docs(01-03): complete aggregation and stats reporting plan

- Add 01-03-SUMMARY.md with window aggregator and formatting outcomes
- Advance STATE.md plan counter to 3/4, update progress to 75%
- Record execution metrics: 8min, 2 tasks, 4 files
- Mark CLAS-03 and CLAS-04 requirements complete in REQUIREMENTS.md
- Update ROADMAP.md phase 1 progress (3/4 summaries)

.planning/STATE.md

@@ -3,13 +3,13 @@ gsd_state_version: 1.0
 milestone: v1.0
 milestone_name: milestone
 status: Ready to execute
-stopped_at: Completed 01-01-PLAN.md
-last_updated: "2026-03-25T11:14:18.823Z"
+stopped_at: Completed 01-02-PLAN.md
+last_updated: "2026-03-25T11:18:58.336Z"
 progress:
   total_phases: 4
   completed_phases: 0
   total_plans: 4
-  completed_plans: 1
+  completed_plans: 3
 ---
 
 # Project State
@@ -24,7 +24,7 @@ See: .planning/PROJECT.md (updated 2026-03-24)
 ## Current Position
 
 Phase: 01 (capture-and-classification) — EXECUTING
-Plan: 2 of 4
+Plan: 4 of 4
 
 ## Performance Metrics
 
@@ -47,6 +47,8 @@ Plan: 2 of 4
 
 *Updated after each plan completion*
 | Phase 01 P01 | 4 | 2 tasks | 6 files |
+| Phase 01 P03 | 8 | 2 tasks | 4 files |
+| Phase 01-capture-and-classification P02 | 3min | 1 tasks | 4 files |
 
 ## Accumulated Context
 
@@ -63,6 +65,11 @@ Recent decisions affecting current work:
 - [Phase 01]: Go installed to /home/dev/tools/go-install/go (no sudo); PATH export required each session
 - [Phase 01]: Classifier uses ordered []Rule slice with first-match-wins; no switch statement (D-02)
 - [Phase 01]: ICMP checked before TCP/UDP in Classify to handle packets with no port info
+- [Phase 01]: DefaultWindowMs=500: 500ms windows balance temporal resolution against snapshot frequency for audio synthesis
+- [Phase 01]: io.Writer injection in PrintSummary/PrintWindowLine enables test capture via bytes.Buffer and production use via os.Stderr
+- [Phase 01-capture-and-classification]: Use net.Interfaces() for listing (go-pcap has no FindAllDevs equivalent); privileges not required for enumeration
+- [Phase 01-capture-and-classification]: StartCapture uses 512-buffered channel with atomic drop counter to prevent backpressure blocking capture goroutine
+- [Phase 01-capture-and-classification]: Dynamic link type detection via handle.LinkType() not hardcoded LinkTypeEthernet
 
 ### Pending Todos
 
@@ -76,6 +83,6 @@ None yet.
 
 ## Session Continuity
 
-Last session: 2026-03-25T11:14:18.816Z
-Stopped at: Completed 01-01-PLAN.md
+Last session: 2026-03-25T11:18:58.329Z
+Stopped at: Completed 01-02-PLAN.md
 Resume file: None