fix: add missing vendor loggers and safe fallbacks

- Added all vendor page loggers to vendorLoggers config
- Added safe fallback pattern to marketplace.js and dashboard.js
- Logger names now match what JS files expect

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

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

static/vendor/js/dashboard.js

@@ -3,10 +3,11 @@
  * Vendor dashboard page logic
  */
 
-// ✅ Use centralized logger
-const vendorDashLog = window.LogConfig.loggers.dashboard;
+// ✅ Use centralized logger (with safe fallback)
+const vendorDashLog = window.LogConfig.loggers.dashboard ||
+    window.LogConfig.createLogger('dashboard', false);
 
-vendorDashLog.info('[VENDOR DASHBOARD] Loading...');
+vendorDashLog.info('Loading...');
 vendorDashLog.info('[VENDOR DASHBOARD] data function exists?', typeof data);
 
 function vendorDashboard() {

static/vendor/js/marketplace.js

@@ -3,10 +3,11 @@
  * Vendor marketplace import page logic
  */
 
-// ✅ Use centralized logger
-const vendorMarketplaceLog = window.LogConfig.loggers.marketplace;
+// ✅ Use centralized logger (with safe fallback)
+const vendorMarketplaceLog = window.LogConfig.loggers.marketplace ||
+    window.LogConfig.createLogger('marketplace', false);
 
-vendorMarketplaceLog.info('[VENDOR MARKETPLACE] Loading...');
+vendorMarketplaceLog.info('Loading...');
 
 function vendorMarketplace() {
     vendorMarketplaceLog.info('[VENDOR MARKETPLACE] vendorMarketplace() called');