improvement(docs): make the API reference read as code and unify its type token - #6653

…icons to emcn

Status codes in the example panel are numeric literals and render as code
everywhere else on the page, including the Response header's own trigger, but
fumadocs rendered the strip in the body sans face. Language tabs sit in a
separate container and stay sans — those are product names, not code.

fumadocs draws a few lucide glyphs on API pages that its client-component
overrides do not expose (the heading anchor and the code-block copy button).
emcn strokes at 1.55 and lucide at 2, so those icons read heavier than every
icon around them; match the weight.

…d wrap example code

The auth row collapses its real `<token>` type and renders the chip through
::after, so the span is only a wrapper — but it still matched the type-token
rule and kept that rule's border, height, and gap. The border drew a second
empty box around the real chip and the gap opened in front of it, because the
collapsed text remains an anonymous flex item; together they pushed the chip
right by roughly 8px that no other row had.

Example-panel code overflowed sideways instead of wrapping: fumadocs sizes the
block with `w-max`, so it grew to its longest line inside a 400px scroller and
the existing pre-wrap never applied. Cap the width, switch break-all to
overflow-wrap anywhere so only unfittable tokens split, and reserve room for
the copy button fumadocs floats over the first line.

Wrapping restarts every continuation line at column zero, and in a JSON body
indentation is what carries nesting depth — so a wrapped response misreports
its own structure. A hanging indent keeps the depth but needs the shiki lines
forced from flex rows to blocks, which breaks the line rhythm.

Removes the pre-wrap rules rather than repointing them: fumadocs sizes the
block with w-max, so the previous rule never took effect and overflow was
already the behaviour on the page.

…ible

An `array<T>` slot holds its angle brackets as bare text nodes, which become
anonymous flex items, so the slot's gap prised `array<` and `>` away from the
type they wrap. Drop the gap and let the union separator carry its own margin;
this also makes the auth row's gap override redundant.

The separator was dimmed twice, by a muted token and again by opacity, which
on the dark chip fill left `string | null` reading as `string null`.

…reference CSS

The rule hiding the trailing `In: header` line matched `p:has(> code)`, which
is a shape, not a target — every scheme description in our specs cites a status
code, so the whole explanation of personal vs workspace-scoped keys was
display:none on every API reference page. Match the last child instead, and
shorten the description to one line now that it renders.

The dropdown trigger's hover rule had been left below a new id-qualified base
rule that outranked it, so the trigger could no longer change colour on hover.

Removes what does not run: the four `::-webkit-scrollbar` rules (specifying a
non-auto scrollbar-width makes Chromium ignore them, and Firefox never had
them) and an `order: 2` block whose selectors and declaration the type-token
rule above it already carried.

Names the two values the API reference repeats — the monospace stack, written
out eleven times, and the 12.5px code size, written nine — as --font-mono-stack
and --text-code. Also drops four !important declarations that already won on
specificity, a --text-muted fallback that can never fire, and a lucide selector
subsumed by the one beside it.

…mentary

The metadata face — size, leading, weight, mono stack — was written out in seven
rules that a comment asked future readers to keep in sync by hand; it is now one
rule those seven consume, each adding only its own colour, content, and order.
The auth row's chip likewise re-derived all eleven declarations of the type
token and now joins that rule, keeping only its label.

Comments were running longer than the rules they documented — 88 added comment
lines against 73 declarations. Trimmed to the load-bearing facts: cascade traps,
browser behaviour, and the bugs a rule prevents. Dropped the block narrating why
the wrap rules were reverted, which duplicated its own commit message.

Also retires a scrollbar token left unreferenced by the webkit removal, moves
the last two fumadocs colours in our own components onto platform tokens, and
brings the callout icon to 1.55 so the docs really do have one icon weight.