diff --git a/conductor/tracks/context_comp_slices_20260510/plan.md b/conductor/tracks/context_comp_slices_20260510/plan.md
index b272911..f3b3624 100644
--- a/conductor/tracks/context_comp_slices_20260510/plan.md
+++ b/conductor/tracks/context_comp_slices_20260510/plan.md
@@ -7,7 +7,7 @@ Focus: Extend custom_slices to support tags and comments
 - [x] Task 1.2: Update FileItem.to_dict() and from_dict() for new fields [976879d]
 - [x] Task 1.3: Write tests for custom_slices with annotations [976879d]
 
-## Phase 2: Slice Inspector Enhancement
+## Phase 2: Slice Inspector Enhancement [checkpoint: 31ecbe5]
 Focus: Visual AST highlighting with file content
 
 - [x] Task 2.1: Modify _render_ast_inspector_modal() to show file content with highlighted slices [976b241]