OClCollMeshEngn: Use uniq_ptr for Cl handle RAII

We no longer use a goto slide to deal with initialization errors
in setup()/finalize(). We use RAII instead.

stimBuffApis/livoxGen1/openClCollatingAndMeshingEngine.h

@@ -5,6 +5,7 @@
 #include <cstdint>
 #include <cstddef>
 #include <memory>
+#include <type_traits>
 #include <functional>
 #include <optional>
 #include <iostream>
@@ -26,6 +27,25 @@
 namespace smo {
 namespace stim_buff {
 
+// Custom deleters for OpenCL handles
+struct ClProgramDeleter
+{
+	void operator()(cl_program prog) const
+		{ if (prog) { clReleaseProgram(prog); } }
+};
+
+struct ClKernelDeleter
+{
+	void operator()(cl_kernel kernel) const
+		{ if (kernel) { clReleaseKernel(kernel); } }
+};
+
+// Type aliases for OpenCL handle unique_ptrs
+using ClProgramPtr = std::unique_ptr<
+	std::remove_pointer_t<cl_program>, ClProgramDeleter>;
+using ClKernelPtr = std::unique_ptr<
+	std::remove_pointer_t<cl_kernel>, ClKernelDeleter>;
+
 class PcloudStimulusProducer;
 
 class OpenClCollatingAndMeshingEngine
@@ -90,10 +110,10 @@ private:
 
 	// OpenCL infrastructure (managed by ComputeManager)
 	std::shared_ptr<smo::compute::ComputeDevice> computeDevice;
-	cl_program slotCompactorProgram;
-	cl_program collateProgram;
-	cl_kernel slotCompactorKernel;
-	cl_kernel collateKernel;
+	ClProgramPtr slotCompactorProgram;
+	ClProgramPtr collateProgram;
+	ClKernelPtr slotCompactorKernel;
+	ClKernelPtr collateKernel;
 
 	// OpenCL buffers (managed by ComputeManager)
 	std::shared_ptr<smo::compute::ClBuffer> clAssemblyBufferClBuffer;
@@ -145,9 +165,13 @@ private:
 
 	// Private helper methods
 	bool compileAndPrepareKernel(
+		const std::shared_ptr<smo::compute::ComputeDevice>& computeDevice,
 		const char* kernelSource, size_t kernelSourceLen,
-		const char* kernelName, cl_program& program, cl_kernel& kernel);
-	bool compileAndPrepareKernels();
+		const char* kernelName, ClProgramPtr& program, ClKernelPtr& kernel);
+	bool compileAndPrepareKernels(
+		const std::shared_ptr<smo::compute::ComputeDevice>& computeDevice,
+		ClProgramPtr& slotCompactorProgram, ClProgramPtr& collateProgram,
+		ClKernelPtr& slotCompactorKernel, ClKernelPtr& collateKernel);
 	bool setupSlotCompactorsArgs(
 		StagingBuffer& assemblyBuff, uint32_t nSucceeded);
 	bool setupCollateDgramsArgs(