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/RulesConfiguration.tsx

@@ -5,8 +5,8 @@ import { RuleToggle } from './RuleToggle'
 interface RulesConfigurationProps {
   rules: NuzlockeRules
   onChange: (rules: NuzlockeRules) => void
-  onReset?: () => void
-  hiddenRules?: Set<keyof NuzlockeRules>
+  onReset?: (() => void) | undefined
+  hiddenRules?: Set<keyof NuzlockeRules> | undefined
 }
 
 export function RulesConfiguration({
@@ -19,12 +19,8 @@ export function RulesConfiguration({
     ? RULE_DEFINITIONS.filter((r) => !hiddenRules.has(r.key))
     : RULE_DEFINITIONS
   const coreRules = visibleRules.filter((r) => r.category === 'core')
-  const difficultyRules = visibleRules.filter(
-    (r) => r.category === 'difficulty'
-  )
-  const completionRules = visibleRules.filter(
-    (r) => r.category === 'completion'
-  )
+  const difficultyRules = visibleRules.filter((r) => r.category === 'difficulty')
+  const completionRules = visibleRules.filter((r) => r.category === 'completion')
 
   const handleRuleChange = (key: keyof NuzlockeRules, value: boolean) => {
     onChange({ ...rules, [key]: value })
@@ -60,9 +56,7 @@ export function RulesConfiguration({
 
       <div className="bg-white dark:bg-gray-800 rounded-lg shadow">
         <div className="px-4 py-3 border-b border-gray-200 dark:border-gray-700">
-          <h3 className="text-lg font-medium text-gray-900 dark:text-gray-100">
-            Core Rules
-          </h3>
+          <h3 className="text-lg font-medium text-gray-900 dark:text-gray-100">Core Rules</h3>
           <p className="text-sm text-gray-500 dark:text-gray-400">
             The fundamental rules of a Nuzlocke challenge
           </p>
@@ -105,9 +99,7 @@ export function RulesConfiguration({
       {completionRules.length > 0 && (
         <div className="bg-white dark:bg-gray-800 rounded-lg shadow">
           <div className="px-4 py-3 border-b border-gray-200 dark:border-gray-700">
-            <h3 className="text-lg font-medium text-gray-900 dark:text-gray-100">
-              Completion
-            </h3>
+            <h3 className="text-lg font-medium text-gray-900 dark:text-gray-100">Completion</h3>
             <p className="text-sm text-gray-500 dark:text-gray-400">
               When is the run considered complete
             </p>