refactor(bootstrap): finalize load-index migration; GlobalsImporter is now a stub

Stage 9C of the bootstrap-seed-refactor:

- Add 6 seed DTOs for the card-id-keyed load-index tables (SpotCard,
  ReprintedCard, UnlimitedRestriction, LoadingExclusionCard, MaintenanceCard,
  FeatureMaintenance).
- Add CardListsImporter: idempotent upsert of the 6 tables, sharing one
  Cards FK set for orphan-warning. FeatureMaintenances clear-and-rewrites
  (synthetic ordinal Id; no natural key).
- Add RotationFlagUpdater: reads RotationConfig.RotationCardSetIds from the
  GameConfigs section (populated by RotationConfigImporter) and flips
  CardSet.IsInRotation to match.
- Add RotationConfig.RotationCardSetIds list property + wire it through
  RotationConfigImporter. No migration needed (sections are JSON blobs).
- RotationConfigImporter: use legacy local-kind DateTime parse for schedule
  windows so the JSON round-trip stays byte-equivalent to GlobalsImporter.
- Strip GlobalsImporter down to a no-op stub (Task 10 will delete it).
- Wire all 9 new importers into Program.cs and SVSimTestFactory.SeedGlobalsAsync,
  in the order RotationConfigImporter -> ... -> CardListsImporter -> RotationFlagUpdater.
- Delete prod-captures/load-index-2026-05-23.json.
- Add CardListsImporterTests covering each sub-table, idempotency,
  empty-seed handling, orphan-warning, and the clear-and-rewrite path.

Tests: 391 passing (382 baseline + 9 new).

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

SVSim.Bootstrap/Models/Seed/FeatureMaintenanceSeed.cs

@@ -0,0 +1,16 @@
+using System.Text.Json;
+using System.Text.Json.Serialization;
+
+namespace SVSim.Bootstrap.Models.Seed;
+
+/// <summary>
+/// Mirrors one entry of <c>seeds/feature-maintenances.json</c>. Source: <c>/load/index
+/// data.feature_maintenance_list</c> (array of dicts; usually empty). <see cref="Data"/> is
+/// the raw element so it round-trips verbatim into the entity's jsonb column.
+/// </summary>
+public sealed class FeatureMaintenanceSeed
+{
+    [JsonPropertyName("id")] public int Id { get; set; }
+    [JsonPropertyName("feature_key")] public string FeatureKey { get; set; } = "";
+    [JsonPropertyName("data")] public JsonElement Data { get; set; }
+}

SVSim.Bootstrap/Models/Seed/LoadingExclusionCardSeed.cs

@@ -0,0 +1,12 @@
+using System.Text.Json.Serialization;
+
+namespace SVSim.Bootstrap.Models.Seed;
+
+/// <summary>
+/// Mirrors one entry of <c>seeds/loading-exclusion-cards.json</c>. Source: <c>/load/index
+/// data.loading_exclusion_card_list</c> (array of card_ids).
+/// </summary>
+public sealed class LoadingExclusionCardSeed
+{
+    [JsonPropertyName("card_id")] public long CardId { get; set; }
+}

SVSim.Bootstrap/Models/Seed/MaintenanceCardSeed.cs

@@ -0,0 +1,12 @@
+using System.Text.Json.Serialization;
+
+namespace SVSim.Bootstrap.Models.Seed;
+
+/// <summary>
+/// Mirrors one entry of <c>seeds/maintenance-cards.json</c>. Source: <c>/load/index
+/// data.maintenance_card_list</c> (array of card_ids; usually empty).
+/// </summary>
+public sealed class MaintenanceCardSeed
+{
+    [JsonPropertyName("card_id")] public long CardId { get; set; }
+}

SVSim.Bootstrap/Models/Seed/ReprintedCardSeed.cs

@@ -0,0 +1,12 @@
+using System.Text.Json.Serialization;
+
+namespace SVSim.Bootstrap.Models.Seed;
+
+/// <summary>
+/// Mirrors one entry of <c>seeds/reprinted-cards.json</c>. Source: <c>/load/index
+/// data.reprinted_base_card_ids</c> (dict or list of card_ids).
+/// </summary>
+public sealed class ReprintedCardSeed
+{
+    [JsonPropertyName("card_id")] public long CardId { get; set; }
+}

SVSim.Bootstrap/Models/Seed/SpotCardSeed.cs

@@ -0,0 +1,13 @@
+using System.Text.Json.Serialization;
+
+namespace SVSim.Bootstrap.Models.Seed;
+
+/// <summary>
+/// Mirrors one entry of <c>seeds/spot-cards.json</c>. Source: <c>/load/index data.spot_cards</c>
+/// — extractor reshapes the wire dict {card_id: cost} into a list of {card_id, cost} rows.
+/// </summary>
+public sealed class SpotCardSeed
+{
+    [JsonPropertyName("card_id")] public long CardId { get; set; }
+    [JsonPropertyName("cost")] public int Cost { get; set; }
+}

SVSim.Bootstrap/Models/Seed/UnlimitedRestrictionSeed.cs

@@ -0,0 +1,13 @@
+using System.Text.Json.Serialization;
+
+namespace SVSim.Bootstrap.Models.Seed;
+
+/// <summary>
+/// Mirrors one entry of <c>seeds/unlimited-restrictions.json</c>. Source: <c>/load/index
+/// data.unlimited_restricted_base_card_id_list</c> (dict {card_id: restriction_value}).
+/// </summary>
+public sealed class UnlimitedRestrictionSeed
+{
+    [JsonPropertyName("card_id")] public long CardId { get; set; }
+    [JsonPropertyName("restriction_value")] public int RestrictionValue { get; set; }
+}