Add genlocke admin panel with CRUD endpoints and UI

Backend: PATCH/DELETE genlocke, POST/DELETE legs with order
re-numbering. Frontend: admin list page with status filter,
detail page with inline editing, legs table, and stats display.

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

backend/src/app/schemas/genlocke.py

@@ -11,6 +11,15 @@ class GenlockeCreate(CamelModel):
     nuzlocke_rules: dict = {}
 
 
+class GenlockeUpdate(CamelModel):
+    name: str | None = None
+    status: str | None = None
+
+
+class AddLegRequest(CamelModel):
+    game_id: int
+
+
 class GenlockeLegResponse(CamelModel):
     id: int
     genlocke_id: int