inventions...almost working

apps/cdn/src/cdn.app.ts

@@ -107,4 +107,10 @@ const app = new Hono<App>()
 	// the path.
 	.get('/room/:dataBlob{.+}', (c) => serveAsset(c, `room/${c.req.param('dataBlob')}`))
 
+	// Invention data by name. The client fetches this for an invention's
+	// `CurrentVersion.BlobName` to spawn it. Streamed from R2 under `invention/`.
+	// Like room blobs the name is date-foldered, and it carries the `.inv` extension
+	// the upload stored it under, so the rest of the path is matched as-is.
+	.get('/invention/:dataBlob{.+}', (c) => serveAsset(c, `invention/${c.req.param('dataBlob')}`))
+
 export default app

apps/cdn/src/test/integration/api.test.ts

@@ -64,4 +64,19 @@ describe('cdn endpoints', () => {
 		const res = await exports.default.fetch(`${ORIGIN}/room/missing.room`)
 		expect(res.status).toBe(404)
 	})
+
+	test('GET /invention/:dataBlob streams the invention blob from R2', async () => {
+		// Date-foldered, `.inv`-suffixed — the name the storage worker generates and the
+		// api worker hands back as the invention's BlobName.
+		const name = '2026-07-12/6f1c0c3e-1b6a-4a52-9f52-0f4a1a6d2f77.inv'
+		await env.CDN_ASSETS.put(`invention/${name}`, new Uint8Array([1, 2, 3]))
+		const res = await exports.default.fetch(`${ORIGIN}/invention/${name}`)
+		expect(res.status).toBe(200)
+		expect(new Uint8Array(await res.arrayBuffer())).toEqual(new Uint8Array([1, 2, 3]))
+	})
+
+	test('GET /invention/:dataBlob 404s when the blob is absent', async () => {
+		const res = await exports.default.fetch(`${ORIGIN}/invention/missing.inv`)
+		expect(res.status).toBe(404)
+	})
 })