Opening a rectification Case used to switch sessions first and read the
turns afterwards, so the reader saw a plain transcript, then an empty
panel, then a remount when the turns arrived (and again after the first
turn settled, because the panel key carried a ready/loading suffix).
The surface hook now reads turns and snapshot in one Case request under
the home reveal budget and only then makes the session active; the
sidebar defers the switch the same way; a session selected at bootstrap
(deep link, refresh) is hydrated during the prepare phase so the reveal
shows the surface itself; the panel key is the session/Case binding only,
later turns fill an empty transcript as a prop update, and unmounting
aborts any stream or snapshot read. The homepage card and the sidebar row
say 正在打开 statically while the Case opens — no spinner after the reveal.
BUG-505
Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01JUei7K13cYxLHE3Axe4A45
Jesse_Chen