fix(docs): ui/tray/snippets.ts run: false — CI window-server gap (v0.5.878)

Headless macOS CI hits CGSConnectionByID assertion when tray APIs
spin up (no logged-in window server context). Compile + link
already validate the FFI surface; flip the file to `run: false`
so doc-tests skips the actual execution. Same shape as webview
and crypto banners. Pure docs banner change.

Also catches up Cargo.toml + CLAUDE.md version (linter races
dropped the bumps on v0.5.876 / v0.5.877 commits).

Author: proggeramlug

docs/examples/ui/tray/snippets.ts

@@ -2,6 +2,12 @@
 // docs/src/ui/tray.md
 // docs: docs/src/ui/tray.md
 // platforms: macos, linux, windows
+// run: false
+//
+// `run: false` because headless macOS CI runners hit a
+// CGSConnectionByID assertion (window-server not available without
+// a logged-in session). Compile-link is enough to certify the FFI
+// surface, which is the contract this file guards.
 
 import {
     App,