fix(agent-jobs): close maintenance jobs after decision

packages/backend/convex/agentJobs.ts

@@ -1540,6 +1540,12 @@ export const applyMaintenanceDecision = mutation({
     }
     if (!job.threadId) return { success: true };
     const now = Date.now();
+    await ctx.db.patch(args.jobId, {
+      workspaceStatus: 'stopped',
+      summary: args.summary,
+      completedAt: job.completedAt ?? now,
+      updatedAt: now,
+    });
     const outcome =
       args.decision === 'sync'
         ? 'sync_recommended'