fix(js): replace console.log with centralized logger (JS-002)

Convert direct console.log/error/warn calls to use centralized logger:
- imports.js: 13 violations fixed using adminImportsLog
- vendor-themes.js: 5 violations fixed using vendorThemesLog
- code-quality-dashboard.js: 2 violations fixed using codeQualityLog
- code-quality-violations.js: 1 violation fixed using codeQualityViolationsLog
- settings.js: 1 violation fixed using settingsLog

All files now use window.LogConfig.loggers.* for consistent logging.

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

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

static/admin/js/vendor-themes.js

@@ -3,10 +3,13 @@
  * Admin vendor themes selection page
  */
 
-console.log('[ADMIN VENDOR THEMES] Loading...');
+// ✅ Use centralized logger
+const vendorThemesLog = window.LogConfig.loggers.vendorTheme;
+
+vendorThemesLog.info('Loading...');
 
 function adminVendorThemes() {
-    console.log('[ADMIN VENDOR THEMES] adminVendorThemes() called');
+    vendorThemesLog.debug('adminVendorThemes() called');
 
     return {
         // Inherit base layout state
@@ -44,9 +47,9 @@ function adminVendorThemes() {
             try {
                 const response = await apiClient.get('/admin/vendors?limit=1000');
                 this.vendors = response.vendors || [];
-                console.log('[ADMIN VENDOR THEMES] Loaded vendors:', this.vendors.length);
+                vendorThemesLog.debug('Loaded vendors:', this.vendors.length);
             } catch (error) {
-                console.error('[ADMIN VENDOR THEMES] Failed to load vendors:', error);
+                vendorThemesLog.error('Failed to load vendors:', error);
                 this.error = error.message || 'Failed to load vendors';
             } finally {
                 this.loading = false;
@@ -62,4 +65,4 @@ function adminVendorThemes() {
     };
 }
 
-console.log('[ADMIN VENDOR THEMES] Module loaded');
+vendorThemesLog.info('Module loaded');