enricobuehlerandClaude Fable 5 4c2a6dd091 feat(host,api): the host knows what OS it runs, and says so ...

Clients want to show which OS/distro a host runs. The host now detects it once
per process (new osinfo module: compile-time on Windows/macOS, os-release on
Linux) and advertises an icon-friendly specificity chain, generic → specific —
`windows`, `macos`, `linux[/<family>][/<id>]`, e.g. `linux/fedora/bazzite`,
`linux/arch/steamos`. A client walks the chain most-specific-first and shows the
first token it has art for, so an unknown distro degrades to its family's mark
and finally to plain Tux — the host emits the full chain precisely so clients
need zero distro→parent knowledge. The middle token is the first recognized
ID_LIKE ancestor (the spec orders them most-similar-first); the leaf is ID
verbatim, sanitized to TXT-safe `[a-z0-9._-]` because it feeds a DNS record.

Two carriers, both additive: a new advisory mDNS `os=` TXT key (same trust
posture as `mac` — unauthenticated, a wrong value only draws a wrong icon), and
`HostInfo.os` + `HostInfo.os_name` on the mgmt API (`os_name` is the os-release
PRETTY_NAME, REST-only so the TXT stays small). GameStream serverinfo and the
QUIC Welcome are untouched. api/openapi.json regenerated (drift test green on
Linux) and the TS SDK gen refreshed from it — which also catches the committed
gen up with earlier spec changes it had missed (monitors, native_paired_clients,
encoder_backend).

assets/os-icons/ gains the ten master SVG marks every client derives its
per-platform art from (Font Awesome Free brands CC BY 4.0 + Simple Icons CC0 —
provenance in its README), with attribution folded into THIRD-PARTY-NOTICES.txt
via the generator (regenerating also catches the stale crate manifest up with
the current lockfile).

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

2026-07-29 17:58:33 +02:00

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