feat: roll out V2 art across all battle maps

scripts/export-battle-map-v2-data.mjs

@@ -0,0 +1,49 @@
+import { mkdirSync, writeFileSync } from 'node:fs';
+import { dirname, join, sep } from 'node:path';
+import { createServer } from 'vite';
+
+const outputPath = process.argv[2] ?? join('tmp', 'battle-map-v2-runtime-data.json');
+const battleAssetMarker = '/src/assets/images/battle/';
+
+const server = await createServer({
+  logLevel: 'error',
+  server: { middlewareMode: true },
+  appType: 'custom'
+});
+
+try {
+  const { battleScenarios } = await server.ssrLoadModule('/src/game/data/battles.ts');
+  const { battleMapAssets } = await server.ssrLoadModule('/src/game/data/battleMapAssets.ts');
+
+  const battles = Object.values(battleScenarios).map((scenario, index) => {
+    const assetUrl = battleMapAssets[scenario.mapTextureKey];
+    const markerIndex = typeof assetUrl === 'string' ? assetUrl.indexOf(battleAssetMarker) : -1;
+    if (markerIndex < 0) {
+      throw new Error(`${scenario.id}: cannot resolve battle map asset URL ${JSON.stringify(assetUrl)}`);
+    }
+
+    const fileName = assetUrl.slice(markerIndex + battleAssetMarker.length);
+    return {
+      number: index + 1,
+      id: scenario.id,
+      title: scenario.title,
+      mapTextureKey: scenario.mapTextureKey,
+      assetPath: join('src', 'assets', 'images', 'battle', fileName).split(sep).join('/'),
+      width: scenario.map.width,
+      height: scenario.map.height,
+      terrain: scenario.map.terrain,
+      units: scenario.units.map((unit) => ({
+        id: unit.id,
+        faction: unit.faction,
+        x: unit.x,
+        y: unit.y
+      }))
+    };
+  });
+
+  mkdirSync(dirname(outputPath), { recursive: true });
+  writeFileSync(outputPath, `${JSON.stringify({ generatedAt: new Date().toISOString(), battles }, null, 2)}\n`, 'utf8');
+  console.log(`Wrote ${outputPath} with ${battles.length} runtime battle maps.`);
+} finally {
+  await server.close();
+}