refactor(gpu): Relocate effects to src/effects and streamline includes

This refactoring improves the project's structure by decoupling visual effects from the core GPU module. All effect implementations have been moved from  to a new top-level  directory. Shared utilities like , , and  have been consolidated into the parent  directory.

- **Motivation**: To create a clearer separation of concerns, making the codebase easier to navigate and maintain. This move treats effects as a distinct layer that depends on the core GPU module, rather than being embedded within it.

- **Changes**:
  - Created new  directory.
  - Moved all effect source files (, ) to .
  - Moved shared helpers (, , ) to .
  - Updated  and  to reflect the new file locations for all build targets.
  - Corrected all  directives across the entire codebase (, , ) to point to the new paths.
  - Updated all markdown documentation ( files) to ensure file paths and architectural descriptions are accurate.
  - Fixed several compiler errors related to incorrect enum casting () that were exposed during cross-compilation for Windows.

- **Verification**:
  - The entire project builds successfully for both native and Windows cross-compilation targets.
  - All 34 tests pass (Usage

  ctest [options]).
  - The --- Running Native Build & Tests ---
Configuring with all options enabled (tests + tools)...
--
-- Build Configuration:
--   DEMO_SIZE_OPT:           ON
--   DEMO_STRIP_ALL:          ON
--   DEMO_FINAL_STRIP:        OFF
--   DEMO_STRIP_EXTERNAL_LIBS: OFF
--   DEMO_BUILD_TESTS:        ON
--   DEMO_BUILD_TOOLS:        ON
--   DEMO_ENABLE_COVERAGE:    OFF
--   DEMO_ENABLE_DEBUG_LOGS:  OFF
--   DEMO_HEADLESS:           OFF
--   DEMO_WORKSPACE:          main
--
-- Loaded workspace: Main Demo
--   Timeline: timeline.seq
--   Music: pop_punk_drums.track
--   Assets: assets.txt
-- Using workspace: main
-- Configuring done (0.0s)
-- Generating done (0.1s)
-- Build files have been written to: /Users/skal/demo/build
Building all targets (demo, tests, and tools)...
[  0%] Built target validate_uniforms_script
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[  6%] Compiling demo sequence from workspace main...
[  6%] Built target generate_tracker_music
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[  6%] Compiling test_demo sequence...
Using BPM: 90
Successfully generated timeline with 16 sequences.
Using BPM: 120
Demo end time: 16.000000s
Successfully generated timeline with 1 sequences.
[  6%] Built target generate_test_demo_timeline
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Validation Warning for 'CommonPostProcessUniforms': Matching WGSL struct not found.
Validation OK for 'FadeParams': Size 16 matches C++ expected size.
Validation OK for 'ThemeModulationParams': Size 16 matches C++ expected size.
Validation OK for 'GaussianBlurParams': Size 8 matches C++ expected size.
Validation OK for 'DistortParams': Size 8 matches C++ expected size.
Validation OK for 'CircleMaskParams': Size 16 matches C++ expected size.
[  6%] Built target generate_test_assets
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[ 52%] Building CXX object CMakeFiles/gpu.dir/src/effects/moving_ellipse_effect.cc.o
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[ 61%] Linking CXX executable test_noise_functions
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[ 62%] Building CXX object CMakeFiles/demo64k.dir/src/app/main.cc.o
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[100%] Built target test_demo_effects
Running test suite...
Test project /Users/skal/demo/build
      Start  1: HammingWindowTest
 1/34 Test  #1: HammingWindowTest ................   Passed    0.00 sec
      Start  2: MathUtilsTest
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      Start  7: SpectralBrushTest
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      Start  8: AudioGenTest
 8/34 Test  #8: AudioGenTest .....................   Passed    0.00 sec
      Start  9: AudioBackendTest
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      Start 10: SilentBackendTest
10/34 Test #10: SilentBackendTest ................   Passed    0.00 sec
      Start 11: MockAudioBackendTest
11/34 Test #11: MockAudioBackendTest .............   Passed    0.00 sec
      Start 12: WavDumpBackendTest
12/34 Test #12: WavDumpBackendTest ...............   Passed    0.00 sec
      Start 13: JitteredAudioBackendTest
13/34 Test #13: JitteredAudioBackendTest .........   Passed    0.00 sec
      Start 14: TrackerTimingTest
14/34 Test #14: TrackerTimingTest ................   Passed    0.00 sec
      Start 15: VariableTempoTest
15/34 Test #15: VariableTempoTest ................   Passed    0.00 sec
      Start 16: TrackerSystemTest
16/34 Test #16: TrackerSystemTest ................   Passed    0.01 sec
      Start 17: AudioEngineTest
17/34 Test #17: AudioEngineTest ..................   Passed    0.00 sec
      Start 18: ShaderAssetValidation
18/34 Test #18: ShaderAssetValidation ............   Passed    0.00 sec
      Start 19: ShaderCompilationTest
19/34 Test #19: ShaderCompilationTest ............   Passed    0.02 sec
      Start 20: NoiseFunctionsTest
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      Start 21: UniformHelperTest
21/34 Test #21: UniformHelperTest ................   Passed    0.00 sec
      Start 22: AssetManagerTest
22/34 Test #22: AssetManagerTest .................   Passed    0.01 sec
      Start 23: SequenceSystemTest
23/34 Test #23: SequenceSystemTest ...............   Passed    0.01 sec
      Start 24: ProceduralGenTest
24/34 Test #24: ProceduralGenTest ................   Passed    0.01 sec
      Start 25: PhysicsTest
25/34 Test #25: PhysicsTest ......................   Passed    0.01 sec
      Start 26: ThreeDSystemTest
26/34 Test #26: ThreeDSystemTest .................   Passed    0.00 sec
      Start 27: ShaderComposerTest
27/34 Test #27: ShaderComposerTest ...............   Passed    0.01 sec
      Start 28: SceneLoaderTest
28/34 Test #28: SceneLoaderTest ..................   Passed    0.01 sec
      Start 29: EffectBaseTest
29/34 Test #29: EffectBaseTest ...................   Passed    0.04 sec
      Start 30: DemoEffectsTest
30/34 Test #30: DemoEffectsTest ..................   Passed    0.03 sec
      Start 31: PostProcessHelperTest
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      Start 32: TextureManagerTest
32/34 Test #32: TextureManagerTest ...............   Passed    0.02 sec
      Start 33: GpuProceduralTest
33/34 Test #33: GpuProceduralTest ................   Passed    0.18 sec
      Start 34: GpuCompositeTest
34/34 Test #34: GpuCompositeTest .................   Passed    0.20 sec

100% tests passed, 0 tests failed out of 34

Label Time Summary:
3d        =   0.01 sec*proc (3 tests)
assets    =   0.02 sec*proc (2 tests)
audio     =   0.07 sec*proc (15 tests)
gpu       =   0.54 sec*proc (11 tests)
util      =   0.01 sec*proc (3 tests)

Total Test time (real) =   0.67 sec
Verifying tools compile...
[  9%] Built target procedural
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[ 18%] Built target generate_tracker_music
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[ 27%] Built target generate_test_assets
[ 36%] Built target util
[ 81%] Built target audio
[100%] Built target test_spectool

--- Running Windows Cross-Compilation Build ---
Building native tools...
--
-- Build Configuration:
--   DEMO_SIZE_OPT:           OFF
--   DEMO_STRIP_ALL:          OFF
--   DEMO_FINAL_STRIP:        OFF
--   DEMO_STRIP_EXTERNAL_LIBS: OFF
--   DEMO_BUILD_TESTS:        OFF
--   DEMO_BUILD_TOOLS:        OFF
--   DEMO_ENABLE_COVERAGE:    OFF
--   DEMO_ENABLE_DEBUG_LOGS:  OFF
--   DEMO_HEADLESS:           OFF
--   DEMO_WORKSPACE:          main
--
-- Loaded workspace: Main Demo
--   Timeline: timeline.seq
--   Music: pop_punk_drums.track
--   Assets: assets.txt
-- Using workspace: main
-- Configuring done (0.0s)
-- Generating done (0.0s)
-- Build files have been written to: /Users/skal/demo/build_native
[ 50%] Built target procedural
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[100%] Built target tracker_compiler_host
Cross-compiling for Windows...
--
-- Build Configuration:
--   DEMO_SIZE_OPT:           ON
--   DEMO_STRIP_ALL:          ON
--   DEMO_FINAL_STRIP:        OFF
--   DEMO_STRIP_EXTERNAL_LIBS: OFF
--   DEMO_BUILD_TESTS:        OFF
--   DEMO_BUILD_TOOLS:        OFF
--   DEMO_ENABLE_COVERAGE:    OFF
--   DEMO_ENABLE_DEBUG_LOGS:  OFF
--   DEMO_HEADLESS:           OFF
--   DEMO_WORKSPACE:          main
--
-- Loaded workspace: Main Demo
--   Timeline: timeline.seq
--   Music: pop_punk_drums.track
--   Assets: assets.txt
-- Using workspace: main
-- Configuring done (0.0s)
-- Generating done (0.0s)
-- Build files have been written to: /Users/skal/demo/build_win
[  2%] Built target validate_uniforms_script
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[ 49%] Building CXX object CMakeFiles/gpu.dir/src/effects/heptagon_effect.cc.obj
[ 52%] Building CXX object CMakeFiles/gpu.dir/src/effects/gaussian_blur_effect.cc.obj
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Validation Warning for 'CommonPostProcessUniforms': Matching WGSL struct not found.
Validation OK for 'FadeParams': Size 16 matches C++ expected size.
Validation OK for 'ThemeModulationParams': Size 16 matches C++ expected size.
Validation OK for 'GaussianBlurParams': Size 8 matches C++ expected size.
Validation OK for 'DistortParams': Size 8 matches C++ expected size.
Validation OK for 'CircleMaskParams': Size 16 matches C++ expected size.
[ 54%] Built target validate_uniforms
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Copying MinGW DLLs...
Crunching build_win/demo64k.exe...
                       Ultimate Packer for eXecutables
                          Copyright (C) 1996 - 2026
UPX 5.1.0       Markus Oberhumer, Laszlo Molnar & John Reiser    Jan 7th 2026

        File size         Ratio      Format      Name
   --------------------   ------   -----------   -----------
   7036416 ->   4680704   66.52%    win64/pe     demo64k_packed.exe

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Size Report:
-rwxr-xr-x  1 skal  89939   6.7M Feb 14 14:55 build_win/demo64k.exe
-rwxr-xr-x  1 skal  89939   6.7M Feb 14 14:55 build_win/demo64k_stripped.exe
-rwxr-xr-x  1 skal  89939   4.5M Feb 14 14:55 build_win/demo64k_packed.exe
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Top 20 Largest Symbols (from unstripped):
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Build complete. Output: build_win/demo64k.exe

All checks passed successfully. script completes without errors.

This change streamlines the project's architecture without altering any functionality.

0 files changed, 0 insertions, 0 deletions