{{/* Page anatomy: the page header (docs/design-system.md §6; spec
     page-anatomy "One title size and one header layout"). Pipeline:
     server.PageHeader. The only template that renders an <h1>: one size
     (h1.h2), an optional back link above it (chrome-conventions "One back
     affordance"), an optional one-sentence lead below it, and one
     right-hand slot holding a muted count or one action control. Check()
     aborts the render when a page supplies both. Parsed into every set by
     web.ParseUIPartials. */}}
{{ define "pageHeader" }}{{ .Check }}<div class="d-flex align-items-start justify-content-between gap-3 mb-3 app-page-header">
    <div class="app-page-header-text">
        {{ if .Back }}<a class="text-decoration-none d-inline-block mb-1" href="{{ .Back.URL }}">← Back to {{ .Back.Label }}</a>{{ end }}
        <h1 class="h2 mb-0">{{ .Title }}</h1>
        {{ if .Lead }}<p class="text-body-secondary mb-0">{{ .Lead }}</p>{{ end }}
    </div>
    {{ if .Action }}<a href="{{ .Action.URL }}" class="btn btn-sm {{ if .Action.Primary }}btn-primary{{ else }}btn-outline-secondary{{ end }} flex-shrink-0">{{ .Action.Label }}</a>{{ else if .Count }}<span class="text-body-secondary small flex-shrink-0 pt-2">{{ .Count }}</span>{{ end }}
</div>{{ end }}