystals });
+                break;
+            case 2: // rupy
+                if (product.PriceRupy is null)
+                    return BadRequest(new { error = "price_not_available_for_currency" });
+                var rupyCost = (ulong)product.PriceRupy.Value;
+                if (viewer.Currency.Rupees < rupyCost)
+                    return BadRequest(new { error = "insufficient_rupees" });
+                viewer.Currency.Rupees -= rupyCost;
+                rewardList.Add(new RewardListEntry { RewardType = 9, RewardId = 0, RewardNum = (int)viewer.Currency.Rupees });
+                break;
+        }
+
+        // Grant each catalog reward through the central dispatcher — covers sleeve (6), emblem
+        // (7), and any future bundled grants. ApplyAsync returns post-state-aware reward entries
+        // suitable for emission as-is.
+        foreach (var r in product.Rewards.OrderBy(r => r.OrderIndex))
+        {
+            var granted = await _rewards.ApplyAsync(viewer, (UserGoodsType)r.RewardType, r.RewardDetailId, r.RewardNumber);
+            foreach (var g in granted)
+            {
+                rewardList.Add(new RewardListEntry
+                {
+                    RewardType = g.RewardType,
+                    RewardId = g.RewardId,
+                    RewardNum = g.RewardNum,
+                });
+            }
+        }
+
+        await _db.SaveChangesAsync();
+
+        return new SleeveBuyResponse { RewardList = rewardList };
+    }
+
+    /// <summary>
+    /// A product is "purchased" once the viewer owns at least one of its sleeve-typed reward
+    /// grants. Emblem/other grants aren't load-bearing for this check — a viewer who somehow
+    /// ended up with the emblem but not the sleeve (e.g. partial gift) should still be allowed
+    /// to buy the product to pick up the sleeve.
+    /// </summary>
+    private static bool IsProductPurchased(SleeveShopProductEntry product, HashSet<long> ownedSleeveIds)
+    {
+        foreach (var r in product.Rewards)
+        {
+            if (r.RewardType == (int)UserGoodsType.Sleeve && ownedSleeveIds.Contains(r.RewardDetailId))
+                return true;
+        }
+        return false;
+    }
+
+    private Task<Viewer> LoadViewerGraphAsync(long viewerId) => _db.Viewers
+        .Include(v => v.Sleeves)
+        .Include(v => v.Emblems)
+        .Include(v => v.LeaderSkins)
+        .Include(v => v.Degrees)
+        .Include(v => v.MyPageBackgrounds)
+        .Include(v => v.Items).ThenInclude(i => i.Item)
+        .Include(v => v.Cards).ThenInclude(c => c.Card)
+        .AsSplitQuery()
+        .FirstAsync(v => v.Id == viewerId);
+}

SVSim.EmulatedEntrypoint/Controllers/SpotCardExchangeController.cs

@@ -0,0 +1,193 @@
+using Microsoft.AspNetCore.Mvc;
+using Microsoft.EntityFrameworkCore;
+using SVSim.Database;
+using SVSim.Database.Enums;
+using SVSim.Database.Models;
+using SVSim.Database.Services;
+using SVSim.EmulatedEntrypoint.Models.Dtos;
+using SVSim.EmulatedEntrypoint.Models.Dtos.Requests;
+using SVSim.EmulatedEntrypoint.Models.Dtos.Requests.SpotCardExchange;
+using SVSim.EmulatedEntrypoint.Models.Dtos.Responses.SpotCardExchange;
+
+namespace SVSim.EmulatedEntrypoint.Controllers;
+
+/// <summary>
+/// /spot_card_exchange/* — trade spot points for individual cards from the rotating exchange
+/// pool. Spot points are earned from battles/missions (not implemented here — earners live in
+/// battle/mission finish reward emitters via <see cref="RewardGrantService"/> +
+/// <see cref="UserGoodsType.SpotCardPoint"/>).
+/// </summary>
+[Route("spot_card_exchange")]
+public class SpotCardExchangeController : SVSimController
+{
+    /// <summary>
+    /// Pre-release exchange cap. Captures show "2" — global limit, not per-card. When
+    /// IsPreRelease is active on the catalog level we honour this; otherwise the cap is
+    /// effectively unbounded (UI never shows the warning).
+    /// </summary>
+    private const int PreReleaseLimit = 2;
+
+    private readonly SVSimDbContext _db;
+    private readonly RewardGrantService _rewards;
+    private readonly TimeProvider _time;
+
+    public SpotCardExchangeController(SVSimDbContext db, RewardGrantService rewards, TimeProvider time)
+    {
+        _db = db;
+        _rewards = rewards;
+        _time = time;
+    }
+
+    [HttpPost("top")]
+    public async Task<ActionResult<SpotCardExchangeTopResponse>> Top(BaseRequest _)
+    {
+        if (!TryGetViewerId(out long viewerId)) return Unauthorized();
+
+        var viewer = await _db.Viewers
+            .Where(v => v.Id == viewerId)
+            .Select(v => new { v.Currency.SpotPoints })
+            .FirstOrDefaultAsync();
+        if (viewer is null) return Unauthorized();
+
+        var catalog = await _db.SpotCardExchangeCatalog
+            .Where(c => c.IsEnabled)
+            .OrderBy(c => c.Id)
+            .ToListAsync();
+
+        var exchanges = await _db.ViewerSpotCardExchanges
+            .Where(e => e.ViewerId == viewerId)
+            .ToListAsync();
+        var exchangedIds = exchanges.Select(e => e.CardId).ToHashSet();
+        int preReleaseExchangedCount = exchanges.Count(e => e.IsPreRelease);
+        bool preReleaseActive = catalog.Any(c => c.IsPreRelease);
+        bool preReleaseLimitHit = preReleaseExchangedCount >= PreReleaseLimit;
+
+        // Build the 9-clan-bucket dict-of-arrays. Every clan slot is present even when empty;
+        // the inner dict always uses key "1" matching the captured prod shape.
+        var byClan = new List<Dictionary<string, List<SpotCardExchangeCardDto>>>(9);
+        for (int clan = 0; clan < 9; clan++)
+        {
+            byClan.Add(new Dictionary<string, List<SpotCardExchangeCardDto>>
+            {
+                ["1"] = new List<SpotCardExchangeCardDto>(),
+            });
+        }
+
+        foreach (var c in catalog)
+        {
+            int clanIdx = Math.Clamp(c.ClassId, 0, 8);
+            byClan[clanIdx]["1"].Add(new SpotCardExchangeCardDto
+            {
+                CardId = c.Id,
+                ExchangeStatus = ComputeExchangeStatus(c, exchangedIds, preReleaseLimitHit),
+                ExchangePoint = c.ExchangePoint.ToString(),
+                Class = c.ClassId.ToString(),
+                IsPreRelease = c.IsPreRelease,
+                TsRotationId = c.TsRotationId.ToString(),
+            });
+        }
+
+        return new SpotCardExchangeTopResponse
+        {
+            SpotPoint = checked((int)viewer.SpotPoints),
+            ExchangeableCardList = byClan,
+            SoonCycleOutCardSetId = string.Empty,   // No captured value to derive; spec allows ""
+            PreReleaseInfo = new PreReleaseInfoDto
+            {
+                IsPreRelease = preReleaseActive,
+                PreReleaseSpotCardExchangeCount = preReleaseExchangedCount,
+                PreReleaseSpotCardExchangeLimit = PreReleaseLimit,
+            },
+        };
+    }
+
+    [HttpPost("exchange")]
+    public async Task<ActionResult<SpotCardExchangeResponse>> Exchange(SpotCardExchangeRequest request)
+    {
+        if (!TryGetViewerId(out long viewerId)) return Unauthorized();
+
+        var entry = await _db.SpotCardExchangeCatalog.FindAsync((long)request.CardId);
+        if (entry is null || !entry.IsEnabled)
+            return BadRequest(new { error = "unknown_card" });
+
+        // Already-exchanged guard — each catalog row is one card per viewer.
+        var existingExchange = await _db.ViewerSpotCardExchanges
+            .FirstOrDefaultAsync(e => e.ViewerId == viewerId && e.CardId == entry.Id);
+        if (existingExchange is not null)
+            return BadRequest(new { error = "already_exchanged" });
+
+        if (entry.IsPreRelease)
+        {
+            int prCount = await _db.ViewerSpotCardExchanges
+                .CountAsync(e => e.ViewerId == viewerId && e.IsPreRelease);
+            if (prCount >= PreReleaseLimit)
+                return BadRequest(new { error = "pre_release_limit_reached" });
+        }
+
+        var viewer = await LoadViewerGraphAsync(viewerId);
+
+        var rewardList = new List<RewardListEntry>();
+
+        // Debit spot points. Client-supplied exchange_point isn't authoritative — server uses
+        // catalog price. Mirroring the build_deck/sleeve convention: post-state currency entry
+        // first, then grants.
+        if (viewer.Currency.SpotPoints < (ulong)entry.ExchangePoint)
+            return BadRequest(new { error = "insufficient_spot_points" });
+        viewer.Currency.SpotPoints -= (ulong)entry.ExchangePoint;
+        rewardList.Add(new RewardListEntry
+        {
+            RewardType = (int)UserGoodsType.SpotCardPoint,
+            RewardId = 0,
+            RewardNum = checked((int)viewer.Currency.SpotPoints),
+        });
+
+        // Grant the card itself via the existing card dispatcher (handles cosmetic cascade).
+        var granted = await _rewards.ApplyAsync(viewer, UserGoodsType.Card, entry.Id, 1);
+        foreach (var g in granted)
+        {
+            rewardList.Add(new RewardListEntry
+            {
+                RewardType = g.RewardType,
+                RewardId = g.RewardId,
+                RewardNum = g.RewardNum,
+            });
+        }
+
+        _db.ViewerSpotCardExchanges.Add(new ViewerSpotCardExchange
+        {
+            ViewerId = viewerId,
+            CardId = entry.Id,
+            IsPreRelease = entry.IsPreRelease,
+            ExchangedAt = _time.GetUtcNow().UtcDateTime,
+        });
+
+        await _db.SaveChangesAsync();
+        return new SpotCardExchangeResponse { RewardList = rewardList };
+    }
+
+    /// <summary>
+    /// Maps to <see cref="Wizard.SpotCardExchangeInfo.ExchangeStatus"/>:
+    ///   0 = EnableExchange
+    ///   1 = AlreadyExchange (viewer has already exchanged this card)
+    ///   2 = LimitOver (pre-release card and viewer hit the global pre-release cap)
+    /// Insufficient-balance is NOT surfaced here — the client greys those out by comparing
+    /// <c>spot_point</c> to <c>exchange_point</c>.
+    /// </summary>
+    private static int ComputeExchangeStatus(SpotCardExchangeEntry c, HashSet<long> exchangedIds, bool preReleaseLimitHit)
+    {
+        if (exchangedIds.Contains(c.Id)) return 1;
+        if (c.IsPreRelease && preReleaseLimitHit) return 2;
+        return 0;
+    }
+
+    private Task<Viewer> LoadViewerGraphAsync(long viewerId) => _db.Viewers
+        .Include(v => v.Cards).ThenInclude(c => c.Card)
+        .Include(v => v.Sleeves)
+        .Include(v => v.Emblems)
+        .Include(v => v.LeaderSkins)
+        .Include(v => v.Degrees)
+        .Include(v => v.MyPageBackgrounds)
+        .Include(v => v.Items).ThenInclude(i => i.Item)
+        .AsSplitQuery()
+        .FirstAsync(v => v.Id == viewerId);
+}

SVSim.EmulatedEntrypoint/Controllers/StoryController.cs

@@ -11,7 +11,12 @@ namespace SVSim.EmulatedEntrypoint.Controllers;
 public class StoryController : SVSimController
 {
     private readonly IStoryService _service;
-    public StoryController(IStoryService service) { _service = service; }
+    private readonly IMissionProgressService _missionProgress;
+    public StoryController(IStoryService service, IMissionProgressService missionProgress)
+    {
+        _service = service;
+        _missionProgress = missionProgress;
+    }
 
     [HttpPost("/story/section")]
     [HttpPost("/main_story/section")]
@@ -65,7 +70,28 @@ public class StoryController : SVSimController
     public async Task<ActionResult<FinishResponse>> Finish(FinishRequest req)
     {
         if (!TryGetViewerId(out long vid)) return Unauthorized();
-        return await _service.FinishAsync(ResolveApiType(), req, vid);
+        var result = await _service.FinishAsync(ResolveApiType(), req, vid);
+
+        // Emit story-chapter-finish events for mission/achievement progress.
+        var apiType = ResolveApiType();
+        var prefix = apiType switch
+        {
+            StoryApiType.Main => "main",
+            StoryApiType.Limited => "limited",
+            StoryApiType.Event => "event",
+            _ => null,
+        };
+        if (prefix is not null && req.StoryId != 0)
+        {
+            await _missionProgress.RecordEventAsync(vid, new[]
+            {
+                "story_chapter_finish",
+                $"story_chapter_finish:{prefix}",
+                $"story_chapter_finish:{prefix}:{req.StoryId}",
+            });
+        }
+
+        return result;
     }
 
     [HttpPost("/main_story/all_finish")]

SVSim.EmulatedEntrypoint/Controllers/ToolController.cs

@@ -0,0 +1,51 @@
+using Microsoft.AspNetCore.Authorization;
+using Microsoft.AspNetCore.Mvc;
+using SVSim.Database.Repositories.Viewer;
+using SVSim.EmulatedEntrypoint.Extensions;
+using SVSim.EmulatedEntrypoint.Models.Dtos.Requests;
+using SVSim.EmulatedEntrypoint.Models.Dtos.Responses;
+
+namespace SVSim.EmulatedEntrypoint.Controllers;
+
+public class ToolController : SVSimController
+{
+    private readonly ILogger<ToolController> _logger;
+    private readonly IViewerRepository _viewerRepository;
+
+    public ToolController(ILogger<ToolController> logger, IViewerRepository viewerRepository)
+    {
+        _logger = logger;
+        _viewerRepository = viewerRepository;
+    }
+
+    /// <summary>
+    /// <c>POST /tool/signup</c> — the client's first request on a fresh boot. Creates (or returns
+    /// the existing) Viewer keyed on the request's UDID. The interesting outputs (viewer_id,
+    /// short_udid, udid) all flow back via <c>data_headers</c>, populated by the translation
+    /// middleware after this action returns — we just need to stash the viewer on HttpContext so
+    /// the middleware picks it up the same way the auth handler does for logged-in endpoints.
+    ///
+    /// Spec: <c>docs/api-spec/endpoints/pre-login/tool-signup.md</c>.
+    /// </summary>
+    [AllowAnonymous]
+    [HttpPost("signup")]
+    public async Task<SignupResponse> Signup([FromBody] SignupRequest request)
+    {
+        Guid? maybeUdid = HttpContext.GetUdid();
+        if (maybeUdid is not Guid udid || udid == Guid.Empty)
+        {
+            throw new InvalidOperationException(
+                "Cannot register viewer: request has no resolvable UDID (missing UDID/SID headers, or " +
+                "SessionidMappingMiddleware couldn't decode the UDID header).");
+        }
+
+        var viewer = await _viewerRepository.GetViewerByUdid(udid)
+                     ?? await _viewerRepository.RegisterAnonymousViewer(udid);
+
+        HttpContext.SetViewer(viewer);
+        _logger.LogInformation("Signup resolved for udid={Udid} → viewer_id={ViewerId}, short_udid={ShortUdid}.",
+            udid, viewer.Id, viewer.ShortUdid);
+
+        return new SignupResponse();
+    }
+}

SVSim.EmulatedEntrypoint/Extensions/HttpContextExtensions.cs

@@ -1,11 +1,13 @@
 using SVSim.Database.Models;
+using SVSim.EmulatedEntrypoint.Constants;
+using SVSim.EmulatedEntrypoint.Services;
 
 namespace SVSim.EmulatedEntrypoint.Extensions;
 
 public static class HttpContextExtensions
 {
     private const string ViewerItemName = "SVSimViewer";
-    
+
     public static Viewer? GetViewer(this HttpContext context)
     {
         if (context.Items.TryGetValue(ViewerItemName, out object? viewer))
@@ -21,4 +23,18 @@ public static class HttpContextExtensions
         context.Items[ViewerItemName] = viewer;
         return viewer;
     }
-}
+
+    /// <summary>
+    /// Resolves the client's UDID for this request by looking up the SID header in the
+    /// in-memory SID→UDID dict that <see cref="Middlewares.SessionidMappingMiddleware"/>
+    /// populates from the UDID header. Returns null when the SID isn't mapped (e.g. the
+    /// request didn't carry a UDID header at all, or carried an undecodable one).
+    /// </summary>
+    public static Guid? GetUdid(this HttpContext context)
+    {
+        string? sid = context.Request.Headers[NetworkConstants.SessionIdHeaderName];
+        if (sid is null) return null;
+        var sessionService = context.RequestServices.GetService<ShadowverseSessionService>();
+        return sessionService?.GetUdidFromSessionId(sid);
+    }
+}

SVSim.EmulatedEntrypoint/Middlewares/ShadowverseTranslationMiddleware.cs

@@ -100,7 +100,19 @@ public class ShadowverseTranslationMiddleware : IMiddleware
             throw;
         }
 
-        Type requestType = endpointDescriptor.Parameters.FirstOrDefault().ParameterType;
+        var firstParam = endpointDescriptor.Parameters.FirstOrDefault();
+        if (firstParam is null)
+        {
+            // Action method has no parameters — middleware can't bind the (encrypted+msgpacked)
+            // body to anything. The codebase convention is to take a BaseRequest even for body-
+            // less endpoints (see e.g. PuzzleController.Info(BaseRequest _)). Fail loud with a
+            // specific message rather than NREing below on .ParameterType.
+            throw new InvalidOperationException(
+                $"Action {endpointDescriptor.DisplayName} has no parameters; the SV translation " +
+                "middleware needs at least one to bind the decrypted body. Add a BaseRequest parameter " +
+                "(or a derived DTO) — see other *Info/*Top actions for the convention.");
+        }
+        Type requestType = firstParam.ParameterType;
         object? data;
         try
         {
@@ -166,7 +178,11 @@ public class ShadowverseTranslationMiddleware : IMiddleware
                 // populated (prod sends real numbers for the title check too, but 0 / 0 satisfies
                 // the client's BaseTask.Parse which only reads result_code + servertime here).
                 ShortUdid = viewer?.ShortUdid ?? 0,
-                ViewerId = viewer?.Id ?? 0
+                ViewerId = viewer?.Id ?? 0,
+                // Echo the decrypted-against UDID. Most clients ignore this field; SignUpTask.Parse
+                // requires it (validates against Certification.Udid on the response). Comes from
+                // mappedUdid (the value used for AES); never from controller state.
+                Udid = mappedUdid?.ToString() ?? ""
             }
         };
 

SVSim.EmulatedEntrypoint/Models/Dtos/Achievement/AchievementReceiveRewardRequest.cs

@@ -0,0 +1,17 @@
+using System.Text.Json.Serialization;
+using MessagePack;
+using SVSim.EmulatedEntrypoint.Models.Dtos.Requests;
+
+namespace SVSim.EmulatedEntrypoint.Models.Dtos.Achievement;
+
+[MessagePackObject]
+public class AchievementReceiveRewardRequest : BaseRequest
+{
+    [Key("achievement_type")]
+    [JsonPropertyName("achievement_type")]
+    public int AchievementType { get; set; }
+
+    [Key("level")]
+    [JsonPropertyName("level")]
+    public int Level { get; set; }
+}

SVSim.EmulatedEntrypoint/Models/Dtos/Achievement/AchievementReceiveRewardResponse.cs

@@ -0,0 +1,33 @@
+using System.Text.Json.Serialization;
+using MessagePack;
+using SVSim.EmulatedEntrypoint.Models.Dtos.Common.Mission;
+
+namespace SVSim.EmulatedEntrypoint.Models.Dtos.Achievement;
+
+[MessagePackObject(keyAsPropertyName: true)]
+public class TotalReceiveCountDto
+{
+    [Key(0)][JsonPropertyName("reward_type")] public int RewardType { get; set; }
+    [Key(1)][JsonPropertyName("reward_detail_id")] public long RewardDetailId { get; set; }
+    [Key(2)][JsonPropertyName("reward_count")] public int RewardCount { get; set; }
+    [Key(3)][JsonPropertyName("item_type")] public int ItemType { get; set; }
+    [Key(4)][JsonPropertyName("is_usable")] public bool IsUsable { get; set; } = true;
+}
+
+[MessagePackObject(keyAsPropertyName: true)]
+public class RewardGrantDto
+{
+    [Key(0)][JsonPropertyName("reward_type")] public int RewardType { get; set; }
+    [Key(1)][JsonPropertyName("reward_id")] public long RewardId { get; set; }
+    [Key(2)][JsonPropertyName("reward_num")] public int RewardNum { get; set; }
+}
+
+/// <summary>
+/// /achievement/receive_reward response — MissionInfoDataDto + two extras consumed by
+/// PlayerStaticData.UpdateHaveUserGoodsNumByJsonData per AchievementReceiveRewardTask.cs:33.
+/// </summary>
+public sealed class AchievementReceiveRewardResponse : MissionInfoDataDto
+{
+    [JsonPropertyName("total_receive_count_list")] public List<TotalReceiveCountDto> TotalReceiveCountList { get; set; } = new();
+    [JsonPropertyName("reward_list")] public List<RewardGrantDto> RewardList { get; set; } = new();
+}

SVSim.EmulatedEntrypoint/Models/Dtos/Common/Mission/BPMonthlyMissionDto.cs

@@ -0,0 +1,31 @@
+using System.Text.Json.Serialization;
+using MessagePack;
+
+namespace SVSim.EmulatedEntrypoint.Models.Dtos.Common.Mission;
+
+/// <summary>
+/// Inner reward block. STRING-typed on wire (capture confirms reward_type/reward_detail_id/
+/// reward_number all serialize as JSON strings here, unlike UserMission where they're int).
+/// </summary>
+[MessagePackObject(keyAsPropertyName: true)]
+public class BPMonthlyMissionRewardInfoDto
+{
+    [Key(0)][JsonPropertyName("reward_type")] public string RewardType { get; set; } = "";
+    [Key(1)][JsonPropertyName("reward_detail_id")] public string RewardDetailId { get; set; } = "";
+    [Key(2)][JsonPropertyName("reward_number")] public string RewardNumber { get; set; } = "";
+}
+
+/// <summary>
+/// One BP monthly mission. reward_info is OPTIONAL — capture shows "Play 5 Challenge matches"
+/// has no reward_info block (only BP points). Global WhenWritingNull policy omits when null.
+/// </summary>
+[MessagePackObject(keyAsPropertyName: true)]
+public class BPMonthlyMissionDto
+{
+    [Key(0)][JsonPropertyName("name")] public string Name { get; set; } = "";
+    [Key(1)][JsonPropertyName("is_cleared")] public bool IsCleared { get; set; }
+    [Key(2)][JsonPropertyName("require_number")] public int RequireNumber { get; set; }
+    [Key(3)][JsonPropertyName("done_number")] public int DoneNumber { get; set; }
+    [Key(4)][JsonPropertyName("battle_pass_point")] public int BattlePassPoint { get; set; }
+    [Key(5)][JsonPropertyName("reward_info")] public BPMonthlyMissionRewardInfoDto? RewardInfo { get; set; }
+}

SVSim.EmulatedEntrypoint/Models/Dtos/Common/Mission/BPMonthlyMissionsDto.cs

@@ -0,0 +1,17 @@
+using System.Text.Json.Serialization;
+using MessagePack;
+
+namespace SVSim.EmulatedEntrypoint.Models.Dtos.Common.Mission;
+
+/// <summary>
+/// Outer block. Date strings use the capture's space-separated JST format
+/// ("2026-05-01 02:00:00"). The whole block is omitted from /mission/info when no monthly
+/// missions are seeded for the current month.
+/// </summary>
+[MessagePackObject(keyAsPropertyName: true)]
+public class BPMonthlyMissionsDto
+{
+    [Key(0)][JsonPropertyName("start_date")] public string StartDate { get; set; } = "";
+    [Key(1)][JsonPropertyName("end_date")] public string EndDate { get; set; } = "";
+    [Key(2)][JsonPropertyName("mission_list")] public List<BPMonthlyMissionDto> MissionList { get; set; } = new();
+}

SVSim.EmulatedEntrypoint/Models/Dtos/Common/Mission/MissionInfoDataDto.cs

@@ -0,0 +1,38 @@
+using System.Text.Json.Serialization;
+using MessagePack;
+
+namespace SVSim.EmulatedEntrypoint.Models.Dtos.Common.Mission;
+
+/// <summary>
+/// Top-level payload for /mission/info responses (also reused by /mission/retire,
+/// /mission/change_receive_setting; /achievement/receive_reward adds reward_list +
+/// total_receive_count_list to this shape via inheritance).
+///
+/// CanChangeMissionTime is wire-required to be present (capture shows null when active).
+/// Override [JsonIgnore(Condition = Never)] per memory project_wire_null_policy.
+/// </summary>
+[MessagePackObject(keyAsPropertyName: true)]
+public class MissionInfoDataDto
+{
+    [Key(0)][JsonPropertyName("user_mission_list")] public List<UserMissionDto> UserMissionList { get; set; } = new();
+    [Key(1)][JsonPropertyName("is_change_mission")] public bool IsChangeMission { get; set; }
+
+    [Key(2)]
+    [JsonPropertyName("can_change_mission_time")]
+    [JsonIgnore(Condition = JsonIgnoreCondition.Never)]
+    public long? CanChangeMissionTime { get; set; }
+
+    [Key(3)][JsonPropertyName("is_change_receive_type")] public bool IsChangeReceiveType { get; set; }
+
+    [Key(4)]
+    [JsonPropertyName("can_change_receive_type_time")]
+    [JsonIgnore(Condition = JsonIgnoreCondition.Never)]
+    public long? CanChangeReceiveTypeTime { get; set; }
+
+    [Key(5)][JsonPropertyName("user_achievement_list")] public List<UserAchievementDto> UserAchievementList { get; set; } = new();
+    [Key(6)][JsonPropertyName("mission_receive_type")] public string MissionReceiveType { get; set; } = "0";
+
+    [Key(7)]
+    [JsonPropertyName("battle_pass_monthly_mission")]
+    public BPMonthlyMissionsDto? BattlePassMonthlyMission { get; set; }
+}

SVSim.EmulatedEntrypoint/Models/Dtos/Common/Mission/UserAchievementDto.cs

@@ -0,0 +1,28 @@
+using System.Text.Json.Serialization;
+using MessagePack;
+
+namespace SVSim.EmulatedEntrypoint.Models.Dtos.Common.Mission;
+
+/// <summary>
+/// Wire shape of UserAchievement (per MissionInfoDetail.cs:98-116). ios/android are always
+/// empty strings in our world. max_level is computed from catalog (MAX(Level) per type).
+/// </summary>
+[MessagePackObject(keyAsPropertyName: true)]
+public class UserAchievementDto
+{
+    [Key(0)][JsonPropertyName("achievement_type")] public int AchievementType { get; set; }
+    [Key(1)][JsonPropertyName("achievement_status")] public int AchievementStatus { get; set; }
+    [Key(2)][JsonPropertyName("level")] public int Level { get; set; }
+    [Key(3)][JsonPropertyName("now_achieved_level")] public int NowAchievedLevel { get; set; }
+    [Key(4)][JsonPropertyName("result_announce_saw_level")] public int ResultAnnounceSawLevel { get; set; }
+    [Key(5)][JsonPropertyName("total_count")] public int TotalCount { get; set; }
+    [Key(6)][JsonPropertyName("achievement_name")] public string AchievementName { get; set; } = "";
+    [Key(7)][JsonPropertyName("require_number")] public int RequireNumber { get; set; }
+    [Key(8)][JsonPropertyName("reward_type")] public int RewardType { get; set; }
+    [Key(9)][JsonPropertyName("reward_detail_id")] public long RewardDetailId { get; set; }
+    [Key(10)][JsonPropertyName("reward_number")] public int RewardNumber { get; set; }
+    [Key(11)][JsonPropertyName("max_level")] public int MaxLevel { get; set; }
+    [Key(12)][JsonPropertyName("order_num")] public int OrderNum { get; set; }
+    [Key(13)][JsonPropertyName("ios")] public string Ios { get; set; } = "";
+    [Key(14)][JsonPropertyName("android")] public string Android { get; set; } = "";
+}

SVSim.EmulatedEntrypoint/Models/Dtos/Common/Mission/UserMissionDto.cs

@@ -0,0 +1,29 @@
+using System.Text.Json.Serialization;
+using MessagePack;
+
+namespace SVSim.EmulatedEntrypoint.Models.Dtos.Common.Mission;
+
+/// <summary>
+/// Wire shape of UserMission (per MissionInfoDetail.cs:75-95). lot_type and battle_pass_point
+/// are STRING-typed on wire (client uses .ToInt() but emits as string in capture). All other
+/// scalar fields are int. end_time omitted when null per UserMission.Parse() optional read.
+/// </summary>
+[MessagePackObject(keyAsPropertyName: true)]
+public class UserMissionDto
+{
+    [Key(0)][JsonPropertyName("id")] public long Id { get; set; }
+    [Key(1)][JsonPropertyName("mission_id")] public int MissionId { get; set; }
+    [Key(2)][JsonPropertyName("total_count")] public int TotalCount { get; set; }
+    [Key(3)][JsonPropertyName("mission_status")] public int MissionStatus { get; set; }
+    [Key(4)][JsonPropertyName("display_order")] public int DisplayOrder { get; set; }
+    [Key(5)][JsonPropertyName("mission_name")] public string MissionName { get; set; } = "";
+    [Key(6)][JsonPropertyName("lot_type")] public string LotType { get; set; } = "";
+    [Key(7)][JsonPropertyName("battle_pass_point")] public string BattlePassPoint { get; set; } = "";
+    [Key(8)][JsonPropertyName("require_number")] public int RequireNumber { get; set; }
+    [Key(9)][JsonPropertyName("reward_type")] public int RewardType { get; set; }
+    [Key(10)][JsonPropertyName("reward_detail_id")] public long RewardDetailId { get; set; }
+    [Key(11)][JsonPropertyName("reward_number")] public int RewardNumber { get; set; }
+    [Key(12)][JsonPropertyName("default_flag")] public bool DefaultFlag { get; set; }
+    [Key(13)][JsonPropertyName("start_time")] public long StartTime { get; set; }
+    [Key(14)][JsonPropertyName("end_time")] public long? EndTime { get; set; }
+}

SVSim.EmulatedEntrypoint/Models/Dtos/Internal/DataHeaders.cs

@@ -21,4 +21,15 @@ public class DataHeaders
     [JsonPropertyName("result_code")]
     [Key("result_code")]
     public int ResultCode { get; set; }
-}
+
+    /// <summary>
+    /// Echoed UDID. Read by <c>SignUpTask.Parse</c> to validate response identity (client logs
+    /// <c>udid一致しません</c> and discards the response on mismatch); ignored by every other
+    /// client task. Always set by <c>ShadowverseTranslationMiddleware</c> from the request's
+    /// resolved UDID — never from controller state. Empty string when the SID→UDID lookup misses
+    /// (request without UDID/SID headers).
+    /// </summary>
+    [JsonPropertyName("udid")]
+    [Key("udid")]
+    public string Udid { get; set; } = "";
+}

SVSim.EmulatedEntrypoint/Models/Dtos/Mission/MissionChangeReceiveSettingRequest.cs

@@ -0,0 +1,13 @@
+using System.Text.Json.Serialization;
+using MessagePack;
+using SVSim.EmulatedEntrypoint.Models.Dtos.Requests;
+
+namespace SVSim.EmulatedEntrypoint.Models.Dtos.Mission;
+
+[MessagePackObject]
+public class MissionChangeReceiveSettingRequest : BaseRequest
+{
+    [Key("mission_receive_type")]
+    [JsonPropertyName("mission_receive_type")]
+    public int MissionReceiveType { get; set; }
+}

SVSim.EmulatedEntrypoint/Models/Dtos/Mission/MissionRetireRequest.cs

@@ -0,0 +1,13 @@
+using System.Text.Json.Serialization;
+using MessagePack;
+using SVSim.EmulatedEntrypoint.Models.Dtos.Requests;
+
+namespace SVSim.EmulatedEntrypoint.Models.Dtos.Mission;
+
+[MessagePackObject]
+public class MissionRetireRequest : BaseRequest
+{
+    [Key("id")]
+    [JsonPropertyName("id")]
+    public long Id { get; set; }
+}

SVSim.EmulatedEntrypoint/Models/Dtos/Requests/ItemPurchase/ItemPurchasePurchaseRequest.cs

@@ -0,0 +1,22 @@
+using System.Text.Json.Serialization;
+using MessagePack;
+using SVSim.EmulatedEntrypoint.Models.Dtos.Requests;
+
+namespace SVSim.EmulatedEntrypoint.Models.Dtos.Requests.ItemPurchase;
+
+/// <summary>
+/// /item_purchase/purchase request body. <c>rest</c> is the client's locally-cached remaining
+/// quota — used as an optional optimistic-concurrency check on the server. Not authoritative;
+/// the server's own counter is canonical.
+/// </summary>
+[MessagePackObject]
+public class ItemPurchasePurchaseRequest : BaseRequest
+{
+    [JsonPropertyName("purchase_id")]
+    [Key("purchase_id")]
+    public int PurchaseId { get; set; }
+
+    [JsonPropertyName("rest")]
+    [Key("rest")]
+    public int Rest { get; set; }
+}

SVSim.EmulatedEntrypoint/Models/Dtos/Requests/LeaderSkin/LeaderSkinBuyRequest.cs

@@ -0,0 +1,26 @@
+using System.Text.Json.Serialization;
+using MessagePack;
+using SVSim.EmulatedEntrypoint.Models.Dtos.Requests;
+
+namespace SVSim.EmulatedEntrypoint.Models.Dtos.Requests.LeaderSkin;
+
+/// <summary>
+/// /leader_skin/buy request body. sales_type is ShopCommonUtility.SalesType:
+/// 0=free, 1=crystal, 2=rupy, 3=ticket (v1: 3 returns 501 — no ticket-priced skin captured).
+/// <see cref="ItemId"/> is the ticket item id when paying with a ticket, null otherwise.
+/// </summary>
+[MessagePackObject]
+public class LeaderSkinBuyRequest : BaseRequest
+{
+    [JsonPropertyName("product_id")]
+    [Key("product_id")]
+    public int ProductId { get; set; }
+
+    [JsonPropertyName("sales_type")]
+    [Key("sales_type")]
+    public int SalesType { get; set; }
+
+    [JsonPropertyName("item_id")]
+    [Key("item_id")]
+    public long? ItemId { get; set; }
+}

SVSim.EmulatedEntrypoint/Models/Dtos/Requests/LeaderSkin/LeaderSkinBuySetItemRequest.cs

@@ -0,0 +1,18 @@
+using System.Text.Json.Serialization;
+using MessagePack;
+using SVSim.EmulatedEntrypoint.Models.Dtos.Requests;
+
+namespace SVSim.EmulatedEntrypoint.Models.Dtos.Requests.LeaderSkin;
+
+/// <summary>
+/// /leader_skin/buy_set_item — claim the series-completion bonus once every skin in the series
+/// is owned. <c>sales_type</c> field exists on the client's param class but is never set; server
+/// ignores it.
+/// </summary>
+[MessagePackObject]
+public class LeaderSkinBuySetItemRequest : BaseRequest
+{
+    [JsonPropertyName("series_id")]
+    [Key("series_id")]
+    public int SeriesId { get; set; }
+}

SVSim.EmulatedEntrypoint/Models/Dtos/Requests/LeaderSkin/LeaderSkinBuySetRequest.cs

@@ -0,0 +1,24 @@
+using System.Text.Json.Serialization;
+using MessagePack;
+using SVSim.EmulatedEntrypoint.Models.Dtos.Requests;
+
+namespace SVSim.EmulatedEntrypoint.Models.Dtos.Requests.LeaderSkin;
+
+/// <summary>
+/// /leader_skin/buy_set — purchase every skin in a series in one call (cheaper per-skin).
+/// </summary>
+[MessagePackObject]
+public class LeaderSkinBuySetRequest : BaseRequest
+{
+    [JsonPropertyName("series_id")]
+    [Key("series_id")]
+    public int SeriesId { get; set; }
+
+    [JsonPropertyName("sales_type")]
+    [Key("sales_type")]
+    public int SalesType { get; set; }
+
+    [JsonPropertyName("item_id")]
+    [Key("item_id")]
+    public long? ItemId { get; set; }
+}

SVSim.EmulatedEntrypoint/Models/Dtos/Requests/SignupRequest.cs

@@ -0,0 +1,40 @@
+using MessagePack;
+using System.Text.Json.Serialization;
+
+namespace SVSim.EmulatedEntrypoint.Models.Dtos.Requests;
+
+/// <summary>
+/// <c>POST /tool/signup</c> request body. Spec:
+/// <c>docs/api-spec/endpoints/pre-login/tool-signup.md</c>. Client source:
+/// <c>Shadowverse_Code_2026-05-23/Cute/SignUpTask.cs</c> (LoginPostParams).
+///
+/// All fields are device telemetry; the server doesn't use them in v1 but still binds them so
+/// the request shape matches the spec exactly.
+/// </summary>
+[MessagePackObject]
+public class SignupRequest
+{
+    [JsonPropertyName("device_name")]
+    [Key("device_name")]
+    public string DeviceName { get; set; } = "";
+
+    [JsonPropertyName("client_type")]
+    [Key("client_type")]
+    public string ClientType { get; set; } = "";
+
+    [JsonPropertyName("os_version")]
+    [Key("os_version")]
+    public string OsVersion { get; set; } = "";
+
+    [JsonPropertyName("app_version")]
+    [Key("app_version")]
+    public string AppVersion { get; set; } = "";
+
+    [JsonPropertyName("resource_version")]
+    [Key("resource_version")]
+    public string ResourceVersion { get; set; } = "";
+
+    [JsonPropertyName("carrier")]
+    [Key("carrier")]
+    public string Carrier { get; set; } = "";
+}

SVSim.EmulatedEntrypoint/Models/Dtos/Requests/Sleeve/SleeveBuyRequest.cs

@@ -0,0 +1,25 @@
+using System.Text.Json.Serialization;
+using MessagePack;
+using SVSim.EmulatedEntrypoint.Models.Dtos.Requests;
+
+namespace SVSim.EmulatedEntrypoint.Models.Dtos.Requests.Sleeve;
+
+/// <summary>
+/// /sleeve/buy request body. sales_type is ShopCommonUtility.SalesType:
+/// 0=free, 1=crystal, 2=rupy, 3=ticket (v1: 3 returns 501, no ticket-priced sleeve captured).
+/// </summary>
+[MessagePackObject]
+public class SleeveBuyRequest : BaseRequest
+{
+    [JsonPropertyName("series_id")]
+    [Key("series_id")]
+    public int SeriesId { get; set; }
+
+    [JsonPropertyName("product_id")]
+    [Key("product_id")]
+    public int ProductId { get; set; }
+
+    [JsonPropertyName("sales_type")]
+    [Key("sales_type")]
+    public int SalesType { get; set; }
+}

SVSim.EmulatedEntrypoint/Models/Dtos/Requests/SpotCardExchange/SpotCardExchangeRequest.cs

@@ -0,0 +1,22 @@
+using System.Text.Json.Serialization;
+using MessagePack;
+using SVSim.EmulatedEntrypoint.Models.Dtos.Requests;
+
+namespace SVSim.EmulatedEntrypoint.Models.Dtos.Requests.SpotCardExchange;
+
+/// <summary>
+/// /spot_card_exchange/exchange request — trade <see cref="ExchangePoint"/> spot points for
+/// the card identified by <see cref="CardId"/>. The exchange_point field is the client's view
+/// of the price (sanity-check it against the catalog server-side).
+/// </summary>
+[MessagePackObject]
+public class SpotCardExchangeRequest : BaseRequest
+{
+    [JsonPropertyName("card_id")]
+    [Key("card_id")]
+    public int CardId { get; set; }
+
+    [JsonPropertyName("exchange_point")]
+    [Key("exchange_point")]
+    public int ExchangePoint { get; set; }
+}