feat(mechanic-pwa): scaffold Vite+React+TS+Tailwind+shadcn+PWA+routing (Phase G G1-G5)

- Vite 8 + React 19 + TypeScript 6 project via create-vite react-ts template
- Tailwind v3.4 with shadcn-compatible cream palette (CSS vars)
- vite-plugin-pwa v1.3 with autoUpdate SW, manifest.webmanifest, 192+512 icons
- shadcn/ui components written manually (default style): button, card, input, label, sonner
- Zustand persist auth store, ky API client with Bearer token hooks
- React Router v7 routing with RequireAuth guard
- TanStack Query v5 + Toaster wired in main.tsx
- 5 stub pages: Login, Home, VehicleCard, InspectionEditor, InspectionReview
- Build: 293 KB JS / 9.4 KB CSS, clean zero-warning tsc+vite build

Co-Authored-By: claude-flow <ruv@ruv.net>

mechanic-pwa/frontend/eslint.config.js

@@ -0,0 +1,22 @@
+import js from '@eslint/js'
+import globals from 'globals'
+import reactHooks from 'eslint-plugin-react-hooks'
+import reactRefresh from 'eslint-plugin-react-refresh'
+import tseslint from 'typescript-eslint'
+import { defineConfig, globalIgnores } from 'eslint/config'
+
+export default defineConfig([
+  globalIgnores(['dist']),
+  {
+    files: ['**/*.{ts,tsx}'],
+    extends: [
+      js.configs.recommended,
+      tseslint.configs.recommended,
+      reactHooks.configs.flat.recommended,
+      reactRefresh.configs.vite,
+    ],
+    languageOptions: {
+      globals: globals.browser,
+    },
+  },
+])