feat(web): panneau Fichiers — navigation projet + téléchargements fichier/dossier ZIP — #211

crates/domain/src/ports.rs

@@ -537,6 +537,8 @@ pub struct FileMetadata {
     pub is_dir: bool,
     /// File length in bytes when known.
     pub len: Option<u64>,
+    /// Last modification timestamp as epoch milliseconds when known.
+    pub modified_at_ms: Option<u64>,
 }
 
 /// An owned, boxed stream of PTY output chunks.
@@ -1916,12 +1918,29 @@ pub trait FileSystem: Send + Sync {
                 is_file: false,
                 is_dir: false,
                 len: None,
+                modified_at_ms: None,
             })
         } else {
             Err(FsError::NotFound(path.as_str().to_owned()))
         }
     }
 
+    /// Canonicalizes a path, following symlinks when the backing filesystem does.
+    ///
+    /// The default preserves source compatibility for remote/test adapters that do
+    /// not expose canonicalization; local confinement-sensitive use cases should
+    /// use an adapter that overrides this method.
+    ///
+    /// # Errors
+    /// [`FsError`] on failure.
+    async fn canonicalize(&self, path: &RemotePath) -> Result<RemotePath, FsError> {
+        if self.exists(path).await? {
+            Ok(path.clone())
+        } else {
+            Err(FsError::NotFound(path.as_str().to_owned()))
+        }
+    }
+
     /// Removes a single file. A **missing** file is treated as success (idempotent
     /// delete), so this is safe to call best-effort.
     ///