fix: reopen /dev/tty after piped stdin so interactive prompts work

Author: shouze

src/commands/create.ts

@@ -19,6 +19,7 @@ import { readStdin, parseResults } from "../input/stdin.ts";
 import { buildEpicBody, bodyLengthWarning, splitBodyAtLimit } from "../output/format.ts";
 import { createIssue, addComment, listLabels, listIssueTemplates } from "../api/github-api.ts";
 import { openEditor } from "../tui/editor.ts";
+import { reopenStdinAsTty } from "../tui/tty.ts";
 import type { EpicConfig } from "../types.ts";
 
 export interface CreateOptions {
@@ -61,6 +62,11 @@ export async function createAction(options: CreateOptions): Promise<void> {
     process.exit(1);
   }
 
+  // ── Restore TTY for interactive prompts ───────────────────────────────────
+  // stdin was consumed by readStdin() above; re-open /dev/tty so that clack
+  // prompts (text, confirm, select…) can still read from the terminal.
+  reopenStdinAsTty();
+
   // ── Resolve title ─────────────────────────────────────────────────────────
   let title = options.title;
   if (!title && !options.nonInteractive) {

src/tui/tty.ts

@@ -0,0 +1,35 @@
+// ─── TTY utilities ────────────────────────────────────────────────────────────
+//
+// When stdin is piped (e.g. `cat results.md | github-issue-ops issue create`),
+// process.stdin is consumed by readStdin() and left at EOF.
+// Interactive prompt libraries (clack, inquirer, etc.) all read from
+// process.stdin, so they immediately receive EOF and exit silently.
+//
+// reopenStdinAsTty() replaces process.stdin with a fresh ReadStream opened
+// on /dev/tty, restoring the interactive terminal connection so that prompts
+// work normally even after piped input has been consumed.
+
+import { ReadStream } from "node:tty";
+import { openSync } from "node:fs";
+
+/**
+ * If stdin was piped (and therefore consumed), re-open /dev/tty and reassign
+ * process.stdin so interactive prompts can still read from the terminal.
+ * No-op on Windows or when stdin is already a TTY.
+ */
+export function reopenStdinAsTty(): void {
+  // Already a live TTY — nothing to do
+  if (process.stdin.isTTY) return;
+  // /dev/tty is POSIX-only (macOS + Linux)
+  if (process.platform === "win32") return;
+  try {
+    const fd = openSync("/dev/tty", "r+");
+    const tty = new ReadStream(fd);
+    // @ts-expect-error — intentionally replacing the global stdin stream
+    process.stdin = tty;
+    process.stdin.resume();
+  } catch {
+    // /dev/tty unavailable (CI without terminal, container, etc.) — prompts
+    // will still fail gracefully; caller should fall back to --non-interactive.
+  }
+}