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Phase 3 shipped the AI rank battle bot pool as a hardcoded 8-entry list inlined in SVSim.EmulatedEntrypoint/Matching/BotRoster.cs — editing meant recompiling. Per PLAN.md 2026-06-02 item (d), move it to a Bootstrap importer so the roster lives in seeds/bot-roster.json and the DB. Shape mirrors PracticeOpponent end-to-end: - BotRosterEntry (SVSim.Database/Models) — PK = AiId via the Id passthrough pattern. DbSet<BotRosterEntry> BotRoster on SVSimDbContext. - AddBotRoster migration (DDL only, per migrations-are-DDL-only rule). - seeds/bot-roster.json — 8 rows preserving the current prod-verified cosmetic ids (sleeve 704141010 / emblem 400001100 / degree 120027 / field 5) and series-1 ai_ids from rm_ai_setting.csv (1111..1181). - BotRosterSeed POCO + BotRosterImporter (idempotent upsert keyed by AiId, leaves seed-missing rows intact). Wired into SVSim.Bootstrap/Program.cs next to PracticeOpponentImporter. - IGlobalsRepository.GetBotRoster() + impl. IBotRoster.Pick → PickAsync because BotRoster now depends on the transient IGlobalsRepository. RankBattleController awaits the new signature. The deterministic hash-on-ctx invariant (same ctx → same bot, so /ai_<fmt>/start retries pick the same opponent) is preserved. DI: AddSingleton<IBotRoster> → AddTransient (matches IGlobalsRepository's lifetime). Test fixture's SeedGlobalsAsync also runs the importer so RankBattleControllerTests + the rewritten BotRosterTests both see seeded rows. Tests: 931 → 936 passing. Existing 3 BotRosterTests reshaped for the DB backing + 1 new "throws on empty roster" guard; 4 new BotRosterImporterTests mirror PracticeOpponentImporterTests (round-trip / idempotent / seed-missing-row-intact / ai_id=0 skip). Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>