Derive the picker's checked state from the list at render so a row drafted
during the fetch is not removed. Disable Update list when it would empty a
non-empty list, because an empty list serves the whole catalog. List a
repeated candidate id once and treat rows without an id as unconfigured.
The fetched-model picker now starts with the configured models checked and
Update list adds newly checked candidates and removes unchecked configured
ones. Configured models the provider does not list stay. Select all and
Deselect all change only visible candidates so a hidden configured model is
not removed unseen.
Refs #6290
The Models page offered two side-by-side buttons, "Add provider" and
"Add a custom provider", which asked a new user to classify their
provider by an implementation fact — whether it is in the installed
pi-ai catalog — before seeing anything. One "Add model provider" button
now opens one card whose segmented mode switch chooses between a
third-party model provider (the catalog select over the provider
editor) and a custom model API (the create form for a relay, a
self-hosted server, or any other OpenAI- or Anthropic-compatible
endpoint), with a one-line purpose beneath the switch. A panel mounts
the first time its mode is shown and stays mounted, hidden, while the
card is open, so switching modes discards neither draft.
A mode is offered only while its namespace is mounted and disabled
while it has nothing to offer, which keeps the old per-button
availability; with one mode the card shows that form alone. The
protocol pickers name each protocol by its product name while the
stored value stays the schema identifier, and an unnamed protocol shows
that identifier. The Chinese copy of this page calls a provider 提供商
throughout.
The e2e scenarios drive the single entry and its custom-API mode, and
the ARIA goldens that carry the page copy are re-recorded. The user
guide describes the one entry with fresh screenshots in both languages.
Turtle