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/pages/RunList.tsx

@@ -3,8 +3,7 @@ import { useRuns } from '../hooks/useRuns'
 import type { RunStatus } from '../types'
 
 const statusStyles: Record<RunStatus, string> = {
-  active:
-    'bg-green-100 text-green-800 dark:bg-green-900/40 dark:text-green-300',
+  active: 'bg-green-100 text-green-800 dark:bg-green-900/40 dark:text-green-300',
   completed: 'bg-blue-100 text-blue-800 dark:bg-blue-900/40 dark:text-blue-300',
   failed: 'bg-red-100 text-red-800 dark:bg-red-900/40 dark:text-red-300',
 }
@@ -15,9 +14,7 @@ export function RunList() {
   return (
     <div className="max-w-4xl mx-auto p-8">
       <div className="flex items-center justify-between mb-6">
-        <h1 className="text-3xl font-bold text-gray-900 dark:text-gray-100">
-          Your Runs
-        </h1>
+        <h1 className="text-3xl font-bold text-gray-900 dark:text-gray-100">Your Runs</h1>
         <Link
           to="/runs/new"
           className="px-4 py-2 bg-blue-600 text-white rounded-lg font-medium hover:bg-blue-700 focus:outline-none focus:ring-2 focus:ring-blue-500 focus:ring-offset-2 transition-colors"