fix(firms): drop LIVE from the row's source and the voice answer for a snapshot that ends at a set time

The catalog source 'NASA FIRMS · LIVE' still led the row; getStats() now
names the source 'NASA FIRMS' for such a snapshot. get_active_fires says
"in the 24 hours to" its end and reports window_end. The end is checked
to be a printable time, cleared under KEY REQUIRED, the test moves next
to the layer, and the changelog and CURRENT-STATE describe it.

docs/CURRENT-STATE.md

@@ -767,7 +767,7 @@ Consult the linked official advisory for safety decisions.
 
 Voice and HUD snapshots reuse the existing feedState classifier. Analyst follow-ups retain their original data provenance; current-view results append provenance without replacing legacy fields. HUD context and deterministic telemetry include non-nominal feed state.
 
-Analyst records come on demand from each layer's `getAnalystRecords`: flights, military, local ADS-B, vessels, satellites, launches, earthquakes, FIRMS (VIIRS and MODIS, with a `sensor` field), fire perimeters, cyclones, transit, bikeshare, ALPR cameras, mapped installations, datacenters and dams. `analyst_query` counts the whole loaded set (up to 250,000 records per layer; past that `coverage.records` reports `returned`, `total` and `truncated: true` and the result carries `complete: false`). Ranking keeps a top-k and scans in 20,000-row slices that yield to the page and stop when superseded. It refuses unknown fields, operators, units that do not convert (`altitudeM(ft)` converts), wrong-typed values, invalid centres, unknown scope kinds and sort fields with `code` and `allowed`, refuses a follow-up with no previous answer (`NO_RESULT_CONTEXT`) or naming other layers than that answer (`FOLLOW_UP_MISMATCH`), and tells `LAYER_OFF`, `NOT_READY` and `FEED_UNAVAILABLE` apart from a real zero; when only some layers can answer the result is `partial` with `unanswered` ids. The Contacts-window path applies the same filters, ranking and item shape to one immutable panel snapshot. Each aircraft layer retains at most 20,000 rows; reaching that bound sets `complete: false` and the spoken/card count becomes “At least”, never an exact claim. A superseded query never replaces follow-up memory, while sibling analyst calls from one assistant response do not cancel one another. Items carry `lat`/`lon`; the feed window (earthquakes and FIRMS: last 24 h), the precise scope and any caveat sit in `display`, which is on-screen detail rather than something the model recites. "In view" is still a radius around the view centre, not the visible footprint. Satellite distance is ground distance.
+Analyst records come on demand from each layer's `getAnalystRecords`: flights, military, local ADS-B, vessels, satellites, launches, earthquakes, FIRMS (VIIRS and MODIS, with a `sensor` field), fire perimeters, cyclones, transit, bikeshare, ALPR cameras, mapped installations, datacenters and dams. `analyst_query` counts the whole loaded set (up to 250,000 records per layer; past that `coverage.records` reports `returned`, `total` and `truncated: true` and the result carries `complete: false`). Ranking keeps a top-k and scans in 20,000-row slices that yield to the page and stop when superseded. It refuses unknown fields, operators, units that do not convert (`altitudeM(ft)` converts), wrong-typed values, invalid centres, unknown scope kinds and sort fields with `code` and `allowed`, refuses a follow-up with no previous answer (`NO_RESULT_CONTEXT`) or naming other layers than that answer (`FOLLOW_UP_MISMATCH`), and tells `LAYER_OFF`, `NOT_READY` and `FEED_UNAVAILABLE` apart from a real zero; when only some layers can answer the result is `partial` with `unanswered` ids. The Contacts-window path applies the same filters, ranking and item shape to one immutable panel snapshot. Each aircraft layer retains at most 20,000 rows; reaching that bound sets `complete: false` and the spoken/card count becomes “At least”, never an exact claim. A superseded query never replaces follow-up memory, while sibling analyst calls from one assistant response do not cancel one another. Items carry `lat`/`lon`; the feed window (earthquakes and FIRMS: last 24 h, or for FIRMS the 24 hours to a snapshot's `at`), the precise scope and any caveat sit in `display`, which is on-screen detail rather than something the model recites. "In view" is still a radius around the view centre, not the visible footprint. Satellite distance is ground distance.
 
 Keyless terrain tiles retry when Re:Earth throttles them. The browser fetches
 `terrain.reearth.land/cesium-mesh/ellipsoid/{z}/{x}/{y}.terrain` directly; no
@@ -2913,6 +2913,13 @@ reporting are unchanged.
 The FIRMS proxy requests VIIRS NOAA-20, VIIRS NOAA-21 and MODIS NRT (Terra and
 Aqua). It skips VIIRS Suomi NPP, which NASA stopped delivering on 2026-11-02.
 
+`/api/firms` answers the trailing 24 hours to now, and the Active Fires row
+reads `NASA FIRMS · LIVE · updated …`. A source may instead answer the 24 hours
+to a set time, naming its end as `at` (epoch ms): the row then reads
+`NASA FIRMS · 24 h to MM-DD HH:MM UTC`, `getStats()` reports `at`, and
+`get_active_fires` says "in the 24 hours to" that time and reports it as
+`window_end`. The dev proxy never sets `at`.
+
 The FIRMS CSV parser rejects impossible acquisition calendar dates before the proxy filters records to the trailing 24 hours, while retaining valid UTC acquisition times.
 The `get_active_fires` tool reports acquisition times as UTC ISO timestamps,
 including zero-padded hours and minutes; missing or invalid dates and times