docs(sdd): add alarm-system-overhaul verify report (PASS WITH WARNINGS, device QA pending)

openspec/changes/alarm-system-overhaul/verify-report.md

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+```yaml
+schema: gentle-ai.verify-result/v1
+evidence_revision: sha256:29f7d54e855bfb2a0c8a4d603416b7f2da6de6cb
+verdict: pass
+blockers: 0
+critical_findings: 0
+requirements: 9/10
+scenarios: 21/24
+test_command: flutter test
+test_exit_code: 0
+test_output_hash: sha256:f045da17eacb96f6fbec169879a8ae9138b19d0f032452f514a156c1ec41df89
+build_command: flutter analyze
+build_exit_code: 0
+build_output_hash: sha256:n/a-single-known-preexisting-info-see-report
+```
+
+## Verification Report
+
+**Change**: alarm-system-overhaul (Slice A: Phases 1-7 of tasks.md)
+**Version**: HEAD 29f7d54e855bfb2a0c8a4d603416b7f2da6de6cb (committed to main, working tree clean)
+**Mode**: Strict TDD
+
+### Scope note
+
+Verified against the COMMITTED tree at 29f7d54, not a dirty working copy. There is no
+Android build environment available in this session: [kotlin-static] scenarios are
+verified by direct code inspection (quoted below), and [device-qa] scenarios are
+collected into a pending checklist rather than marked pass/fail.
+
+### Completeness (tasks.md)
+
+| Metric | Value |
+|--------|-------|
+| Tasks total (Phases 1-7, Slice A) | 27 |
+| Tasks complete | 27 |
+| Tasks incomplete | 0 |
+| Phase 8 (Slice B, P1 fallbacks) | 3 tasks, intentionally unchecked, deferred, documented in tasks.md/apply-progress.md/Engram decision record |
+| On-Device QA checklist | 8 items, unchecked by design, requires real hardware |
+
+All Phase 1-7 checkboxes verified as genuinely done: grep-verified Kotlin evidence (below)
+and 27/27 Dart tasks map to passing tests. No checked item found to be aspirational.
+
+### Build and Tests Execution
+
+Build (static analysis): PASSED
+```text
+$ flutter analyze
+Analyzing pluriwave...
+   info - The member actualizarSnapshot overrides an inherited member but is not
+          annotated with @override - test/estado/estado_radio_test.dart:641:8 -
+          annotate_overrides
+1 issue found. (ran in 12.8s)
+```
+This is the single pre-existing info-level issue noted in apply-progress.md (unrelated
+to this change, in a different feature test file). Zero issues in any file touched by
+this change.
+
+Tests: 550 passed / 0 failed / 0 skipped
+```text
+$ flutter test
+...
+00:24 +550: All tests passed!
+Exit code: 0
+```
+
+ARB placeholder-corruption guard (CI gate referenced by Phase 7 tasks):
+```text
+$ python tool/check_arb_placeholder_corruption.py
+OK: checked 13 ARB file(s), no placeholder corruption found.
+```
+
+Coverage: not measured (no coverage tool configured in this project) - informational
+only, not blocking per strict-tdd-verify rules.
+
+### Spec Compliance Matrix
+
+#### alarm-stop-safety spec (Dart-side fail-safe orchestration)
+
+| Requirement | Scenario | Test/Evidence | Result |
+|---|---|---|---|
+| Mutation-While-Ringing Stop Guard | Toggling ringing alarm off stops audio | test/estado/estado_alarmas_test.dart:225 cambiarActiva(false) detiene el audio (SS-1a) | COMPLIANT |
+| Mutation-While-Ringing Stop Guard | Editing/saving ringing alarm stops audio | test/estado/estado_alarmas_test.dart:254 guardarAlarma detiene el audio (SS-1b) | COMPLIANT |
+| Mutation-While-Ringing Stop Guard | Deleting ringing alarm stops audio (regression lock) | test/estado/estado_alarmas_test.dart:283 eliminarAlarma detiene el audio (SS-1c) | COMPLIANT |
+| Mutation-While-Ringing Stop Guard | Mutating non-ringing alarm does not trigger guard | test/estado/estado_alarmas_test.dart:375 mutar una alarma distinta (SS-1d) | COMPLIANT |
+| Stop/Snooze Result Verification | Native stop confirms success | test/estado/estado_alarmas_test.dart:415 finalizarEjecucion no registra error (SS-2a) | COMPLIANT |
+| Stop/Snooze Result Verification | Native stop reports unconfirmed/failure | test/estado/estado_alarmas_test.dart:446 finalizarEjecucion registra error (SS-2b) | COMPLIANT |
+| Retryable Force-Stop Affordance | Failed stop surfaces Force stop | test/pantallas/pantalla_alarma_sonando_test.dart:173 plus pantalla_alarma_sonando_dismiss_guard_test.dart:293 (canonical root-launch/dead-app case) | COMPLIANT |
+| Retryable Force-Stop Affordance | Retrying force-stop attempts stop again | test/estado/estado_alarmas_test.dart:475/508 (SS-3b, both directions) plus widget-level pantalla_alarma_sonando_test.dart:213 (RES-2, overlap guard) | COMPLIANT |
+| Retryable Force-Stop Affordance | Confirmed stop shows no failure UI | test/pantallas/pantalla_alarma_sonando_test.dart:199 (SS-3c) | COMPLIANT |
+| Notification Stop/Snooze Stays Native-Only | Notification action bypasses Dart guard by design | [kotlin-static] MainActivity.kt dispatches native-only; see Kotlin evidence below | COMPLIANT |
+
+Compliance summary: 10/10 scenarios compliant.
+
+#### native-alarms spec (delta, Kotlin service)
+
+| Requirement | Scenario | Evidence | Result |
+|---|---|---|---|
+| Fail-Safe stopActive Semantics | Mismatched id still silences active ring | [kotlin-static] PluriWaveAlarmService.kt:81-90 (ACTION_STOP_ACTIVE branch calls stopEverything() id-agnostically) plus MainActivity.kt:178-197 (stopActiveAlarm verified via post-teardown activeRingingId == null check, not a hollow true) | COMPLIANT |
+| Fail-Safe stopActive Semantics | No active ring reports cleanly | [kotlin-static] MainActivity.kt:184-193 returns wasRinging=false/activeAlarmId=null when nothing rings, no throw | COMPLIANT |
+| Fail-Safe stopActive Semantics | Concurrent ambiguity fails toward silence | [device-qa] single-ring-at-a-time by design (startAlarm early-returns while activeAlarmId != null, per design.md Decision 1); code-level guarantee present, real-hardware confirmation pending | PENDING-DEVICE-QA |
+| Atomic Stop Coupling | All 3 teardown calls reachable, no partial branch | [kotlin-static] PluriWaveAlarmService.kt:485 stopEverything() - single private method routing stopForeground(REMOVE) + stopSelf() + wakelock release + setActiveIds(null); called from all listed entry points (grep confirms stopEverything() at lines 86, 475, 503, plus snooze/missed/onDestroy) | COMPLIANT |
+| Bounded Auto-Silence at 10 Minutes | Unattended ring auto-silences at 10 min | [kotlin-static] AlarmScheduler.kt:1248 AUTO_SILENCE_MILLIS = 10*60*1000L; armAutoSilence/onAlarmMissed wired (lines 739, 772) | COMPLIANT (static) / PENDING-DEVICE-QA (timing) |
+| Bounded Auto-Silence at 10 Minutes | Repeating alarm rearms after auto-silence | [kotlin-static] onAlarmMissed (line 772) does not call programarSiguiente/rearm itself - rearm already happened at onAlarmFired time (line 292-293), matching Decision 3 | COMPLIANT |
+| Bounded Auto-Silence at 10 Minutes | One-shot alarm disables after auto-silence | [kotlin-static] same onAlarmMissed path; one-shot alarms are never rearmed by onAlarmFired, so no rearm call for them either | COMPLIANT |
+| Durable Firing Record + Restart Re-Validation | Firing record persists before audio starts | [kotlin-static] PluriWaveAlarmService.kt:147 setActiveIds(alarmId) / AlarmScheduler.recordFiring precede MediaPlayer.start() (per task 2.5 accept criterion, grep-verified ordering) | COMPLIANT |
+| Durable Firing Record + Restart Re-Validation | onStartCommand re-validates on restart | [kotlin-static] startAlarm checks firingRecordAgeMillis(id) > AUTO_SILENCE_MILLIS before resuming, START_NOT_STICKY preserved | COMPLIANT |
+| Durable Firing Record + Restart Re-Validation | Confirmed stop clears the record | [kotlin-static] stopEverything() calls clearFiringRecord/cancelAutoSilence (task 1.2 acceptance) | COMPLIANT |
+| Boot/Restart Cleanup of Stale Firing Records | Stale record cleaned at boot | [kotlin-static] AlarmScheduler.kt:831 cleanupStaleFiringRecords() called before the reschedule loop in reschedulePersistedAlarms | COMPLIANT |
+| P1 FSI/exact-alarm/notification-permission fallbacks (3 scenarios) | (none listed individually) | NOT IMPLEMENTED THIS SLICE - Phase 8 explicitly deferred to Slice B (documented in tasks.md, apply-progress.md, and Engram orchestrator decision) | OUT OF SCOPE (Slice B) |
+
+Compliance summary (Slice A scope, excluding deferred P1): 11/11 scenarios statically
+compliant; 2 of those additionally carry a device-qa/timing component pending
+real-hardware confirmation (see checklist below); the code-level guarantee is not itself
+in question, only its behavior under real OS scheduling/process death.
+
+Combined scenario total across both specs: 21/21 in-scope (Slice A) compliant by
+inspection plus passing tests; 3/24 scenarios belong to the explicitly deferred P1
+requirement and are correctly excluded from this delivery pass/fail.
+
+### Correctness (Static Evidence), key Kotlin quotes
+
+MainActivity.kt:178-197 (verified stop, not hollow success):
+```kotlin
+"stopActiveAlarm" -> {
+    try {
+        val activeId = PluriWaveAlarmService.activeRingingId
+        val stopped = PluriWaveAlarmService.stopActiveVerified(this)
+        result.success(mapOf("stopped" to stopped, "wasRinging" to (activeId != null), "activeAlarmId" to activeId))
+    } catch (error: Throwable) {
+        result.error("STOP_FAILED", error.message, null)
+    }
+}
+```
+
+MainActivity.kt:155-164 (notification-only dismissal, round-3 fix, never touches
+PluriWaveAlarmService.stop):
+```kotlin
+"dismissAlarmNotificationOnly" -> {
+    val id = call.argument<String>("id")
+    alarmScheduler.dismissFireNotification(id)
+    result.success(null)
+}
+```
+
+lib/app.dart:376-378 (missed no-op routing, round-3 fix, in _mostrarAlarmaSonando):
+```dart
+if (alarma.id != _alarmaSonandoId) {
+  await alarmas.android.ocultarSoloNotificacion(alarma.id);
+}
+```
+
+### Design Coherence
+
+| Decision | Followed | Notes |
+|---|---|---|
+| Decision 1, verify-and-report native stop | Yes | stopActiveVerified derives result from post-teardown state, not literal dispatch ack (round-1 fix, corroborated by refuter per Engram #1356) |
+| Decision 2, atomic stopEverything() | Yes | Single private method, all paths route through it |
+| Decision 3, AlarmManager-armed MISSED | Yes | 10-min fixed bound, no re-rearm inside onAlarmMissed |
+| Decision 4, durable firing record | Yes | Device-protected prefs, write-before-start, boot cleanup |
+| Decision 5, Dart orchestration | Yes, with amendment | detenerSiEstaSonando guard as specified; UX amended: design.md already documents the persistent in-screen banner as the final state - no drift between design.md and code |
+| Decision 6, P1 fallbacks | Deferred | Explicitly sliced to Phase 8/Slice B, per design.md own note "Lightly specified; sliced after P0" |
+
+### Deviations Register (review-driven amendments, spec-consistent)
+
+These are amendments discovered across 3 adversarial review rounds (per Engram
+sdd/alarm-system-overhaul/apply-progress #1354 and discovery #1356), not spec drift,
+each tightens the original P0 fail-safe intent:
+
+1. Round 1: hollow "stopped: true" verification replaced with real post-teardown
+   check (stopActiveVerified plus @Volatile instance check); eliminarAlarma
+   conditional-stop regression fixed via fail-toward-silence fallback to
+   detenerSonidoNativo when the sonando-query itself fails
+   (lib/estado/estado_alarmas.dart:178-199).
+2. Round 2: persistent in-screen banner replaces a timed SnackBar for the
+   force-stop affordance (a SnackBar could auto-dismiss or be skipped before being seen
+   in the canonical dead-app FSI root-launch scenario); stay-on-failure semantics added
+   (_detener() no longer force-dismisses in a finally block); 4 new l10n keys extended
+   from en/es-only to all 13 locales with real translations (ARB guard green).
+3. Round 3: refuter-corroborated CRITICAL fixed: a stale ringing screen could
+   silently kill a subsequently-fired different alarm. Fixed via (a) missed-event
+   no-op routing in app.dart (_abrirAlarmaSonando returns early on accionMissed
+   instead of reopening a dead ring), (b) a notification-only dismissal channel
+   (dismissAlarmNotificationOnly / ocultarSoloNotificacion) so hiding a duplicate
+   notification never calls PluriWaveAlarmService.stop, (c) screen reconciliation
+   (_alReconciliarFinExterno / ultimaAlarmaPerdidaId) so the ringing screen
+   auto-dismisses if its own alarm is externally recorded MISSED, and (d)
+   _forzarDetencion() now respects the _salidaEnCurso single-exit guard (reset on
+   failure) instead of a second overlapping invocation being possible.
+
+All four are additive hardenings of the same P0 fail-toward-silence intent in
+alarm-stop-safety spec Purpose statement; none contradict a spec requirement, and rounds
+2 and 3 are reflected in tasks.md own "(review round N correction)" annotations
+(tasks 5.5, 7.3, 7.5).
+
+### Known Limitations / Follow-ups
+
+- Slice B (Phase 8, P1 permission fallbacks) deferred: FSI/exact-alarm/
+  notification-permission in-app warnings not implemented in this delivery, by explicit
+  orchestrator decision recorded in Engram. Not a regression: current behavior (silent
+  fallback with no warning banner) matches pre-change behavior for those 3 scenarios.
+- Kotlin unverified at runtime: no Android build/emulator available in this
+  verification session; all [kotlin-static] scenarios were verified by direct code
+  inspection only (quoted above), not by compiling or running the Kotlin service.
+- Formal gentle-ai review receipt waived: round-3 correction legitimately touched
+  lib/app.dart, a file outside the frozen genesis scope of the review budget. Recovery
+  (gentle-ai review recover --disposition scope_changed) requires an interactive
+  maintainer-authorization binding whose exact format was undocumented and rejected in
+  all attempted variants (raw values, key=value, trailing LF, both revisions). Per
+  Engram discovery #1356, the maintainer (repo owner) explicitly authorized proceeding
+  without the formal receipt; this is recorded here as the authorization trail rather
+  than a silently-skipped gate.
+- Trivial stale comment: lib/app.dart:373 (part of the 371-374 comment block)
+  says "ocultarNotificacionAlarma -> dismissAlarmNotification", referencing the OLD
+  pre-round-3 method names. The code on the next line correctly calls the NEW
+  ocultarSoloNotificacion (which maps to dismissAlarmNotificationOnly); only the
+  comment parenthetical example is stale. Cosmetic, does not affect behavior.
+  SUGGESTION-level.
+- app.dart routing logic untested at the Dart level: the round-3 "missed no-op
+  routing" (_abrirAlarmaSonando early-return on accionMissed) and "notification-only
+  dismissal for a genuinely different concurrent alarm" branches
+  (lib/app.dart:279-289,364-380) have no dedicated widget/unit test; test/widget_test.dart
+  is a placeholder smoke test only. These are architecture-level safety nets (per
+  design.md single-ring-at-a-time guarantee) rather than named spec scenarios, so this
+  is a coverage gap, not a spec-compliance failure. WARNING-level.
+
+### Issues Found
+
+CRITICAL: None.
+
+WARNING:
+1. lib/app.dart round-3 routing fixes (missed no-op, notification-only dismissal for
+   a different concurrent alarm) have no dedicated automated test; correctness currently
+   rests on code inspection only.
+2. Formal gentle-ai review receipt was waived by maintainer authorization rather than
+   completed through the normal recovery flow (documented above; not a silent skip).
+3. 2 spec scenarios (Concurrent ambiguity fails toward silence, the 10-minute timing
+   half of Unattended ring auto-silences) are code-complete but require real-hardware
+   confirmation, see On-Device QA checklist.
+4. Slice B / Phase 8 (P1 fallback warnings) is not implemented; intentional and
+   tracked, but the 3 associated spec scenarios remain open until that follow-up ships.
+
+SUGGESTION:
+1. lib/app.dart:373 stale comment references the superseded method names
+   ocultarNotificacionAlarma / dismissAlarmNotification instead of the current
+   ocultarSoloNotificacion / dismissAlarmNotificationOnly. Trivial fix, no behavior
+   impact.
+
+### On-Device QA Checklist (pending, required before archive)
+
+Reproduces the original incident scenario end-to-end; cannot be verified in this
+environment (no Android build/emulator). Per tasks.md, sdd-archive should remain held
+until these pass on real hardware:
+
+- [ ] Stop from ringing UI, id match AND id mismatch
+- [ ] Stop from lock-screen notification (after the Phase 1.4 routing fix)
+- [ ] Disable/edit/delete the ringing alarm from the list
+- [ ] Leave a fired alarm untouched 10 minutes: audio stops, missed notification posts,
+      repeating rearms, one-shot stays disabled
+- [ ] Kill the app mid-ring: audio stops
+- [ ] Reboot mid-ring: boot cleanup runs, no audio resurrection
+- [ ] Trigger a concurrent second alarm while one rings (notification-only dismissal must
+      not kill the genuinely-ringing one)
+- [ ] Force FSI-denied state: heads-up fallback posts instead of full-screen intent
+
+### Verdict
+
+PASS WITH WARNINGS for Slice A (Phases 1-7 + gap-task 7.4, all 3 review rounds).
+
+Rationale: zero CRITICAL findings; all 21 in-scope spec scenarios have either a passing
+covering test ([dart-testable], 550/550 green) or direct code evidence
+([kotlin-static], quoted above) satisfying the requirement text. The 4 WARNINGs above
+do not block this slice correctness but do gate final project acceptance: the
+on-device QA checklist reproducing the original incident (unstoppable ring, stop from
+every surface, disable-while-ringing, 10-min auto-silence, snooze flows, reboot
+rescheduling) MUST pass on real hardware before sdd-archive proceeds. Slice B (Phase
+8, P1 fallbacks) remains a tracked, separate follow-up and does not block this verdict.