After lab trend charts render, a POST to /dossier/{id}/labs/commentary
sends compact series summaries (first→last value, % change, dates,
reference range) to Claude Haiku, which returns one sentence per metric.
Commentary appears below each chart as an italic insight, e.g.:
'Cholesterol dropped 15% from 210→178 mg/dL since March — now within range.'
Implementation:
- New handleLabCommentary() in dossier_sections.go — auth-gated, POST only,
gracefully skips if no Anthropic key configured
- Route: POST /dossier/{id}/labs/commentary (registered before /labs in mux)
- renderFilterChart() now wraps each SVG in .lab-chart-wrap with a
.lab-commentary placeholder showing a pulsing '…' while loading
- fetchLabCommentary() fires async after chart render, patches commentary
divs by data-abbr attribute when response arrives
- CSS: .lab-chart-wrap, .lab-commentary, .lab-commentary-text,
.lab-commentary-loading with pulse animation
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