Pairs each live WFIGS perimeter with its nearby/contemporaneous FIRMS hotspots
into a single "fire" on the /events map. FIRMS hotspots carry no IrwinID, so the
link is spatial+temporal: a hotspot is confirmed (part of a known fire) when it
lies within 1km of a perimeter AND within 72h of it; hotspots matching no
perimeter render amber as "unconfirmed" -- a possible new fire detected by
satellite before an official perimeter exists (early-warning signal).
- routes.py: read-only /events/fire-fused.json (PostGIS ST_DWithin geography join)
- events_list.html: "Fuse fire layers" toggle (default on); centroid fire glyph
that expands to polygon + hotspot dots on click; amber unconfirmed hotspots
- central.css: --fire-confirmed / --fire-unconfirmed vars (retune without code)
- 11 tests (shaping, bbox parse, R/T + bbox param wiring); spatial correctness
verified on prod (Summit Creek: perimeter + 90 hotspots; 191 unconfirmed)
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
