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.

openspec/changes/multi-device-eq/verify-report.md

@@ -0,0 +1,17 @@
+# Verification Report: multi-device-eq
+
+**Change**: multi-device-eq
+**Date**: 2026-06-27
+**Mode**: Strict TDD
+**Verdict**: PASS WITH WARNINGS
+
+## Summary
+
+- Test suite: 184/184 PASS
+- flutter analyze: No issues
+- Tasks complete: 46/46
+- Spec scenarios: 27 PASS, 1 PARTIAL
+- ADRs compliant: 6/6
+- CRITICAL issues: 0
+- WARNING issues: 2
+- SUGGESTION items: 3