Revert "fix(terminal): preserve text selection while terminal receives output"

This reverts commit 3ac26ba6e8.

packages/web/src/components/DirectTerminal.tsx

@@ -201,40 +201,10 @@ export function DirectTerminal({
           );
         };
 
-        // Buffer incoming data while the user is selecting text so that
-        // terminal.write() doesn't clear the xterm.js selection mid-drag.
-        let selecting = false;
-        const writeBuffer: string[] = [];
-
-        const flushBuffer = () => {
-          if (writeBuffer.length > 0) {
-            terminal.write(writeBuffer.join(""));
-            writeBuffer.length = 0;
-          }
-        };
-
-        const onMouseDown = () => {
-          selecting = true;
-        };
-        const onMouseUp = () => {
-          selecting = false;
-          // Small delay so the selection is still visible when the user
-          // releases the mouse and can hit Cmd+C before the flush clears it.
-          setTimeout(flushBuffer, 150);
-        };
-
-        const el = terminalRef.current!;
-        el.addEventListener("mousedown", onMouseDown);
-        el.addEventListener("mouseup", onMouseUp);
-
         websocket.onmessage = (event) => {
           const data =
             typeof event.data === "string" ? event.data : new TextDecoder().decode(event.data);
-          if (selecting) {
-            writeBuffer.push(data);
-          } else {
-            terminal.write(data);
-          }
+          terminal.write(data);
         };
 
         websocket.onerror = (event) => {
@@ -314,8 +284,6 @@ export function DirectTerminal({
 
         // Store cleanup function to be called from useEffect cleanup
         cleanup = () => {
-          el.removeEventListener("mousedown", onMouseDown);
-          el.removeEventListener("mouseup", onMouseUp);
           window.removeEventListener("resize", handleResize);
           disposable.dispose();
           websocket.close();