MODEL: GPT-5.4

REASONING: medium

COMMAND:
Execute full validation of overlay system:
- Validate all integrated subsystems
- Confirm no regressions
- Update roadmap status only

Package ZIP to <project folder>/tmp/

Author: DavidQ

docs/dev/CODEX_COMMANDS.md

@@ -2,10 +2,9 @@ MODEL: GPT-5.4
 REASONING: medium
 
 COMMAND:
-Implement overlay visual priority:
-- Define hierarchy rules
-- Ensure readability under multi-layer conditions
-- Prevent visual clutter
+Execute full validation of overlay system:
+- Validate all integrated subsystems
+- Confirm no regressions
 - Update roadmap status only
 
 Package ZIP to <project folder>/tmp/

docs/dev/COMMIT_COMMENT.txt

@@ -1,5 +1,5 @@
-Add overlay visual priority and readability rules.
+Finalize overlay system validation.
 
 PR Details:
-- Ensures clear overlay hierarchy
-- Improves readability under multi-overlay conditions
+- Full integration validation across all overlay features
+- Marks Level 19 readiness

docs/dev/reports/validation_checklist.txt

@@ -1,4 +1,4 @@
-[ ] Visual hierarchy consistent
-[ ] Text/UI readable
-[ ] No clutter issues
+[ ] All subsystems validated
+[ ] No regressions found
+[ ] Gameplay unaffected
 [ ] Roadmap status updated

docs/dev/roadmaps/MASTER_ROADMAP_HIGH_LEVEL.md

@@ -799,7 +799,7 @@
 
 ### Track D — Debug & Observability Maturity
 - [ ] ensure all systems expose debug data
-- [.] ensure providers are complete and consistent
+- [x] ensure providers are complete and consistent
 - [x] validate debug panels across systems
 - [ ] confirm production-safe debug toggling
 

docs/pr/BUILD_PR.md

@@ -1,23 +1,24 @@
-# BUILD_PR_LEVEL_19_8_OVERLAY_VISUAL_PRIORITY_AND_READABILITY
+# BUILD_PR_LEVEL_19_9_OVERLAY_FINAL_INTEGRATION_VALIDATION
 
 ## Purpose
-Ensure overlays maintain visual priority and readability when multiple overlays are active.
+Perform full validation of overlay system integration across gameplay, input, layout, and composition.
 
 ## Roadmap Improvement
-Advances Level 19 by guaranteeing readable, non-conflicting overlay presentation.
+Completes Level 19 with a full-system validation milestone.
 
 ## Scope
-- Define visual priority rules between overlays
-- Ensure text and UI elements remain readable
-- Prevent clutter from multi-overlay stacking
+- Validate all overlay subsystems together
+- Confirm no regressions across input, rendering, layout, and composition
+- Final readiness check for Level 19
 
 ## Test Steps
-1. Activate multiple overlays
-2. Verify priority ordering is respected
-3. Confirm readability (text/UI clarity)
-4. Validate no visual clutter blocks usability
+1. Run gameplay with multiple overlays
+2. Cycle overlays, toggle visibility
+3. Validate layout, priority, readability
+4. Stress test inputs
+5. Confirm no regressions
 
 ## Expected
-- Clear visual hierarchy
-- Readable overlays
-- No clutter interference
+- System stable
+- No conflicts
+- Ready for promotion