v1.4.42-rc.2

What's Changed

• Anchor floating workspace positioning by @Jinwoo-H in #4490
• Restore PR review/merge-queue signals in right sidebar (regressed by #4001) by @jonavila in #4491
• Fix phantom agent status rows by @Jinwoo-H in #4498
• Indicate detached HEAD worktrees by @AmethystLiang in #4513
• Fix setup guide sidebar flicker by @brennanb2025 in #4494
• Fix stale mobile terminal input locks by @nwparker in #4506
• Enable WebAuthn in browser sessions by @nwparker in #4507
• Adjust max-lines lint budgets by @nwparker in #4515
• Keep browser tabs mounted while switching by @nwparker in #4508
• Include Linear issue keys in workspace names by @nwparker in #4510
• Remove feature education console info by @brennanb2025 in #4514
• Show install status for AI capabilities by @brennanb2025 in #4483
• Enforce mobile max-lines budgets by @nwparker in #4516

Full Changelog: v1.4.42-rc.1...v1.4.42-rc.2