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/api/encounters.ts

@@ -14,10 +14,7 @@ export function createEncounter(
   return api.post(`/runs/${runId}/encounters`, data)
 }
 
-export function updateEncounter(
-  id: number,
-  data: UpdateEncounterInput
-): Promise<EncounterDetail> {
+export function updateEncounter(id: number, data: UpdateEncounterInput): Promise<EncounterDetail> {
   return api.patch(`/encounters/${id}`, data)
 }
 
@@ -25,10 +22,7 @@ export function deleteEncounter(id: number): Promise<void> {
   return api.del(`/encounters/${id}`)
 }
 
-export function fetchEvolutions(
-  pokemonId: number,
-  region?: string
-): Promise<Evolution[]> {
+export function fetchEvolutions(pokemonId: number, region?: string): Promise<Evolution[]> {
   const params = region ? `?region=${encodeURIComponent(region)}` : ''
   return api.get(`/pokemon/${pokemonId}/evolutions${params}`)
 }