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/user-create.js

@@ -10,6 +10,7 @@ function adminUserCreate() {
 
         // User create page specific state
         currentPage: 'user-create',
+        loading: false,
         formData: {
             username: '',
             email: '',