Revert "fix(desktop): strip ESC[3J to prevent terminal scrollback jump on reattach"

apps/desktop/src/main/lib/terminal-escape-filter.test.ts

@@ -132,6 +132,7 @@ describe("extractContentAfterClear", () => {
 		});
 
 		it("should not confuse similar sequences", () => {
+			// ESC[3 (without J) is not a clear sequence
 			expect(extractContentAfterClear(`${ESC}[3mtext`)).toBe(`${ESC}[3mtext`);
 		});
 	});

apps/desktop/src/main/lib/terminal-escape-filter.ts

@@ -3,14 +3,20 @@
  */
 
 const ESC = "\x1b";
-const ED3_SEQUENCE = `${ESC}[3J`;
 
 /**
- * Pattern to detect clear scrollback sequences (ED3 only).
- * ESC c (RIS) is intentionally excluded - TUI apps use it for repaints.
+ * Pattern to detect clear scrollback sequences:
+ * - ESC [ 3 J - Clear scrollback buffer (ED3)
+ *
+ * Note: We intentionally do NOT include ESC c (RIS - Reset to Initial State)
+ * because TUI applications (vim, htop, etc.) commonly use RIS for screen
+ * repaints/refreshes. Only ED3 is a deliberate "clear scrollback" action
+ * triggered by commands like `clear` or Cmd+K.
  */
 const CLEAR_SCROLLBACK_PATTERN = new RegExp(`${ESC}\\[3J`);
 
+const ED3_SEQUENCE = `${ESC}[3J`;
+
 /**
  * Checks if data contains sequences that clear the scrollback buffer.
  * Used to detect when the shell sends clear commands (e.g., from `clear` command or Cmd+K).

apps/desktop/src/main/lib/terminal/session.ts

@@ -178,7 +178,7 @@ export function setupDataHandler(
 	let commandsSent = false;
 
 	session.pty.onData((data) => {
-		// Recreate headless on clear because xterm.clear() is async and unreliable
+		// Recreate headless on clear (xterm writes are async, so clear() alone is unreliable)
 		if (containsClearScrollbackSequence(data)) {
 			session.headless.dispose();
 			const { headless, serializer } = createHeadlessTerminal({

apps/desktop/src/renderer/screens/main/components/WorkspaceView/ContentView/TabsContent/Terminal/hooks/useTerminalRestore.ts

@@ -3,7 +3,7 @@ import type { Terminal as XTerm } from "@xterm/xterm";
 import { useCallback, useRef } from "react";
 import { DEBUG_TERMINAL } from "../config";
 import type { CreateOrAttachResult, TerminalStreamEvent } from "../types";
-import { scrollToBottom, stripClearScrollbackSequence } from "../utils";
+import { scrollToBottom } from "../utils";
 
 export interface UseTerminalRestoreOptions {
 	paneId: string;
@@ -92,7 +92,7 @@ export function useTerminalRestore({
 		for (const event of events) {
 			if (event.type === "data") {
 				updateModesRef.current(event.data);
-				xterm.write(stripClearScrollbackSequence(event.data));
+				xterm.write(event.data);
 				updateCwdRef.current(event.data);
 			} else if (event.type === "exit") {
 				onExitEventRef.current(event.exitCode, xterm);

apps/desktop/src/renderer/screens/main/components/WorkspaceView/ContentView/TabsContent/Terminal/utils.ts

@@ -1,8 +1,6 @@
 import type { Terminal } from "@xterm/xterm";
 import { quote } from "shell-quote";
 
-export { stripClearScrollbackSequence } from "shared/terminal-escape";
-
 export function shellEscapePaths(paths: string[]): string {
 	return quote(paths);
 }