refactor(assets): convert asset management scripts to TypeScript with tsx

- Replace JavaScript asset scripts with TypeScript equivalents
- Install tsx for direct TypeScript execution without compilation
- Add proper TypeScript interfaces for AssetConfig and validation
- Update package.json scripts to use tsx instead of node
- Remove old JavaScript files (assets-config.js, assets-validator.js)
- Maintain all existing functionality while improving type safety
- Fix module syntax issues that caused build failures on macOS

Scripts affected:
- assets:config: node → tsx scripts/assets-config.ts
- assets:validate: node → tsx scripts/assets-validator.ts

Benefits:
- Eliminates CommonJS/ES module syntax conflicts
- Provides better type safety and IntelliSense
- Modernizes development tooling
- Ensures cross-platform compatibility

package.json

@@ -26,8 +26,8 @@
     "build:capacitor": "VITE_GIT_HASH=`git log -1 --pretty=format:%h` vite build --mode capacitor --config vite.config.capacitor.mts",
     "build:capacitor:sync": "npm run build:capacitor && npx cap sync",
     "build:native": "vite build && npx cap sync && npx capacitor-assets generate",
-    "assets:config": "node scripts/assets-config.js",
-    "assets:validate": "node scripts/assets-validator.js",
+    "assets:config": "tsx scripts/assets-config.ts",
+    "assets:validate": "tsx scripts/assets-validator.ts",
     "assets:clean": "rimraf android/app/src/main/res/mipmap-* ios/App/App/Assets.xcassets/**/AppIcon*.png ios/App/App/Assets.xcassets/**/Splash*.png || true",
     "build:ios": "./scripts/build-ios.sh",
     "build:ios:dev": "./scripts/build-ios.sh --dev",
@@ -245,6 +245,7 @@
     "rimraf": "^6.0.1",
     "tailwindcss": "^3.4.1",
     "ts-jest": "^29.4.0",
+    "tsx": "^4.20.4",
     "typescript": "~5.2.2",
     "vite": "^5.2.0"
   }