---
gsd_state_version: 1.0
milestone: v1.0
milestone_name: milestone
status: planning
stopped_at: Phase 1 context gathered
last_updated: "2026-03-25T10:14:54.593Z"
last_activity: 2026-03-24 — Roadmap created, ready to plan Phase 1
progress:
  total_phases: 4
  completed_phases: 0
  total_plans: 0
  completed_plans: 0
  percent: 0
---

# Project State

## Project Reference

See: .planning/PROJECT.md (updated 2026-03-24)

**Core value:** Network traffic patterns are instantly recognizable as distinct sounds — a ping sounds different from HTTPS noise, which sounds different from a port scan.
**Current focus:** Phase 1 — Capture and Classification

## Current Position

Phase: 1 of 4 (Capture and Classification)
Plan: 0 of ? in current phase
Status: Ready to plan
Last activity: 2026-03-24 — Roadmap created, ready to plan Phase 1

Progress: [░░░░░░░░░░] 0%

## Performance Metrics

**Velocity:**

- Total plans completed: 0
- Average duration: —
- Total execution time: —

**By Phase:**

| Phase | Plans | Total | Avg/Plan |
|-------|-------|-------|----------|
| - | - | - | - |

**Recent Trend:**

- Last 5 plans: —
- Trend: —

*Updated after each plan completion*

## Accumulated Context

### Decisions

Decisions are logged in PROJECT.md Key Decisions table.
Recent decisions affecting current work:

- Use `github.com/gopacket/gopacket` v1.5.0 (community fork) — NOT `google/gopacket` which is unmaintained
- Use `github.com/packetcap/go-pcap` for live capture (pure Go, no CGo for capture layer)
- Use `github.com/sjzar/go-lame` v0.0.9 for MP3 encoding (embeds LAME C source, CGo required at build time only)
- Audio synthesis: hand-rolled additive sine oscillators + EMA amplitude smoothing (no external audio library)
- Frequency table: register-separated harmonics (low drones = bulk traffic, mid = control, high = interactive)

### Pending Todos

None yet.

### Blockers/Concerns

- Phase 2: Frequency mapping requires subjective listening validation — specific Hz values not determined by research; must test during Phase 2
- Phase 3: Auto-clustering algorithm choice (hash-bucketing vs k-means) deferred until synthesis engine exists to evaluate perceptual results
- macOS privilege model (BPF device vs CAP_NET_RAW) not verified by research — flag if macOS is a target during Phase 1

## Session Continuity

Last session: 2026-03-25T10:14:54.587Z
Stopped at: Phase 1 context gathered
Resume file: .planning/phases/01-capture-and-classification/01-CONTEXT.md