chore: restore AndroidManifest/Info.plist changes + resolve stash conflicts

Merges in-progress manifest/plist changes (stashed before merge).
Resolves trivial comment conflicts in api_endpoints.dart and auth_service.dart —
both retained backend.eventifyplus.com URL and Google OAuth serverClientId.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

ios/Runner/Info.plist

@@ -47,5 +47,18 @@
 		<true/>
 		<key>UIStatusBarHidden</key>
 		<false/>
+		<key>GIDClientID</key>
+		<string>639347358523-1siq78p4vntem3dtr067ajdhqsv9a2jd.apps.googleusercontent.com</string>
+		<key>CFBundleURLTypes</key>
+		<array>
+			<dict>
+				<key>CFBundleTypeRole</key>
+				<string>Editor</string>
+				<key>CFBundleURLSchemes</key>
+				<array>
+					<string>com.googleusercontent.apps.639347358523-1siq78p4vntem3dtr067ajdhqsv9a2jd</string>
+				</array>
+			</dict>
+		</array>
 	</dict>
 </plist>