---
phase: 13
slug: setup-impact-preview
status: draft
nyquist_compliant: false
wave_0_complete: false
created: 2026-03-17
---

# Phase 13 — Validation Strategy

> Per-phase validation contract for feedback sampling during execution.

---

## Test Infrastructure

| Property | Value |
|----------|-------|
| **Framework** | bun test (built-in) |
| **Config file** | bunfig.toml |
| **Quick run command** | `bun test` |
| **Full suite command** | `bun test` |
| **Estimated runtime** | ~5 seconds |

---

## Sampling Rate

- **After every task commit:** Run `bun test`
- **After every plan wave:** Run `bun test`
- **Before `/gsd:verify-work`:** Full suite must be green
- **Max feedback latency:** 5 seconds

---

## Per-Task Verification Map

| Task ID | Plan | Wave | Requirement | Test Type | Automated Command | File Exists | Status |
|---------|------|------|-------------|-----------|-------------------|-------------|--------|
| 13-01-01 | 01 | 1 | IMPC-01 | unit | `bun test` | ❌ W0 | ⬜ pending |
| 13-01-02 | 01 | 1 | IMPC-02 | unit | `bun test` | ❌ W0 | ⬜ pending |
| 13-01-03 | 01 | 1 | IMPC-03 | unit | `bun test` | ❌ W0 | ⬜ pending |
| 13-01-04 | 01 | 1 | IMPC-04 | unit | `bun test` | ❌ W0 | ⬜ pending |

*Status: ⬜ pending · ✅ green · ❌ red · ⚠️ flaky*

---

## Wave 0 Requirements

- [ ] Test stubs for IMPC-01 through IMPC-04 impact delta computation
- [ ] Test fixtures for setup items and thread candidates with weight/price data

*If none: "Existing infrastructure covers all phase requirements."*

---

## Manual-Only Verifications

| Behavior | Requirement | Why Manual | Test Instructions |
|----------|-------------|------------|-------------------|
| Setup dropdown renders in thread header | IMPC-01 | Visual/UI placement | Open a thread, verify dropdown appears with all setups listed |
| Delta labels display correctly (add vs replace) | IMPC-03 | Visual formatting | Select setup with no category match, verify "add" label |
| Missing weight shows "-- (no weight data)" | IMPC-04 | Visual indicator | Add candidate with no weight, verify placeholder text |

---

## Validation Sign-Off

- [ ] All tasks have `<automated>` verify or Wave 0 dependencies
- [ ] Sampling continuity: no 3 consecutive tasks without automated verify
- [ ] Wave 0 covers all MISSING references
- [ ] No watch-mode flags
- [ ] Feedback latency < 5s
- [ ] `nyquist_compliant: true` set in frontmatter

**Approval:** pending