Remote Control: sign-in precheck, new switches, and running state during background work

What

Remote Control lets you reach a Claude Code session on your computer from another device. Its setup changed.

• A not_signed_in check now runs before the usual eligibility checks.
• A new remote switch, tengu_bridge_leave_silent_pool_off, falls back to false in the code. When it is off, the check returns after_no_answer.
• Another new remote switch, tengu_hazy_origami, falls back to true in the code.
• tengu_ccr_bridge still falls back to false in the code.
• A new backgroundHold option, with holdsRunning and sessionState, keeps the session marked as running while background tasks are still pending.

Remote switches are values sent from Anthropic's servers that turn features on or off without a new release. Nothing has been read yet about tengu_bridge_leave_silent_pool_off or tengu_hazy_origami, so their state is unknown. For tengu_ccr_bridge, the flag server returned on for this site's account and off for the anonymous baseline. No reading of it has been taken under this release.

Why

Remote Control may behave differently for some people. You get an earlier failure if you are not signed in. Clients connected through Remote Control may also see the session as running while background work is pending, instead of idle.