Add f7push v0.1: FCM device registry and push API for F7cloud.

Portable occ-based config, OCS endpoints for APK registration, notification relay, and server-side push dispatch.

lib/Controller/ConfigApiController.php

@@ -0,0 +1,34 @@
+<?php
+
+declare(strict_types=1);
+
+namespace OCA\F7Push\Controller;
+
+use OCA\F7Push\Service\ConfigService;
+use OCP\AppFramework\Http;
+use OCP\AppFramework\Http\Attribute\NoAdminRequired;
+use OCP\AppFramework\Http\Attribute\NoCSRFRequired;
+use OCP\AppFramework\Http\DataResponse;
+use OCP\AppFramework\OCSController;
+use OCP\IRequest;
+
+class ConfigApiController extends OCSController {
+	public function __construct(
+		string $appName,
+		IRequest $request,
+		private ConfigService $config,
+	) {
+		parent::__construct($appName, $request);
+	}
+
+	/** Public status for mobile clients (no secrets). */
+	#[NoAdminRequired]
+	#[NoCSRFRequired]
+	public function status(): DataResponse {
+		return new DataResponse([
+			'enabled' => $this->config->isEnabled(),
+			'firebaseConfigured' => $this->config->isFirebaseConfigured(),
+			'defaultClickUrl' => $this->config->getDefaultClickUrl(),
+		]);
+	}
+}