feat(fires): MODIS in Active Fires and a Fire Perimeters layer (#737)

Adds MODIS NRT to Active Fires and a keyless Fire Perimeters layer (NIFC WFIGS) with
InciWeb incident links, served through a capped, cached /api/fire-perimeters proxy.

Co-authored-by: Gustavo Beneduzi <[email protected]>
Co-authored-by: James Cooke <[email protected]>

CHANGELOG.md

@@ -164,6 +164,19 @@
 Add feed provenance to analyst/view answers and HUD context while retaining existing response fields and runner ownership (Matt Van Horn, #347).
 
 Analyst records for loaded satellites, datacenters and dams, with explicit bounded count/rank coverage (Matt Van Horn, #351).
+- New Fire Perimeters layer (Events group): live NIFC WFIGS interagency
+  wildfire incident perimeters as ground-clamped polygons with a
+  containment-colored fire line, refreshed every 5 minutes from the public
+  keyless feature service with truncation paging. Clicking a perimeter shows
+  an incident card (acreage, containment, cause, behavior, personnel, county,
+  cost, complex membership) and, when the incident has a state- and
+  recency-verified InciWeb page, a click-through link to it. Recency uses
+  incident page origin and update times because the publication API was retired.
+  The layer is reachable from the panel, voice control, share links (token `2`), and the
+  analyst query engine. WFIGS and InciWeb requests use a capped, cached
+  same-origin proxy with timeouts and a per-client limit. Unchanged refreshes
+  retain geometry; incident-link checks abort on disable or selection change,
+  and the row includes a containment legend.
 
 - Remove the spurious scrollbars that appeared on both panel stacks at narrow
   widths (720px and below) as soon as a panel was expanded. The stacks scroll
@@ -524,6 +537,8 @@ of current runtime behavior, see [`docs/CURRENT-STATE.md`](docs/CURRENT-STATE.md
 
 ### Added
 
+- Add MODIS NRT (Terra+Aqua, ~1 km) active fires to the FIRMS layer, sharing the
+  existing `FIRMS_MAP_KEY` and 30-minute cache.
 - Two map-orientation controls sit beside Share in the top-center globe
   actions. Tilt Map swings between a straight-down map and a 35-degree oblique
   around the point under the centre of the view, keeping that point and the