Copy root README.md to packages/use-agently before npm publish (#66)

* Initial plan

* Copy root README.md to packages/use-agently before npm publish

Co-authored-by: fuxingloh <4266087+fuxingloh@users.noreply.github.com>

---------

Co-authored-by: copilot-swe-agent[bot] <198982749+Copilot@users.noreply.github.com>
Co-authored-by: fuxingloh <4266087+fuxingloh@users.noreply.github.com>

Author: Copilot

.github/workflows/publish.yml

@@ -61,6 +61,9 @@ jobs:
       - name: Build all packages
         run: bun run build
 
+      - name: Copy root README to use-agently package
+        run: cp README.md packages/use-agently/README.md
+
       - name: Publish all packages
         run: |
           for pkg in packages/*/; do