docs(05-01): complete cue scheduler plan — SUMMARY, STATE, ROADMAP updated

- 05-01-SUMMARY.md created with task commits, decisions, next-phase readiness
- STATE.md advanced to plan 2/3, progress 88%, decisions logged
- ROADMAP.md updated: phase 5 in progress (1/3 summaries)
- REQUIREMENTS.md: SHW-03 marked complete

.planning/STATE.md

@@ -2,15 +2,15 @@
 gsd_state_version: 1.0
 milestone: v1.0
 milestone_name: milestone
-status: verifying
-stopped_at: Phase 5 UI-SPEC approved
-last_updated: "2026-04-07T09:07:03.684Z"
+status: executing
+stopped_at: Completed 05-live-show-execution/05-01-PLAN.md
+last_updated: "2026-04-07T10:11:59.087Z"
 last_activity: 2026-04-07
 progress:
   total_phases: 7
   completed_phases: 4
-  total_plans: 14
-  completed_plans: 14
+  total_plans: 17
+  completed_plans: 15
   percent: 0
 ---
 
@@ -21,13 +21,13 @@ progress:
 See: .planning/PROJECT.md (updated 2026-04-05)
 
 **Core value:** Load a song, build a synchronized light show, play it back live — with precise control over every effect on every device.
-**Current focus:** Phase 04 — timeline-editor
+**Current focus:** Phase 05 — live-show-execution
 
 ## Current Position
 
-Phase: 5
-Plan: Not started
-Status: Phase complete — ready for verification
+Phase: 05 (live-show-execution) — EXECUTING
+Plan: 2 of 3
+Status: Ready to execute
 Last activity: 2026-04-07
 
 Progress: [░░░░░░░░░░] 0%
@@ -66,6 +66,7 @@ Progress: [░░░░░░░░░░] 0%
 | Phase 04-timeline-editor P02 | 9 | 2 tasks | 6 files |
 | Phase 04-timeline-editor P03 | 2 | 1 tasks | 3 files |
 | Phase 04-timeline-editor P04 | 4min | 2 tasks | 4 files |
+| Phase 05-live-show-execution P01 | 152 | 2 tasks | 1 files |
 
 ## Accumulated Context
 
@@ -110,6 +111,8 @@ Recent decisions affecting current work:
 - [Phase 04-timeline-editor]: BeatGrid.load() normalizes API field variants: beats/beat_times and tempo/tempo_bpm — actual API returns 'beats'/'tempo' not the plan's expected field names
 - [Phase 04-timeline-editor]: UpdateParamsCommand uses currentShowId (module-level var) not this._showId — matches existing command pattern in commands.js
 - [Phase 04-timeline-editor]: Color input fires 'change' not 'input' to create command — avoids flooding command history during native color picker drag
+- [Phase 05-live-show-execution]: WebSocket cue scheduler: LOOKAHEAD=60ms inline in tick handler, is_playing gate prevents pause/seek fires, seek rebuilds fired_ids via set comprehension
+- [Phase 05-live-show-execution]: active_cue tracks already-fired blocks within duration window so preview stays lit; past-cue threshold 100ms for silent skip without UDP dispatch
 
 ### Pending Todos
 
@@ -123,8 +126,8 @@ None yet.
 
 ## Session Continuity
 
-Last session: 2026-04-07T09:07:03.676Z
-Stopped at: Phase 5 UI-SPEC approved
-Resume file: .planning/phases/05-live-show-execution/05-UI-SPEC.md
+Last session: 2026-04-07T10:11:59.079Z
+Stopped at: Completed 05-live-show-execution/05-01-PLAN.md
+Resume file: None
 
 Next action: `/gsd:plan-phase 1`