fix(catalog): serve app shell at lab route (#42159)

packages/lab/catalog/catalog/worker.test.ts

@@ -1,4 +1,5 @@
 import { describe, expect, test } from "bun:test"
+import wrangler from "../wrangler.jsonc"
 import { assetPath } from "../worker"
 
 describe("catalog worker", () => {
@@ -12,4 +13,8 @@ describe("catalog worker", () => {
     expect(assetPath("/lab/catalog/catalog.json")).toBe("/catalog.json")
     expect(assetPath("/lab/catalog/captures/opencode/home.frame.json")).toBe("/captures/opencode/home.frame.json")
   })
+
+  test("leaves HTML routing to the worker", () => {
+    expect(wrangler.assets.html_handling).toBe("none")
+  })
 })

packages/lab/catalog/wrangler.jsonc

@@ -8,6 +8,7 @@
   "assets": {
     "directory": "./dist",
     "binding": "ASSETS",
+    "html_handling": "none",
   },
   "routes": [
     {