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Complete Level 18 Track D codebase consistency work in one bundled PR.
BUILD_PR_LEVEL_18_12_TRACK_D_CODEBASE_CONSISTENCY_COMPLETION - enforce single-class-per-file where applicable - eliminate import/export anti-patterns repo wide - consolidate duplicate helpers - normalize naming consistency - update the master roadmap in place under roadmap guard rules if execution-backed
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‎docs/dev/reports/change_summary.txt‎

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Docs-first closeout bundle for the remaining Section 16 dependency gate.
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BUILD_PR_LEVEL_18_12_TRACK_D_CODEBASE_CONSISTENCY_COMPLETION
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This PR asks Codex to confirm that the full real-network capability lane is complete
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and, if execution-backed, close the roadmap item that gates active phase-16 / 3D execution.
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Purpose
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- Complete Level 18 Track D (Codebase Consistency) with a single bounded implementation pass.
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What changed
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- Enforced single-class-per-file in affected sample surfaces:
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- Split `samples/shared/worldSystems.js` into class/function modules under `samples/shared/worldSystems/` and kept `samples/shared/worldSystems.js` as a stable barrel.
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- Split embedded classes from `samples/phase-06/0609/SpawnSystemScene.js` into:
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- `SampleSpawnSystem.js`
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- `SampleLifecycleSystem.js`
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- `SampleWorldStateSystem.js`
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- `SampleWorldEventsSystem.js`
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- Eliminated import/export anti-patterns in touched files by replacing import-then-export overlap with direct re-exports and alias imports where local use is required.
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- Consolidated duplicate helper usage onto stable shared surfaces:
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- inspector/network debug utilities now rely on shared `objectUtils`, `stringUtils`, `numberNormalization` exports instead of local duplicates.
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- Normalized naming consistency in touched scope:
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- removed `arguments[...]` access in `src/shared/utils/networkDebugUtils.js` in favor of explicit parameters.
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- Updated roadmap Track D status markers to complete (`[x]`) in place only.
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Bounded scope note
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- No start_of_day files were modified.
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- No engine-core feature behavior was changed; updates were consistency/structure-focused in targeted files only.

‎docs/dev/reports/file_tree.txt‎

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docs/
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docs/pr/
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docs/pr/BUILD_PR_LEVEL_16_1_PHASE16_NETWORK_GATE_COMPLETION.md
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docs/dev/
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docs/dev/codex_commands.md
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docs/dev/commit_comment.txt
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docs/dev/reports/
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docs/dev/reports/change_summary.txt
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docs/dev/reports/validation_checklist.txt
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docs/dev/reports/file_tree.txt
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BUILD_PR_LEVEL_18_12_TRACK_D_CODEBASE_CONSISTENCY_COMPLETION
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Modified
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- docs/dev/roadmaps/MASTER_ROADMAP_HIGH_LEVEL.md
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- games/Pacman/game/PacmanFullAINavigator.js
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- samples/phase-03/0326/game/PaddleInterceptWorld.js
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- samples/phase-06/0609/SpawnSystemScene.js
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- samples/shared/worldSystems.js
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- src/advanced/state/utils.js
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- src/engine/debug/inspectors/shared/inspectorUtils.js
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- src/engine/debug/network/shared/networkDebugUtils.js
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- src/engine/systems/PhysicsSystem.js
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- src/shared/number/numberUtils.js
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- src/shared/utils/networkDebugUtils.js
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Added
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- samples/phase-06/0609/SampleLifecycleSystem.js
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- samples/phase-06/0609/SampleSpawnSystem.js
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- samples/phase-06/0609/SampleWorldEventsSystem.js
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- samples/phase-06/0609/SampleWorldStateSystem.js
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- samples/shared/worldSystems/EventsSystem.js
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- samples/shared/worldSystems/LifecycleSystem.js
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- samples/shared/worldSystems/SpawnSystem.js
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- samples/shared/worldSystems/WorldStateSystem.js
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- samples/shared/worldSystems/distanceSq.js

‎docs/dev/reports/helper_consolidation_map.txt‎

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Helper Consolidation Map - Level 18 Track D
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Consolidated to stable shared homes
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1) Object helpers
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- Stable home: src/shared/utils/objectUtils.js
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- Consumers normalized:
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- src/engine/debug/inspectors/shared/inspectorUtils.js
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- src/engine/debug/network/shared/networkDebugUtils.js
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2) String sanitization helpers
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- Stable home: src/shared/utils/stringUtils.js (re-export surface)
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- Consumers normalized:
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- src/engine/debug/network/shared/networkDebugUtils.js
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- src/engine/debug/inspectors/shared/inspectorUtils.js
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3) Number normalization helpers
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- Stable home: src/shared/math/numberNormalization.js
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- Consumers normalized:
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- src/shared/number/numberUtils.js
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- src/engine/debug/network/shared/networkDebugUtils.js
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- src/shared/utils/networkDebugUtils.js
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4) Sample world systems class extraction
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- Stable grouped surface retained: samples/shared/worldSystems.js (barrel)
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- Implementation split to single-class modules under:
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- samples/shared/worldSystems/

‎docs/dev/reports/import_export_resolution_summary.txt‎

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Import/Export Resolution Summary - Level 18 Track D
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Resolved files and approach
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- games/Pacman/game/PacmanFullAINavigator.js
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- replaced import+re-export overlap with direct re-export and alias for local usage.
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- samples/phase-03/0326/game/PaddleInterceptWorld.js
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- removed re-export of imported `clamp` (kept local import-only use).
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- src/advanced/state/utils.js
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- switched to aliased local import and direct source re-export for `isPlainObject`.
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- src/engine/debug/inspectors/shared/inspectorUtils.js
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- replaced local duplicate object helpers with shared re-exports/import aliases.
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- converted numeric/string helper exports to direct source re-exports.
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- src/engine/debug/network/shared/networkDebugUtils.js
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- converted object/number/string exports to direct source re-exports.
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- aliased local imports for internal helper operations.
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- src/engine/systems/PhysicsSystem.js
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- removed import+re-export overlap for physics helpers.
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- retained direct re-export from physics barrel.
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- src/shared/number/numberUtils.js
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- removed import+re-export overlap.
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- kept direct source re-exports and alias import for local function use.
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- src/shared/utils/networkDebugUtils.js
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- removed import+re-export overlap for `asNumber` via alias import + direct re-export.
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Result
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- Post-change anti-pattern scan count: 0

‎docs/dev/reports/naming_normalization_summary.txt‎

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Naming Normalization Summary - Level 18 Track D
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Scope
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- Naming normalization was limited to touched files in this PR.
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Applied normalization
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1) Explicit parameter naming (removed implicit arguments access)
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- File: src/shared/utils/networkDebugUtils.js
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- Changes:
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- `toNetworkSnapshot(snapshot)` -> `toNetworkSnapshot(snapshot, sampleKey)`
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- `getCommandSnapshot(context)` -> `getCommandSnapshot(context, sampleKey)`
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- `commandLinesForTrace(context, args = [])` -> `commandLinesForTrace(context, args = [], options = {})`
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- Removed `arguments[1]`/`arguments[2]` usage.
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2) Alias naming for clarity where re-exports remain
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- Applied consistent aliasing (`toNumber`, `reverseDirection`, etc.) to avoid symbol ambiguity and import/export overlap.
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Result
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- Naming consistency improved in touched scope without runtime behavior changes.

‎docs/dev/reports/validation_checklist.txt‎

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[ ] Real-network capability lane inspected
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[ ] Required evidence gathered for all dependency-gate subareas
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[ ] Closure report written to docs/dev/reports
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[ ] Master roadmap updated in place only if execution-backed
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[ ] No roadmap text deleted or rewritten
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[ ] Scope remained limited to the single gate item
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Validation Checklist - BUILD_PR_LEVEL_18_12_TRACK_D_CODEBASE_CONSISTENCY_COMPLETION
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1) Consistency scan (execution-backed)
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- Command: custom node scanner (repo JS/MJS surfaces, excluding tests for class-per-file enforcement count)
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- Baseline findings:
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- CLASS_ISSUES: 2
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- samples/phase-06/0609/SpawnSystemScene.js (4 classes)
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- samples/shared/worldSystems.js (4 classes)
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- IMPORT_EXPORT overlaps: 8
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- games/Pacman/game/PacmanFullAINavigator.js
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- samples/phase-03/0326/game/PaddleInterceptWorld.js
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- src/advanced/state/utils.js
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- src/engine/debug/inspectors/shared/inspectorUtils.js
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- src/engine/debug/network/shared/networkDebugUtils.js
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- src/engine/systems/PhysicsSystem.js
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- src/shared/number/numberUtils.js
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- src/shared/utils/networkDebugUtils.js
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- Post-change findings:
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- CLASS_ISSUES: 0
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- IMPORT_EXPORT overlaps: 0
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2) Repo test execution
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- Command: node ./scripts/run-node-tests.mjs
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- Result: FAIL (out-of-scope pre-existing failure)
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- Failing test: tests/games/GravityValidation.test.mjs:147
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- Assertion: expected 1, actual 0
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3) Focused touched-surface test execution
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- Command: custom node runner with module hooks over targeted tests
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- Result: PASS (8/8)
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- tests/games/PaddleInterceptWorld.test.mjs
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- tests/games/PacmanFullAIValidation.test.mjs
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- tests/final/NetworkDebugAndServerDashboardCloseout.test.mjs
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- tests/final/DebugObservabilityMaturity.test.mjs
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- tests/samples/SamplesProgramCombinedPass.test.mjs
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- tests/shared/SharedNumberStringIdCloseout.test.mjs
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- tests/tools/DevConsoleIntegration.test.mjs
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- tests/runtime/Phase19RuntimeLifecycleValidation.test.mjs
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4) Syntax validation
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- Command: node --check on all changed/new JS files (19 files)
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- Result: PASS
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Conclusion
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- Track D scoped consistency violations resolved in touched scope and validated by execution.
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- Full-suite failure is recorded and isolated to an existing unrelated Gravity validation path.

‎docs/dev/reports/violation_inventory.txt‎

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Violation Inventory - Level 18 Track D
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Detection method
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- Repo scanner for JS/MJS files.
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- Class-per-file inventory excludes tests for enforcement applicability.
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- Import/export anti-pattern inventory flags files that import named symbols and also re-export same imported symbols from same file surface.
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Baseline inventory
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- Multi-class files (2):
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- samples/phase-06/0609/SpawnSystemScene.js (4)
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- samples/shared/worldSystems.js (4)
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- Import/export anti-pattern files (8):
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- games/Pacman/game/PacmanFullAINavigator.js (opposite)
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- samples/phase-03/0326/game/PaddleInterceptWorld.js (clamp)
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- src/advanced/state/utils.js (isPlainObject)
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- src/engine/debug/inspectors/shared/inspectorUtils.js (asNonNegativeInteger, asPositiveInteger, sanitizeText, toFiniteNumber)
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- src/engine/debug/network/shared/networkDebugUtils.js (asObject, asArray, asNumber)
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- src/engine/systems/PhysicsSystem.js (stepArcadeBody, applyDrag)
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- src/shared/number/numberUtils.js (toFiniteNumber, asFiniteNumber, asPositiveInteger)
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- src/shared/utils/networkDebugUtils.js (asNumber)
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Post-change inventory
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- Multi-class files: 0
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- Import/export anti-pattern files: 0

‎docs/dev/roadmaps/MASTER_ROADMAP_HIGH_LEVEL.md‎

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- [x] remove unstable or experimental surfaces
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### Track D � Codebase Consistency
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- [ ] single class per file enforcement
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- [ ] eliminate import/export anti-patterns repo wide
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- [ ] remove duplicate helpers
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- [ ] normalize naming consistency
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- [x] single class per file enforcement
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- [x] eliminate import/export anti-patterns repo wide
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- [x] remove duplicate helpers
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- [x] normalize naming consistency
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### Track E � CSS & UI Normalization
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- [ ] flatten CSS layers

‎games/Pacman/game/PacmanFullAINavigator.js‎

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03/25/2026
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PacmanFullAINavigator.js
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*/
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import { oppositeCardinalDirection as opposite } from '/src/shared/utils/index.js';
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import { oppositeCardinalDirection as reverseDirection } from '/src/shared/utils/index.js';
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const DIRS = Object.freeze({
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left: { x: -1, y: 0 },
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function chooseDirectionTowardTarget(grid, tileX, tileY, currentDirection, targetTile, tieBreakOrder) {
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const legal = getLegalDirections(grid, tileX, tileY);
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if (!legal.length) return null;
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const blockedReverse = opposite(currentDirection);
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const blockedReverse = reverseDirection(currentDirection);
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const candidates = legal.filter((d) => d !== blockedReverse);
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const valid = candidates.length ? candidates : legal;
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return ranked[0].dir;
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}
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export { DIRS, opposite, getLegalDirections, chooseDirectionTowardTarget };
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export { oppositeCardinalDirection as opposite } from '/src/shared/utils/index.js';
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export { DIRS, getLegalDirections, chooseDirectionTowardTarget };

‎samples/phase-03/0326/game/PaddleInterceptWorld.js‎

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}
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}
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export { clamp, reflectIntoLane, predictFutureBallCenterY, predictInterceptY };
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export { reflectIntoLane, predictFutureBallCenterY, predictInterceptY };

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