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/hybrid3_d_effect.cc b/src/effects/hybrid3_d_effect.cc
index 0e6ea35..0e44853 100644
--- a/src/effects/hybrid3_d_effect.cc
+++ b/src/effects/hybrid3_d_effect.cc
@@ -1,12 +1,12 @@
 // This file is part of the 64k demo project.
-// It implements Hybrid3DEffect (simplified v2 port).
+// It implements Hybrid3D (simplified v2 port).
 // TODO: Full Renderer3D integration with texture manager, noise assets
 #include "util/fatal_error.h"
 
 #include "effects/hybrid3_d_effect.h"
 #include <cmath>
 
-Hybrid3DEffect::Hybrid3DEffect(const GpuContext& ctx,
+Hybrid3D::Hybrid3D(const GpuContext& ctx,
                                    const std::vector<std::string>& inputs,
                                    const std::vector<std::string>& outputs)
     : Effect(ctx, inputs, outputs), depth_node_(outputs[0] + "_depth"),
@@ -86,7 +86,7 @@ Hybrid3DEffect::Hybrid3DEffect(const GpuContext& ctx,
   }
 }
 
-Hybrid3DEffect::~Hybrid3DEffect() {
+Hybrid3D::~Hybrid3D() {
   if (dummy_texture_view_)
     wgpuTextureViewRelease(dummy_texture_view_);
   if (dummy_texture_)
@@ -94,12 +94,12 @@ Hybrid3DEffect::~Hybrid3DEffect() {
   renderer_.shutdown();
 }
 
-void Hybrid3DEffect::declare_nodes(NodeRegistry& registry) {
+void Hybrid3D::declare_nodes(NodeRegistry& registry) {
   // Declare depth buffer node
   registry.declare_node(depth_node_, NodeType::DEPTH24, -1, -1);
 }
 
-void Hybrid3DEffect::render(WGPUCommandEncoder encoder,
+void Hybrid3D::render(WGPUCommandEncoder encoder,
                               const UniformsSequenceParams& params,
                               NodeRegistry& nodes) {
   // Update camera (orbiting)