fix(ci): build worker routes before worker-build

The worker build requires routes-worker.js which is generated by
running build:routes with WORKER_BUILD=true. This was missing in CI,
causing the worker build to fail with "Could not resolve routes.js".

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Opus 4.5 <[email protected]>

Author: DIYgod

.github/workflows/test.yml

@@ -42,6 +42,8 @@ jobs:
               run: pnpm rb && pnpx rebrowser-puppeteer browsers install chrome
             - name: Build routes
               run: pnpm build
+            - name: Build worker routes
+              run: WORKER_BUILD=true pnpm build:routes
             - name: Build worker
               run: pnpm worker-build
             - name: Test all and generate coverage