Digest #239: PostHog's 2PB DuckDB exit, Alpine's SSH bypass and Terraform overload

Also inside: testing Kubernetes tenant isolation, converting Anthropic bills into FOCUS, and signing agent commits without local private keys.

PostHog is rebuilding its warehouse on Trino after its own DuckLake deployment reached roughly 2PB and 1 trillion rows.

There’s a laptop lab for testing Kubernetes tenant isolation, a Step Functions a…