Replace console statements with structured logger calls

- Replace 30 console.log/error/warn statements with appropriate logger calls
- Add logger imports where missing (PlatformServiceFactory, PlatformServiceMixin)
- Maintain eslint-disable comments for critical error logging in worker context
- Improve error handling consistency across platform services
- Clean up commented-out logger statements in WebPlatformService

Files affected:
- src/db/databaseUtil.ts: 4 console statements → logger calls
- src/main.electron.ts: 3 console statements → logger calls
- src/registerSQLWorker.js: 9 console statements → logger calls
- src/services/PlatformServiceFactory.ts: 1 console statement → logger call
- src/services/platforms/WebPlatformService.ts: 8 console statements → logger calls
- src/utils/PlatformServiceMixin.ts: 5 console statements → logger calls

Reduces ESLint warnings from 111 to 82 (eliminates all no-console warnings)

src/main.electron.ts

@@ -90,7 +90,7 @@ if (typeof window !== "undefined" && window.require) {
         .getRegistrations()
         .then(function (registrations) {
           for (const registration of registrations) {
-            console.log(
+            logger.log(
               "[Electron] Unregistering service worker:",
               registration.scope,
             );
@@ -98,14 +98,11 @@ if (typeof window !== "undefined" && window.require) {
           }
         })
         .catch((error) => {
-          console.log(
-            "[Electron] Failed to unregister service workers:",
-            error,
-          );
+          logger.log("[Electron] Failed to unregister service workers:", error);
         });
     }
   } catch (error) {
-    console.log("[Electron] Service worker cleanup not available:", error);
+    logger.log("[Electron] Service worker cleanup not available:", error);
   }
 
   // Add any Electron-specific initialization here