feat(guild): controller scaffolding + /guild/info baseline

- 5 common DTOs under Models/Dtos/Common/Guild/ (GuildDetailDto,
  GuildUserBaseDto, GuildMemberInfoDto, ChatUserDto, ChatMessageDto)
- 28 per-endpoint request/response DTOs under Models/Dtos/Guild/ and
  Models/Dtos/GuildChat/ with full [MessagePackObject]/[Key]/
  [JsonPropertyName] attribute mirrors on every property
- GuildController (22 actions): /guild/info returns prod-shape with
  config-backed max_member_num/max_sub_leader_num/usable_stamp_list;
  21 stubs return empty/default DTOs
- GuildChatController (7 stubs), /guild_chat/messages stub returns
  wait_interval=10 per config
- 29 new routing smoke test cases (100 total, all pass)
- GuildWireShape literal-JSON test for GuildInfoResponse (1/1 pass)
- GameConfigurationJsonbTests updated for 17th GuildConfig section
- Total: 1422 tests pass, 0 errors

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

SVSim.UnitTests/Models/GameConfigurationJsonbTests.cs

@@ -25,14 +25,15 @@ public class GameConfigurationJsonbTests
         var rows = await db.GameConfigs.AsNoTracking().ToListAsync();
         var byName = rows.ToDictionary(r => r.SectionName);
 
-        // One row per [ConfigSection]-marked POCO (16 sections today: Player, DefaultGrants,
+        // One row per [ConfigSection]-marked POCO (17 sections today: Player, DefaultGrants,
         // DefaultLoadout, Challenge, Rotation, PackRates, MyRotationSchedule, Story, ResourceConfig,
-        // Freeplay, ArenaTwoPick, Matching, CardMasterConfig, ColosseumSeason, ColosseumRounds, LoginBonus).
+        // Freeplay, ArenaTwoPick, Matching, CardMasterConfig, ColosseumSeason, ColosseumRounds,
+        // LoginBonus, Guild).
         Assert.That(byName.Keys, Is.EquivalentTo(new[]
         {
             "Player", "DefaultGrants", "DefaultLoadout", "Challenge", "Rotation", "PackRates",
             "MyRotationSchedule", "Story", "ResourceConfig", "Freeplay", "ArenaTwoPick", "Matching",
-            "CardMasterConfig", "ColosseumSeason", "ColosseumRounds", "LoginBonus",
+            "CardMasterConfig", "ColosseumSeason", "ColosseumRounds", "LoginBonus", "Guild",
         }));
 
         var resources = JsonSerializer.Deserialize<ResourceConfig>(byName["ResourceConfig"].ValueJson)!;

SVSim.UnitTests/RoutingSmokeTests.cs

@@ -146,6 +146,38 @@ public class RoutingSmokeTests
     [TestCase("/rotation_free_battle/finish")]
     [TestCase("/unlimited_free_battle/finish")]
     [TestCase("/free_battle/force_finish")]
+    // Guild endpoints (Task 5)
+    [TestCase("/guild/info")]
+    [TestCase("/guild/create")]
+    [TestCase("/guild/breakup")]
+    [TestCase("/guild/update")]
+    [TestCase("/guild/update_description")]
+    [TestCase("/guild/update_emblem")]
+    [TestCase("/guild/search_guild")]
+    [TestCase("/guild/emblem_list")]
+    [TestCase("/guild/others_info")]
+    [TestCase("/guild/friend_list")]
+    [TestCase("/guild/invite_user_list")]
+    [TestCase("/guild/invited_guild_list")]
+    [TestCase("/guild/invite")]
+    [TestCase("/guild/cancel_invite")]
+    [TestCase("/guild/reject_invite")]
+    [TestCase("/guild/join")]
+    [TestCase("/guild/cancel_join_request")]
+    [TestCase("/guild/join_request_list")]
+    [TestCase("/guild/join_request_accept")]
+    [TestCase("/guild/reject_join_request")]
+    [TestCase("/guild/leave")]
+    [TestCase("/guild/remove")]
+    [TestCase("/guild/change_role")]
+    // GuildChat endpoints (Task 5)
+    [TestCase("/guild_chat/messages")]
+    [TestCase("/guild_chat/post")]
+    [TestCase("/guild_chat/add_deck")]
+    [TestCase("/guild_chat/delete_deck")]
+    [TestCase("/guild_chat/add_replay")]
+    [TestCase("/guild_chat/replay_detail")]
+    [TestCase("/guild_chat/deck_log")]
     public async Task Authenticated_route_resolves(string path)
     {
         using var factory = new TestFactory();

SVSim.UnitTests/Wire/GuildWireShape.cs

@@ -0,0 +1,40 @@
+using NUnit.Framework;
+using System.Text.Json;
+using SVSim.EmulatedEntrypoint.Models.Dtos.Guild;
+
+namespace SVSim.UnitTests.Wire;
+
+[TestFixture]
+public class GuildWireShape
+{
+    private static readonly JsonSerializerOptions Opts = new()
+    {
+        PropertyNamingPolicy = JsonNamingPolicy.SnakeCaseLower,
+        DefaultIgnoreCondition = System.Text.Json.Serialization.JsonIgnoreCondition.WhenWritingNull,
+    };
+
+    [Test]
+    public void GuildInfo_non_joined_serializes_to_prod_shape()
+    {
+        var resp = new GuildInfoResponse
+        {
+            MaxMemberNum = 30,
+            MaxSubLeaderNum = 2,
+            GuildStatus = 0,
+            UsableStampList = Enumerable.Range(100001, 20).Select(i => i.ToString()).ToList(),
+        };
+        var json = JsonSerializer.Serialize(resp, Opts);
+        using var doc = JsonDocument.Parse(json);
+        var root = doc.RootElement;
+
+        Assert.That(root.GetProperty("max_member_num").GetString(), Is.EqualTo("30"));
+        Assert.That(root.GetProperty("max_sub_leader_num").GetString(), Is.EqualTo("2"));
+        Assert.That(root.GetProperty("guild_status").GetString(), Is.EqualTo("0"));
+        Assert.That(root.GetProperty("usable_stamp_list").EnumerateArray().Select(e => e.GetString()).First(), Is.EqualTo("100001"));
+
+        // The four nullable fields MUST NOT appear when null:
+        Assert.That(root.TryGetProperty("guild", out _), Is.False);
+        Assert.That(root.TryGetProperty("join_request_count", out _), Is.False);
+        Assert.That(root.TryGetProperty("invite_count", out _), Is.False);
+    }
+}