diff --git a/conductor/tracks/system_context_exposure_20260322/plan.md b/conductor/tracks/system_context_exposure_20260322/plan.md
index 7e71262..6bbb59b 100644
--- a/conductor/tracks/system_context_exposure_20260322/plan.md
+++ b/conductor/tracks/system_context_exposure_20260322/plan.md
@@ -10,15 +10,15 @@ Focus: Make _SYSTEM_PROMPT configurable
 - [x] Task: Write tests for configurable system prompt 4f1bcea
 - [x] Task: Conductor - User Manual Verification 'Phase 1: Backend Changes' a0fb086
 
-## Phase 2: UI Implementation
+## Phase 2: UI Implementation [checkpoint: c3a114d]
 Focus: Add base prompt editor to AI Settings
 
-- [ ] Task: Add UI controls to _render_system_prompts_panel
-- [ ] Task: Implement checkbox for "Use Default Base"
-- [ ] Task: Implement collapsible base prompt editor
-- [ ] Task: Add "Reset to Default" button
-- [ ] Task: Write tests for UI controls
-- [ ] Task: Conductor - User Manual Verification 'Phase 2: UI Implementation'
+- [x] Task: Add UI controls to _render_system_prompts_panel c74971b
+- [x] Task: Implement checkbox for "Use Default Base" c74971b
+- [x] Task: Implement collapsible base prompt editor c74971b
+- [x] Task: Add "Reset to Default" button c74971b
+- [x] Task: Write tests for UI controls c74971b
+- [x] Task: Conductor - User Manual Verification 'Phase 2: UI Implementation' c3a114d
 
 ## Phase 3: Persistence & Provider Testing
 Focus: Ensure persistence and cross-provider compatibility