chore: update GitHub Pages workflow and docs

Author: shijiashuai

.github/workflows/ci.yml

@@ -24,6 +24,7 @@ jobs:
         uses: actions/setup-python@v5
         with:
           python-version: "3.11"
+        cache: pip
 
       - name: Install ruff
         run: pip install ruff
@@ -64,6 +65,7 @@ jobs:
         uses: actions/setup-python@v5
         with:
           python-version: "3.11"
+        cache: pip
 
       - name: Install test dependencies
         run: pip install pytest hypothesis torch --index-url https://download.pytorch.org/whl/cpu

.github/workflows/pages.yml

@@ -25,6 +25,14 @@ jobs:
     steps:
       - name: Checkout
         uses: actions/checkout@v4
+        with:
+          sparse-checkout-cone-mode: false
+          sparse-checkout: |
+            *.md
+            _config.yml
+            docs
+            changelog
+            LICENSE
 
       - name: Setup Pages
         uses: actions/configure-pages@v5