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>

get-shit-done/workflows/execute-plan.md

@@ -135,6 +135,8 @@ This IS the execution instructions. Follow exactly. If plan references CONTEXT.m
 node "$HOME/.claude/get-shit-done/bin/gsd-tools.cjs" phases list --type summaries --raw
 # Extract the second-to-last summary from the JSON result
 ```
+
+**Text mode (`workflow.text_mode: true` in config or `--text` flag):** Set `TEXT_MODE=true` if `--text` is present in `$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. This is required for non-Claude runtimes (OpenAI Codex, Gemini CLI, etc.) where `AskUserQuestion` is not available.
 If previous SUMMARY has unresolved "Issues Encountered" or "Next Phase Readiness" blockers: AskUserQuestion(header="Previous Issues", options: "Proceed anyway" | "Address first" | "Review previous").
 </step>