---
phase: 22
slug: agent-streaming
status: draft
nyquist_compliant: false
wave_0_complete: false
created: 2026-04-01
---

# Phase 22 — Validation Strategy

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

---

## Test Infrastructure

| Property | Value |
|----------|-------|
| **Framework** | Vitest 3.0.x |
| **Config file** | `server/vitest.config.ts`, `ui/vitest.config.ts` |
| **Quick run command** | `pnpm --filter @paperclipai/server test run && pnpm --filter @paperclipai/ui test run` |
| **Full suite command** | `pnpm test run` |
| **Estimated runtime** | ~20 seconds |

---

## Sampling Rate

- **After every task commit:** Run `pnpm --filter @paperclipai/server test run && pnpm --filter @paperclipai/ui test run`
- **After every plan wave:** Run `pnpm test run`
- **Before `/gsd:verify-work`:** Full suite must be green
- **Max feedback latency:** 20 seconds

---

## Per-Task Verification Map

| Task ID | Plan | Wave | Requirement | Test Type | Automated Command | File Exists | Status |
|---------|------|------|-------------|-----------|-------------------|-------------|--------|
| 22-01-01 | 01 | 1 | CHAT-01 | unit (server) | `pnpm --filter @paperclipai/server test run -- chat-stream` | ❌ W0 | ⬜ pending |
| 22-01-02 | 01 | 1 | CHAT-08 | unit (server) | `pnpm --filter @paperclipai/server test run -- chat-routes` | ✅ extend | ⬜ pending |
| 22-01-03 | 01 | 1 | CHAT-10 | unit (server) | `pnpm --filter @paperclipai/server test run -- chat-routes` | ✅ extend | ⬜ pending |
| 22-02-01 | 02 | 1 | CHAT-12 | unit (UI) | `pnpm --filter @paperclipai/ui test run` | ❌ W0 | ⬜ pending |
| 22-02-02 | 02 | 1 | INPUT-05 | unit (UI) | `pnpm --filter @paperclipai/ui test run` | ❌ W0 | ⬜ pending |
| 22-02-03 | 02 | 1 | INPUT-06 | unit (UI) | `pnpm --filter @paperclipai/ui test run` | ❌ W0 | ⬜ pending |
| 22-02-04 | 02 | 1 | AGENT-04 | unit (UI) | `pnpm --filter @paperclipai/ui test run` | ❌ W0 | ⬜ pending |
| 22-03-01 | 03 | 2 | PERF-03 | unit (UI) | `pnpm --filter @paperclipai/ui test run` | ✅ extend | ⬜ pending |

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

---

## Wave 0 Requirements

- [ ] `server/src/__tests__/chat-stream-routes.test.ts` — stubs for CHAT-01, CHAT-12 SSE behavior
- [ ] `ui/src/components/ChatInput.slash-mention.test.tsx` — stubs for INPUT-05, INPUT-06 parsing
- [ ] `ui/src/components/ChatAgentBadge.test.tsx` — stubs for AGENT-04 rendering

*Existing `chat-routes.test.ts` covers CHAT-08 and CHAT-10 with extensions.*

---

## Manual-Only Verifications

| Behavior | Requirement | Why Manual | Test Instructions |
|----------|-------------|------------|-------------------|
| First token appears in under 500ms | PERF-02 | Requires real API latency measurement | Send message, observe time-to-first-token with network tab |
| Agent colors distinguishable across themes | THEME-03 | Visual perception test | Switch themes, verify agent badges are visually distinct |
| 1000+ messages scroll without jank | PERF-03 | Requires real browser scroll performance | Load conversation with 1000+ messages, scroll rapidly, check for frame drops |

---

## 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 < 20s
- [ ] `nyquist_compliant: true` set in frontmatter

**Approval:** pending