[ci] Fix windows runner by creating the build/bin folder and placing missing dll inside

Author: th-skam

.github/workflows/ci.yml

@@ -121,8 +121,9 @@ jobs:
           # Copying the ConstraintGeometry library there makes it discoverable without
           # affecting the release artifact (which is uploaded from WORKSPACE_INSTALL_PATH).
           if [[ "$RUNNER_OS" == "Windows" ]]; then
-            # On Windows, DLLs live directly in the build root (build/bin does not exist)
-            cp $GITHUB_WORKSPACE/downstream/ConstraintGeometry/install/bin/ConstraintGeometry.dll $WORKSPACE_BUILD_PATH/
+            # SOFA_PLUGIN_PATH includes build/bin on Windows; create it so SOFA can scan it
+            mkdir -p $WORKSPACE_BUILD_PATH/bin
+            cp $GITHUB_WORKSPACE/downstream/ConstraintGeometry/install/bin/ConstraintGeometry.dll $WORKSPACE_BUILD_PATH/bin/
           else
             cp $GITHUB_WORKSPACE/downstream/ConstraintGeometry/install/lib/libConstraintGeometry.* $WORKSPACE_BUILD_PATH/lib/
           fi