v0.81.0

0.81.0 (2026-09-16)

🚀 Features

• ci: Check the OpenTofu configuration, in pre-commit and in CI (#862) (fa0bcfd)
• control-plane: Let the heading name the stack, not a badge below it (#842) (2a1f311)
• control-plane: Paint the logo through a mask so it takes the accent (#843) (3bf728f)
• control-plane: Separate the brand accent from the status colours (#845) (01eed37)
• stacks: Add Apache Airflow workflow orchestration (#855) (7487fc1)
• stacks: Add Keycloak identity provider (#854) (debd45d)
• stacks: Add Langfuse LLM observability (#856) (dca3440)
• stacks: Add MLflow, and wire the notebook stacks to it (#850) (d117d24)
• stacks: Add MongoDB with mongo-express as its web UI (#857) (1907e98)
• stacks: Add Neo4j Community Edition with a Bolt-routing proxy (#858) (e1c76dc)
• stacks: Add Qdrant vector database (#859) (7c12051)
• stacks: Add Temporal durable workflow engine with Web UI (#860) (d5e73a9)
• stacks: Add TimescaleDB time-series database (#861) (389b6a1)
• stacks: Replace Keycloak's temporary admin with a permanent one (#871) (d27a9c9)

🐛 Bug Fixes

• ci: Install OpenTofu with a pinned script instead of setup-opentofu (#874) (ae1a14a)
• deploy: Refuse an empty DOMAIN once, in the env-file dispatcher (#868) (095874b)
• examples: Escape inlined secrets and render the S3 DataFrame (#846) (23a7bdb)
• stacks: Name the executable in MLflow's command (#853) (2b0b2fb)
• stacks: Point Neo4j Browser at the port the tunnel serves (#870) (0bc0975)
• stacks: Run MongoDB 7.0, which starts on the kernel we deploy (#869) (bea2f64)

📚 Documentation

• stacks: Record the rare Lakekeeper write failure where users meet it (#849) (8df5f1f)