docs(firms): tighten the Suomi NPP notes

DATA_SOURCES.md

@@ -329,7 +329,7 @@ and MODIS NRT (Terra + Aqua), clamped to the trailing 24 h, cached 30 min to res
 transaction quota. Requires a free `FIRMS_MAP_KEY`
 (https://firms.modaps.eosdis.nasa.gov/api/map_key/); the layer is empty without it.
 The former bundled 2026-05-25 snapshot was removed 2026-07-16. Suomi NPP (`VIIRS_SNPP_NRT`)
-is no longer requested: NASA stopped delivering its data on 2026-11-02.
+is not requested: NASA stopped delivering it on 2026-11-02.
 
 ### UCS Satellite Database (`ucs_satellites/`)
 

docs/CURRENT-STATE.md

@@ -2860,9 +2860,7 @@ reporting are unchanged.
 ## FIRMS source status
 
 The FIRMS proxy requests VIIRS NOAA-20, VIIRS NOAA-21 and MODIS NRT (Terra and
-Aqua). It no longer requests VIIRS Suomi NPP: NASA stopped delivering Suomi NPP
+Aqua). It skips VIIRS Suomi NPP, which NASA stopped delivering on 2026-11-02.
-data on 2026-11-02, and the source returned no rows while still costing one
-MAP_KEY transaction per refresh.
 
 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,

server/providers/firms.js

@@ -132,8 +132,8 @@ export async function fetchFirms(
  * Upstream: https://firms.modaps.eosdis.nasa.gov/api/area/csv/{KEY}/{SOURCE}/world/2
  *
  * Merges two VIIRS NRT sources (NOAA-20, NOAA-21 — independent satellites, no
- * cross-source dedup) plus MODIS_NRT (combined Terra+Aqua,
+ * cross-source dedup) plus MODIS_NRT (combined Terra+Aqua, ~1 km, numeric
- * ~1 km, numeric 0-100 confidence), fetched sequentially (quota courtesy)
+ * 0-100 confidence), fetched sequentially (quota courtesy)
  * with `days=2` (`days=1` means "current UTC day", nearly empty just after
  * 00:00Z) and clamps to the trailing 24 h via src/data/firmsCsv.js. FIRMS
  * quota is 5,000 transactions / 10 min per MAP_KEY, so the cache is the point:
@@ -141,8 +141,7 @@ export async function fetchFirms(
  * fresh-enough disk cache (.gev-cache/firms.json) prevents ANY upstream
  * fetch across dev-server restarts. Pattern mirrors celestrakProxy.
  *
- * VIIRS_SNPP_NRT is not requested: NASA stopped delivering Suomi NPP data on
+ * VIIRS_SNPP_NRT is left out: NASA stopped delivering Suomi NPP on 2026-11-02.
- * 2026-11-02, so that source only spent a transaction per refresh (#849).
  *
  * Routes:
  *   GET /api/firms        → {fetchedAt, stale, ttlMs, sources, count, fires}

src/data/firmsProxy.test.mjs

@@ -21,7 +21,7 @@ assert.notEqual(start, -1, 'FIRMS refresh function exists');
 const end = config.indexOf('\n  }', start);
 assert.notEqual(end, -1, 'FIRMS refresh function closes');
 const refreshSource = config.slice(start, end + 4);
-// Read the source list from production so these tests share one source of truth.
+// Read the list from production so these tests follow it.
 const listed = config.match(/const SOURCES = \[([^\]]*)\];/);
 assert.ok(listed, 'FIRMS source list exists');
 const SOURCES = [...listed[1].matchAll(/'([A-Z0-9_]+)'/g)].map((m) => m[1]);
@@ -312,7 +312,7 @@ test('every FIRMS upstream request goes through the IPv4 fallback', async () =>
 });
 
 test('FIRMS requests only the satellites NASA still delivers', () => {
-  // NASA stopped delivering Suomi NPP data on 2026-11-02 (#849): requesting it
+  // NASA stopped delivering Suomi NPP on 2026-11-02; asking for it only spends
-  // returns no rows and still spends a MAP_KEY transaction on every refresh.
+  // a MAP_KEY transaction.
   assert.ok(!SOURCES.includes('VIIRS_SNPP_NRT'));
 });