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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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Proposal: EQ Device Auto-Switch UX

Intent

Device-specific EQ presets never apply at app startup because cargarPersistido() does not query the current audio device, leaving _dispositivoActualId null. Users must physically reconnect a device to trigger preset resolution. Additionally, the settings device list lacks connection indicators, rename capability, and inline EQ editing — making multi-device EQ management opaque and tedious.

Scope

In Scope

Fix startup device query in cargarPersistido() to seed _dispositivoActualId
Add nombresDispositivos persistence (eq_nombres_dispositivos_v1 SharedPreferences key)
Expose rename API in EstadoEcualizador (set/get custom device name)
Connection status indicator (green dot) per device row in settings
Device display name fallback chain: customName > platformName > deviceId
Bottom sheet modal for device rename + embedded EcualizadorWidget
Tests for all new/changed behavior

Out of Scope

Export schema v4 extension for device names (deferred)
Changing Kotlin/platform-side audio device callback logic
Modifying EcualizadorWidget internals
Offline/background device switching behavior

Capabilities

New Capabilities

eq-device-rename: Persist and manage custom device display names via SharedPreferences

Modified Capabilities

None (no existing specs)

Approach

Bug fix: Call obtenerDispositivoActual() inside cargarPersistido() after _configurarSuscripcionDispositivo() when multi-device is enabled. Seed _dispositivoActualId, bootstrap preset if first-seen, re-resolve active preset.

Rename persistence: New Map<String, String> stored as JSON under eq_nombres_dispositivos_v1 in ServicioEcualizador. EstadoEcualizador exposes renombrarDispositivo(id, nombre) and obtenerNombreDispositivo(id).

Settings UI: Rewrite _SeccionEcualizadorAvanzado device rows with connection dot + display name fallback. Tap opens showModalBottomSheet (existing pattern: showDragHandle: true, isScrollControlled: true) containing rename TextField + embedded EcualizadorWidget.

Affected Areas

Area	Impact	Description
`lib/estado/estado_ecualizador.dart`	Modified	Fix init + rename API + expose nombresDispositivos
`lib/servicios/servicio_ecualizador.dart`	Modified	New SP key for device names
`lib/pantallas/pantalla_ajustes.dart`	Modified	Rewrite device section + new modal widget
`test/`	New	Tests for bug fix, rename logic, display name fallback

Risks

Risk	Likelihood	Mitigation
`obtenerDispositivoActual()` fails on edge devices	Low	Existing `builtin_speaker` fallback handles it
Bottom sheet clips EQ widget	Low	Use `isScrollControlled: true` (established pattern)
nombresDispositivos not in export schema	Med	Defer to v4; document omission
Platform `nombre` is null/empty	Med	Fallback chain: customName > platformName > deviceId

Rollback Plan

All changes are additive. Revert the commit(s). The new SP key (eq_nombres_dispositivos_v1) is ignored if code referencing it is removed. The startup device query is a single method call addition — removing it restores previous (broken) behavior without data loss.

Dependencies

None. All required APIs (obtenerDispositivoActual, EcualizadorWidget, showModalBottomSheet pattern) already exist.

Success Criteria

On app startup with multi-device enabled, the correct device preset is applied without user interaction
Device list in settings shows connection status indicator for active device
Users can rename devices; names persist across app restarts
Tapping a device opens bottom sheet with rename + EQ editing
Display name shows customName > platformName > deviceId fallback
All new behavior has passing tests (Strict TDD)

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