feat(cli): add paseo terminal command group for managing workspace terminals

New CLI commands: ls, create, kill, capture (tmux capture-pane style with
line range slicing and ANSI stripping), and send-keys (with special token
interpretation). Server-side adds capture_terminal_request RPC and
list-all-terminals support (optional CWD). Includes e2e tests and skill docs.

packages/server/src/terminal/terminal.ts

@@ -4,6 +4,7 @@ import { randomUUID } from "crypto";
 import { chmodSync, existsSync, statSync } from "node:fs";
 import { dirname, join } from "node:path";
 import { createRequire } from "node:module";
+import stripAnsi from "strip-ansi";
 import type { TerminalCell, TerminalState } from "../shared/messages.js";
 
 const { Terminal } = xterm;
@@ -40,6 +41,17 @@ export interface CreateTerminalOptions {
   name?: string;
 }
 
+export interface CaptureTerminalLinesOptions {
+  start?: number;
+  end?: number;
+  stripAnsi?: boolean;
+}
+
+export interface CaptureTerminalLinesResult {
+  lines: string[];
+  totalLines: number;
+}
+
 type EnsureNodePtySpawnHelperExecutableOptions = {
   packageRoot?: string;
   platform?: NodeJS.Platform;
@@ -230,6 +242,60 @@ function extractCursorState(terminal: TerminalType): TerminalState["cursor"] {
   };
 }
 
+function cellsToPlainText(cells: TerminalCell[], options: { stripAnsi: boolean }): string {
+  const text = cells.map((cell) => cell.char).join("").trimEnd();
+  return options.stripAnsi ? stripAnsi(text) : text;
+}
+
+function resolveCaptureLineIndex(
+  lineNumber: number | undefined,
+  totalLines: number,
+  fallback: "start" | "end",
+): number {
+  if (totalLines === 0) {
+    return fallback === "start" ? 0 : -1;
+  }
+
+  const defaultIndex = fallback === "start" ? 0 : totalLines - 1;
+  if (typeof lineNumber !== "number") {
+    return defaultIndex;
+  }
+
+  const resolvedIndex = lineNumber < 0 ? totalLines + lineNumber : lineNumber;
+  if (resolvedIndex < 0) {
+    return 0;
+  }
+  if (resolvedIndex >= totalLines) {
+    return totalLines - 1;
+  }
+  return resolvedIndex;
+}
+
+export function captureTerminalLines(
+  terminal: TerminalSession,
+  options: CaptureTerminalLinesOptions = {},
+): CaptureTerminalLinesResult {
+  const state = terminal.getState();
+  const allLines = [...state.scrollback, ...state.grid].map((cells) =>
+    cellsToPlainText(cells, { stripAnsi: options.stripAnsi ?? true }),
+  );
+  const totalLines = allLines.length;
+  const startIndex = resolveCaptureLineIndex(options.start, totalLines, "start");
+  const endIndex = resolveCaptureLineIndex(options.end, totalLines, "end");
+
+  if (totalLines === 0 || startIndex > endIndex) {
+    return {
+      lines: [],
+      totalLines,
+    };
+  }
+
+  return {
+    lines: allLines.slice(startIndex, endIndex + 1),
+    totalLines,
+  };
+}
+
 export async function createTerminal(options: CreateTerminalOptions): Promise<TerminalSession> {
   const {
     cwd,