feat: analyze all button, support for UTF8 filenames

app/(app)/files/download/[fileId]/route.ts

@@ -1,5 +1,6 @@
 import { getCurrentUser } from "@/lib/auth"
 import { fileExists, fullPathForFile } from "@/lib/files"
+import { encodeFilename } from "@/lib/utils"
 import { getFileById } from "@/models/files"
 import fs from "fs/promises"
 import { NextResponse } from "next/server"
@@ -30,12 +31,12 @@ export async function GET(request: Request, { params }: { params: Promise<{ file
     // Read file
     const fileBuffer = await fs.readFile(fullFilePath)
 
-    // Return file with proper content type
+    // Return file with proper content type and encoded filename
     return new NextResponse(fileBuffer, {
       headers: {
         "Content-Type": file.mimetype,
-        "Content-Disposition": `attachment; filename="${file.filename}"`,
-      },
+          "Content-Disposition": `attachment; filename*=${encodeFilename(file.filename)}`,
+        },
     })
   } catch (error) {
     console.error("Error serving file:", error)