refactor: migrate from better-sqlite3 to Prisma (#170)

* refactor: migrate from better-sqlite3 to Prisma

- Install Prisma dependencies and initialize with SQLite
- Create Prisma schema matching existing database structure
- Replace database.js with Prisma-based database service
- Update all API routes, tRPC routers, and WebSocket handler
- Convert TypeScript types to match Prisma schema
- Update build process to include Prisma migrations
- Remove better-sqlite3 dependency

All database operations now use Prisma while maintaining SQLite backend.

* fix: flatten server data in installed scripts API responses

- Transform Prisma nested server objects to flattened fields expected by frontend
- Update getAllInstalledScripts, getInstalledScriptsByServer, and getInstalledScriptById
- Server names should now display correctly in the installed scripts table
- Use nullish coalescing operators for better null handling

* fix: ensure DATABASE_URL is set in .env for Prisma during updates

- Add ensure_database_url() function to update.sh
- Function checks if .env exists and creates from .env.example if needed
- Automatically adds DATABASE_URL if not present
- Call function after restore_backup_files() in update flow
- Fixes Prisma client generation error during updates

update.sh

@@ -412,6 +412,36 @@ restore_backup_files() {
     fi
 }
 
+# Ensure DATABASE_URL is set in .env file for Prisma
+ensure_database_url() {
+    log "Ensuring DATABASE_URL is set in .env file..."
+    
+    # Check if .env file exists
+    if [ ! -f ".env" ]; then
+        log_warning ".env file not found, creating from .env.example..."
+        if [ -f ".env.example" ]; then
+            cp ".env.example" ".env"
+        else
+            log_error ".env.example not found, cannot create .env file"
+            return 1
+        fi
+    fi
+    
+    # Check if DATABASE_URL is already set
+    if grep -q "^DATABASE_URL=" .env; then
+        log "DATABASE_URL already exists in .env file"
+        return 0
+    fi
+    
+    # Add DATABASE_URL to .env file
+    log "Adding DATABASE_URL to .env file..."
+    echo "" >> .env
+    echo "# Database" >> .env
+    echo "DATABASE_URL=\"file:./data/database.sqlite\"" >> .env
+    
+    log_success "DATABASE_URL added to .env file"
+}
+
 # Check if systemd service exists
 check_service() {
     # systemctl status returns 0-3 if service exists (running, exited, failed, etc.)
@@ -607,6 +637,32 @@ install_and_build() {
     log_success "Dependencies installed successfully"
     rm -f "$npm_log"
     
+    # Generate Prisma client
+    log "Generating Prisma client..."
+    if ! npx prisma generate > "$npm_log" 2>&1; then
+        log_error "Failed to generate Prisma client"
+        log_error "Prisma generate output:"
+        cat "$npm_log" | while read -r line; do
+            log_error "PRISMA: $line"
+        done
+        rm -f "$npm_log"
+        return 1
+    fi
+    log_success "Prisma client generated successfully"
+    
+    # Run Prisma migrations
+    log "Running Prisma migrations..."
+    if ! npx prisma migrate deploy > "$npm_log" 2>&1; then
+        log_warning "Prisma migrations failed or no migrations to run"
+        log "Prisma migrate output:"
+        cat "$npm_log" | while read -r line; do
+            log "PRISMA: $line"
+        done
+    else
+        log_success "Prisma migrations completed successfully"
+    fi
+    rm -f "$npm_log"
+    
     log "Building application..."
     # Set NODE_ENV to production for build
     export NODE_ENV=production
@@ -838,6 +894,9 @@ main() {
     # Restore .env and data directory before building
     restore_backup_files
     
+    # Ensure DATABASE_URL is set for Prisma
+    ensure_database_url
+    
     # Install dependencies and build
     if ! install_and_build; then
         log_error "Install and build failed, rolling back..."