chore: Add testing configuration and clean up duplicate files

- Added pytest configuration and test suite
- Added TypeScript configuration for both frontend apps
- Removed duplicate migration files from backend/backend/migrations/
- Enhanced project structure for better testing and development"

frontend-client/tsconfig.json

@@ -0,0 +1,29 @@
+{
+  "extends": "./.svelte-kit/tsconfig.json",
+  "compilerOptions": {
+    "allowJs": true,
+    "checkJs": true,
+    "esModuleInterop": true,
+    "forceConsistentCasingInFileNames": true,
+    "resolveJsonModule": true,
+    "skipLibCheck": true,
+    "sourceMap": true,
+    "strict": true,
+    "moduleResolution": "bundler",
+    "target": "ES2020",
+    "module": "ESNext",
+    "lib": ["ES2020", "DOM", "DOM.Iterable"],
+    "allowSyntheticDefaultImports": true,
+    "isolatedModules": true
+  },
+  "include": [
+    "src/**/*",
+    "app.d.ts"
+  ],
+  "exclude": [
+    "node_modules/**",
+    ".svelte-kit/**",
+    "build/**",
+    "dist/**"
+  ]
+}