Fix/docs corepack setup (#16)

* docs: Add comprehensive VitePress documentation

Create complete documentation site for rhdh-e2e-test-utils using VitePress:

- Guide section: installation, quick-start, core concepts, deployment, helpers, page objects, utilities, and configuration
- API reference: detailed method signatures and types for all exports
- Tutorials: step-by-step guides for common use cases
- Examples: copy-paste ready code examples

Additional features:
- GitHub Actions workflow for automatic deployment to GitHub Pages
- Standalone docs package with its own package.json and yarn.lock
- Reusable snippets to reduce duplication
- CLAUDE.md guide for documentation maintenance

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

* fix CI yarn install

* fix(docs): add Corepack setup for Yarn 3 in CI workflow

- Add corepack enable step to deploy-docs workflow
- Update docs setup instructions with corepack enable command
- Add packageManager field to docs/package.json

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

---------

Co-authored-by: Claude Opus 4.5 <[email protected]>

Author: subhashkhileri

.github/workflows/deploy-docs.yml

@@ -35,6 +35,9 @@ jobs:
         with:
           node-version: 22
 
+      - name: Enable Corepack
+        run: corepack enable
+
       - name: Setup Pages
         uses: actions/configure-pages@v5
 

docs/CLAUDE.md

@@ -150,6 +150,7 @@ The docs are a standalone package, independent of the root project. This allows:
 ### Setup
 
 ```bash
+corepack enable  # Enable Yarn 3 via Corepack (one-time setup)
 cd docs
 yarn install
 ```

docs/package.json

@@ -14,5 +14,6 @@
   },
   "engines": {
     "node": ">=18"
-  }
+  },
+  "packageManager": "[email protected]"
 }