Refactor: Reorganize workspaces and remove assets/ directory

Workspace structure now:
- workspaces/{main,test}/obj/      (3D models)
- workspaces/{main,test}/shaders/  (WGSL shaders)
- workspaces/{main,test}/music/    (audio samples)

Changes:
- Moved workspaces/*/assets/music/ → workspaces/*/music/
- Updated assets.txt paths (assets/music/ → music/)
- Moved test_demo.{seq,track} to tools/
- Moved assets/originals/ → tools/originals/
- Removed assets/common/ (legacy, duplicated in workspaces)
- Removed assets/final/ (legacy, superseded by workspaces)
- Updated hot-reload paths in main.cc
- Updated CMake references for test_demo and validation
- Updated gen_spectrograms.sh paths

handoff(Claude): Workspace reorganization complete

1 files changed, 0 insertions, 58 deletions

diff --git a/assets/final/shaders/mesh_render.wgsl b/assets/final/shaders/mesh_render.wgsl
deleted file mode 100644
index 7390b06..0000000
--- a/assets/final/shaders/mesh_render.wgsl
+++ /dev/null
@@ -1,58 +0,0 @@
-#include "common_uniforms"
-#include "math/common_utils"
-
-@group(0) @binding(0) var<uniform> globals: GlobalUniforms;
-@group(0) @binding(1) var<storage, read> object_data: ObjectsBuffer;
-
-// Binding 2 is reserved for BVH (not used here but matches layout for simplicity)
-
-@group(0) @binding(3) var noise_tex: texture_2d<f32>;
-@group(0) @binding(4) var noise_sampler: sampler;
-@group(0) @binding(5) var sky_tex: texture_2d<f32>;
-
-struct VertexInput {
-    @location(0) position: vec3<f32>,
-    @location(1) normal: vec3<f32>,
-    @location(2) uv: vec2<f32>,
-};
-
-struct VertexOutput {
-    @builtin(position) clip_pos: vec4<f32>,
-    @location(0) world_pos: vec3<f32>,
-    @location(1) normal: vec3<f32>,
-    @location(2) uv: vec2<f32>,
-    @location(3) color: vec4<f32>,
-    @location(4) @interpolate(flat) instance_index: u32,
-};
-
-@vertex
-fn vs_main(in: VertexInput, @builtin(instance_index) instance_index: u32) -> VertexOutput {
-    let obj = object_data.objects[instance_index];
-    let world_pos = obj.model * vec4<f32>(in.position, 1.0);
-    
-    var out: VertexOutput;
-    out.clip_pos = globals.view_proj * world_pos;
-    out.world_pos = world_pos.xyz;
-    
-    // Transform normal from local to world space
-    out.normal = transform_normal(obj.inv_model, in.normal);
-    
-    out.uv = in.uv;
-    out.color = obj.color;
-    out.instance_index = instance_index;
-    return out;
-}
-
-#include "render/scene_query_mode"
-#include "render/shadows"
-#include "render/lighting_utils"
-
-@fragment
-fn fs_main(in: VertexOutput) -> @location(0) vec4<f32> {
-    let light_dir = normalize(vec3<f32>(1.0, 1.0, 1.0));
-    
-    let shadow = calc_shadow(in.world_pos, light_dir, 0.05, 20.0, in.instance_index);
-    let lit_color = calculate_lighting(in.color.rgb, in.normal, in.world_pos, shadow);
-    
-    return vec4<f32>(lit_color, in.color.a);
-}
\ No newline at end of file