A custom HERMES_HOME (outside the profiles tree) reported `profile: null`,
so the tail entry landed under profile '' while the session's owner hint —
built from list rows that _serving_profile() stamps "default" — looked up
'default'. Two identities for one backend; the exact-key lookup missed and
"Show earlier" stayed hidden for the Desktop's own sandboxed and
HERMES_HOME-overridden installs (electron/main.ts resolveHermesHome).
The messages endpoint now returns the same _serving_profile() stamp the
list rows carry, so the Desktop keys a page under the owner it already
routes the session by; the inline resolver and its function-body import go
away. On the renderer, the ambient profile used for backends that predate
the field is captured at request time alongside the connection, so a
profile switch mid-read cannot re-key the page.
kshitijk4poor