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, 0 insertions, 128 deletions

diff --git a/src/gpu/sequence_v2.h b/src/gpu/sequence_v2.h
deleted file mode 100644
index 2197a82..0000000
--- a/src/gpu/sequence_v2.h
+++ /dev/null
@@ -1,128 +0,0 @@
-// Sequence v2: Explicit node system with DAG effect routing
-// Replaces implicit framebuffer ping-pong with compile-time optimized nodes
-
-#pragma once
-
-#include "gpu/gpu.h"
-#include "gpu/uniform_helper.h"
-#include "util/mini_math.h"
-#include <map>
-#include <memory>
-#include <string>
-#include <vector>
-
-class EffectV2;
-
-enum class NodeType {
-  U8X4_NORM,   // RGBAu8 normalized (0-1) - default Source/Sink
-  F32X4,       // RGBA float32
-  F16X8,       // 8-channel float16
-  DEPTH24,     // Depth buffer
-  COMPUTE_F32, // Compute buffer
-};
-
-struct Node {
-  NodeType type;
-  int width;
-  int height;
-  WGPUTexture texture;
-  WGPUTextureView view;
-  std::vector<WGPUTextureView> mip_views; // For multi-target render
-};
-
-struct UniformsSequenceParams {
-  vec2 resolution;
-  float aspect_ratio;
-  float time;           // Per-sequence relative time
-  float beat_time;      // Musical beats
-  float beat_phase;     // Fractional beat 0.0-1.0
-  float audio_intensity;
-  float _pad;
-};
-static_assert(sizeof(UniformsSequenceParams) == 32,
-              "UniformsSequenceParams must be 32 bytes for WGSL alignment");
-
-class NodeRegistry {
- public:
-  NodeRegistry(WGPUDevice device, int default_width, int default_height);
-  ~NodeRegistry();
-
-  // Declare new node with explicit type/dimensions
-  void declare_node(const std::string& name, NodeType type, int width,
-                    int height);
-
-  // Declare aliased node (ping-pong optimization)
-  void declare_aliased_node(const std::string& name,
-                            const std::string& alias_of);
-
-  // Retrieve views
-  WGPUTextureView get_view(const std::string& name);
-  std::vector<WGPUTextureView>
-  get_output_views(const std::vector<std::string>& names);
-
-  // Resize all nodes
-  void resize(int width, int height);
-
-  // Check if node exists
-  bool has_node(const std::string& name) const;
-
-  // Register external view (for source/sink managed externally)
-  void set_external_view(const std::string& name, WGPUTextureView view);
-
- private:
-  WGPUDevice device_;
-  int default_width_;
-  int default_height_;
-  std::map<std::string, Node> nodes_;
-  std::map<std::string, std::string> aliases_; // name -> backing node name
-
-  void create_texture(Node& node);
-};
-
-struct EffectDAGNode {
-  std::shared_ptr<EffectV2> effect;
-  std::vector<std::string> input_nodes;
-  std::vector<std::string> output_nodes;
-  int execution_order; // Topologically sorted
-};
-
-class SequenceV2 {
- public:
-  SequenceV2(const GpuContext& ctx, int width, int height);
-  virtual ~SequenceV2() = default;
-
-  // Virtual methods (most sequences use defaults)
-  virtual void preprocess(float seq_time, float beat_time, float beat_phase,
-                          float audio_intensity);
-  virtual void postprocess(WGPUCommandEncoder encoder);
-  virtual void render_effects(WGPUCommandEncoder encoder);
-
-  void resize(int width, int height);
-
-  // Initialize effect nodes (call at end of subclass constructor)
-  void init_effect_nodes();
-
-  // Set surface texture view for rendering (sink node)
-  void set_sink_view(WGPUTextureView view) {
-    nodes_.set_external_view("sink", view);
-  }
-
-  // Set source texture view (input framebuffer)
-  void set_source_view(WGPUTextureView view) {
-    nodes_.set_external_view("source", view);
-  }
-
-  // Test accessor
-  const std::vector<EffectDAGNode>& get_effect_dag() const {
-    return effect_dag_;
-  }
-
- protected:
-  const GpuContext& ctx_;
-  int width_;
-  int height_;
-  NodeRegistry nodes_;
-  std::vector<EffectDAGNode> effect_dag_;
-  UniformsSequenceParams params_;
-  UniformBuffer<UniformsSequenceParams> uniforms_buffer_;
-};