fix: match deployment target with runner OS for library compatibility

The issue is that Homebrew libraries on macOS 14 runners are built for
macOS 14 and cannot be downgraded. We must use different deployment
targets based on the runner OS:

- macOS 13 runners: Can build for macOS 11.0 (HNSW) and 13.3 (DiskANN)
- macOS 14 runners: Must build for macOS 14.0 (due to system libraries)

This ensures delocate-wheel succeeds by matching the deployment target
with the actual minimum version required by bundled libraries.

.github/workflows/build-reusable.yml

@@ -157,8 +157,13 @@ jobs:
             # Use system clang for better compatibility
             export CC=clang
             export CXX=clang++
-            # Use 11.0 for broad macOS compatibility
+            # Set deployment target based on runner OS
-            export MACOSX_DEPLOYMENT_TARGET=11.0
+            if [[ "${{ matrix.os }}" == "macos-13" ]]; then
+              export MACOSX_DEPLOYMENT_TARGET=11.0
+            else
+              # macos-14+ runner - match the system libraries
+              export MACOSX_DEPLOYMENT_TARGET=14.0
+            fi
             uv build --wheel --python ${{ matrix.python }} --find-links ${GITHUB_WORKSPACE}/packages/leann-core/dist
           else
             uv build --wheel --python ${{ matrix.python }} --find-links ${GITHUB_WORKSPACE}/packages/leann-core/dist
@@ -171,8 +176,14 @@ jobs:
             # Use system clang for better compatibility
             export CC=clang
             export CXX=clang++
-            # DiskANN requires macOS 13.3+ for sgesdd_ LAPACK function
+            # Set deployment target based on runner OS
-            export MACOSX_DEPLOYMENT_TARGET=13.3
+            if [[ "${{ matrix.os }}" == "macos-13" ]]; then
+              # DiskANN requires macOS 13.3+ for sgesdd_ LAPACK function
+              export MACOSX_DEPLOYMENT_TARGET=13.3
+            else
+              # macos-14+ runner - match the system libraries
+              export MACOSX_DEPLOYMENT_TARGET=14.0
+            fi
             uv build --wheel --python ${{ matrix.python }} --find-links ${GITHUB_WORKSPACE}/packages/leann-core/dist
           else
             uv build --wheel --python ${{ matrix.python }} --find-links ${GITHUB_WORKSPACE}/packages/leann-core/dist
@@ -208,13 +219,23 @@ jobs:
       - name: Repair wheels (macOS)
         if: runner.os == 'macOS'
         run: |
+          # Determine deployment target based on runner OS
+          # macOS 13 runners have libraries built for macOS 13
+          # macOS 14 runners have libraries built for macOS 14
+          if [[ "${{ matrix.os }}" == "macos-13" ]]; then
+            HNSW_TARGET="11.0"
+            DISKANN_TARGET="13.3"
+          else
+            # macos-14 runner - libraries are built for macOS 14
+            HNSW_TARGET="14.0"
+            DISKANN_TARGET="14.0"
+          fi
+
           # Repair HNSW wheel
           cd packages/leann-backend-hnsw
           if [ -d dist ]; then
-            # Set deployment target to ensure wheel compatibility with older macOS versions
+            export MACOSX_DEPLOYMENT_TARGET=$HNSW_TARGET
-            # This ensures the wheel is tagged for macOS 11.0+ compatibility
+            delocate-wheel -w dist_repaired -v --require-target-macos-version $HNSW_TARGET dist/*.whl
-            export MACOSX_DEPLOYMENT_TARGET=11.0
-            delocate-wheel -w dist_repaired -v --require-target-macos-version 11.0 dist/*.whl
             rm -rf dist
             mv dist_repaired dist
           fi
@@ -223,9 +244,8 @@ jobs:
           # Repair DiskANN wheel
           cd packages/leann-backend-diskann
           if [ -d dist ]; then
-            # DiskANN requires macOS 13.3+ for sgesdd_ LAPACK function
+            export MACOSX_DEPLOYMENT_TARGET=$DISKANN_TARGET
-            export MACOSX_DEPLOYMENT_TARGET=13.3
+            delocate-wheel -w dist_repaired -v --require-target-macos-version $DISKANN_TARGET dist/*.whl
-            delocate-wheel -w dist_repaired -v --require-target-macos-version 13.3 dist/*.whl
             rm -rf dist
             mv dist_repaired dist
           fi