Hotline Computer 0.9.1

Hotline Computer 0.9.1 says how long a tool listing may be cached, so a Claude Code teammate has its computer tools.

• The MCP tools/list result now carries ttlMs: 0 and cacheScope: "private". MCP 2026-07-28 requires both, and a client that negotiates that version and validates the reply, as Claude Code does, refused the listing three times and gave up: the teammate connected, authenticated, and saw none of capture, input, browser, shell, files, windows, wait or state, while nothing on the computer or the desk reported a failure. Older clients ignore the two fields. The eight tools themselves are unchanged.

The next Hotline desk release (0.17.1, PR #28) pins this computer and carries the same fix on its own loopback server; a 0.17.0 desk on this computer gets the computer tools but still hides its own from a Claude Code teammate. Existing computers retain their running version until updated from the teammate's pane; state info and state guide identify the attached computer.

Validation: native ARM64/x86_64 release gates passed all 22 scenarios per architecture, the image contract, restart plus recreate recovery on the same home and store volumes, image-identity checks, and cold pulls.

Cold registry pulls: 15.37 s ARM64 / 21.80 s x86_64. Downloaded-image start-to-health: 0.288 s / 0.460 s. Compressed layers: 425,191,640 / 425,052,783 bytes. The combined image digest is sha256:f09ad43528e8e0be7bd18d5ff089416ca92fa7ad040e1686fdbbe6e77060702f.

Use ghcr.io/1broseidon/hotline-computer:0.9.1.