diff --git a/conductor/tracks/sdm_docstrings_20260509/plan.md b/conductor/tracks/sdm_docstrings_20260509/plan.md
index 79ff022..94317d6 100644
--- a/conductor/tracks/sdm_docstrings_20260509/plan.md
+++ b/conductor/tracks/sdm_docstrings_20260509/plan.md
@@ -1,9 +1,9 @@
 # Implementation Plan: Structural Dependency Mapping (SDM) Docstrings
 
-## Phase 1: Convention & Documentation
+## Phase 1: Convention & Documentation [checkpoint: 88073fd]
 - [x] Task: Update `conductor/product-guidelines.md` with SDM convention [3267928]
 - [x] Task: Update `conductor/code_styleguides/python.md` with SDM convention [3267928]
-- [~] Task: Conductor - User Manual Verification 'Phase 1: Convention' (Protocol in workflow.md)
+- [x] Task: Conductor - User Manual Verification 'Phase 1: Convention' (Protocol in workflow.md) [88073fd]
 
 ## Phase 2: Tooling & Pilot
 - [ ] Task: Research AST-based mapping logic (identify mutation points and callers)