Fix linting errors across backend and frontend

Backend: auto-fix and format all ruff issues, manually fix B904/B023/
SIM117/B007/E741/F841 errors, suppress B008 (FastAPI Depends) and F821
(SQLAlchemy forward refs) in config. Frontend: allow constant exports,
disable React compiler-specific rules (set-state-in-effect,
preserve-manual-memoization).

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

backend/src/app/api/routes.py

@@ -1,6 +1,17 @@
 from fastapi import APIRouter
 
-from app.api import bosses, encounters, evolutions, export, games, genlockes, health, pokemon, runs, stats
+from app.api import (
+    bosses,
+    encounters,
+    evolutions,
+    export,
+    games,
+    genlockes,
+    health,
+    pokemon,
+    runs,
+    stats,
+)
 
 api_router = APIRouter()
 api_router.include_router(health.router)