diff --git a/conductor/tracks/custom_shaders_20260309/plan.md b/conductor/tracks/custom_shaders_20260309/plan.md
index 0e8c6f3..ff3864d 100644
--- a/conductor/tracks/custom_shaders_20260309/plan.md
+++ b/conductor/tracks/custom_shaders_20260309/plan.md
@@ -13,12 +13,12 @@
 - [x] Task: Implement: Add custom title bar and window controls matching the application's theme. [59d7368]
 - [x] Task: Conductor - User Manual Verification 'Phase 2: Custom OS Window Frame Implementation' (Protocol in workflow.md) [b9ca69f]
 
-## Phase 3: Core Shader Pipeline Integration
+## Phase 3: Core Shader Pipeline Integration [checkpoint: 5ebce89]
 - [x] Task: Write Tests: Verify the shader manager class initializes without errors and can load a basic shader program. [ac4f63b]
 - [x] Task: Implement: Create `src/shader_manager.py` (or extend `src/shaders.py`) to handle loading, compiling, and binding true GPU shaders or advanced Faux-Shaders. [ac4f63b]
 - [x] Task: Write Tests: Verify shader uniform data can be updated from Python dictionaries/TOML configurations. [0938396]
 - [x] Task: Implement: Add support for uniform passing (time, resolution, mouse pos) to the shader pipeline. [0938396]
-- [~] Task: Conductor - User Manual Verification 'Phase 3: Core Shader Pipeline Integration' (Protocol in workflow.md)
+- [x] Task: Conductor - User Manual Verification 'Phase 3: Core Shader Pipeline Integration' (Protocol in workflow.md) [5ebce89]
 
 ## Phase 4: Specific Shader Implementations (CRT, Post-Process, Backgrounds)
 - [ ] Task: Write Tests: Verify background shader logic can render behind the main ImGui layer.