fix(frontend): resolve app-wide 'Oops' crash + PWA middleware interception

Root cause (found via Playwright browser probe — curl could not detect client-side
hydration errors):

1. ROOT-LAYOUT INTL CRASH (the 'Oops' on every page incl /login):
   app/layout.tsx renders global client components (PwaInstallPrompt → useTranslations,
   Toaster, Sonner) as siblings of {children} inside <Providers>, but only each
   route-group layout wrapped its own children in NextIntlClientProvider. So those
   global components mounted with NO intl context → 'No intl context found' → React
   hydration crash → global-error 'Oops'. Fix: wrap the root body in
   NextIntlClientProvider via getMessages() (RootLayout now async). Nested providers
   stay valid (next-intl supports nesting).

2. PWA MIDDLEWARE INTERCEPTION (manifest.json syntax error + stale cache):
   middleware matcher did not exclude /manifest.json or /sw.js, so unauthenticated
   browsers got 307→/login (HTML) for both. Browser parsed HTML as JSON
   ('manifest.json:1 Syntax error') and an HTML/old service worker kept serving
   stale bundles ('website hasn't changed' after redeploys). Fix: exclude
   manifest.json, sw.js, icons, offline from the matcher.

3. SERVICE-WORKER STALE CACHE: bump CACHE_NAME v1→v2 so the activate handler purges
   old cached bundles from clients that loaded the broken build.

Also adds scripts/debug/dashboard-probe.mjs — a Playwright probe that logs in and
captures real client-side console/network errors + screenshot.

scripts/debug/.gitignore

@@ -0,0 +1,4 @@
+# Debug probe deps — installed on demand via `npm install playwright`
+node_modules/
+package-lock.json
+*.png

scripts/debug/dashboard-probe.mjs

@@ -0,0 +1,54 @@
+// Headless-browser probe: logs in and captures the REAL client-side error on /dashboard.
+// Run via the official Playwright Docker image (no local Node needed):
+//   docker run --rm --network host -v "$PWD/scripts/debug:/work" -w /work \
+//     mcr.microsoft.com/playwright:v1.49.0-jammy \
+//     sh -c "npm i playwright@1.49.0 -s && node dashboard-probe.mjs"
+//
+// Captures: console messages, page errors (un-minified via sourcemaps if present),
+// failed requests, and a screenshot.
+
+import { chromium } from "playwright"
+
+const BASE = process.env.BASE_URL || "http://192.168.188.119:3000"
+const EMAIL = process.env.LOGIN_EMAIL || "admin@test.de"
+const PASSWORD = process.env.LOGIN_PASSWORD || "test123"
+
+const browser = await chromium.launch()
+const ctx = await browser.newContext({ ignoreHTTPSErrors: true })
+const page = await ctx.newPage()
+
+const log = []
+page.on("console", (m) => log.push(`[console.${m.type()}] ${m.text()}`))
+page.on("pageerror", (e) => log.push(`[pageerror] ${e.stack || e.message}`))
+page.on("requestfailed", (r) =>
+  log.push(`[requestfailed] ${r.method()} ${r.url()} — ${r.failure()?.errorText}`)
+)
+page.on("response", (r) => {
+  if (r.status() >= 400) log.push(`[http ${r.status()}] ${r.url()}`)
+})
+
+try {
+  console.log(`==> GET ${BASE}/login`)
+  await page.goto(`${BASE}/login`, { waitUntil: "networkidle", timeout: 20000 })
+
+  await page.fill('input[type="email"], input[name="email"], #email', EMAIL)
+  await page.fill('input[type="password"], input[name="password"], #password', PASSWORD)
+  await page.click('button[type="submit"]')
+
+  // Wait for navigation to settle on the dashboard (or wherever it lands)
+  await page.waitForTimeout(5000)
+  console.log(`==> landed on: ${page.url()}`)
+
+  // Force-navigate to dashboard to reproduce the crash deterministically
+  await page.goto(`${BASE}/dashboard`, { waitUntil: "networkidle", timeout: 20000 })
+  await page.waitForTimeout(3000)
+
+  await page.screenshot({ path: "dashboard-probe.png", fullPage: true })
+  console.log("==> screenshot saved: dashboard-probe.png")
+} catch (e) {
+  console.log(`[probe-error] ${e.message}`)
+} finally {
+  console.log("\n===== CAPTURED BROWSER EVENTS =====")
+  console.log(log.join("\n") || "(none)")
+  await browser.close()
+}

scripts/debug/package.json

@@ -0,0 +1,15 @@
+{
+  "name": "debug",
+  "version": "1.0.0",
+  "description": "",
+  "main": "index.js",
+  "scripts": {
+    "test": "echo \"Error: no test specified\" && exit 1"
+  },
+  "keywords": [],
+  "author": "",
+  "license": "ISC",
+  "dependencies": {
+    "playwright": "^1.60.0"
+  }
+}