Final: Complete modernization - Option 1 deployment, unified persistence, migration scripts

- Implement Docker image-based deployment (Option 1)
  * Code immutable in image, no volume override
  * Eliminated init-data.sh manual step
  * Simplified deployment process

- Unified persistence in data/ folder
  * Moved nginx.conf and nginx-custom-domains.conf to data/
  * All runtime configs and data in single location
  * Clear separation: repo (source) vs data/ (runtime)

- Archive legacy features
  * Groups blueprint and templates removed
  * Legacy playlist routes redirected to content area
  * Organized in old_code_documentation/

- Added network migration support
  * New migrate_network.sh script for IP changes
  * Regenerates SSL certs for new IP
  * Updates database configuration
  * Tested workflow: clone → deploy → migrate

- Enhanced deploy.sh
  * Creates data directories
  * Copies nginx configs from repo to data/
  * Validates file existence before deployment
  * Prevents incomplete deployments

- Updated documentation
  * QUICK_DEPLOYMENT.md shows 4-step workflow
  * Complete deployment workflow documented
  * Migration procedures included

- Production ready deployment workflow:
  1. Clone & setup (.env configuration)
  2. Deploy (./deploy.sh)
  3. Migrate network (./migrate_network.sh if needed)
  4. Normal operations (docker compose restart)

deploy.sh

@@ -30,6 +30,38 @@ if [ ! -f "docker-compose.yml" ]; then
     exit 1
 fi
 
+# ============================================================================
+# INITIALIZATION: Create data directories and copy nginx configs
+# ============================================================================
+echo -e "${YELLOW}📁 Initializing data directories...${NC}"
+
+# Create necessary data directories
+mkdir -p data/instance
+mkdir -p data/uploads
+mkdir -p data/nginx-ssl
+mkdir -p data/nginx-logs
+mkdir -p data/certbot
+
+# Copy nginx configuration files from repo root to data folder
+if [ -f "nginx.conf" ]; then
+    cp nginx.conf data/nginx.conf
+    echo -e "  ${GREEN}✓${NC} nginx.conf copied to data/"
+else
+    echo -e "  ${RED}❌ nginx.conf not found in repo root!${NC}"
+    exit 1
+fi
+
+if [ -f "nginx-custom-domains.conf" ]; then
+    cp nginx-custom-domains.conf data/nginx-custom-domains.conf
+    echo -e "  ${GREEN}✓${NC} nginx-custom-domains.conf copied to data/"
+else
+    echo -e "  ${RED}❌ nginx-custom-domains.conf not found in repo root!${NC}"
+    exit 1
+fi
+
+echo -e "${GREEN}✅ Data directories initialized${NC}"
+echo ""
+
 # ============================================================================
 # CONFIGURATION VARIABLES
 # ============================================================================