Wave 1 (#1, #2): foreground timer service, background catch-up, alarms, native TTS, warning tone

android/app/src/main/AndroidManifest.xml

@@ -33,9 +33,22 @@
                 android:name="android.support.FILE_PROVIDER_PATHS"
                 android:resource="@xml/file_paths"></meta-data>
         </provider>
+
+        <!-- Ongoing focus timer (#1) -->
+        <service
+            android:name=".TimerService"
+            android:exported="false"
+            android:foregroundServiceType="specialUse">
+            <property
+                android:name="android.app.PROPERTY_SPECIAL_USE_FGS_SUBTYPE"
+                android:value="Ongoing focus timer keeping step countdown alive while the app is in background." />
+        </service>
     </application>
 
     <!-- Permissions -->
 
     <uses-permission android:name="android.permission.INTERNET" />
+    <uses-permission android:name="android.permission.FOREGROUND_SERVICE" />
+    <uses-permission android:name="android.permission.FOREGROUND_SERVICE_SPECIAL_USE" />
+    <uses-permission android:name="android.permission.POST_NOTIFICATIONS" />
 </manifest>