Complete the ClickHouse migration by removing all PostgreSQL analytics
code. PostgreSQL now serves only RBAC, config, and audit — all
observability data is exclusively in ClickHouse.
- Delete 6 dead PostgreSQL store classes (executions, stats, diagrams,
events, metrics, metrics-query) and 2 integration tests
- Delete RetentionScheduler (ClickHouse TTL handles retention)
- Remove all 7 cameleer.storage.* feature flags from application.yml
- Remove all @ConditionalOnProperty from ClickHouse beans in StorageBeanConfig
- Consolidate 14 Flyway migrations (V1-V14) into single clean V1 with
only RBAC/config/audit tables (no TimescaleDB, no analytics tables)
- Switch from timescale/timescaledb-ha:pg16 to postgres:16 everywhere
(docker-compose, deploy/postgres.yaml, test containers)
- Remove TimescaleDB check and /metrics-pipeline from DatabaseAdminController
- Set clickhouse.enabled default to true
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
- Set failsafe reuseForks=true to reuse JVM across IT classes (faster test suite)
- Replace ClickHouse with PostgreSQL+OpenSearch in docker-compose.yml
- Remove redundant docker-compose.dev.yml
- Update CLAUDE.md and HOWTO.md to reflect new storage stack
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
