Maintain on the background scanner a set of expanded directories

crates/rpc/proto/zed.proto

@@ -62,6 +62,8 @@ message Envelope {
         RenameProjectEntry rename_project_entry = 46;
         CopyProjectEntry copy_project_entry = 47;
         DeleteProjectEntry delete_project_entry = 48;
+        ExpandProjectEntry expand_project_entry = 114;
+        CollapseProjectEntry collapse_project_entry = 115;
         ProjectEntryResponse project_entry_response = 49;
 
         UpdateDiagnosticSummary update_diagnostic_summary = 50;
@@ -372,6 +374,16 @@ message DeleteProjectEntry {
     uint64 entry_id = 2;
 }
 
+message ExpandProjectEntry {
+    uint64 project_id = 1;
+    uint64 entry_id = 2;
+}
+
+message CollapseProjectEntry {
+    uint64 project_id = 1;
+    uint64 entry_id = 2;
+}
+
 message ProjectEntryResponse {
     Entry entry = 1;
     uint64 worktree_scan_id = 2;

crates/rpc/src/proto.rs

@@ -150,6 +150,8 @@ messages!(
     (DeclineCall, Foreground),
     (DeleteProjectEntry, Foreground),
     (Error, Foreground),
+    (ExpandProjectEntry, Foreground),
+    (CollapseProjectEntry, Foreground),
     (Follow, Foreground),
     (FollowResponse, Foreground),
     (FormatBuffers, Foreground),
@@ -255,6 +257,8 @@ request_messages!(
     (CreateRoom, CreateRoomResponse),
     (DeclineCall, Ack),
     (DeleteProjectEntry, ProjectEntryResponse),
+    (ExpandProjectEntry, Ack),
+    (CollapseProjectEntry, Ack),
     (Follow, FollowResponse),
     (FormatBuffers, FormatBuffersResponse),
     (GetChannelMessages, GetChannelMessagesResponse),
@@ -311,6 +315,8 @@ entity_messages!(
     CreateBufferForPeer,
     CreateProjectEntry,
     DeleteProjectEntry,
+    ExpandProjectEntry,
+    CollapseProjectEntry,
     Follow,
     FormatBuffers,
     GetCodeActions,

crates/rpc/src/rpc.rs

@@ -6,4 +6,4 @@ pub use conn::Connection;
 pub use peer::*;
 mod macros;
 
-pub const PROTOCOL_VERSION: u32 = 58;
+pub const PROTOCOL_VERSION: u32 = 59;