refactor: expose portable FIRMS CSV helpers

CHANGELOG.md

@@ -91,6 +91,8 @@ of current runtime behavior, see [`docs/CURRENT-STATE.md`](docs/CURRENT-STATE.md
 
 ## [Unreleased]
 
+- Expose existing FIRMS CSV parsing and UTC time-window helpers through a portable package export, with shared contract fixtures.
+
 - Separate map source factories from switching and resource ownership; retain current source IDs, attribution and fallbacks.
 
 - Separate radio directory loading, station selection, globe presentation and playback into composed components with an explicit metadata source.

docs/CODE-BOUNDARIES.md

@@ -144,9 +144,14 @@ reconstruction mechanics with injectable acquisition dependencies.
 `gods-eye-view/sources/traffic` exports tile math and budget calculations.
 `gods-eye-view/sources/gbfs` exports host/path acceptance and cache-header rules.
 These entries import no Node middleware, application configuration or rendering.
-Callers retain their request admission and transport policy. FIRMS CSV parsing
-remains an owned dependency of the FIRMS Node provider. The boundary gate
-checks each entry independently.
+Callers retain their request admission and transport policy.
+
+`gods-eye-view/sources/firms-csv` exports the existing CSV parser, header
+recognition, acquisition-time conversion and trailing-day filter independently
+of the Node middleware. It imports no Node, DOM, rendering or network code.
+The Node provider continues using the same implementation; contract fixtures
+cover malformed rows, acquisition times, empty feeds and the inclusive time
+window. The boundary gate checks each entry independently.
 
 Browser terrain sampling, traffic matching/drawing, fire overlays and bike-share
 layer lifecycle remain in their current modules. This extraction changes no

docs/CURRENT-STATE.md

@@ -1,5 +1,9 @@
 # God's Eye View Current State
 
+The `sources/firms-csv` package export exposes existing FIRMS CSV parsing and
+UTC acquisition-window helpers without Node middleware or rendering dependencies.
+The standalone FIRMS provider, source defaults and parsing behavior are unchanged.
+
 CLI tools and development launchers accept `GEV_PROJECT_ROOT` to select the project environment, dependencies and output directory. Their default remains this checkout; bundled tool resources and source checks stay relative to the script installation. The setup doctor also accepts an explicit `rootDir`.
 
 Application composition now uses shared scene/control/catalog/tool constructors and allowlisted HTML component templates. The standalone entry supplies settings and the default sources. Terrain, boundaries, weather, regional context and summaries use configurable services; renderer/action owners remain page-scoped. Annotation proximity guards remain on by default and allow distant targets only for explicit navigation.

package.json

@@ -148,6 +148,7 @@
     "./aircraft": "./src/layers/aircraft/index.js",
     "./layers/vessels": "./src/layers/vessels/index.js",
     "./layers/earthquakes": "./src/layers/earthquakes/index.js",
+    "./sources/firms-csv": "./src/data/firmsCsv.js",
     "./layers/firms": "./src/layers/firms/index.js",
     "./layers/satellites": "./src/layers/satellites/index.js",
     "./layers/launches": "./src/layers/launches/index.js",

scripts/package-boundaries.json

@@ -115,6 +115,11 @@
     "modules": ["src/data/tomtomTiles.js"],
     "external": []
   },
+  "firms-csv": {
+    "exports": ["./sources/firms-csv"],
+    "modules": ["src/data/firmsCsv.js"],
+    "external": []
+  },
   "firms-provider": {
     "runtime": "node",
     "exports": ["./server/providers/firms"],

src/data/firmsCsv.test.mjs

@@ -9,7 +9,7 @@ import {
   filterTrailing24h,
   isLikelyCsv,
   parseFirmsCsv,
-} from './firmsCsv.js';
+} from 'gods-eye-view/sources/firms-csv';
 
 const __dirname = path.dirname(fileURLToPath(import.meta.url));
 const FIXTURE = fs.readFileSync(
@@ -144,3 +144,21 @@ test('filterTrailing24h on the fixture keeps everything for a same-night now', (
   const kept = filterTrailing24h(records, Date.UTC(2026, 6, 17, 2, 0));
   assert.equal(kept.length, records.length);
 });
+
+const contractCases = JSON.parse(
+  fs.readFileSync(
+    path.join(__dirname, 'fixtures', 'firms-csv-cases.json'),
+    'utf8',
+  ),
+);
+for (const fixture of contractCases) {
+  test(`portable FIRMS CSV contract: ${fixture.name}`, () => {
+    const records = parseFirmsCsv(fixture.csv);
+    assert.equal(records === null ? null : records.length, fixture.parsedCount);
+    const recent = filterTrailing24h(records, Date.parse(fixture.now));
+    assert.deepEqual(
+      recent.map((record) => record.acqTime),
+      fixture.recentTimes,
+    );
+  });
+}

src/data/fixtures/firms-csv-cases.json

@@ -0,0 +1,44 @@
+[
+  {
+    "name": "categorical confidence and unpadded midnight time",
+    "csv": "latitude,longitude,acq_date,acq_time,confidence,frp\n30,-97,2026-07-16,45,n,12\n",
+    "now": "2026-07-16T12:00:00Z",
+    "parsedCount": 1,
+    "recentTimes": ["45"]
+  },
+  {
+    "name": "truncated rows are omitted",
+    "csv": "latitude,longitude,acq_date,acq_time,confidence,frp\n30,-97,2026-07-16,1200\n",
+    "now": "2026-07-16T12:00:00Z",
+    "parsedCount": 0,
+    "recentTimes": []
+  },
+  {
+    "name": "invalid acquisition hour does not roll into tomorrow",
+    "csv": "latitude,longitude,acq_date,acq_time,confidence,frp\n30,-97,2026-07-15,2400,n,12\n",
+    "now": "2026-07-16T12:00:00Z",
+    "parsedCount": 1,
+    "recentTimes": []
+  },
+  {
+    "name": "inclusive trailing day and two-hour forward slack",
+    "csv": "latitude,longitude,acq_date,acq_time,confidence,frp\n30,-97,2026-07-15,1200,n,12\n30,-97,2026-07-15,1159,n,12\n30,-97,2026-07-16,1400,h,12\n30,-97,2026-07-16,1401,l,12\n",
+    "now": "2026-07-16T12:00:00Z",
+    "parsedCount": 4,
+    "recentTimes": ["1200", "1400"]
+  },
+  {
+    "name": "upstream error is different from an empty catalog",
+    "csv": "Invalid MAP_KEY",
+    "now": "2026-07-16T12:00:00Z",
+    "parsedCount": null,
+    "recentTimes": []
+  },
+  {
+    "name": "header-only catalog is successful and empty",
+    "csv": "latitude,longitude,acq_date,acq_time,confidence,frp\n",
+    "now": "2026-07-16T12:00:00Z",
+    "parsedCount": 0,
+    "recentTimes": []
+  }
+]