Step 18 of v4.3 playground plan. Replaces v4.2 Gesture 2 pencil-icon
hover-reveal with numbered circular badges in the left gutter (one per
anchored paragraph; ordering matches sidebar jumplist). 2-3px accent stripe
extends right from the badge into the gutter. Yellow-tint highlight
(rgba 255, 235, 59, 0.25 — Google Docs pattern) applies to the anchored
paragraph when an annotation is active. Body text never reflowed or
recolored. Gesture 1 (text-select adder) and Gesture 3 (page-level note)
remain for new annotation creation.
CSS uses --color-scope-voyage token for badge background and stripe.
JS adds injectAnchorBadges() + setActiveAnchor() and rewires mountRender.
Trace: SC1 + SC6, research/04 Insight 3 + Recommendation marker-design.
Kjell Tore Guttormsen
84f41014f9