#1795 — AskUserQuestion picker fallback (ORK_ASK_FALLBACK=text)

Symptom

CC 2.1.139 picker UI renders but does not accept keystrokes. Every AskUserQuestion auto-resolves to User declined to answer questions, silently breaking the 33 OrchestKit skills that depend on it (brainstorm, fix-issue, create-pr, assess, verify, …).

Mitigation

Set ORK_ASK_FALLBACK=text before starting CC. The new prompt/ask-fallback-injector hook injects a system-reminder on every UserPromptSubmit telling the assistant to use inline numbered prompts instead.

Scope

• 1 new hook: src/hooks/src/prompt/ask-fallback-injector.ts — one env-var check, no I/O
• 3 SKILL.md edits: brainstorm, fix-issue, create-pr — 3-line "Picker fallback" section each
• 1 docs page: docs/site/content/docs/guides/ask-fallback.mdx
• 1 unit test: src/hooks/src/__tests__/ask-fallback-injector.test.ts — 5/5 pass

Why a hook (not per-skill edits)

33 SKILL.md files use AskUserQuestion. Editing each would balloon the PR and drift. One UserPromptSubmit hook propagates the signal globally without touching skills.

Verified

 Test Files  1 passed (1)
      Tests  5 passed (5)

Refs #1795. Closes #1795 once the user confirms the fallback works in their session.