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| 1 | +# BUILD_PR_LEVEL_19_25_ENGINE_TOOL_BOUNDARY_FINAL_CONFIRMATION Report |
| 2 | + |
| 3 | +Date: 2026-04-17 |
| 4 | +Scope: Final docs-only confirmation gate for Phase 19 Track E (`confirm no tool-specific logic leaks into engine`). |
| 5 | + |
| 6 | +## Inputs Cross-Checked |
| 7 | +- `docs/dev/reports/BUILD_PR_LEVEL_19_23_ENGINE_TOOL_BOUNDARY_LEAK_VALIDATION_report.md` |
| 8 | +- `docs/dev/reports/BUILD_PR_LEVEL_19_24_ENGINE_TOOL_LEAK_REMEDIATION_GATE_report.md` |
| 9 | + |
| 10 | +## Historical Comparison |
| 11 | +- 19_23: **FAIL** for tool-specific logic in engine due to `src/engine/editor`, `src/engine/tooling`, `src/engine/pipeline`. |
| 12 | +- 19_24: Remediation moved those surfaces to `tools/shared/*`, removed legacy engine directories, and passed focused validation. |
| 13 | + |
| 14 | +## Final Re-Validation (This PR) |
| 15 | +Validation target: `src/engine` only. |
| 16 | + |
| 17 | +Checks executed: |
| 18 | +1. Legacy tool-layer directories present? |
| 19 | +- `src/engine/editor` |
| 20 | +- `src/engine/tooling` |
| 21 | +- `src/engine/pipeline` |
| 22 | + |
| 23 | +2. Engine import leakage to tools? |
| 24 | +- any `import/require` references from `src/engine` into `/tools/`. |
| 25 | + |
| 26 | +3. Engine import leakage to removed legacy layers? |
| 27 | +- any references to `/src/engine/editor/`, `/src/engine/tooling/`, `/src/engine/pipeline/` or local `./editor|./tooling|./pipeline` patterns. |
| 28 | + |
| 29 | +4. Known previously leaked tool symbols inside engine files? |
| 30 | +- `LevelEditor`, `TileMapEditor`, `EntityPlacementEditor`, `TimelineEditor` |
| 31 | +- `DeveloperConsole`, `RuntimeInspector`, `PropertyEditor`, `LiveTuningService`, `AssetBrowser`, `SceneGraphViewer`, `CapturePreviewRuntime`, `bootCapturePreview` |
| 32 | +- `AssetImportPipeline`, `TexturePreprocessPipeline`, `AudioPreprocessPipeline`, `ContentMigrationSystem`, `BuildAssetManifestSystem`, `ContentValidationPipeline` |
| 33 | + |
| 34 | +Results: |
| 35 | +- `ENGINE_FILE_COUNT = 272` |
| 36 | +- `LEGACY_DIRS_PRESENT = 0` |
| 37 | +- `ENGINE_TO_TOOLS_IMPORTS = 0` |
| 38 | +- `ENGINE_LEGACY_LAYER_IMPORTS = 0` |
| 39 | +- `KNOWN_LEAK_SYMBOL_HITS = 0` |
| 40 | + |
| 41 | +## Verdict |
| 42 | +- Final boundary confirmation: **PASS** |
| 43 | +- No tool-specific logic remains in `src/engine` per this validation gate. |
| 44 | + |
| 45 | +## Roadmap Status |
| 46 | +- Track E final item is already set to `[x]` in `docs/dev/roadmaps/MASTER_ROADMAP_HIGH_LEVEL.md`. |
| 47 | +- No roadmap text or status marker changes were required in this PR. |
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