fix(android): add missing GeofenceForegroundService declaration

Critical fix for automatic time tracking via geofence:

- Add service declaration to AndroidManifest.xml:
  com.f2fk.geofence_foreground_service.GeofenceForegroundService
- Add ProGuard keep rule to prevent service obfuscation
- Fixes error: "Unable to start service R0.d not found"

The geofence background service was being obfuscated by R8 and
couldn't be found by the Android system when trying to start it.

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

Author: sprobst76

CHANGELOG.md

@@ -14,6 +14,16 @@ und dieses Projekt folgt [Semantic Versioning](https://semver.org/lang/de/).
 
 ---
 
+## [0.1.0-beta.28] - 2026-01-14
+
+### Behoben
+- **Geofence Service nicht gefunden**: Kritischer Fix für automatische Zeiterfassung
+  - Service-Deklaration in AndroidManifest.xml hinzugefügt
+  - ProGuard-Regel hinzugefügt um Obfuscation des Services zu verhindern
+  - Fehler "Unable to start service R0.d not found" behoben
+
+---
+
 ## [0.1.0-beta.27] - 2026-01-13
 
 ### Hinzugefügt

android/app/proguard-rules.pro

@@ -18,3 +18,6 @@
 # Prevent stripping of generic type information
 -keep,allowobfuscation,allowshrinking class com.google.gson.reflect.TypeToken
 -keep,allowobfuscation,allowshrinking class * extends com.google.gson.reflect.TypeToken
+
+# Geofence Foreground Service - prevent obfuscation
+-keep class com.f2fk.geofence_foreground_service.** { *; }

android/app/src/main/AndroidManifest.xml

@@ -52,6 +52,13 @@
         <meta-data
             android:name="flutterEmbedding"
             android:value="2" />
+
+        <!-- Geofence Foreground Service for background location tracking -->
+        <service
+            android:name="com.f2fk.geofence_foreground_service.GeofenceForegroundService"
+            android:foregroundServiceType="location"
+            android:exported="false">
+        </service>
     </application>
     <!-- Required to query activities that can process text, see:
          https://developer.android.com/training/package-visibility and

pubspec.yaml

@@ -1,6 +1,6 @@
 name: time_tracker
 description: Zeiterfassung mit Geofence, Urlaub, Feiertagen & ICS-Sync
-version: 0.1.0-beta.27+27
+version: 0.1.0-beta.28+28
 publish_to: 'none'
 
 environment: