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, 34 insertions, 0 deletions

diff --git a/src/effects/gaussian_blur_effect.h b/src/effects/gaussian_blur_effect.h
new file mode 100644
index 0000000..8bf34dc
--- /dev/null
+++ b/src/effects/gaussian_blur_effect.h
@@ -0,0 +1,34 @@
+// Gaussian blur effect v2 - single-pass blur
+
+#pragma once
+
+#include "gpu/effect.h"
+#include "gpu/uniform_helper.h"
+
+struct GaussianBlurParams {
+  float strength = 1.0f;
+  float strength_audio = 0.5f;
+  float stretch = 1.0f;
+  float _pad = 0.0f;
+};
+static_assert(sizeof(GaussianBlurParams) == 16,
+              "GaussianBlurParams must be 16 bytes");
+
+class GaussianBlurEffect : public Effect {
+ public:
+  GaussianBlurEffect(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:
+  WGPURenderPipeline pipeline_;
+  WGPUBindGroup bind_group_;
+  WGPUSampler sampler_;
+  GaussianBlurParams blur_params_;
+  UniformBuffer<GaussianBlurParams> params_buffer_;
+  UniformBuffer<UniformsSequenceParams> uniforms_buffer_;
+};
+