Adds a `brandBody` helper in setup/lib/theme.ts that wraps prose in
brand cyan (#2BB7CE), with the same TTY/NO_COLOR/truecolor gating used
by `brand`/`brandBold`/`brandChip`. The helper splits multi-line input
and colors each line independently so the SGR sequence doesn't bleed
across clack's gutter prefix.
Routing:
- `note()` (the un-dim card wrapper from #2095) now passes
`brandBody` as its `format` callback, so card bodies render
cyan line-by-line.
- Every prose `p.log.{message,info,success,step,warn}` call in the
setup flow wraps its body argument in `brandBody`. Calls whose
body is explicitly `k.dim(...)` (failure transcript tails, log
paths, claude-assist response previews) are left alone — those
are the "preview/debug" cases the dim-policy comment in
theme.ts already carves out.
- Spinner-finish lines in windowed-runner / claude-assist color
only the message portion; the `(5s)` elapsed suffix stays dim.
Brand cyan accents (chips, wordmark, inline emphasis) are unchanged.
This PR only adds the body color.
A follow-up will add OSC 11 dark/light detection so light-mode
terminals get a brand blue (#2b6fdc) variant — opt-in upgrade with
no regression for the dark-mode default.
ab2d509671