docs(openspec): add SDD artifact trail for recent alarm and EQ changes

Persist the exploration, proposal, spec, design, tasks, and verify/archive reports produced during the multi-device EQ, alarm-countdown, and notification-visual-polish SDD cycles.
2026-07-04 12:42:11 +02:00
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+# Tasks: Multi-Device Equalizer
+
+## Review Workload Forecast
+
+| Field | Value |
+|-------|-------|
+| Estimated changed lines | 700–950 |
+| 400-line budget risk | High |
+| Chained PRs recommended | Yes |
+| Delivery strategy | ask-on-risk |
+
+## Execution Summary
+
+**Status**: ALL PHASES COMPLETE — 46/46 tasks done
+
+### Phase 1: Foundation — Model and Service Interface
+- [x] 1.1–1.6: TipoDispositivo enum, DispositivoAudio value class, abstract ServicioDispositivoAudio, FakeServicioDispositivoAudio
+
+### Phase 2: Platform Channel — Android
+- [x] 2.1–2.4: MethodChannel getActiveDevice, EventChannel stream, MainActivity integration, BT MAC stable keys
+
+### Phase 3: Platform Channel — iOS
+- [x] 3.1–3.3: AudioDevicesPlugin.swift, AppDelegate registration, toggle-disabled path
+
+### Phase 4: EQ Service — Persistence Layer
+- [x] 4.1–4.4: SP key CRUD, ConfiguracionEcualizador extension, storage budget validation
+
+### Phase 5: State Layer — 4-Level Resolution
+- [x] 5.1–5.9: Resolution hierarchy, device stream subscription, first-seen device init, toggle isolation
+
+### Phase 6: Export/Import v3
+- [x] 6.1–6.3: v3 schema with device/matrix fields, v2 backward compat, future-guard
+
+### Phase 7: Settings UI
+- [x] 7.1–7.3: _SeccionEcualizadorAvanzado widget, toggle + device list, l10n keys (6 new)
+
+### Phase 8: Integration Verification
+- [x] 8.1–8.5: 184/184 tests pass, flutter analyze clean, dart format applied
+
+(See Engram observation #2188 for complete task breakdown with all checkboxes and detailed phase notes)