feat: Streak-Reminder – In-App-Nudge + lokale Tages-Erinnerung

- streak.js: Zustand aus last_practice_at (safe/at_risk/broken/none)
- Feed: Loss-Aversion-Bar "X-Tage-Serie – nur noch Y Std heute!" wenn die Serie heute abläuft
- Profil-Streak-Zeile zeigt Status (heute gesichert ✓ / noch X Std)
- Lokale Tages-Erinnerung via @capacitor/local-notifications (kein APNs nötig),
  geplant bei Login, abgebrochen sobald heute geübt – nativ; web no-op

Hinweis: nativ erst nach 'npx cap sync ios' + Rebuild aktiv.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

package-lock.json

@@ -1,16 +1,17 @@
 {
-  "name": "language-app",
+  "name": "snakkimo",
   "version": "1.0.0",
   "lockfileVersion": 3,
   "requires": true,
   "packages": {
     "": {
-      "name": "language-app",
+      "name": "snakkimo",
       "version": "1.0.0",
       "dependencies": {
         "@capacitor/cli": "^8.4.0",
         "@capacitor/core": "^8.4.0",
         "@capacitor/ios": "^8.4.0",
+        "@capacitor/local-notifications": "^8.2.0",
         "canvas-confetti": "^1.9.4",
         "capacitor-secure-storage-plugin": "^0.13.0",
         "react": "^19.0.0",
@@ -367,6 +368,15 @@
         "@capacitor/core": "^8.4.0"
       }
     },
+    "node_modules/@capacitor/local-notifications": {
+      "version": "8.2.0",
+      "resolved": "https://registry.npmjs.org/@capacitor/local-notifications/-/local-notifications-8.2.0.tgz",
+      "integrity": "sha512-fvLY0w2w4MiX+DD4+Wv4DOwOLdzKZsMDwAcRv/Juudd+QbKbn69s6cM3xVqPwAiDqfnqsY4/S8xtQD6M73wY2A==",
+      "license": "MIT",
+      "peerDependencies": {
+        "@capacitor/core": ">=8.0.0"
+      }
+    },
     "node_modules/@esbuild/aix-ppc64": {
       "version": "0.25.12",
       "resolved": "https://registry.npmjs.org/@esbuild/aix-ppc64/-/aix-ppc64-0.25.12.tgz",