chore: update GitHub Pages workflow and docs

Author: shijiashuai

.github/workflows/ci.yml

@@ -7,6 +7,9 @@ on:
   pull_request:
     branches: [main]
 
+permissions:
+  contents: read
+
 concurrency:
   group: ${{ github.workflow }}-${{ github.ref }}
   cancel-in-progress: true
@@ -30,6 +33,7 @@ jobs:
         uses: actions/setup-python@v5
         with:
           python-version: '3.11'
+        cache: pip
 
       - name: Check Python formatting
         run: |
@@ -97,6 +101,7 @@ jobs:
         uses: actions/setup-python@v5
         with:
           python-version: '3.11'
+        cache: pip
 
       - name: Install Sphinx
         run: |
@@ -129,6 +134,7 @@ jobs:
         uses: actions/setup-python@v5
         with:
           python-version: '3.11'
+        cache: pip
 
       - name: Run pre-commit
         uses: pre-commit/action@v3.0.0

.github/workflows/pages.yml

@@ -30,6 +30,11 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v4
+        with:
+          sparse-checkout: |
+            docs
+            src
+            python
 
       - name: Setup Pages
         uses: actions/configure-pages@v5