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/schemas/__init__.py

@@ -14,7 +14,6 @@ from app.schemas.encounter import (
     EncounterResponse,
     EncounterUpdate,
 )
-from app.schemas.genlocke import GenlockeCreate, GenlockeResponse, GenlockeLegResponse
 from app.schemas.game import (
     GameCreate,
     GameDetailResponse,
@@ -25,6 +24,7 @@ from app.schemas.game import (
     RouteResponse,
     RouteUpdate,
 )
+from app.schemas.genlocke import GenlockeCreate, GenlockeLegResponse, GenlockeResponse
 from app.schemas.pokemon import (
     BulkImportItem,
     BulkImportResult,
@@ -37,7 +37,13 @@ from app.schemas.pokemon import (
     RouteEncounterResponse,
     RouteEncounterUpdate,
 )
-from app.schemas.run import RunCreate, RunDetailResponse, RunGenlockeContext, RunResponse, RunUpdate
+from app.schemas.run import (
+    RunCreate,
+    RunDetailResponse,
+    RunGenlockeContext,
+    RunResponse,
+    RunUpdate,
+)
 
 __all__ = [
     "BossBattleCreate",