Align repo config with global development standards

- Add missing tsconfig strictness flags (noUncheckedIndexedAccess,
  exactOptionalPropertyTypes, noImplicitOverride,
  noPropertyAccessFromIndexSignature) and fix all resulting type errors
- Replace ESLint/Prettier with oxlint 1.48.0 and oxfmt 0.33.0
- Pin all frontend and backend dependencies to exact versions
- Pin GitHub Actions to SHA hashes with persist-credentials: false
- Fix CI Python version mismatch (3.12 -> 3.14) and ruff target-version
- Add vitest 4.0.18 with jsdom environment for frontend testing
- Add ty 0.0.17 for Python type checking (non-blocking in CI)
- Add actionlint and zizmor CI job for workflow linting and security audit
- Add Dependabot config for npm, pip, and github-actions
- Update CLAUDE.md and pre-commit hooks to reflect new tooling
- Ignore Claude Code sandbox artifacts in gitignore

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

frontend/src/components/admin/GameFormModal.tsx

@@ -34,9 +34,7 @@ export function GameFormModal({
   const [generation, setGeneration] = useState(String(game?.generation ?? ''))
   const [region, setRegion] = useState(game?.region ?? '')
   const [boxArtUrl, setBoxArtUrl] = useState(game?.boxArtUrl ?? '')
-  const [releaseYear, setReleaseYear] = useState(
-    game?.releaseYear ? String(game.releaseYear) : ''
-  )
+  const [releaseYear, setReleaseYear] = useState(game?.releaseYear ? String(game.releaseYear) : '')
   const [autoSlug, setAutoSlug] = useState(!game)
 
   useEffect(() => {
@@ -65,10 +63,7 @@ export function GameFormModal({
       isDeleting={isDeleting}
       headerExtra={
         detailUrl ? (
-          <Link
-            to={detailUrl}
-            className="text-sm text-blue-600 dark:text-blue-400 hover:underline"
-          >
+          <Link to={detailUrl} className="text-sm text-blue-600 dark:text-blue-400 hover:underline">
             View Routes & Bosses
           </Link>
         ) : undefined