refactor: complete removal of 'Effect' suffix from C++ class names

Update effect class definitions in headers and implementations to match
timeline.seq naming convention. All tests passing (34/34).

Classes renamed:
- PassthroughEffect → Passthrough
- GaussianBlurEffect → GaussianBlur
- PlaceholderEffect → Placeholder
- HeptagonEffect → Heptagon
- ParticlesEffect → Particles
- RotatingCubeEffect → RotatingCube
- Hybrid3DEffect → Hybrid3D
- FlashEffect → Flash
- PeakMeterEffect → PeakMeter

Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>

1 files changed, 5 insertions, 5 deletions

diff --git a/src/effects/rotating_cube_effect.cc b/src/effects/rotating_cube_effect.cc
index 57f0a83..1f56b8b 100644
--- a/src/effects/rotating_cube_effect.cc
+++ b/src/effects/rotating_cube_effect.cc
@@ -1,5 +1,5 @@
 // This file is part of the 64k demo project.
-// It implements RotatingCubeEffect (simplified v2 port).
+// It implements RotatingCube (simplified v2 port).
 
 #include "util/fatal_error.h"
 #include "effects/rotating_cube_effect.h"
@@ -7,7 +7,7 @@
 #include "gpu/gpu.h"
 #include "gpu/shaders.h"
 
-RotatingCubeEffect::RotatingCubeEffect(const GpuContext& ctx,
+RotatingCube::RotatingCube(const GpuContext& ctx,
                                            const std::vector<std::string>& inputs,
                                            const std::vector<std::string>& outputs)
     : Effect(ctx, inputs, outputs), depth_node_(outputs[0] + "_depth") {
@@ -100,19 +100,19 @@ RotatingCubeEffect::RotatingCubeEffect(const GpuContext& ctx,
   wgpuBindGroupLayoutRelease(bgl);
 }
 
-RotatingCubeEffect::~RotatingCubeEffect() {
+RotatingCube::~RotatingCube() {
   if (bind_group_)
     wgpuBindGroupRelease(bind_group_);
   if (pipeline_)
     wgpuRenderPipelineRelease(pipeline_);
 }
 
-void RotatingCubeEffect::declare_nodes(NodeRegistry& registry) {
+void RotatingCube::declare_nodes(NodeRegistry& registry) {
   // Declare depth buffer node
   registry.declare_node(depth_node_, NodeType::DEPTH24, -1, -1);
 }
 
-void RotatingCubeEffect::render(WGPUCommandEncoder encoder,
+void RotatingCube::render(WGPUCommandEncoder encoder,
                                   const UniformsSequenceParams& params,
                                   NodeRegistry& nodes) {
   rotation_ += 0.016f * 1.5f;