feat: add Iconify-based icon system with search and picker UI

- Replace Font Awesome with Iconify (@iconify/json collections)
- Add IconPicker component with search, collection filtering, lazy loading
- Create authenticated icon API endpoints (search, collections, individual icons)
- Update projects page to render icons via Icon.svelte component
- Pre-cache common icon collections (Lucide, Simple Icons, etc.) on startup

web/package.json

@@ -4,9 +4,9 @@
   "packageManager": "bun@latest",
   "scripts": {
     "preinstall": "npx only-allow bun",
-    "dev": "vite dev",
-    "build": "vite build",
-    "preview": "vite preview",
+    "dev": "bunx --bun vite dev",
+    "build": "bunx --bun vite build",
+    "preview": "bunx --bun vite preview",
     "prepare": "svelte-kit sync || echo ''",
     "check": "svelte-kit sync && svelte-check --tsconfig ./tsconfig.json",
     "check:watch": "svelte-kit sync && svelte-check --tsconfig ./tsconfig.json --watch",