* Add workspace pages in the titlebar
* Add workspace pages UI test target entry
* Relax workspace pages UI test titlebar checks
* Use page close button in workspace pages UI test
* Stabilize workspace pages UI test interruptions
* Skip page close confirms in UI tests
* Clean up superseded workspace handoffs
* Tighten page hint UI assertions
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Co-authored-by: cmux <cmux@cmuxs-Mac-mini.local>
* Fix Claude wrapper hook injection when cmux socket is stale
* Harden socket listener lifecycle and rearm policy
* Unset CLAUDECODE in stale-socket passthrough
* Harden listener cleanup and bound claude ping probe
* Guard socket unlink during listener startup window
