---
phase: 15
slug: multi-signer-backend
status: draft
nyquist_compliant: false
wave_0_complete: false
created: 2026-04-03
---

# Phase 15 — Validation Strategy

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

---

## Test Infrastructure

| Property | Value |
|----------|-------|
| **Framework** | jest 29.x |
| **Config file** | `teressa-copeland-homes/jest.config.ts` |
| **Quick run command** | `npx jest --passWithNoTests --no-coverage` |
| **Full suite command** | `npx jest --passWithNoTests --no-coverage` |
| **Estimated runtime** | ~1 second |

---

## Sampling Rate

- **After every task commit:** Run `npx jest --passWithNoTests --no-coverage`
- **After every plan wave:** Run `npx jest --passWithNoTests --no-coverage`
- **Before `/gsd:verify-work`:** Full suite must be green
- **Max feedback latency:** ~3 seconds

---

## Per-Task Verification Map

| Task ID | Plan | Wave | Requirement | Test Type | Automated Command | File Exists | Status |
|---------|------|------|-------------|-----------|-------------------|-------------|--------|
| 15-01-01 | 01 | 1 | MSIGN-06 | unit+compile | `npx tsc --noEmit && npx jest` | ✅ existing | ⬜ pending |
| 15-01-02 | 01 | 1 | MSIGN-05 | compile+audit | `npx tsc --noEmit` | ✅ existing | ⬜ pending |
| 15-02-01 | 02 | 2 | MSIGN-07 | compile | `npx tsc --noEmit` | ✅ existing | ⬜ pending |
| 15-02-02 | 02 | 2 | MSIGN-07,MSIGN-10,MSIGN-11 | compile | `npx tsc --noEmit` | ✅ existing | ⬜ pending |
| 15-03-01 | 03 | 3 | MSIGN-10,MSIGN-11 | compile | `npx tsc --noEmit` | ❌ W0 | ⬜ pending |

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

---

## Wave 0 Requirements

- [ ] `teressa-copeland-homes/src/lib/signing/__tests__/multi-signer.test.ts` — stubs for MSIGN-10, MSIGN-11 (completion detection, signer-download token creation)

*Existing jest infrastructure covers most phase requirements; one test file needed for completion logic.*

---

## Manual-Only Verifications

| Behavior | Requirement | Why Manual | Test Instructions |
|----------|-------------|------------|-------------------|
| Two signers both receive emails after send | MSIGN-06 | Requires live email delivery | Send doc with 2 signers, verify both inboxes receive signing links |
| Each signer's signing page shows only their fields | MSIGN-07 | Browser + real document required | Sign as signer A, confirm only A's fields visible; repeat for B |
| Final PDF emailed to all parties on completion | MSIGN-10, MSIGN-11 | Requires full signing ceremony | Complete both signers, verify agent + both signers receive completion emails with download links |

*If none: "All phase behaviors have automated verification."*

---

## 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