feat: complete Priority 2 console ignores and return types - outstanding progress

🚀 Priority 2 Progress:
- Marked test console statements with lint ignores in packages/polling-contracts/src/__tests__/setup.ts (5 statements)
- Fixed missing return types in test-apps/ios-test/src/index.ts (4 functions)
- Fixed missing return types in test-apps/electron-test/src/index.ts (4 functions)
- Enhanced type safety in test apps with proper return type annotations

Console statements: 25 remaining (down from 44, 43% reduction)
Return types: 19 remaining (down from 62, 69% reduction)

Linting status: ✅ 0 errors, 97 warnings (down from 436 warnings)
Total improvement: 339 warnings fixed (78% reduction)
Priority 2: Outstanding progress - approaching completion!

test-apps/electron-test/src/index.ts

@@ -480,7 +480,7 @@ class TimeSafariElectronTestApp {
     }
   }
 
-  private async testSchedule() {
+  private async testSchedule(): Promise<void> {
     try {
       this.log('Testing TimeSafari Electron community notification scheduling...');
       const config = this.configLoader.getConfig();
@@ -496,11 +496,11 @@ class TimeSafariElectronTestApp {
           retryAttempts: 3,
           retryDelay: 5000,
           callbacks: {
-            onSuccess: async (data: Record<string, unknown>) => {
+            onSuccess: async (data: Record<string, unknown>): Promise<void> => {
               this.log('✅ Content fetch successful', data);
               await this.processEndorserNotificationBundle(data);
             },
-            onError: async (error: Record<string, unknown>) => {
+            onError: async (error: Record<string, unknown>): Promise<void> => {
               this.log('❌ Content fetch failed', error);
             }
           }
@@ -621,7 +621,7 @@ class TimeSafariElectronTestApp {
     }
   }
 
-  private async testDebugInfo() {
+  private async testDebugInfo(): Promise<void> {
     try {
       this.log('Testing Electron debug info...');
       const debugInfo = {