Sync Linux Computer Use → agent-sh/computer-use-linux

[github-actions]

A merge to main touched computer-use-linux/** (the vendored Linux Computer Use crate).

Propagate the change to agent-sh/computer-use-linux if it is not codex-specific glue.
Keep the upstream generic naming there — do not push codex-* /
CODEX_COMPUTER_USE_* names, identity.rs, or the chrome-extension host upstream.

• Compare: 0850ed9...a174d9c
• Triggering commit: a174d9c

Once synced, bump both crates to the same enumeration. A version mismatch
between this crate and the standalone one means a sync is still pending.

[ilysenko]

Closing this sync reminder as not needed for the triggering change. The computer-use-linux diff from #301 only touched Codex-specific Chrome extension host glue for the bundled Thorium/Chrome integration, which the reminder explicitly excludes from the standalone agent-sh/computer-use-linux sync path. There is no generic Computer Use crate change to propagate.