fix: route all console.error through ErrorHandler for consistent tracking

Converted 35+ raw console.error calls to use ErrorHandler.logError() across
12 files. ErrorHandler provides structured logging, local error storage,
and error tracking integration.

Files:
- app-selector.js: 4 errors (fetch templates, port check, suggested port, deploy)
- globals.js: 2 errors (CSRF token get/add)
- service-credentials.js: 2 errors (save/clear credentials)
- totp-settings.js: 4 errors (TOTP setup, session duration, disable, AuthCard)
- notification-settings.js: 2 errors (load config, load history)
- setup-wizard.js: 2 errors (save config to server)
- progress-tracker.js: 4 errors (storage read/write/session/fallback)
- tooltip-definitions.js: 2 errors (validation, condition eval)
- tour-manager.js: 2 errors (Driver.js not loaded, tooltip not found)
- theme-adapter.js: 1 error (theme change callback)
- weather.js: 1 error (weather update)
- onboarding.js: removed duplicate console.error, fixed 2 remaining calls

All console.error calls in the DashCaddy frontend now go through ErrorHandler.

status/js/weather.js

@@ -1,5 +1,6 @@
 // ========== WEATHER WIDGET ==========
 (function() {
+  const errorHandler = new ErrorHandler();
   // Inject modal HTML
   injectModal('weather-modal', `<div id="weather-modal" class="weather-modal"><div class="weather-modal-content"><h3>Weather Settings</h3>
     <label for="weather-location-input">Location:</label>
@@ -166,7 +167,7 @@
         weatherWidget.icon.innerHTML = `<span class="weather-emoji">${escapeHtml(weather.icon)}</span>`;
       }
     } catch (error) {
-      console.error('Weather update error:', error);
+      errorHandler.logError('[Weather] Update Error', error, { function: 'updateWeather' });
       weatherWidget.location.textContent = 'Weather Error';
       weatherWidget.temp.textContent = 'Error';
       weatherWidget.condition.textContent = 'Failed to load';