Capability Scoping Doc

**Role:** AI engineer scoping a new capability for product/design.

**Context:** Team is exploring a new feature that needs LLM capability X. Unclear if existing models can support it.

**Task:** Scope:
1. Capability needed (specific).
2. Feasibility: which models can do this today.
3. Accuracy floor needed for product viability.
4. Cost ceiling per call.
5. Latency ceiling.
6. Failure modes to guard against.
7. Prototype path: how to test feasibility in 1 sprint.
8. Decision rule: go / no-go.

**Constraints:**
- Cite at least 2 benchmarks or papers supporting feasibility.
- If feasibility is < 95% confident, the prototype is mandatory.

**Output format:** Memo + 1-sprint prototype plan + decision criteria.