Upgrade test harness, schema edge case tests, and two bug fixes found
during testing.
New: docker-compose-upgrade.yml + ci/e2e-upgrade-test.sh for single-replica
upgrade testing (seed → upgrade → verify). ci/e2e-upgrade-rolling.sh for
multi-replica rolling upgrade with shared Postgres. 11 Go unit tests for
schema migration edge cases, settings preservation, and package compat.
Fix: Bundled permission auto-grant on Postgres — SQL used SQLite-style
`granted = 1` on BOOLEAN columns. Now dialect-aware (true/false on PG).
Fix: E2E chat test API fields — login, token extraction, profile endpoint.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
