ai-hist sdk-ts-v0.4.2

Rust CLI release. The npm packages (ai-hist sdk-ts, ai-hist-mcp, ai-hist-native) are unchanged by this release — the changes are entirely in crates/ai-hist, so binaries are what matter here.

Added

• ai-hist coverage — shows which machines are pushing history and how recently, without ssh'ing to each one. Client of GET /v1/machines (AgentWorkforce/relayhistory-cloud#19, deployed).

Fixed

• Real hostname resolution. The CLI read $HOSTNAME, which launchd does not export, and otherwise fell back to the literal string unknown-host. Every machine pushing from its launchd service therefore reported a null hostname, and the server's upsert wrote that over any good value — so the whole fleet appeared as anonymous rows. Now resolved via the hostname crate with $HOSTNAME retained as an explicit override.

Why this release matters

A machine that silently stops reporting was previously invisible: finn-mini was mute from 2026-08-03 until 2026-08-05 and nobody noticed, and reconstructing its agent sessions required an ssh session to that specific machine. Verified against production immediately after deploy:

Fleet coverage — 4 machine(s): 3 active, 0 stale, 1 missing
⚠️  Khaliqs-MBP.home has not pushed in 41d (last seen 2026-06-26T09:57:28.985Z)

Requires relayhistory-cloud with the /v1/machines endpoint deployed.

Note on versioning

The tag series sdk-ts-vX.Y.Z has historically tracked the sdk-ts package version, which remains at 0.4.1 since this release does not touch it. This tag exists to attach CLI binaries; the naming drift between tag and sdk-ts package version is deliberate here and worth reconciling in the release convention.