feat: automatically attach recent dev server logs to failed start responses to eliminate AI telemetry gaps

vibn-frontend/app/api/mcp/route.ts

@@ -5241,11 +5241,19 @@ async function toolDevServerStart(
     }
 
     if (!isHealthy) {
+      let recentLogs = "";
+      try {
+        recentLogs = await tailDevServerLog(project.id, row.id, 50);
+      } catch (logErr: any) {
+        recentLogs = `Failed to retrieve logs: ${logErr.message || String(logErr)}`;
+      }
+
       return NextResponse.json({
         result: {
           ok: false,
           error:
             "Server failed to start or bind to port within the timeout window.",
+          logs: recentLogs,
           healthCheck: {
             status: 500,
             output: failureOutput,