fix(tui): skip Kitty query inside Zellij\n\nfixes #3163

packages/tui/src/terminal.ts

@@ -184,6 +184,17 @@ export class ProcessTerminal implements Terminal {
 	private queryAndEnableKittyProtocol(): void {
 		this.setupStdinBuffer();
 		process.stdin.on("data", this.stdinDataHandler!);
+
+		// Zellij forwards the Kitty query to the outer terminal, which can make
+		// Pi enable its Kitty parser even though Zellij still sends Alt as
+		// legacy ESC-prefixed sequences. Skip the Kitty query there and use
+		// modifyOtherKeys directly instead.
+		if (process.env.ZELLIJ) {
+			process.stdout.write("\x1b[>4;2m");
+			this._modifyOtherKeysActive = true;
+			return;
+		}
+
 		process.stdout.write("\x1b[?u");
 		setTimeout(() => {
 			if (!this._kittyProtocolActive && !this._modifyOtherKeysActive) {