squad: log release v3.25.0 session

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

Author: Copilot

.squad/log/2026-03-23T23-release-v3.25.0.md

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+# Release Session: v3.25.0
+
+**Date:** 2026-03-23  
+**Status:** Complete
+
+## Summary
+
+Test audit session completed. PostgreSQL 18 upgrade validated, backend refactoring finalized, test suite overhaul delivered (54 new tests, performance baselines established, 0 skips).
+
+## Work Completed
+
+- **Commits:** 20 pushed to main
+- **CHANGELOG:** v3.25.0 entry written (alfred-changelog)
+- **History:** alfred/history.md + lucius/history.md committed
+- **Tag:** v3.25.0 created on fe2044d and pushed to origin
+- **Branch:** main synced and pushed
+
+## Team Participation
+
+- alfred-changelog (Lead): CHANGELOG + history documentation
+- scribe-release: History tracking commit
+- Coordinator: Tag creation and push