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/code-quality-violations.js

@@ -3,6 +3,9 @@
  * Manages the violations list page with filtering and pagination
  */
 
+// ✅ Use centralized logger
+const codeQualityViolationsLog = window.LogConfig.createLogger('CODE-QUALITY');
+
 function codeQualityViolations() {
     return {
         // Extend base data
@@ -68,7 +71,7 @@ function codeQualityViolations() {
                 // Update URL with current filters (without reloading)
                 this.updateURL();
             } catch (err) {
-                console.error('Failed to load violations:', err);
+                codeQualityViolationsLog.error('Failed to load violations:', err);
                 this.error = err.message;
 
                 // Redirect to login if unauthorized