fix(search): refuse empty coordinate components instead of silently dropping them

CHANGELOG.md

@@ -1,5 +1,7 @@
 # Changelog
 
+- Coordinate searches refuse empty latitude or longitude components instead of navigating to an unintended location.
+
 - Treat explicitly current, complete empty vessel coverage as a successful update,
   clearing obsolete contacts while retaining stale or incomplete snapshots.
 

docs/CURRENT-STATE.md

@@ -5127,3 +5127,8 @@ datacenters, dams and the Nepal locator retain that shared credit while displaye
 
 Military fragments stitch by source identity. Different mapped parcels merge only
 when their footprints touch or contain one another, never across a seam tolerance gap.
+
+
+### fix(search): refuse empty coordinate components instead of silently dropping them
+
+Require exactly two nonempty components while preserving comma, semicolon and whitespace pairs. Malformed separator input falls through to geocoding.

src/search/coordinate-empty-components.test.mjs

@@ -0,0 +1,12 @@
+import test from 'node:test';
+import assert from 'node:assert/strict';
+import { parseCoordinateQuery } from './coordinateParser.js';
+test('search refuses omitted components and repeated separators', () => {
+  for (const q of ['30,, -97', ',30,-97', '30,-97,', '30;; -97', '30,; -97'])
+    assert.equal(parseCoordinateQuery(q), null, q);
+  for (const q of ['30,-97', '30; -97', '30 -97', 'N 30, W 97'])
+    assert.deepEqual(
+      [parseCoordinateQuery(q).lat, parseCoordinateQuery(q).lon],
+      [30, -97],
+    );
+});

src/search/coordinateParser.js

@@ -49,8 +49,8 @@ function splitComponents(query) {
   const parts = /[,;]/.test(text)
     ? text.split(/[,;]/)
     : text.split(/\s+(?=[+-]?[.\d]|[NSEW]\s*[+-]?[.\d])/i);
-  const trimmed = parts.map((part) => part.trim()).filter(Boolean);
+  const trimmed = parts.map((part) => part.trim());
-  return trimmed.length === 2 ? trimmed : null;
+  return trimmed.length === 2 && trimmed.every(Boolean) ? trimmed : null;
 }
 
 /** Present a parsed pair the way a coordinate is normally written. */