KnoxCoder 2.2.1

Added

• Agent accessibility (K-102). Skip-to-composer control, landmarks, a live transcript region, and named permission cards, jobs, checkpoints, and recipe preview. Built-in One Dark, Light+, and high-contrast palettes are contrast-checked in CI. A dedicated VoiceOver/NVDA session is still a human check.
• Host soak (K-101). eval/hostSoak.test.ts runs 1000 runChatTurns through callTool, checkpoints, and event fold. The native GUI folds 40 shared-loop turns without unbounded DOM growth. Neither is a real VS Code window soak.

Changed

• Tool ports (K-084 stretch). File, shell, search, git, terminal, and composite tools use ToolExtras ports (fs / proc / search / git / term / editor) instead of calling the full IDE. Core still takes a concrete IDE for diagnostics, DAP, checkpoints, secrets, LSP, and repo map. A messenger-only Core is not done.
• Recipe preview (MC-90) now shows on an empty transcript, with Apply / Skip and the latency line.

Fixed

• Auto-update (version detect + download). Packaged builds read latest-<platform>-<arch>.json from GitHub Releases (/releases/latest/download/…) and compare that productVersion with the running app, so 2.2.0 detects 2.2.1 without the GitHub API rate limit. “Download Update” opens the installer/archive, not the generic releases page. Feed URLs use v<version> even when CI was started with Run workflow (they previously pointed at v{run}-build.{attempt} and 404’d). Windows verifies sha256hash from the same JSON. A missing feed still falls back to /releases/latest.
• Hover-only chrome (terminal copy command, tool-args toggle, unnamed switches) now has accessible names.
• Checkpoint list search and the jobs “clear finished” control are labelled for screen readers.