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/cli/src/commands/terminal/capture.ts

@@ -0,0 +1,99 @@
+import type { Command } from "commander";
+import { renderError, toCommandError } from "../../output/render.js";
+import {
+  connectTerminalClient,
+  resolveTerminalId,
+  toTerminalCommandError,
+  type TerminalCommandOptions,
+} from "./shared.js";
+
+export interface TerminalCaptureOptions extends TerminalCommandOptions {
+  start?: string;
+  end?: string;
+  scrollback?: boolean;
+  ansi?: boolean;
+}
+
+export async function runCaptureCommand(
+  terminalId: string,
+  _options: TerminalCaptureOptions,
+  command: Command,
+): Promise<void> {
+  const options = command.optsWithGlobals() as TerminalCaptureOptions;
+
+  try {
+    const payload = await executeCaptureCommand(terminalId, options);
+    if (options.json) {
+      process.stdout.write(
+        JSON.stringify(
+          {
+            terminalId: payload.terminalId,
+            lines: payload.lines,
+            totalLines: payload.totalLines,
+          },
+          null,
+          2,
+        ) + "\n",
+      );
+      return;
+    }
+
+    if (payload.lines.length > 0) {
+      process.stdout.write(payload.lines.join("\n") + "\n");
+    }
+  } catch (err) {
+    const output = renderError(toCommandError(err), {
+      format: options.json ? "json" : "table",
+      noColor: options.color === false,
+    });
+    process.stderr.write(output + "\n");
+    process.exit(1);
+  }
+}
+
+async function executeCaptureCommand(
+  terminalId: string,
+  options: TerminalCaptureOptions,
+): Promise<{ terminalId: string; lines: string[]; totalLines: number }> {
+  const { client } = await connectTerminalClient(options.host);
+
+  try {
+    const resolvedId = await resolveTerminalId(client, terminalId);
+    if (!resolvedId) {
+      throw {
+        code: "TERMINAL_NOT_FOUND",
+        message: `No terminal found matching: ${terminalId}`,
+        details: "Use `paseo terminal ls --all` to list available terminals.",
+      };
+    }
+
+    const start = options.scrollback ? 0 : parseLineNumber("--start", options.start);
+    const end = parseLineNumber("--end", options.end);
+
+    return await client.captureTerminal(resolvedId, {
+      ...(start === undefined ? {} : { start }),
+      ...(end === undefined ? {} : { end }),
+      stripAnsi: !options.ansi,
+    });
+  } catch (err) {
+    throw toTerminalCommandError("TERMINAL_CAPTURE_FAILED", "capture terminal output", err);
+  } finally {
+    await client.close().catch(() => {});
+  }
+}
+
+function parseLineNumber(flag: string, value?: string): number | undefined {
+  if (value === undefined) {
+    return undefined;
+  }
+
+  const parsed = Number.parseInt(value, 10);
+  if (!Number.isInteger(parsed)) {
+    throw {
+      code: "INVALID_LINE_NUMBER",
+      message: `Invalid ${flag} value: ${value}`,
+      details: "Use an integer line number.",
+    };
+  }
+  return parsed;
+}