Method enableWindowsVTInput

packages/pi-tui/src/terminal.ts:338–366

* On Windows, add ENABLE_VIRTUAL_TERMINAL_INPUT (0x0200) to the stdin * console handle so the terminal sends VT sequences for modified keys * (e.g. \x1b[Z for Shift+Tab). Without this, libuv's ReadConsoleInputW * discards modifier state and Shift+Tab arrives as plain \t.

()

	 * discards modifier state and Shift+Tab arrives as plain \t.
	 */
	private enableWindowsVTInput(): void {
		if (process.platform !== "win32") return;
		try {
			const arch = process.arch;
			if (arch !== "x64" && arch !== "arm64") return;

			// Dynamic require so non-Windows and bundled/browser paths never load the
			// native helper. In the npm package native/ is next to dist/; in compiled
			// binary archives native/ is copied next to the executable.
			const moduleDir = path.dirname(fileURLToPath(import.meta.url));
			const nativePath = path.join("native", "win32", "prebuilds", `win32-${arch}`, "win32-console-mode.node");
			const candidates = [
				path.join(moduleDir, "..", nativePath),
				path.join(moduleDir, nativePath),
				path.join(path.dirname(process.execPath), nativePath),
			];
			for (const modulePath of candidates) {
				try {
					const helper = cjsRequire(modulePath) as { enableVirtualTerminalInput?: () => boolean };
					helper.enableVirtualTerminalInput?.();
					return;
				} catch {
					// Try the next possible packaging location.
				}
			}
		} catch {
			// Native helper not available — Shift+Tab won't be distinguishable from Tab.
		}
	}

	async drainInput(maxMs = 1000, idleMs = 50): Promise<void> {
		const shouldDisableKittyProtocol = this.keyboardProtocolPushed || this._kittyProtocolActive;