Add genlocke list and detail pages

Add GET /genlockes and GET /genlockes/{id} endpoints with aggregate
encounter/death stats per leg, and a frontend list page at /genlockes
plus a detail page at /genlockes/:genlockeId showing progress timeline,
cumulative stats, configuration, retired families, and quick actions.
Update nav link to point to the list page instead of /genlockes/new.

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

backend/src/app/schemas/genlocke.py

@@ -17,6 +17,7 @@ class GenlockeLegResponse(CamelModel):
     game_id: int
     run_id: int | None = None
     leg_order: int
+    retired_pokemon_ids: list[int] | None = None
     game: GameResponse
 
 
@@ -28,3 +29,52 @@ class GenlockeResponse(CamelModel):
     nuzlocke_rules: dict
     created_at: datetime
     legs: list[GenlockeLegResponse] = []
+
+
+# --- List / Detail schemas ---
+
+
+class RetiredPokemonResponse(CamelModel):
+    id: int
+    name: str
+    sprite_url: str | None = None
+
+
+class GenlockeLegDetailResponse(CamelModel):
+    id: int
+    leg_order: int
+    game: GameResponse
+    run_id: int | None = None
+    run_status: str | None = None
+    encounter_count: int = 0
+    death_count: int = 0
+    retired_pokemon_ids: list[int] | None = None
+
+
+class GenlockeStatsResponse(CamelModel):
+    total_encounters: int
+    total_deaths: int
+    legs_completed: int
+    total_legs: int
+
+
+class GenlockeListItem(CamelModel):
+    id: int
+    name: str
+    status: str
+    created_at: datetime
+    total_legs: int
+    completed_legs: int
+    current_leg_order: int | None = None
+
+
+class GenlockeDetailResponse(CamelModel):
+    id: int
+    name: str
+    status: str
+    genlocke_rules: dict
+    nuzlocke_rules: dict
+    created_at: datetime
+    legs: list[GenlockeLegDetailResponse] = []
+    stats: GenlockeStatsResponse
+    retired_pokemon: dict[int, RetiredPokemonResponse] = {}