- gateway broadcasts a hash-only config.changed event after every
persisted config write (operator.read scoped); the Control UI refreshes
its snapshot on the event so agent-approved ui.prefs changes apply live
on every connected client (skipped while a local draft is dirty)
- the chat composer's model picker shows provenance — 'Using default
from Settings' vs 'Session override' with an icon reset back to the
default — mirroring the existing reasoning-row anatomy
- the AI & Agents settings page is renamed Agent Defaults to separate it
from the per-agent Agents manager
- Memory Import renders through the settings design language (sections,
rows, toggle, status badges); only the collection review list, apply
report, skeleton, and confirm dialog keep custom markup, and the dead
bespoke CSS is pruned
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