Add vendor-create.html template:
- Company dropdown with dynamic loading
- Vendor code and subdomain fields with auto-generation
- Name, description, and optional marketplace CSV URL fields
- Extends admin/base.html with proper layout
Add vendor-create.js:
- Uses centralized logger (vendorCreateLog)
- Alpine.js component for form handling
- Company loading from API
- Subdomain auto-generation from vendor name
- Form submission with validation
Route was already defined in admin_pages.py.
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Co-Authored-By: Claude <noreply@anthropic.com>