fix(ci): Install LLVM on macOS for libclang dependency

librocksdb-sys and rquickjs require libclang for building.
On macOS runners, LLVM is not installed by default, causing
the build to fail with 'Library not loaded: libclang.dylib'.

This adds a step to install LLVM via Homebrew and sets the
LIBCLANG_PATH environment variable.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

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

Author: pepicrft

.github/workflows/release.yml

@@ -170,6 +170,13 @@ jobs:
           # Verify installation
           ls -la $HOME/.local/bin/protoc*
 
+      - name: Install LLVM (macOS)
+        if: runner.os == 'macOS'
+        run: |
+          brew install llvm
+          echo "LIBCLANG_PATH=$(brew --prefix llvm)/lib" >> $GITHUB_ENV
+          echo "LLVM_CONFIG_PATH=$(brew --prefix llvm)/bin/llvm-config" >> $GITHUB_ENV
+
       - name: Install cross-compilation tools (Linux)
         if: runner.os == 'Linux'
         run: |