🔧 ci: fix GitHub Actions deprecation warnings and improve caching

- Replace deprecated Leafwing-Studios/cargo-cache with official actions/cache@v4
- Add proper cache separation for different job types (test, doc, lint)
- Add GitHub token for Protoc setup to prevent rate limiting
- Improve clippy commands to check all targets and features
- Use hierarchical cache restore keys for better cache efficiency

Author: foxzool

.github/workflows/ci.yml

@@ -17,10 +17,31 @@ jobs:
       - uses: dtolnay/rust-toolchain@master
         with:
           toolchain: ${{ env.CARGO_TOOLCHAIN }}
-      - name: Cache Cargo build files
-        uses: Leafwing-Studios/cargo-cache@v1
+      - name: Cache Cargo registry
+        uses: actions/cache@v4
+        with:
+          path: ~/.cargo/registry
+          key: ${{ runner.os }}-cargo-registry-${{ hashFiles('**/Cargo.lock') }}
+          restore-keys: |
+            ${{ runner.os }}-cargo-registry-
+      - name: Cache Cargo index
+        uses: actions/cache@v4
+        with:
+          path: ~/.cargo/git
+          key: ${{ runner.os }}-cargo-index-${{ hashFiles('**/Cargo.lock') }}
+          restore-keys: |
+            ${{ runner.os }}-cargo-index-
+      - name: Cache target directory
+        uses: actions/cache@v4
+        with:
+          path: target
+          key: ${{ runner.os }}-target-${{ hashFiles('**/Cargo.lock') }}
+          restore-keys: |
+            ${{ runner.os }}-target-
       - name: Install Protoc
         uses: arduino/setup-protoc@v3
+        with:
+          repo-token: ${{ secrets.GITHUB_TOKEN }}
       - name: Run cargo test
         run: cargo test --lib
 
@@ -33,10 +54,32 @@ jobs:
       - uses: dtolnay/rust-toolchain@master
         with:
           toolchain: ${{ env.CARGO_TOOLCHAIN }}
-      - name: Cache Cargo build files
-        uses: Leafwing-Studios/cargo-cache@v1
+      - name: Cache Cargo registry
+        uses: actions/cache@v4
+        with:
+          path: ~/.cargo/registry
+          key: ${{ runner.os }}-cargo-registry-${{ hashFiles('**/Cargo.lock') }}
+          restore-keys: |
+            ${{ runner.os }}-cargo-registry-
+      - name: Cache Cargo index
+        uses: actions/cache@v4
+        with:
+          path: ~/.cargo/git
+          key: ${{ runner.os }}-cargo-index-${{ hashFiles('**/Cargo.lock') }}
+          restore-keys: |
+            ${{ runner.os }}-cargo-index-
+      - name: Cache target directory
+        uses: actions/cache@v4
+        with:
+          path: target
+          key: ${{ runner.os }}-target-doc-${{ hashFiles('**/Cargo.lock') }}
+          restore-keys: |
+            ${{ runner.os }}-target-doc-
+            ${{ runner.os }}-target-
       - name: Install Protoc
         uses: arduino/setup-protoc@v3
+        with:
+          repo-token: ${{ secrets.GITHUB_TOKEN }}
       - name: Run cargo doc
         run: cargo doc --no-deps --document-private-items --lib
 
@@ -50,13 +93,35 @@ jobs:
         with:
           toolchain: ${{ env.CARGO_TOOLCHAIN }}
           components: rustfmt, clippy
-      - name: Cache Cargo build files
-        uses: Leafwing-Studios/cargo-cache@v1
+      - name: Cache Cargo registry
+        uses: actions/cache@v4
+        with:
+          path: ~/.cargo/registry
+          key: ${{ runner.os }}-cargo-registry-${{ hashFiles('**/Cargo.lock') }}
+          restore-keys: |
+            ${{ runner.os }}-cargo-registry-
+      - name: Cache Cargo index
+        uses: actions/cache@v4
+        with:
+          path: ~/.cargo/git
+          key: ${{ runner.os }}-cargo-index-${{ hashFiles('**/Cargo.lock') }}
+          restore-keys: |
+            ${{ runner.os }}-cargo-index-
+      - name: Cache target directory
+        uses: actions/cache@v4
+        with:
+          path: target
+          key: ${{ runner.os }}-target-lint-${{ hashFiles('**/Cargo.lock') }}
+          restore-keys: |
+            ${{ runner.os }}-target-lint-
+            ${{ runner.os }}-target-
       - name: Install Protoc
         uses: arduino/setup-protoc@v3
+        with:
+          repo-token: ${{ secrets.GITHUB_TOKEN }}
       - name: Check format
         run: cargo fmt --all -- --check
       - name: Run clippy with dev features
-        run: cargo clippy
+        run: cargo clippy --all-targets --all-features
       - name: Run clippy without dev features
-        run: cargo clippy --no-default-features
+        run: cargo clippy --all-targets --no-default-features