Optics: add bounded HIP PSF replay and tile reduction experiments

Capture prepared events through a test-only producer consumer and measure serial and indexed parallel generation independently. Compare the production atomic kernel with bounded pixel-owned tile reductions while preserving double HDR, cache support, and direct fallback ordering.

Validate captured inputs, edge and multichunk fixtures, CPU/HIP renderer regressions, and 45 isolated final replays. Keep the production HIP algorithm unchanged because gains depend on event distribution.

Makefile

@@ -182,3 +182,17 @@ clean:
 
 -include $(RENDER_DEPS)
 include mk/reference_images.mk
+
+# Test-only producer consumer: never linked into a renderer.
+.PHONY: psf-capture
+psf-capture: $(BUILD_DIR)/capture_psf
+$(BUILD_DIR)/capture_psf: tests/capture_psf.c $(CORE_MINKOWSKI_SOURCES) | $(BUILD_DIR)
+	$(CC) $(CPPFLAGS) $(CFLAGS) $(BUILD_CFLAGS) $(OPENMP_FLAGS) -Isrc $< $(filter-out src/frame.c,$(CORE_MINKOWSKI_SOURCES)) $(LDLIBS) -o $@
+
+.PHONY: hip-psf-replay
+hip-psf-replay: $(BUILD_DIR)/replay_psf
+$(BUILD_DIR)/replay_psf: tests/replay_psf.hip src/hip_psf.hip src/hip_psf.h src/optics.h $(OBJECT_DIR)/$(HDR_BUILD_TAG)/src/optics.o | $(BUILD_DIR)
+	$(HIPCC) $(HIP_CXXFLAGS) $(OPENMP_FLAGS) -Isrc -x hip $< -x none $(filter %.o,$^) $(LDLIBS) $(HDR_LDLIBS) -o $@
+
+$(BUILD_DIR)/make_psf_fixture: tests/make_psf_fixture.c src/optics.c src/optics.h | $(BUILD_DIR)
+	$(CC) $(CPPFLAGS) $(CFLAGS) $(BUILD_CFLAGS) $(OPENMP_FLAGS) -Isrc $< src/optics.c $(LDLIBS) -o $@