Add 5 pi extensions: pi-subagents, pi-crew, rpiv-pi, pi-interactive-shell, pi-intercom

extensions/pi-interactive-shell/pty-protocol.ts

@@ -0,0 +1,33 @@
+// DSR (Device Status Report) - cursor position query: ESC[6n or ESC[?6n
+const DSR_PATTERN = /\x1b\[\??6n/g;
+
+/** Result of splitting PTY output around device-status-report cursor queries. */
+export interface DsrSplit {
+	segments: Array<{ text: string; dsrAfter: boolean }>;
+	hasDsr: boolean;
+}
+
+export function splitAroundDsr(input: string): DsrSplit {
+	const segments: Array<{ text: string; dsrAfter: boolean }> = [];
+	let lastIndex = 0;
+	let hasDsr = false;
+	const regex = new RegExp(DSR_PATTERN.source, "g");
+	let match: RegExpExecArray | null;
+	while ((match = regex.exec(input)) !== null) {
+		hasDsr = true;
+		if (match.index > lastIndex) {
+			segments.push({ text: input.slice(lastIndex, match.index), dsrAfter: true });
+		} else {
+			segments.push({ text: "", dsrAfter: true });
+		}
+		lastIndex = match.index + match[0].length;
+	}
+	if (lastIndex < input.length) {
+		segments.push({ text: input.slice(lastIndex), dsrAfter: false });
+	}
+	return { segments, hasDsr };
+}
+
+export function buildCursorPositionResponse(row = 1, col = 1): string {
+	return `\x1b[${row};${col}R`;
+}