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/GameGrid.tsx

@@ -18,7 +18,7 @@ interface GameGridProps {
   games: Game[]
   selectedId: number | null
   onSelect: (game: Game) => void
-  runs?: NuzlockeRun[]
+  runs?: NuzlockeRun[] | undefined
 }
 
 export function GameGrid({ games, selectedId, onSelect, runs }: GameGridProps) {
@@ -27,38 +27,26 @@ export function GameGrid({ games, selectedId, onSelect, runs }: GameGridProps) {
   const [hideWithActiveRun, setHideWithActiveRun] = useState(false)
   const [hideCompleted, setHideCompleted] = useState(false)
 
-  const generations = useMemo(
-    () => [...new Set(games.map((g) => g.generation))].sort(),
-    [games]
-  )
+  const generations = useMemo(() => [...new Set(games.map((g) => g.generation))].sort(), [games])
 
-  const regions = useMemo(
-    () => [...new Set(games.map((g) => g.region))].sort(),
-    [games]
-  )
+  const regions = useMemo(() => [...new Set(games.map((g) => g.region))].sort(), [games])
 
   const activeRunGameIds = useMemo(() => {
     if (!runs) return new Set<number>()
-    return new Set(
-      runs.filter((r) => r.status === 'active').map((r) => r.gameId)
-    )
+    return new Set(runs.filter((r) => r.status === 'active').map((r) => r.gameId))
   }, [runs])
 
   const completedRunGameIds = useMemo(() => {
     if (!runs) return new Set<number>()
-    return new Set(
-      runs.filter((r) => r.status === 'completed').map((r) => r.gameId)
-    )
+    return new Set(runs.filter((r) => r.status === 'completed').map((r) => r.gameId))
   }, [runs])
 
   const filtered = useMemo(() => {
     let result = games
     if (filter) result = result.filter((g) => g.generation === filter)
     if (regionFilter) result = result.filter((g) => g.region === regionFilter)
-    if (hideWithActiveRun)
-      result = result.filter((g) => !activeRunGameIds.has(g.id))
-    if (hideCompleted)
-      result = result.filter((g) => !completedRunGameIds.has(g.id))
+    if (hideWithActiveRun) result = result.filter((g) => !activeRunGameIds.has(g.id))
+    if (hideCompleted) result = result.filter((g) => !completedRunGameIds.has(g.id))
     return result
   }, [
     games,
@@ -91,9 +79,7 @@ export function GameGrid({ games, selectedId, onSelect, runs }: GameGridProps) {
     <div className="space-y-6">
       <div className="space-y-3">
         <div className="flex flex-wrap items-center gap-2">
-          <span className="text-xs font-medium text-gray-500 dark:text-gray-400 mr-1">
-            Gen:
-          </span>
+          <span className="text-xs font-medium text-gray-500 dark:text-gray-400 mr-1">Gen:</span>
           <button
             type="button"
             onClick={() => setFilter(null)}
@@ -114,9 +100,7 @@ export function GameGrid({ games, selectedId, onSelect, runs }: GameGridProps) {
         </div>
 
         <div className="flex flex-wrap items-center gap-2">
-          <span className="text-xs font-medium text-gray-500 dark:text-gray-400 mr-1">
-            Region:
-          </span>
+          <span className="text-xs font-medium text-gray-500 dark:text-gray-400 mr-1">Region:</span>
           <button
             type="button"
             onClick={() => setRegionFilter(null)}