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THESIS: Let product teams choose patient enrollment for Signals while supported device data remains available through FHIR; refuse the generic centered SaaS hero.
OWN-WORLD: White ground, Ovok lilac #B2A5CD to purple #694D98, open editorial space, tracked engineering labels, hairline guides, flat shadcn controls, striated signal bands.
STORY: Device data is stored in FHIR. Only eligible vital-sign readings from patients enrolled in Signals are sent for alert evaluation; enrollment is configurable.
FIRST VIEWPORT: At 1586×992, a two-line promise and actions fill the left 40%; labeled device flows and the app endpoint fill the right 60%, with a visible Signals enrollment note; AWS Frankfurt, per-patient pricing, and Signals status close in a bottom strip.
FORM: Signal Chord, third of six rolled challengers, selected under seed 87f03636; approved split-hero comp.
FINISH: unreviewed and undocumented is unfinished; this build ends with the finish review, the verdict, DESIGN.md, and every shipping raster carrying its provenance
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