Mobile: combine scroll-to-bottom button with working timer#10840

rough concept by gpt (original is not that right aligned but you get it)

Thanks for the report — this is a real mobile ergonomics gap, not a missing feature.

Today: FloatingWorkingControl already draws the centered “Working for…” capsule and the scroll-to-end chevron as two siblings that share a center and slide apart. The timer is intentionally non-interactive (touches pass through to the feed); only the small circle on the right scrolls. That’s awkward for left-handed use. Connection status is a separate case: that capsule is already a reconnect button.

Not a duplicate of #5434 (closed). That issue asked to add scroll-to-end; #5986 landed it. This issue is about combining tap targets once both chrome are visible.

Scope: mobile only (apps/mobile/src/features/threads/floating-working-control.tsx, wired from ThreadDetailScreen.tsx). Web keeps “Working for” in the timeline and a separate “Scroll to end” pill.

Implementation notes

• Combine only when a non-connection status and showScrollToEnd are both on: one pill (label + chevron) whose press is onScrollToEnd.
• Leave scroll-only as the existing circle; leave status-only pass-through.
• Do not steal the connection pill’s reconnect tap.
• Apply the same layout on iOS glass and the Android/fallback pill.
• Combined accessibility label: “Scroll to end”.

The GPT mockup in the first comment didn’t attach; a re-upload is welcome but not required.

Accepting as a small enhancement.

what iOS is this? This is how it's supposed to look and work:

https://github.com/user-attachments/assets/0b7b89fd-8fc4-49c3-b13d-867e1d0f3df8

sorry, android! just noticed it didn't make it into the body

edit: the concept's "before" positioning is off, yes, just illustrative

still too far right for left thumb