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, 20 insertions, 0 deletions

diff --git a/src/main.rs b/src/main.rs
index 6431a88..ebbc817 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -747,6 +747,7 @@ enum Cmd {
     Import(ImportArgs),
     Blob(BlobArgs),
     Log(LogArgs),
+    Stat(StatArgs),
 }
 
 #[derive(Debug, Args)]
@@ -847,6 +848,14 @@ struct LogArgs {
     common: CliCommon,
 }
 
+#[derive(Debug, Args)]
+struct StatArgs {
+    #[clap(flatten)]
+    common: CliCommon,
+
+    path: DrivePath,
+}
+
 fn main() {
     let cli = Cli::parse();
 
@@ -858,6 +867,7 @@ fn main() {
         Cmd::Import(args) => cmd_import(args),
         Cmd::Blob(args) => cmd_blob(args),
         Cmd::Log(args) => cmd_log(args),
+        Cmd::Stat(args) => cmd_stat(args),
     }
 }
 
@@ -1111,6 +1121,16 @@ fn cmd_log(args: LogArgs) {
     }
 }
 
+fn cmd_stat(args: StatArgs) {
+    let ops = common_read_log_file(&args.common);
+    let mut fs = Fs::default();
+    ops.iter().for_each(|op| apply(&mut fs, op).unwrap());
+
+    let node_id = find_node(&fs, &args.path).unwrap();
+    let node = &fs.nodes[node_id];
+    println!("{}", node.blob);
+}
+
 fn collect_all_file_paths(root: &Path) -> Vec<PathBuf> {
     let mut queue = vec![root.to_path_buf()];
     let mut files = vec![];