Render textured aerial maps and support legacy recovery links

tests/map-view.test.ts

@@ -0,0 +1,18 @@
+import { test } from "node:test";
+import assert from "node:assert/strict";
+import { mapDimensions } from "../renderer/map-view.mjs";
+
+test("aerial map pixels keep rectangular X/Z bounds square", () => {
+  assert.deepEqual(
+    mapDimensions({ minX: -32, maxX: 96, minZ: -16, maxZ: 48 }),
+    { width: 1024, height: 512 },
+  );
+  assert.deepEqual(
+    mapDimensions({ minX: 0, maxX: 2048, minZ: 0, maxZ: 1024 }),
+    { width: 2048, height: 1024 },
+  );
+  assert.throws(
+    () => mapDimensions({ minX: 4, maxX: 4, minZ: 0, maxZ: 16 }),
+    /positive integer/,
+  );
+});