Implement path-based downloads with blob redirect system

- Add fctdrive stat command to get blob IDs from paths
- Add Drive_stat function to drive_server.ts for backend integration
- Create /download/[...path] endpoint that redirects to /blob/{blobId}
- Update UI file links to use /download/ paths instead of direct blob links
- Update permalinks to use immutable /blob/{blobId} URLs
- Fix host preservation in redirects for remote access

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <[email protected]>

1 files changed, 14 insertions, 4 deletions

diff --git a/frontend/components/drive/DriveDirectoryClient.tsx b/frontend/components/drive/DriveDirectoryClient.tsx
index 6089ec2..c405341 100644
--- a/frontend/components/drive/DriveDirectoryClient.tsx
+++ b/frontend/components/drive/DriveDirectoryClient.tsx
@@ -125,11 +125,21 @@ export function DriveDirectoryClient({ path, files, breadcrumbs }: DriveDirector
   }
 
   const copyPermalink = (item: DriveLsEntry) => {
-    const permalink = `${window.location.origin}/drive/file/${item.path}`
+    if (!item.blob) {
+      toast({
+        title: "Cannot copy permalink",
+        description: "This item does not have a blob ID",
+        variant: "destructive"
+      })
+      return
+    }
+    
+    const filename = item.path.split('/').pop() || 'download'
+    const permalink = `${window.location.origin}/blob/${item.blob}?filename=${encodeURIComponent(filename)}`
     navigator.clipboard.writeText(permalink).then(() => {
       toast({
-        title: "Link copied!",
-        description: "Permalink has been copied to clipboard",
+        title: "Permalink copied!",
+        description: "Permanent blob link has been copied to clipboard",
       })
     })
   }
@@ -531,7 +541,7 @@ export function DriveDirectoryClient({ path, files, breadcrumbs }: DriveDirector
                             <div className="min-w-0 max-w-[60vw]">
                               {file.blob ? (
                                 <a
-                                  href={`/blob/${file.blob}?filename=${encodeURIComponent(fileName)}`}
+                                  href={`/download${file.path}`}
                                   className="text-blue-600 hover:text-blue-800 hover:underline cursor-pointer block truncate"
                                   target="_blank"
                                   rel="noopener noreferrer"