Manual testing of the salvaged draft persistence showed none of it worked
end-to-end. Three distinct bugs, all invisible to the store-level unit
tests:
1. New-chat drafts were never written. The skip-one-persist sentinel was
reset to null after consuming, but null IS a real scope (the unsaved
new-session draft) — so in a new chat every persist run matched the
"consumed" sentinel and bailed. This silently killed the headline
#38498 fix. Use undefined as the no-skip sentinel, which can never
collide with a scope.
2. Cmd+R inside the debounce window dropped the trailing text. React does
not run effect cleanups on a page reload, so the flush-on-unmount
never fired; with the 400ms debounce that meant type-then-reload lost
the draft every time. Flush pending writes on pagehide.
3. Session switch/new/resume/branch paths in use-session-actions cleared
the composer stores synchronously with the session-id updates. React
batches those, so by the time ChatBar's scope-change cleanup ran to
stash the departing session's attachments, the store was already
empty — the stash recorded [] and the chips were lost anyway. The
composer's per-scope restore now owns composer contents wholesale on
scope change, so drop the upstream clears (clearComposerDraft only
touched the vestigial $composerDraft atom nothing reads).
Co-authored-by: mollusk <roger@roger.local>
Co-authored-by: Teknium <127238744+teknium1@users.noreply.github.com>