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/utils/PlatformServiceMixin.ts

@@ -39,6 +39,7 @@ import type { PlatformService } from "@/services/PlatformService";
 import { mapColumnsToValues, parseJsonField } from "@/db/databaseUtil";
 import { MASTER_SETTINGS_KEY } from "@/db/tables/settings";
 import * as databaseUtil from "@/db/databaseUtil";
+import { logger } from "@/utils/logger";
 
 // =================================================
 // CACHING INFRASTRUCTURE
@@ -194,7 +195,7 @@ export const PlatformServiceMixin = {
       try {
         return await (this as any).platformService.dbQuery(sql, params);
       } catch (error) {
-        console.error(
+        logger.error(
           `[${(this as any).$options.name}] Database query failed:`,
           {
             sql,
@@ -213,14 +214,11 @@ export const PlatformServiceMixin = {
       try {
         return await (this as any).platformService.dbExec(sql, params);
       } catch (error) {
-        console.error(
-          `[${(this as any).$options.name}] Database exec failed:`,
-          {
-            sql,
-            params,
-            error,
-          },
-        );
+        logger.error(`[${(this as any).$options.name}] Database exec failed:`, {
+          sql,
+          params,
+          error,
+        });
         throw error;
       }
     },
@@ -232,7 +230,7 @@ export const PlatformServiceMixin = {
       try {
         return await (this as any).platformService.dbGetOneRow(sql, params);
       } catch (error) {
-        console.error(
+        logger.error(
           `[${(this as any).$options.name}] Database single row query failed:`,
           {
             sql,
@@ -271,7 +269,7 @@ export const PlatformServiceMixin = {
 
         return settings;
       } catch (error) {
-        console.error(
+        logger.error(
           `[${(this as any).$options.name}] Failed to get settings:`,
           {
             key,
@@ -336,7 +334,7 @@ export const PlatformServiceMixin = {
 
         return mergedSettings;
       } catch (error) {
-        console.error(
+        logger.error(
           `[${(this as any).$options.name}] Failed to get merged settings:`,
           {
             defaultKey,