feat: add script to create default CMS content pages

Add automated script to generate platform default content pages:

Script (create_default_content_pages.py):
- Creates 7 platform default pages (vendor_id=NULL)
- Content: About, Contact, FAQ, Shipping, Returns, Privacy, Terms
- Comprehensive, production-ready content for each page
- Idempotent - safe to run multiple times (skips existing)
- SEO metadata included for all pages
- Proper navigation flags (footer/header visibility)

Makefile Integration:
- Add 'create-cms-defaults' command
- Integrate into 'db-setup' workflow
- Update help documentation with CMS commands
- Update both 'help' and 'help-db' sections

Workflow:
make db-setup now runs:
  migrate-up → init-prod → create-cms-defaults → seed-demo

This ensures all new developers get:
- Database schema (migrations)
- Admin user (init-prod)
- Default content pages (create-cms-defaults)
- Demo data (seed-demo)

All in one command: make db-setup

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>

Makefile

@@ -122,7 +122,7 @@ else
 	SEED_MODE=reset $(PYTHON) scripts/seed_demo.py
 endif
 
-db-setup: migrate-up init-prod seed-demo
+db-setup: migrate-up init-prod create-cms-defaults seed-demo
 	@echo "✅ Database setup complete!"
 	@echo "Run 'make dev' to start development server"
 
@@ -133,6 +133,12 @@ backup-db:
 	@echo "Creating database backup..."
 	@$(PYTHON) scripts/backup_database.py
 
+# CMS default content pages
+create-cms-defaults:
+	@echo "📄 Creating default CMS content pages..."
+	$(PYTHON) scripts/create_default_content_pages.py
+	@echo "✅ CMS defaults created"
+
 # =============================================================================
 # TESTING
 # =============================================================================
@@ -314,7 +320,8 @@ help:
 	@echo "  seed-demo            - Seed demo data (3 vendors)"
 	@echo "  seed-demo-minimal    - Seed minimal demo (1 vendor)"
 	@echo "  seed-demo-reset      - DELETE ALL and reseed"
-	@echo "  db-setup             - Full dev setup (migrate + init + seed)"
+	@echo "  create-cms-defaults  - Create default CMS content pages"
+	@echo "  db-setup             - Full dev setup (migrate + init + cms + seed)"
 	@echo "  backup-db            - Backup database"
 	@echo ""
 	@echo "=== TESTING ==="
@@ -367,15 +374,19 @@ help-db:
 	@echo "  seed-demo-minimal                      - Create 1 demo vendor only"
 	@echo "  seed-demo-reset                        - DELETE ALL data and reseed (DANGEROUS!)"
 	@echo ""
+	@echo "CMS CONTENT:"
+	@echo "  create-cms-defaults                    - Create default content pages (about, faq, etc.)"
+	@echo ""
 	@echo "WORKFLOWS:"
-	@echo "  db-setup                               - Complete dev setup (migrate + init + seed)"
+	@echo "  db-setup                               - Complete dev setup (migrate + init + cms + seed)"
 	@echo "  db-reset                               - Nuclear option: rollback + reset + reseed"
 	@echo ""
 	@echo "TYPICAL FIRST-TIME SETUP:"
 	@echo "  1. make migrate-up         # Apply migrations"
 	@echo "  2. make init-prod          # Create admin user"
-	@echo "  3. make seed-demo          # Add demo data"
-	@echo "  4. make dev                # Start developing"
+	@echo "  3. make create-cms-defaults # Create CMS pages"
+	@echo "  4. make seed-demo          # Add demo data"
+	@echo "  5. make dev                # Start developing"
 	@echo ""
 	@echo "PRODUCTION SETUP:"
 	@echo "  1. Set ENV=production or ENVIRONMENT=production"