Integrate OpenHandoff factory workspace (#212)

factory/packages/cli/src/task-editor.ts

@@ -0,0 +1,45 @@
+import { mkdtempSync, readFileSync, rmSync, writeFileSync } from "node:fs";
+import { tmpdir } from "node:os";
+import { join } from "node:path";
+import { spawnSync } from "node:child_process";
+
+const DEFAULT_EDITOR_TEMPLATE = [
+  "# Enter handoff task details below.",
+  "# Lines starting with # are ignored.",
+  ""
+].join("\n");
+
+export function sanitizeEditorTask(input: string): string {
+  return input
+    .split(/\r?\n/)
+    .filter((line) => !line.trim().startsWith("#"))
+    .join("\n")
+    .trim();
+}
+
+export function openEditorForTask(): string {
+  const editor = process.env.VISUAL?.trim() || process.env.EDITOR?.trim() || "vi";
+  const tempDir = mkdtempSync(join(tmpdir(), "hf-task-"));
+  const taskPath = join(tempDir, "task.md");
+
+  try {
+    writeFileSync(taskPath, DEFAULT_EDITOR_TEMPLATE, "utf8");
+    const result = spawnSync(editor, [taskPath], { stdio: "inherit" });
+
+    if (result.error) {
+      throw result.error;
+    }
+    if ((result.status ?? 1) !== 0) {
+      throw new Error(`Editor exited with status ${result.status ?? "unknown"}`);
+    }
+
+    const raw = readFileSync(taskPath, "utf8");
+    const task = sanitizeEditorTask(raw);
+    if (!task) {
+      throw new Error("Missing handoff task text");
+    }
+    return task;
+  } finally {
+    rmSync(tempDir, { recursive: true, force: true });
+  }
+}