Harden read-only thread handling and refresh Android releases

src/app/api/device-heartbeat/route.ts

@@ -12,6 +12,19 @@ export async function POST(request: NextRequest) {
     status?: "online" | "abnormal" | "offline";
     quota5h?: number;
     quota7d?: number;
+    capabilities?: {
+      gui?: {
+        connected?: boolean;
+        lastSeenAt?: string;
+        lastActiveProjectId?: string;
+      };
+      cli?: {
+        connected?: boolean;
+        lastSeenAt?: string;
+        lastActiveProjectId?: string;
+      };
+    };
+    preferredExecutionMode?: "gui" | "cli";
     projects?: string[];
     projectCandidates?: Array<{
       folderName?: string;
@@ -47,6 +60,8 @@ export async function POST(request: NextRequest) {
     status: body.status,
     quota5h: body.quota5h ?? 0,
     quota7d: body.quota7d ?? 0,
+    capabilities: body.capabilities,
+    preferredExecutionMode: body.preferredExecutionMode,
     projects: body.projects,
     projectCandidates: (body.projectCandidates ?? []).filter(
       (candidate) =>