feat(web): Phase 3a — migrate CRA to Vite + make the app runnable

The frontend was a Create React App scaffold (deprecated) where App.tsx was
still the stock 'Learn React' boilerplate — the implemented login/register pages
and stores were never mounted (no router). This swaps to Vite/TS5, fixes the
broken API client, wires a real router + dashboard, and lands on a runnable app.

Tooling swap (CRA -> Vite):
* Dropped react-scripts, web-vitals, @types/jest; added vite 6 + @vitejs/plugin-react
  + vitest 3 + jsdom; bumped typescript 4.9 -> 5.6, @types/node 16 -> 22.
* New vite.config.ts (with dev-server /api proxy -> backend, no CORS in dev),
  tsconfig.json (target es2022, moduleResolution bundler, vite/client types),
  tsconfig.node.json, vite-env.d.ts, root index.html.
* .env / .env.example (VITE_API_URL + VITE_API_TARGET). Renamed index.tsx ->
  main.tsx (theme provider + CssBaseline). Deleted all CRA boilerplate
  (App.css, logo.svg, App.test.tsx, reportWebVitals.ts, react-app-env.d.ts,
  CRA index.html/logos/readme) + the orphaned empty web/src/ and mobile/ trees.
* node_modules 479MB -> 265MB; lockfile 695KB -> 198KB.

API client correctness (services/api.ts):
* Env var process.env.REACT_APP_* -> import.meta.env.VITE_*; dropped the
  hardcoded http://solaria:8001/api (now /api via the dev proxy).
* Fixed contract mismatches: getCurrentUser /auth/me -> /users/me;
  updateMedication PUT -> POST /:id; deleteMedication DELETE -> POST /:id/delete.
* Added refreshToken() (/auth/refresh) and server-side logout() (/auth/logout).
* Removed the /lab-results block (no backend route).
* 401 interceptor now attempts ONE silent refresh (deduped) before bouncing to
  /login, instead of hard-redirecting on every 401.
* CreateMedicationRequest type now matches the backend (required route +
  profile_id fields).

Router + dashboard:
* Real App.tsx with BrowserRouter: /login, /register (public), / (protected
  Dashboard), catch-all -> /.
* New Dashboard.tsx: MUI AppBar + welcome card, loads the current user on mount,
  logout button. The shell feature UIs get built into next.
* LoginPage/RegisterPage navigate to / (was /dashboard); store logout is now
  async; AuthTokens type includes refresh_token.
* Minimal MUI theme.ts.

Verified: npm run build clean (TS5 strict + Vite), dev server serves the app +
proxies /api to the backend, vitest runs. Solaria round-trip confirmed all
corrected endpoints (/users/me 200, /auth/refresh 200, /auth/logout 204,
medication create 200).

web/normogen-web/package.json

@@ -2,52 +2,37 @@
   "name": "normogen-web",
   "version": "0.1.0",
   "private": true,
+  "type": "module",
+  "scripts": {
+    "dev": "vite",
+    "build": "tsc -b && vite build",
+    "preview": "vite preview",
+    "test": "vitest run",
+    "test:watch": "vitest"
+  },
   "dependencies": {
     "@emotion/react": "^11.14.0",
     "@emotion/styled": "^11.14.1",
     "@mui/material": "^7.3.9",
     "@mui/x-charts": "^8.27.4",
-    "@testing-library/dom": "^10.4.1",
-    "@testing-library/jest-dom": "^6.9.1",
-    "@testing-library/react": "^16.3.2",
-    "@testing-library/user-event": "^13.5.0",
-    "@types/jest": "^27.5.2",
-    "@types/node": "^16.18.126",
-    "@types/react": "^19.2.14",
-    "@types/react-dom": "^19.2.3",
     "axios": "^1.13.6",
     "date-fns": "^4.1.0",
     "react": "^19.2.4",
     "react-dom": "^19.2.4",
     "react-router-dom": "^7.13.1",
-    "react-scripts": "5.0.1",
     "recharts": "^3.8.0",
-    "typescript": "^4.9.5",
-    "web-vitals": "^2.1.4",
     "zustand": "^5.0.11"
   },
-  "scripts": {
-    "start": "react-scripts start",
-    "build": "react-scripts build",
-    "test": "react-scripts test",
-    "eject": "react-scripts eject"
-  },
-  "eslintConfig": {
-    "extends": [
-      "react-app",
-      "react-app/jest"
-    ]
-  },
-  "browserslist": {
-    "production": [
-      ">0.2%",
-      "not dead",
-      "not op_mini all"
-    ],
-    "development": [
-      "last 1 chrome version",
-      "last 1 firefox version",
-      "last 1 safari version"
-    ]
+  "devDependencies": {
+    "@testing-library/jest-dom": "^6.9.1",
+    "@testing-library/react": "^16.3.2",
+    "@types/node": "^22.10.0",
+    "@types/react": "^19.2.14",
+    "@types/react-dom": "^19.2.3",
+    "@vitejs/plugin-react": "^4.3.4",
+    "jsdom": "^25.0.1",
+    "typescript": "^5.6.3",
+    "vite": "^6.0.3",
+    "vitest": "^3.0.0"
   }
 }