fix: resolve JS-006 and JS-007 architecture violations

- Add loading: false to 5 components for JS-007 compliance
- Add try/catch to async init() functions for JS-006 compliance
- Remove noqa comments from company-edit, vendor-edit, user-edit

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

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

static/admin/js/vendor-product-create.js

@@ -20,6 +20,7 @@ function adminVendorProductCreate() {
         currentPage: 'vendor-products',
 
         // Loading states
+        loading: false,
         saving: false,
 
         // Tom Select instance