Fix buildz.ai workspace loading error

apps/sim/SETUP.md

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+# Buildz.ai Setup Guide
+
+This guide will help you set up and run the buildz.ai application locally.
+
+## Prerequisites
+
+- Ubuntu 24.04+ (or similar Linux distribution)
+- PostgreSQL 17+
+- Bun runtime (v1.2+)
+- Node.js 20+ (if not using Bun)
+
+## Quick Start
+
+1. **Run the setup script:**
+   ```bash
+   ./start.sh
+   ```
+
+   This will:
+   - Install PostgreSQL if not present
+   - Create the database and user
+   - Install the pgvector extension
+   - Install dependencies
+   - Run database migrations
+   - Start both the main app and socket server
+
+## Manual Setup
+
+If you prefer to set up manually:
+
+### 1. Install PostgreSQL and pgvector
+
+```bash
+sudo apt update
+sudo apt install -y postgresql postgresql-contrib postgresql-17-pgvector
+sudo service postgresql start
+```
+
+### 2. Create Database and User
+
+```bash
+sudo -u postgres psql -c "CREATE DATABASE simstudio;"
+sudo -u postgres psql -c "ALTER USER postgres PASSWORD 'postgres';"
+sudo -u postgres psql -c "GRANT ALL PRIVILEGES ON DATABASE simstudio TO postgres;"
+sudo -u postgres psql -d simstudio -c "CREATE EXTENSION IF NOT EXISTS vector;"
+```
+
+### 3. Install Bun
+
+```bash
+curl -fsSL https://bun.sh/install | bash
+source ~/.bashrc
+```
+
+### 4. Install Dependencies
+
+```bash
+bun install
+```
+
+### 5. Set Environment Variables
+
+```bash
+export DATABASE_URL="postgresql://postgres:postgres@localhost:5432/simstudio"
+export BETTER_AUTH_URL="http://localhost:3000"
+export BETTER_AUTH_SECRET="your_auth_secret_here_32_chars_minimum"
+export ENCRYPTION_KEY="your_encryption_key_here_32_chars_minimum"
+export INTERNAL_API_SECRET="your_internal_api_secret_here_32_chars_minimum"
+export NEXT_PUBLIC_APP_URL="http://localhost:3000"
+export NEXT_PUBLIC_SOCKET_URL="http://localhost:3002"
+```
+
+### 6. Run Database Migrations
+
+```bash
+bun run db:push
+```
+
+### 7. Start the Application
+
+**Terminal 1 - Main Application:**
+```bash
+bun run dev
+```
+
+**Terminal 2 - Socket Server:**
+```bash
+bun run dev:sockets
+```
+
+## Accessing the Application
+
+- **Main Application:** http://localhost:3000
+- **Socket Server Health:** http://localhost:3002/health
+- **API Endpoints:** http://localhost:3000/api/*
+
+## Troubleshooting
+
+### Database Connection Issues
+
+1. Check if PostgreSQL is running:
+   ```bash
+   sudo service postgresql status
+   ```
+
+2. Test database connection:
+   ```bash
+   psql -h localhost -U postgres -d simstudio -c "SELECT 1;"
+   ```
+
+### Port Already in Use
+
+If ports 3000 or 3002 are already in use:
+
+1. Find the process using the port:
+   ```bash
+   lsof -i :3000
+   lsof -i :3002
+   ```
+
+2. Kill the process or change the ports in your environment variables
+
+### Environment Variables Not Loading
+
+Make sure to export the environment variables in the same terminal session where you're running the application, or use the `.env.local` file.
+
+## Production Deployment
+
+For production deployment, use the `.env.production` file and update the following:
+
+1. **Database URL:** Point to your production PostgreSQL instance
+2. **Authentication Secrets:** Generate secure random strings
+3. **OAuth Credentials:** Configure with your actual OAuth app credentials
+4. **Email Configuration:** Set up your email service (Resend, etc.)
+5. **Domain URLs:** Update to your production domain
+
+## API Endpoints
+
+- `GET /api/workspaces` - List user workspaces
+- `POST /api/workspaces` - Create new workspace
+- `GET /api/auth/socket-token` - Get socket authentication token
+- `GET /health` - Socket server health check
+
+## Socket Events
+
+The socket server supports real-time collaboration features:
+
+- `join-workflow` - Join a workflow room
+- `leave-workflow` - Leave current workflow room
+- `workflow-operation` - Real-time workflow updates
+- `subblock-update` - Real-time subblock updates
+- `cursor-update` - Real-time cursor positions
+- `presence-update` - User presence information
+
+## Support
+
+If you encounter any issues, check the logs in the terminal where the services are running. The application uses structured logging with different levels (DEBUG, INFO, WARN, ERROR).

apps/sim/start.sh

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+#!/bin/bash
+
+# Buildz.ai Startup Script
+# This script sets up the environment and starts the application
+
+echo "🚀 Starting buildz.ai application..."
+
+# Set environment variables
+export DATABASE_URL="postgresql://postgres:postgres@localhost:5432/simstudio"
+export BETTER_AUTH_URL="http://localhost:3000"
+export BETTER_AUTH_SECRET="your_auth_secret_here_32_chars_minimum"
+export ENCRYPTION_KEY="your_encryption_key_here_32_chars_minimum"
+export INTERNAL_API_SECRET="your_internal_api_secret_here_32_chars_minimum"
+export NEXT_PUBLIC_APP_URL="http://localhost:3000"
+export NEXT_PUBLIC_SOCKET_URL="http://localhost:3002"
+export NODE_ENV="development"
+export LOG_LEVEL="DEBUG"
+
+# Check if PostgreSQL is running
+if ! pg_isready -h localhost -p 5432 > /dev/null 2>&1; then
+    echo "❌ PostgreSQL is not running. Starting PostgreSQL..."
+    sudo service postgresql start
+    sleep 2
+fi
+
+# Check if database exists
+if ! psql -h localhost -U postgres -d simstudio -c "SELECT 1;" > /dev/null 2>&1; then
+    echo "❌ Database 'simstudio' does not exist. Creating..."
+    sudo -u postgres createdb simstudio
+    sudo -u postgres psql -d simstudio -c "CREATE EXTENSION IF NOT EXISTS vector;"
+fi
+
+# Install dependencies if needed
+if [ ! -d "node_modules" ]; then
+    echo "📦 Installing dependencies..."
+    bun install
+fi
+
+# Run database migrations
+echo "🗄️ Running database migrations..."
+bun run db:push
+
+# Start the application
+echo "🎯 Starting application services..."
+
+# Start main application in background
+bun run dev &
+MAIN_PID=$!
+
+# Start socket server in background
+bun run dev:sockets &
+SOCKET_PID=$!
+
+echo "✅ Application started!"
+echo "🌐 Main app: http://localhost:3000"
+echo "🔌 Socket server: http://localhost:3002"
+echo "📊 Health check: http://localhost:3002/health"
+echo ""
+echo "Press Ctrl+C to stop all services"
+
+# Wait for interrupt
+trap "echo '🛑 Stopping services...'; kill $MAIN_PID $SOCKET_PID; exit" INT
+wait