Collapsible #anchor-panel (toggle ⚓ #btn-anchors): every anchor gets a color
dot (recolor via inline color input), label (rename via prompt), one-click
jump-to (scene3d.focusOn), and delete — PATCH/DELETE /api/anchors/{id}, then
state.anchors update + emit("anchors-changed") so scene3d + overlays refresh.
＋ Tag drives the FROZEN M8 annotator without an event (annotate.js is
null-event safe by construction; the backend keeps event-less annotations as
independent anchors): prompt a name -> startAnnotateMode -> user drags a bbox
on any video -> the resolved anchor is PATCHed to the name + a palette color.
Esc / ＋ Tag again cancels. All mutating controls carry .write-ui (capsule
mode keeps the read-only list + jump). CSS injected from the module —
index.html is frozen.
Live-verified: create->rename->recolor->jump->delete roundtrip, labels in 3D
+ both video overlays, reload survival, capsule hiding (plan/status/lane-F.md).
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
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