improvement: Remove npm auth from yarn configuration (#8)

* feat: add custom styling and release automation

- Implement custom CSS injection and URL rewriting to allow users to style PDFs and fix cross-environment links.
- Add release-please GitHub Action to automate the release process and enable secure NPM publishing.

* improvement: Remove npm auth from yarn configuration

- Remove npmAlwaysAuth and npmAuthToken from .yarnrc.yml to improve security by avoiding explicit token references in configuration.
- Update yarn.lock and install state to ensure the dependency tree is consistent with the new configuration.

Author: orange-guo

.yarn/install-state.gz

@@ -1,10 +1,6 @@
 # see https://yarnpkg.com/configuration/yarnrc
 nodeLinker: node-modules
 
-npmAlwaysAuth: true
-
-npmAuthToken: "${NPM_TOKEN}"
-
 npmPublishAccess: public
 
 npmPublishRegistry: "https://registry.npmjs.org"