The PR tab now leads with the PR's identity, one row per merge gate
(checks, unresolved threads, approvals, conflicts) that opens the screen or
sheet that resolves it, a changes card and a collapsed description. Close,
Unlink, Auto-merge, Edit title and Copy link move into the ⋯ menu.
Checks and Comments become pushed screens: failures open with their
annotation and Fix / Rerun / Open / Log on the failure, running checks
next, passed folded; comments filter by Unresolved / All / Hide bots with
Resolve and Reply on each thread and a comment box at the bottom.
Merge opens a sheet that lists only the methods the repo allows, starting
on its default. Reviewers move into a sheet with search to add and remove.
Every Create PR entry point opens one sheet: title and description seeded
from the branch's commits (shared seed rule in src/shared, GitHub's own
default), Write with AI, base picker and draft. It pushes first when
needed, works for all five providers and lands on the PR tab for GitHub.