fix(workflow): add plain-text fallback for AskUserQuestion on non-Claude runtimes (#2042)

AskUserQuestion is a Claude Code-only tool. When running GSD on OpenAI Codex,
Gemini CLI, or other non-Claude runtimes, the model renders the tool call as a
markdown code block instead of executing it, so the interactive TUI never
appears and the session stalls without collecting user input.

The workflow.text_mode / --text flag mechanism already handles this in 5 of
the 37 affected workflows. This commit adds the same TEXT_MODE fallback
instruction to all remaining 32 workflows so that, when text_mode is enabled,
every AskUserQuestion call is replaced with a plain-text numbered list that
any runtime can handle.

Fixes #2012

Co-authored-by: Claude Sonnet 4.6 <noreply@anthropic.com>

tests/ask-user-questions-fallback.test.cjs

@@ -0,0 +1,83 @@
+/**
+ * Regression guard for #2012: AskUserQuestion is Claude Code-only — non-Claude
+ * runtimes (OpenAI Codex, Gemini, etc.) render it as a markdown code block
+ * instead of triggering the interactive TUI, so the session stalls.
+ *
+ * Every workflow that calls AskUserQuestion MUST include a TEXT_MODE fallback
+ * instruction so that, when `workflow.text_mode` is true (or `--text` is
+ * passed), all AskUserQuestion calls are replaced with plain-text numbered
+ * lists that any runtime can handle.
+ *
+ * The canonical fallback phrase is:
+ *   "TEXT_MODE" (or "text_mode") paired with "plain-text" (or "plain text")
+ * near the first AskUserQuestion reference in the file.
+ */
+'use strict';
+
+const { describe, test } = require('node:test');
+const assert = require('node:assert/strict');
+const fs = require('fs');
+const path = require('path');
+
+const ROOT = path.join(__dirname, '..');
+const WORKFLOWS_DIR = path.join(ROOT, 'get-shit-done', 'workflows');
+
+/**
+ * Return true if the file content contains a TEXT_MODE / text_mode fallback
+ * instruction for AskUserQuestion calls.
+ *
+ * Acceptable forms (case-insensitive on key terms):
+ *   - "TEXT_MODE" + "plain-text" or "plain text"
+ *   - "text_mode" + "plain-text" or "plain text"
+ *   - "text mode" + "plain-text" or "plain text"
+ */
+function hasTextModeFallback(content) {
+  const lower = content.toLowerCase();
+  const hasTextMode =
+    lower.includes('text_mode') ||
+    lower.includes('text mode');
+  const hasPlainText =
+    lower.includes('plain-text') ||
+    lower.includes('plain text') ||
+    lower.includes('numbered list');
+  return hasTextMode && hasPlainText;
+}
+
+describe('AskUserQuestion text-mode fallback (#2012)', () => {
+  test('every workflow that uses AskUserQuestion includes a TEXT_MODE plain-text fallback', () => {
+    const violations = [];
+
+    const files = fs.readdirSync(WORKFLOWS_DIR).filter(f => f.endsWith('.md'));
+
+    for (const fname of files) {
+      const fpath = path.join(WORKFLOWS_DIR, fname);
+      const content = fs.readFileSync(fpath, 'utf-8');
+
+      if (!content.includes('AskUserQuestion')) continue;
+
+      if (!hasTextModeFallback(content)) {
+        violations.push(fname);
+      }
+    }
+
+    assert.strictEqual(
+      violations.length,
+      0,
+      [
+        'AskUserQuestion is Claude Code-only (issue #2012).',
+        'Every workflow that uses AskUserQuestion must include a TEXT_MODE fallback',
+        'so non-Claude runtimes (OpenAI Codex, Gemini, etc.) can present questions',
+        'as plain-text numbered lists instead of stalling on an unexecuted tool call.',
+        '',
+        'Add this near the argument-parsing section of each workflow:',
+        '  Set TEXT_MODE=true if --text is present in $ARGUMENTS OR text_mode from',
+        '  init JSON is true. When TEXT_MODE is active, replace every AskUserQuestion',
+        '  call with a plain-text numbered list and ask the user to type their choice',
+        '  number.',
+        '',
+        'Workflows missing the fallback:',
+        ...violations.map(v => '  get-shit-done/workflows/' + v),
+      ].join('\n')
+    );
+  });
+});