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, 63 deletions

diff --git a/src/effects/placeholder_effect_v2.cc b/src/effects/placeholder_effect_v2.cc
deleted file mode 100644
index d1fa212..0000000
--- a/src/effects/placeholder_effect_v2.cc
+++ /dev/null
@@ -1,63 +0,0 @@
-// Placeholder effect v2 implementation - logs TODO warning once
-
-#include "effects/placeholder_effect_v2.h"
-#include "gpu/post_process_helper.h"
-#include "gpu/shaders.h"
-#include <cstdio>
-
-PlaceholderEffectV2::PlaceholderEffectV2(const GpuContext& ctx,
-                                         const std::vector<std::string>& inputs,
-                                         const std::vector<std::string>& outputs,
-                                         const char* placeholder_name)
-    : EffectV2(ctx, inputs, outputs), pipeline_(nullptr), bind_group_(nullptr),
-      sampler_(nullptr), name_(placeholder_name) {
-  // Log once on construction
-  fprintf(stderr, "TODO: %s not yet ported to v2, using passthrough\n", name_);
-  
-  uniforms_buffer_.init(ctx_.device);
-  pipeline_ = create_post_process_pipeline(ctx_.device, WGPUTextureFormat_RGBA8Unorm,
-                                           passthrough_v2_shader_wgsl);
-
-  WGPUSamplerDescriptor sampler_desc = {};
-  sampler_desc.addressModeU = WGPUAddressMode_ClampToEdge;
-  sampler_desc.addressModeV = WGPUAddressMode_ClampToEdge;
-  sampler_desc.addressModeW = WGPUAddressMode_ClampToEdge;
-  sampler_desc.magFilter = WGPUFilterMode_Linear;
-  sampler_desc.minFilter = WGPUFilterMode_Linear;
-  sampler_desc.mipmapFilter = WGPUMipmapFilterMode_Nearest;
-  sampler_desc.maxAnisotropy = 1;
-  sampler_ = wgpuDeviceCreateSampler(ctx_.device, &sampler_desc);
-}
-
-void PlaceholderEffectV2::render(WGPUCommandEncoder encoder,
-                                 const UniformsSequenceParams& params,
-                                 NodeRegistry& nodes) {
-  WGPUTextureView input_view = nodes.get_view(input_nodes_[0]);
-  WGPUTextureView output_view = nodes.get_view(output_nodes_[0]);
-
-  uniforms_buffer_.update(ctx_.queue, params);
-
-  pp_update_bind_group(ctx_.device, pipeline_, &bind_group_, input_view,
-                       uniforms_buffer_.get(), {nullptr, 0});
-
-  WGPURenderPassColorAttachment color_attachment = {
-    .view = output_view,
-#if !defined(DEMO_CROSS_COMPILE_WIN32)
-    .depthSlice = WGPU_DEPTH_SLICE_UNDEFINED,
-#endif
-    .loadOp = WGPULoadOp_Clear,
-    .storeOp = WGPUStoreOp_Store,
-    .clearValue = {0.0, 0.0, 0.0, 1.0}
-  };
-
-  WGPURenderPassDescriptor pass_desc = {};
-  pass_desc.colorAttachmentCount = 1;
-  pass_desc.colorAttachments = &color_attachment;
-
-  WGPURenderPassEncoder pass = wgpuCommandEncoderBeginRenderPass(encoder, &pass_desc);
-  wgpuRenderPassEncoderSetPipeline(pass, pipeline_);
-  wgpuRenderPassEncoderSetBindGroup(pass, 0, bind_group_, 0, nullptr);
-  wgpuRenderPassEncoderDraw(pass, 3, 1, 0, 0);
-  wgpuRenderPassEncoderEnd(pass);
-  wgpuRenderPassEncoderRelease(pass);
-}