sessions: the info dialog shows a pending recall ...

GET /sessions/{id}/info now carries the session's pending recall, and
GET /sessions/{id}/recall answers in one shape ({"recall": {...} | null})
instead of a flat object when found and a wrapper when not. The lookup is a
single indexed row rather than the newest 50 recalls filtered in Python.

compression: keep the last four turns verbatim, not eight ...

Four turns still carry the current task word for word; everything older is
already summarised, so eight bought little and pushed the compression trigger
later than it needed to be.

The mid-turn window is unchanged: it counts messages, not turns, and
max(12, keep_recent*2) still floors at 12. navi_code keeps its own override of
12 turns.

Examples, docs and the two tests that assert the default follow.

webclient: a dialog that answers which model is serving, and from where ...

The header only named a model when the route had fallen back, so "what is
running this session, on which host, with how much context" had no answer
in the UI. The context percentage doubles as the second way in: a session
bar is a fair place to ask what the bar measures.

GET /sessions/{id}/info reads in-process state only — the active route
entry, the health chain, the profile's effective window, run and client
counts — and the dialog polls it while open. /meta and the session head
now report the route's window instead of the global ollama_num_ctx, which
had been wrong for every cloud-backed profile.