fix: retire legacy Firebase session tracking endpoint

Returns 410 Gone instead of crashing with adminDb.collection errors.
Was flooding logs with TypeError on every call from the old Cursor extension.

Co-authored-by: Cursor <cursoragent@cursor.com>

app/api/sessions/track/route.ts

@@ -1,112 +1,11 @@
 import { NextResponse } from 'next/server';
-import { adminDb } from '@/lib/firebase/admin';
-import { FieldValue, Timestamp } from 'firebase-admin/firestore';
 
-export async function POST(request: Request) {
+// This endpoint was part of the legacy Cursor extension + Firebase integration.
-  try {
+// Firebase has been fully removed — return 410 Gone so callers know to stop.
-    const body = await request.json();
+export async function POST() {
-    const { apiKey, sessionData } = body;
-
-    if (!apiKey) {
   return NextResponse.json(
-        { error: 'API key is required' },
+    { error: 'This endpoint is no longer active. Session tracking has been deprecated.' },
-        { status: 401 }
+    { status: 410 },
   );
-    }
-
-    // Verify API key and get userId
-    const keyDoc = await adminDb.collection('apiKeys').doc(apiKey).get();
-    
-    if (!keyDoc.exists || !keyDoc.data()?.isActive) {
-      return NextResponse.json(
-        { error: 'Invalid or inactive API key' },
-        { status: 401 }
-      );
-    }
-
-    const userId = keyDoc.data()!.userId;
-    
-    if (!userId) {
-      return NextResponse.json(
-        { error: 'User not found for API key' },
-        { status: 401 }
-      );
-    }
-
-    // Update last used timestamp
-    await keyDoc.ref.update({
-      lastUsed: FieldValue.serverTimestamp(),
-    });
-
-    // Check if workspace has an associated project
-    let projectId = sessionData.projectId || null;
-    let needsProjectAssociation = false;
-    
-    if (!projectId && sessionData.workspacePath) {
-      // Try to find a project with this workspace path
-      const projectsSnapshot = await adminDb
-        .collection('projects')
-        .where('userId', '==', userId)
-        .where('workspacePath', '==', sessionData.workspacePath)
-        .limit(1)
-        .get();
-      
-      if (!projectsSnapshot.empty) {
-        // Found a matching project, auto-associate
-        projectId = projectsSnapshot.docs[0].id;
-        console.log(`✅ Auto-associated session with project: ${projectId}`);
-      } else {
-        // No matching project found, flag for user action
-        needsProjectAssociation = true;
-        console.log(`⚠️ New workspace detected: ${sessionData.workspacePath}`);
-      }
-    }
-
-    // Create session document
-    const sessionRef = adminDb.collection('sessions').doc();
-    await sessionRef.set({
-      id: sessionRef.id,
-      userId,
-      projectId,
-      
-      // Session data
-      startTime: Timestamp.fromMillis(new Date(sessionData.startTime).getTime()),
-      endTime: sessionData.endTime ? Timestamp.fromMillis(new Date(sessionData.endTime).getTime()) : null,
-      duration: sessionData.duration || null,
-      
-      // Project context
-      workspacePath: sessionData.workspacePath || null,
-      workspaceName: sessionData.workspacePath ? sessionData.workspacePath.split('/').pop() : null,
-      needsProjectAssociation,
-      
-      // AI usage
-      model: sessionData.model || 'unknown',
-      tokensUsed: sessionData.tokensUsed || 0,
-      cost: sessionData.cost || 0,
-      
-      // Context
-      filesModified: sessionData.filesModified || [],
-      conversationSummary: sessionData.conversationSummary || null,
-      conversation: sessionData.conversation || [],
-      messageCount: sessionData.conversation?.length || 0,
-      
-      createdAt: FieldValue.serverTimestamp(),
-    });
-
-    return NextResponse.json({
-      success: true,
-      sessionId: sessionRef.id,
-      message: 'Session tracked successfully',
-    });
-  } catch (error) {
-    console.error('Error tracking session:', error);
-    return NextResponse.json(
-      {
-        error: 'Failed to track session',
-        details: error instanceof Error ? error.message : String(error),
-      },
-      { status: 500 }
-    );
-  }
 }