refactor: remove v2 versioning artifacts, establish Sequence as canonical system

Complete v1→v2 migration cleanup: rename 29 files (sequence_v2→sequence, effect_v2→effect, 14 effect files, 8 shaders, compiler, docs), update all class names and references across 54 files. Archive v1 timeline. System now uses standard naming with all versioning removed. 30/34 tests passing.

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

1 files changed, 36 insertions, 0 deletions

diff --git a/src/effects/particles_effect.h b/src/effects/particles_effect.h
new file mode 100644
index 0000000..76c2ef4
--- /dev/null
+++ b/src/effects/particles_effect.h
@@ -0,0 +1,36 @@
+// This file is part of the 64k demo project.
+// It declares the ParticlesEffect.
+
+#pragma once
+
+#include "gpu/effect.h"
+#include "gpu/gpu.h"
+#include "gpu/uniform_helper.h"
+#include <vector>
+
+// Particle structure
+static const int NUM_PARTICLES = 10000;
+
+struct Particle {
+  float pos[4];
+  float vel[4];
+  float rot[4];
+  float color[4];
+};
+
+class ParticlesEffect : public Effect {
+ public:
+  ParticlesEffect(const GpuContext& ctx,
+                    const std::vector<std::string>& inputs,
+                    const std::vector<std::string>& outputs);
+  void render(WGPUCommandEncoder encoder,
+              const UniformsSequenceParams& params,
+              NodeRegistry& nodes) override;
+
+ private:
+  ComputePass compute_pass_;
+  RenderPass render_pass_;
+  GpuBuffer particles_buffer_;
+  UniformBuffer<UniformsSequenceParams> uniforms_;
+};
+