first pass of merging in warp (doesn't build)

crates/repo_metadata/src/file_tree_update.rs

@@ -8,6 +8,16 @@
 use galaxy_util::standardized_path::StandardizedPath;
 
 use crate::entry::{DirectoryEntry, Entry, FileMetadata};
+use crate::standing_queries::StandingQueryResultsDelta;
+/// Describes how a file-tree entry update should be interpreted by consumers.
+#[derive(Debug, Clone)]
+pub enum MetadataUpdateType {
+    /// The updated entry was replaced without a precise metadata delta.
+    /// Consumers should refresh any derived state conservatively.
+    FullReplace,
+    /// The updated entry includes a precise incremental metadata delta.
+    IncrementalUpdate(RepoMetadataUpdate),
+}
 
 /// Mirrors `RepoMetadataUpdate` proto.
 ///
@@ -22,6 +32,8 @@ pub struct RepoMetadataUpdate {
     pub remove_entries: Vec<StandardizedPath>,
     /// Subtree patches to add or replace in the tree.
     pub update_entries: Vec<FileTreeEntryUpdate>,
+    /// Standing query changes synchronized with this tree change.
+    pub standing_results_delta: StandingQueryResultsDelta,
 }
 
 /// Mirrors `FileTreeEntry` proto.