fix: Replace WorkManager with ForegroundService to eliminate excessive wakelocks

Replace MonitorWorker (CoroutineWorker) with MonitorService (ForegroundService)
to eliminate persistent ProcessorForegroundLck wakelock reported in Android Vitals.
Add BootCompletedReceiver for post-reboot auto-start.
Remove WorkManager dependency entirely.

app/src/main/AndroidManifest.xml

@@ -1,6 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
 <manifest xmlns:android="http://schemas.android.com/apk/res/android"
-    xmlns:tools="http://schemas.android.com/tools"
     package="eu.darken.capod">
 
     <uses-permission-sdk-23 android:name="android.permission.REQUEST_IGNORE_BATTERY_OPTIMIZATIONS" />
@@ -9,6 +8,8 @@
 
     <uses-permission android:name="android.permission.SYSTEM_ALERT_WINDOW" />
 
+    <uses-permission android:name="android.permission.RECEIVE_BOOT_COMPLETED" />
+    <uses-permission android:name="android.permission.FOREGROUND_SERVICE" />
     <uses-permission android:name="android.permission.FOREGROUND_SERVICE_CONNECTED_DEVICE" />
 
     <uses-permission android:name="android.permission.ACCESS_BACKGROUND_LOCATION" />
@@ -65,6 +66,14 @@
             </intent-filter>
         </receiver>
 
+        <receiver
+            android:name=".monitor.core.receiver.BootCompletedReceiver"
+            android:exported="true">
+            <intent-filter>
+                <action android:name="android.intent.action.BOOT_COMPLETED" />
+            </intent-filter>
+        </receiver>
+
         <receiver
             android:name=".monitor.core.receiver.BluetoothEventReceiver"
             android:enabled="true"
@@ -112,24 +121,10 @@
             android:name=".common.debug.recording.ui.RecorderActivity"
             android:theme="@style/AppThemeFloating" />
 
-        <!-- Worker stuff-->
         <service
-            android:name="androidx.work.impl.foreground.SystemForegroundService"
+            android:name=".monitor.core.worker.MonitorService"
             android:foregroundServiceType="connectedDevice"
-            tools:node="merge" />
-
-        <provider
-            android:name="androidx.startup.InitializationProvider"
-            android:authorities="${applicationId}.androidx-startup"
-            android:exported="false"
-            tools:node="merge">
-
-            <meta-data
-                android:name="androidx.work.WorkManagerInitializer"
-                android:value="androidx.startup"
-                tools:node="remove" />
-
-        </provider>
+            android:exported="false" />
     </application>
 
 </manifest>