fix(ci): add missing dependencies and caching to docs workflow

- Add mkdocs base package (was missing, mkdocs-material is just a theme)
- Add Rust dependency caching with Swatinem/rust-cache@v2
- Add pip dependency caching with actions/cache@v4
- Add uni-crdt to cargo doc (missing library crate)
- Add uni_pydantic to pdoc generation
- Improve formatting of cargo doc command for readability

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

Author: milliondreams

.github/workflows/deploy-docs.yml

@@ -29,6 +29,11 @@ jobs:
       - name: Setup Rust
         uses: dtolnay/rust-toolchain@stable
 
+      - name: Cache Rust dependencies
+        uses: Swatinem/rust-cache@v2
+        with:
+          cache-on-failure: true
+
       - name: Install system dependencies
         run: |
           sudo apt-get update
@@ -39,6 +44,14 @@ jobs:
         with:
           python-version: '3.11'
 
+      - name: Cache pip dependencies
+        uses: actions/cache@v4
+        with:
+          path: ~/.cache/pip
+          key: ${{ runner.os }}-pip-${{ hashFiles('**/pyproject.toml') }}
+          restore-keys: |
+            ${{ runner.os }}-pip-
+
       # Build Rust crates (required by Python bindings and cargo doc)
       - name: Build Rust crates
         run: cargo build --release
@@ -51,16 +64,16 @@ jobs:
           maturin build --release
           pip install ../../target/wheels/*.whl
 
-      # Install uni-pydantic (pydantic notebooks need it)
+      # Install uni-pydantic and its dependencies (pydantic notebooks need it)
       # uni-db requirement is satisfied by wheel installed above
       - name: Install uni-pydantic
         run: |
           pip install ./bindings/python/uni-pydantic
 
-      # Install MkDocs dependencies (including mkdocs-jupyter for notebook execution)
+      # Install MkDocs and all dependencies for notebook execution
       - name: Install MkDocs dependencies
         run: |
-          pip install mkdocs-material mkdocs-jupyter pymdown-extensions pdoc
+          pip install mkdocs mkdocs-material mkdocs-jupyter pymdown-extensions pdoc
 
       # Build MkDocs (executes notebooks via mkdocs-jupyter, cleans site directory)
       - name: Build MkDocs Documentation
@@ -71,13 +84,19 @@ jobs:
       # Build and copy API docs AFTER MkDocs (since mkdocs cleans site/)
       - name: Build Rust documentation
         run: |
-          cargo doc --no-deps --document-private-items -p uni -p uni-common -p uni-query -p uni-store -p uni-algo
+          cargo doc --no-deps --document-private-items \
+            -p uni \
+            -p uni-common \
+            -p uni-query \
+            -p uni-store \
+            -p uni-algo \
+            -p uni-crdt
           mkdir -p website/site/api/rust
           cp -r target/doc/* website/site/api/rust/
 
       - name: Build Python documentation
         run: |
-          pdoc -o website/site/api/python uni_db
+          pdoc -o website/site/api/python uni_db uni_pydantic
 
       - name: Setup Pages
         uses: actions/configure-pages@v5