feat: file logging on client, logs command to fetch last N lines

crates/common/src/protocol.rs

@@ -17,6 +17,8 @@ pub enum ServerMessage {
     ScreenshotRequest { request_id: Uuid },
     /// Capture a specific window by its HWND (works even if behind other windows)
     WindowScreenshotRequest { request_id: Uuid, window_id: u64 },
+    /// Fetch the last N lines of the client log file
+    LogsRequest { request_id: Uuid, lines: u32 },
     /// Show a MessageBox on the client asking the user to do something.
     /// Blocks until the user clicks OK — use this when you need the user
     /// to perform a manual action before continuing.
@@ -122,6 +124,11 @@ pub enum ClientMessage {
         version: String,
         commit: String,
     },
+    LogsResponse {
+        request_id: Uuid,
+        content: String,
+        log_path: String,
+    },
     /// Response to a download request
     DownloadResponse {
         request_id: Uuid,