feat: add resources page with file management

- Add /resources page with file listing, filtering, and bulk operations
- Add useResources composable for file state management
- Add sidenav header and nav components for resources section
- Add files list API endpoint (GET /api/files)
- Track file size during upload
- Add resources link to home navigation

server/api/file/index.post.ts

@@ -13,6 +13,7 @@ export default defineEventHandler(async (event) => {
                 id: z.string(),
                 name: z.string(),
                 mimeType: z.string(),
+                size: z.number(),
                 url: z.string(),
             })
             .safeParse(body),
@@ -24,13 +25,14 @@ export default defineEventHandler(async (event) => {
         });
     }
 
-    const { id, name, mimeType, url } = result.data;
+    const { id, name, mimeType, size, url } = result.data;
 
     const file = await db.insert(files).values({
         id,
         userId,
         name,
         mimeType,
+        size,
         url,
         createdAt: new Date(),
     }).returning();