Mention-spawned sessions now list chronologically like any other session, in
both layouts; the row's origin icon (with the channel · workspace tooltip)
carries the provenance. The collapsed band hid fresh mentions below week-old
sessions. UX-DECISIONS §31 revised.
Personas are disabled for the first release, so the subtitle repeated the same
label on every row. When personas return they surface on hover, not as a second
line. UX-DECISIONS §7 updated; e2e spec added.
Imported from andrewyng/aisuite@1b4bbf303e
(contents of its platform/ directory, hoisted to the repo root).
Development history prior to this commit lives in that repository.
Co-authored-by: Devika <devikaverma11@gmail.com>