docs(03): create phase plan

.planning/ROADMAP.md

@@ -62,7 +62,11 @@ Plans:
   1. User runs `netsynth -i eth0 -o out.mp3`, generates traffic, presses Ctrl+C, and receives a valid playable MP3 at `out.mp3`
   2. Unrecognized traffic patterns are automatically assigned distinct drone tones — unknown traffic is not silent or merged into a single undifferentiated layer
   3. The MP3 audio reflects the actual traffic mix — a session with mostly DNS sounds different from one with mostly HTTPS
-**Plans**: TBD
+**Plans:** 2 plans
+
+Plans:
+- [ ] 03-01-PLAN.md — Extend TrafficClass to 14 classes (hash-bucketed unknown-1 through unknown-4), update synth config with dissonant tones
+- [ ] 03-02-PLAN.md — Wire capture pipeline into RunSynthesis, encoding feedback messages, end-to-end MVP verification
 
 ### Phase 4: Power User Features
 **Goal**: Users can scope capture with BPF expressions and sonify historical pcap files
@@ -77,11 +81,11 @@ Plans:
 ## Progress
 
 **Execution Order:**
-Phases execute in numeric order: 1 → 2 → 3 → 4
+Phases execute in numeric order: 1 -> 2 -> 3 -> 4
 
 | Phase | Plans Complete | Status | Completed |
 |-------|----------------|--------|-----------|
 | 1. Capture and Classification | 4/4 | Complete   | 2026-03-25 |
 | 2. Audio Synthesis Engine | 3/3 | Complete   | 2026-03-26 |
-| 3. Pipeline Integration and MVP | 0/? | Not started | - |
+| 3. Pipeline Integration and MVP | 0/2 | In progress | - |
 | 4. Power User Features | 0/? | Not started | - |