Fix CI/CD pipeline issues from code review FRE-4690

- web-ci.yml: Remove web/ path refs (app is at repo root), fix cache paths, update Vercel action to v30
- ios-ci.yml: Fix swift-format tool name, use debug build for PR CI, add TestFlight deployment job, use env var for Xcode path
- Scaffold package.json, tsconfig.json, vite.config.ts for web project at root

package.json

@@ -0,0 +1,19 @@
+{
+  "name": "lendair-web",
+  "version": "0.1.0",
+  "private": true,
+  "type": "module",
+  "scripts": {
+    "dev": "vite",
+    "build": "tsc && vite build",
+    "preview": "vite preview",
+    "test": "vitest run",
+    "test:watch": "vitest",
+    "typecheck": "tsc --noEmit"
+  },
+  "devDependencies": {
+    "typescript": "^5.4.0",
+    "vite": "^5.2.0",
+    "vitest": "^1.4.0"
+  }
+}