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- Removed assets/final/ (legacy, superseded by workspaces)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, 27 deletions

diff --git a/assets/final/shaders/distort.wgsl b/assets/final/shaders/distort.wgsl
deleted file mode 100644
index 5d35129..0000000
--- a/assets/final/shaders/distort.wgsl
+++ /dev/null
@@ -1,27 +0,0 @@
-@group(0) @binding(0) var smplr: sampler;
-@group(0) @binding(1) var txt: texture_2d<f32>;
-
-#include "common_uniforms"
-
-struct DistortParams {
-    strength: f32,
-    speed: f32,
-};
-
-@group(0) @binding(2) var<uniform> uniforms: CommonUniforms;
-@group(0) @binding(3) var<uniform> params: DistortParams;
-
-@vertex fn vs_main(@builtin(vertex_index) i: u32) -> @builtin(position) vec4<f32> {
-    var pos = array<vec2<f32>, 3>(
-        vec2<f32>(-1, -1),
-        vec2<f32>(3, -1),
-        vec2<f32>(-1, 3)
-    );
-    return vec4<f32>(pos[i], 0.0, 1.0);
-}
-
-@fragment fn fs_main(@builtin(position) p: vec4<f32>) -> @location(0) vec4<f32> {
-    let uv = p.xy / uniforms.resolution;
-    let dist = params.strength * uniforms.audio_intensity * sin(uv.y * 20.0 + uniforms.time * params.speed * 5.0);
-    return textureSample(txt, smplr, uv + vec2<f32>(dist, 0.0));
-}