* fix: setup cards tell the model the name the user saw, and an empty apps or plugins list shows no card
The accent card showed "Ultraviolet", but the result only carried "#8a2be2", so
the model guessed a CSS name ("BlueViolet, done."). The card now answers with the
label of each picked row next to its id, the backend passes it through for the
app-owned lists it cannot name itself (accent, theme, layout, connectors,
plugins), and the tool description tells the model to say the label.
A session with no Nous identity (own key, guest sign-up rate limited at boot)
got an apps card that said "This list isn't available right now". Now
setup_choose kind:"connectors" checks connectors_available() in the setup
session's own profile scope before any card: with no identity and the free tier
on, it makes one guest sign-up attempt through ensure_portal_identity (the mint
memo's cooldown still applies), and if connectors are still closed it returns
no_answer with a one-line notice and the next card, without showing a card. An
empty plugins list returns the same way. The skill says one line about the free
Nous account and moves on.
The renderer re-reads a cached "unavailable" connector catalog when the card
mounts, so a guest minted by the card is not hidden behind the prefetch taken at
the start of setup.
* fix: the setup intro holds the thread until its spring settles
The backend prelude writes the first assistant row and the name card while the
intro copy is still typing. The copy's cover uses the chat surface colour, which
is transparent under glass, so the card showed through mid-motion. While the copy
plays ($introHoldsThread, true only for the 'playing' stage), the thread under it
is hidden; it shows when the spring settles, and at once with reduced motion
(the stage goes straight to 'landed'). The backend prelude is unchanged: its
tool call waits for the answer.
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