fix(atlas): classify Hong Kong, Macau and other enclaves under their own code

Hong Kong and Macau sit inside China's bounding box, so getCountryFromCoords
returned CN for them and the cached place_regions row was never corrected by
the Nominatim fallback. The same gap dropped San Marino, Vatican City, Monaco,
Liechtenstein, Gibraltar and Puerto Rico entirely.

Add their bounding boxes (smaller boxes win in the area-based lookup), name
aliases and continent entries, plus a migration that clears stale place_regions
rows for places inside these territories so existing installs re-resolve them.

Closes #963

server/src/db/migrations.ts

@@ -2237,6 +2237,34 @@ function runMigrations(db: Database.Database): void {
       try { db.exec('ALTER TABLE oauth_clients ADD COLUMN allows_client_credentials INTEGER NOT NULL DEFAULT 0'); }
       catch (err: any) { if (!err.message?.includes('duplicate column name')) throw err; }
     },
+    // Drop stale atlas cache rows for territories that used to resolve to their
+    // surrounding country (Hong Kong/Macau as China, San Marino/Vatican as Italy,
+    // etc.) before their own bounding boxes existed. The next atlas stats request
+    // re-resolves any place inside these boxes with the corrected country code.
+    () => {
+      const enclaveBoxes: [number, number, number, number][] = [
+        [113.83, 22.15, 114.43, 22.56], // HK
+        [113.53, 22.10, 113.60, 22.21], // MO
+        [12.40, 43.89, 12.52, 43.99],   // SM
+        [12.44, 41.90, 12.46, 41.91],   // VA
+        [7.40, 43.72, 7.44, 43.75],     // MC
+        [9.47, 47.05, 9.64, 47.27],     // LI
+        [-5.36, 36.11, -5.33, 36.16],   // GI
+        [-67.30, 17.88, -65.22, 18.53], // PR
+      ];
+      try {
+        const del = db.prepare(
+          `DELETE FROM place_regions WHERE place_id IN (
+             SELECT id FROM places WHERE lat BETWEEN ? AND ? AND lng BETWEEN ? AND ?
+           )`
+        );
+        for (const [minLng, minLat, maxLng, maxLat] of enclaveBoxes) {
+          del.run(minLat, maxLat, minLng, maxLng);
+        }
+      } catch (err: any) {
+        if (!err.message?.includes('no such table')) throw err;
+      }
+    },
   ];
 
   if (currentVersion < migrations.length) {

server/src/services/atlasService.ts

@@ -100,6 +100,12 @@ export const COUNTRY_BOXES: Record<string, [number, number, number, number]> = {
   UG:[29.6,-1.5,35.0,4.2],UY:[-58.4,-34.9,-53.1,-30.1],UZ:[55.9,37.2,73.1,45.6],VE:[-73.4,0.7,-59.8,12.2],
   AE:[51.6,22.6,56.4,26.1],GB:[-8,49.9,2,60.9],US:[-125,24.5,-66.9,49.4],VN:[102.1,8.6,109.5,23.4],XK:[20.0,41.9,21.8,43.3],
   YE:[42.5,12.1,54.0,19.0],ZM:[21.9,-18.1,33.7,-8.2],ZW:[25.2,-22.4,33.1,-15.6],
+  // Territories with their own ISO code that sit inside a larger country's box.
+  // Listed so getCountryFromCoords()'s smallest-box match picks them over the host
+  // (e.g. Hong Kong/Macau over China, San Marino/Vatican over Italy).
+  HK:[113.83,22.15,114.43,22.56],MO:[113.53,22.10,113.60,22.21],SM:[12.40,43.89,12.52,43.99],
+  VA:[12.44,41.90,12.46,41.91],MC:[7.40,43.72,7.44,43.75],LI:[9.47,47.05,9.64,47.27],
+  GI:[-5.36,36.11,-5.33,36.16],PR:[-67.30,17.88,-65.22,18.53],
 };
 
 export const NAME_TO_CODE: Record<string, string> = {
@@ -144,6 +150,9 @@ export const NAME_TO_CODE: Record<string, string> = {
   'angola':'AO','namibia':'NA','botswana':'BW','zimbabwe':'ZW','zambia':'ZM','malawi':'MW',
   'mozambique':'MZ','mozambik':'MZ','madagascar':'MG','rwanda':'RW','burundi':'BI',
   'somalia':'SO','papua new guinea':'PG','brunei':'BN',
+  'hong kong':'HK','hong kong sar':'HK','macau':'MO','macao':'MO','macau sar':'MO',
+  'san marino':'SM','vatican':'VA','vatican city':'VA','holy see':'VA','monaco':'MC',
+  'liechtenstein':'LI','gibraltar':'GI','puerto rico':'PR',
 };
 
 export const CONTINENT_MAP: Record<string, string> = {
@@ -167,6 +176,7 @@ export const CONTINENT_MAP: Record<string, string> = {
   ZA:'Africa',SE:'Europe',CH:'Europe',TH:'Asia',TR:'Europe',UA:'Europe',UG:'Africa',UY:'South America',
   UZ:'Asia',VE:'South America',AE:'Asia',GB:'Europe',US:'North America',VN:'Asia',XK:'Europe',
   YE:'Asia',ZM:'Africa',ZW:'Africa',NG:'Africa',
+  HK:'Asia',MO:'Asia',SM:'Europe',VA:'Europe',MC:'Europe',LI:'Europe',GI:'Europe',PR:'North America',
 };
 
 // ── Geocoding helpers ───────────────────────────────────────────────────────