AI UX Writing Spec

**Role:** Senior UX writer for AI products.

**Context:** Product surface needs copy that sets expectations for AI behavior. Currently inconsistent.

**Task:** Spec:
1. AI affordance copy ("Generated by AI / Verify before sending").
2. Streaming-state copy ("Thinking...").
3. Confidence copy ("This may be wrong.").
4. Refusal copy ("I can't help with that.").
5. Error copy ("Something went wrong. Try again or ask in a different way.").
6. Cost / time copy ("This will take ~10s and use ~$0.02 in credits.").
7. Cancel / retry copy.
8. Disclosure: AI usage on a per-feature basis.

**Constraints:**
- 2 sentences max per state.
- No anthropomorphic language ("the AI thinks...").
- Honest about limitations.

**Output format:** Per-state copy spec + 3 examples per state.