Milo 0.4.2

Proof-and-showcase release demonstrating Milo in a released downstream CLI and across a complete human, agent, and MCP Apps workflow.

Highlights

• Released Chirp adoption — The exact-version downstream canary now pins milo-cli==0.4.1 with bengal-chirp==0.10.0, the first Chirp release whose packaged eleven-command CLI runs on Milo. It verifies help, parsing, output channels, lazy imports, structured dispatch, and the reviewedcheck, diff, androutesMCP/llms.txt allowlist under Python 3.14 free-threading.
• Waypoint vertical proof — A dependency-free showcase carries validated intent checkpoints through isolated git snapshots, competing attempts, conflict-safe selection, undo, human timeline views, agent resources, streaming progress, and an interactive MCP Apps graph.
• Reproducible launch evidence — The comparison with Typer plus FastMCP now includes same-app fixtures and a machine-checked public claims ledger instead of relying on prose-only positioning.
• Stronger project hygiene — Contributor and security guidance, a documented test taxonomy, property-based schema and reducer checks, and both GIL-on and free-threaded CI lanes make the repository's quality claims inspectable.

Added

• A mature-CLI adoption guide covering compatibility inventory, typed adapters, lazy command registration, help/output/exit preservation, agent-surface policy, phased cutover, and exact-release downstream canaries.
• A clean-checkout Waypoint replay that exercises hook-driven CLI checkpoints, real MCP inspection and selection, and both human TUI and MCP Apps views.
• Reusable CI documentation and repository governance for release-class proof.

Compatibility Notes

Milo's runtime API, Python 3.14+ requirement, and sole runtime dependency range kida-templates>=0.11.0,<0.12.0are unchanged. The new material is showcase, documentation, CI, and downstream compatibility evidence built on the released 0.4.1 runtime contract.

Upgrade with:

pip install --upgrade "milo-cli==0.4.2"