fix: add India boundary override from Natural Earth 50m data (#1796)

Adds India (IN) to country-boundary-overrides.geojson using the same
Natural Earth 50m Admin 0 Countries dataset already used for Pakistan.
The override system automatically replaces the base geometry on app load,
providing a higher-resolution MultiPolygon boundary (1518 points).

Renames the fetch script to reflect its broader purpose and updates
doc references in CONTRIBUTING.md and maps-and-geocoding.mdx.

Fixes koala73/worldmonitor#1721

Co-authored-by: stablegenius49 <185121704+stablegenius49@users.noreply.github.com>
Co-authored-by: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
Co-authored-by: Elie Habib <elie.habib@gmail.com>

CONTRIBUTING.md

@@ -259,10 +259,10 @@ For endpoints that deal with non-JSON payloads (XML feeds, binary data, HTML emb
 
 ### Country boundary overrides
 
-Country outlines are loaded from `public/data/countries.geojson`. Optional higher-resolution overrides (sourced from [Natural Earth](https://www.naturalearthdata.com/)) are served from R2 CDN. The app loads overrides after the main file and replaces geometry for any country whose `ISO3166-1-Alpha-2` (or `ISO_A2`) matches. To refresh the Pakistan boundary from Natural Earth, run:
+Country outlines are loaded from `public/data/countries.geojson`. Optional higher-resolution overrides (sourced from [Natural Earth](https://www.naturalearthdata.com/)) are served from R2 CDN. The app loads overrides after the main file and replaces geometry for any country whose `ISO3166-1-Alpha-2` (or `ISO_A2`) matches. To refresh boundary overrides from Natural Earth, run:
 
 ```bash
-node scripts/fetch-pakistan-boundary-override.mjs
+node scripts/fetch-country-boundary-overrides.mjs
 rclone copy public/data/country-boundary-overrides.geojson r2:worldmonitor-maps/
 ```
 

docs/maps-and-geocoding.mdx

@@ -117,7 +117,7 @@ The override mechanism lets us improve individual country boundaries without rep
    ```
 5. No code changes needed — the app picks up the new geometry automatically
 
-**Example script**: `scripts/fetch-pakistan-boundary-override.mjs` downloads the full Natural Earth 50m dataset (~24 MB), extracts Pakistan's feature, and writes the override file.
+**Example script**: `scripts/fetch-country-boundary-overrides.mjs` downloads the full Natural Earth 50m dataset (~24 MB), extracts country features (currently Pakistan and India), and writes the override file.
 
 ### Geopolitical Sensitivity
 

scripts/fetch-country-boundary-overrides.mjs

@@ -1,12 +1,14 @@
 #!/usr/bin/env node
 /**
- * Fetches Pakistan's boundary from Natural Earth 50m Admin 0 Countries and writes
+ * Fetches country boundaries from Natural Earth 50m Admin 0 Countries and writes
  * country-boundary-overrides.geojson locally. After running, upload to R2:
  *   rclone copy public/data/country-boundary-overrides.geojson r2:worldmonitor-maps/
  *
- * Note: downloads the full NE 50m countries file (~24 MB) to extract Pakistan.
+ * Currently extracts: Pakistan (PK), India (IN)
  *
- * Usage: node scripts/fetch-pakistan-boundary-override.mjs
+ * Note: downloads the full NE 50m countries file (~24 MB) to extract boundaries.
+ *
+ * Usage: node scripts/fetch-country-boundary-overrides.mjs
  * Requires network access.
  */
 
@@ -19,6 +21,12 @@ const NE_50M_URL = 'https://raw.githubusercontent.com/nvkelso/natural-earth-vect
 const OUT_DIR = join(__dirname, '..', 'public', 'data');
 const OUT_FILE = join(OUT_DIR, 'country-boundary-overrides.geojson');
 
+/** Countries to extract from Natural Earth and include as boundary overrides. */
+const OVERRIDE_COUNTRIES = [
+  { iso2: 'PK', iso3: 'PAK', name: 'Pakistan' },
+  { iso2: 'IN', iso3: 'IND', name: 'India' },
+];
+
 async function main() {
   console.log('Fetching Natural Earth 50m countries...');
   const resp = await fetch(NE_50M_URL, { signal: AbortSignal.timeout(60_000) });
@@ -29,27 +37,31 @@ async function main() {
   if (!data?.features?.length) {
     throw new Error('Invalid GeoJSON: no features');
   }
-  const pak = data.features.find((f) => f.properties?.ISO_A2 === 'PK' || f.properties?.['ISO3166-1-Alpha-2'] === 'PK');
+
-  if (!pak) {
+  const features = [];
-    throw new Error('Pakistan (PK) feature not found in Natural Earth data');
+  for (const country of OVERRIDE_COUNTRIES) {
-  }
+    const feature = data.features.find(
-  const override = {
+      (f) => f.properties?.ISO_A2 === country.iso2 || f.properties?.['ISO3166-1-Alpha-2'] === country.iso2,
-    type: 'FeatureCollection',
+    );
-    features: [
+    if (!feature) {
-      {
+      throw new Error(`${country.name} (${country.iso2}) feature not found in Natural Earth data`);
-        type: 'Feature',
+    }
-        properties: {
+    features.push({
-          name: 'Pakistan',
+      type: 'Feature',
-          'ISO3166-1-Alpha-2': 'PK',
+      properties: {
-          'ISO3166-1-Alpha-3': 'PAK',
+        name: country.name,
-        },
+        'ISO3166-1-Alpha-2': country.iso2,
-        geometry: pak.geometry,
+        'ISO3166-1-Alpha-3': country.iso3,
       },
-    ],
+      geometry: feature.geometry,
-  };
+    });
+    console.log(`Extracted ${country.name} (${country.iso2})`);
+  }
+
+  const override = { type: 'FeatureCollection', features };
   mkdirSync(OUT_DIR, { recursive: true });
   writeFileSync(OUT_FILE, JSON.stringify(override) + '\n', 'utf8');
-  console.log('Wrote', OUT_FILE);
+  console.log('Wrote', OUT_FILE, `(${features.length} countries)`);
 }
 
 main().catch((err) => {