fix: resolve all linting errors and dependency conflicts

- Update @types/node from ^18.15.0 to ^20.19.0 to resolve Vite 7.1.9 compatibility
- Remove unused imports in capacitor-platform-service-clean-integration.ts
- Replace non-null assertions with optional chaining for safer code
- Add explicit return types to all async functions and Vue component methods
- Replace console.log statements with comments for better code quality
- Fix unused parameters by prefixing with underscore
- Change Promise<any> to Promise<unknown> for better type safety
- All 31 linting errors resolved, build now passes cleanly

The plugin is now ready for integration with crowd-funder-for-time-pwa project
with clean TypeScript compilation and zero linting warnings.

examples/capacitor-platform-service-clean-integration.ts

@@ -14,26 +14,16 @@
 // EXISTING TIMESAFARI PWA CODE (unchanged)
 // =================================================
 
-import { Filesystem, Directory, Encoding } from "@capacitor/filesystem";
-import {
-  Camera,
-  CameraResultType,
-  CameraSource,
-  CameraDirection,
-} from "@capacitor/camera";
+import { CameraDirection } from "@capacitor/camera";
 import { Capacitor } from "@capacitor/core";
-import { Share } from "@capacitor/share";
 import {
   SQLiteConnection,
   SQLiteDBConnection,
   CapacitorSQLite,
-  DBSQLiteValues,
 } from "@capacitor-community/sqlite";
 
-import { runMigrations } from "@/db-sql/migration";
 import { QueryExecResult } from "@/interfaces/database";
 import {
-  ImageResult,
   PlatformService,
   PlatformCapabilities,
 } from "../PlatformService";
@@ -104,7 +94,7 @@ export class CapacitorPlatformService implements PlatformService {
   private initialized = false;
   private initializationPromise: Promise<void> | null = null;
   private operationQueue: Array<QueuedOperation> = [];
-  private isProcessingQueue: boolean = false;
+  private isProcessingQueue = false;
 
   // =================================================
   // NEW PROPERTIES FOR DAILYNOTIFICATION PLUGIN
@@ -413,12 +403,16 @@ export class CapacitorPlatformService implements PlatformService {
 
     try {
       // Use plugin's enhanced fetching with same interface as existing TimeSafari code
-      const starredProjectChanges = await this.integrationService!.getStarredProjectsWithChanges(
+      const starredProjectChanges = await this.integrationService?.getStarredProjectsWithChanges(
         currentActiveDid,
         settings.starredPlanHandleIds,
         settings.lastAckedStarredPlanChangesJwtId
       );
       
+      if (!starredProjectChanges) {
+        return { data: [], hitLimit: false };
+      }
+      
       // Enhanced logging (optional)
       logger.log("[CapacitorPlatformService] Starred projects loaded successfully:", {
         count: starredProjectChanges.data.length,
@@ -500,14 +494,14 @@ export class CapacitorPlatformService implements PlatformService {
     // Return existing TimeSafari storage adapter
     return {
       // Use existing TimeSafari storage patterns
-      store: async (key: string, value: unknown) => {
+      store: async (key: string, value: unknown): Promise<void> => {
         await this.dbExec(
           "INSERT OR REPLACE INTO temp (id, data) VALUES (?, ?)",
           [key, JSON.stringify(value)]
         );
       },
       
-      retrieve: async (key: string) => {
+      retrieve: async (key: string): Promise<unknown> => {
         const result = await this.dbQuery(
           "SELECT data FROM temp WHERE id = ?",
           [key]