durationLabel moves to util.ts, termPaths to agent/terminal/term-paths.ts,
StateBadges and tokenTotal to agent/state, and TryOutResult to
pages/review-common, so the builds, runs and agent pages no longer import
across page folders. SectionHeading is the body-size section heading the
create form and the egress card each styled; Preformatted is the scrolling
text block of the builds tail and the AGENTS.md view, which now share one
chrome and are both keyboard-scrollable. The components page shows both.
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