feat(bake-sprite): end-to-end sprite-mode orchestrator + CLI dispatch

tests/bake-sprite-collision.test.js

@@ -0,0 +1,17 @@
+const { test } = require('node:test');
+const assert = require('node:assert');
+const fs = require('node:fs');
+const path = require('node:path');
+const os = require('node:os');
+const { bake } = require('../src/bake');
+
+const COLLISION = path.resolve(__dirname, 'fixtures/sprite-collision');
+
+test('bake sprite: collision -> error', async (t) => {
+    const tmp = fs.mkdtempSync(path.join(os.tmpdir(), 'col-'));
+    t.after(() => fs.rmSync(tmp, { recursive: true, force: true }));
+    await assert.rejects(
+        bake({ mode: 'sprite', inDir: COLLISION, outDir: tmp, atlasId: 'col' }),
+        /alias collision/i,
+    );
+});