conductor(plan): Mark Phase 1 shader implementation as complete

conductor/tracks/frosted_glass_20260313/plan.md

@@ -1,11 +1,11 @@
 # Implementation Plan: Frosted Glass Background Effect
 
 ## Phase 1: Shader Development & Integration
-- [ ] Task: Audit `src/shader_manager.py` to identify existing background/post-process integration points.
-- [ ] Task: Write Tests: Verify `ShaderManager` can compile and bind a multi-pass blur shader.
-- [ ] Task: Implement: Add `FrostedGlassShader` (GLSL) to `src/shader_manager.py`.
-- [ ] Task: Implement: Integrate the blur shader into the `ShaderManager` lifecycle.
-- [ ] Task: Conductor - User Manual Verification 'Phase 1: Shader Development & Integration' (Protocol in workflow.md)
+- [x] Task: Audit `src/shader_manager.py` to identify existing background/post-process integration points. [1328bc1]
+- [x] Task: Write Tests: Verify `ShaderManager` can compile and bind a multi-pass blur shader. [1328bc1]
+- [x] Task: Implement: Add `FrostedGlassShader` (GLSL) to `src/shader_manager.py`. [1328bc1]
+- [x] Task: Implement: Integrate the blur shader into the `ShaderManager` lifecycle. [1328bc1]
+- [~] Task: Conductor - User Manual Verification 'Phase 1: Shader Development & Integration' (Protocol in workflow.md)
 
 ## Phase 2: Framebuffer Capture Pipeline
 - [ ] Task: Write Tests: Verify the FBO capture mechanism correctly samples the back buffer and stores it in a texture.