chore: Restore .vscode/settings.json as requested by maintainer

- Restore VS Code workspace settings for project consistency
- Includes TypeScript diagnostics and Prettier formatter configuration
- Addresses maintainer feedback from PR review

.vscode/settings.json

@@ -0,0 +1,19 @@
+{
+  "typescript.tsserver.experimental.enableProjectDiagnostics": true,
+  "editor.tabSize": 2,
+  "editor.rulers": [80],
+  "editor.detectIndentation": false,
+  "editor.insertSpaces": true,
+  "[typescript]": {
+    "editor.defaultFormatter": "esbenp.prettier-vscode"
+  },
+  "[json]": {
+    "editor.defaultFormatter": "esbenp.prettier-vscode"
+  },
+  "[javascript]": {
+    "editor.defaultFormatter": "esbenp.prettier-vscode"
+  },
+  "typescript.preferences.includePackageJsonAutoImports": "off",
+  "typescript.suggest.autoImports": true,
+  "typescript.validate.enable": true
+}