# Phase Proposal: Pxx-[slug]

**Date**: YYYY-MM-DD  
**Idea Version**: vX.Y  
**Status**: planning | running | done | failed

---

## 1) Intent
- What is this phase trying to prove/disprove?

## 1.5 Input Handoff (from `research/idea.md`)
- Candidate selected (I*):
- Locked metric/tuning protocol summary:
- Baseline set to keep fair comparison:
- Top risks carried from discover:
- Blocking open questions:

## 2) Target IDs (must come from `research/idea.md`)
- Hypotheses: [H1, ...]
- Falsification criteria: [F1, ...]
- Claims supported: [C1, ...]

## 3) Scope
### In scope
- ...

### Out of scope
- ...

## 4) Success Criteria (phase-level)
- ...

## 5) Kill / Stop Criteria (phase-level)
- ...

## 6) Dependencies / Prereqs
- Data:
- Compute:
- Codebase / tooling:

## 7) Key Risks
- Leakage risk:
- Baseline fairness:
- Reproducibility gaps:
- Statistical power:

## 8) Deliverables
- `experiment-plan.md`
- `tasks.md`
- `experiment-report.md`
- `verify.md`