---
phase: 4
slug: power-user-features
status: draft
nyquist_compliant: false
wave_0_complete: false
created: 2026-03-26
---

# Phase 4 — Validation Strategy

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

---

## Test Infrastructure

| Property | Value |
|----------|-------|
| **Framework** | go test |
| **Config file** | none — standard Go test toolchain |
| **Quick run command** | `go test ./...` |
| **Full suite command** | `go test -v -count=1 ./...` |
| **Estimated runtime** | ~5 seconds |

---

## Sampling Rate

- **After every task commit:** Run `go test ./...`
- **After every plan wave:** Run `go test -v -count=1 ./...`
- **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 |
|---------|------|------|-------------|-----------|-------------------|-------------|--------|
| 4-01-01 | 01 | 1 | CAPT-05 | unit | `go test ./capture/ -run TestBPFFilter` | ❌ W0 | ⬜ pending |
| 4-01-02 | 01 | 1 | CAPT-05 | unit | `go test ./capture/ -run TestBPFValidation` | ❌ W0 | ⬜ pending |
| 4-02-01 | 02 | 1 | CAPT-06 | unit | `go test ./capture/ -run TestPcapRead` | ❌ W0 | ⬜ pending |
| 4-02-02 | 02 | 1 | CAPT-06 | unit | `go test ./aggregate/ -run TestTimestampWindow` | ❌ W0 | ⬜ pending |
| 4-03-01 | 03 | 2 | CAPT-05,CAPT-06 | integration | `go test ./... -run TestCLIFlags` | ❌ W0 | ⬜ pending |

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

---

## Wave 0 Requirements

- [ ] `capture/capture_test.go` — stubs for BPF filter and pcap reading tests
- [ ] `aggregate/window_test.go` — stubs for timestamp-based windowing tests
- [ ] `cmd/netsynth/main_test.go` — stubs for CLI flag interaction tests

*Existing go test infrastructure covers framework needs.*

---

## Manual-Only Verifications

| Behavior | Requirement | Why Manual | Test Instructions |
|----------|-------------|------------|-------------------|
| Live BPF filter on real interface | CAPT-05 | Requires root + network traffic | Run `sudo netsynth -i eth0 --filter "port 53"`, generate DNS traffic, verify only DNS in output |
| Pcap file produces audible MP3 | CAPT-06 | Audio quality is subjective | Run `netsynth --read test.pcap -o out.mp3`, play file, confirm distinct tones |

---

## 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