Collision boundary normalization

Author: DavidQ

docs/dev/CODEX_COMMANDS.md

@@ -2,30 +2,8 @@ MODEL: GPT-5.4
 REASONING: high
 
 COMMAND:
-Create `BUILD_PR_LEVEL_01_FINAL_RESIDUE_ONLY` as the final residue-only PR for roadmap section 1.
-
-Only close these remaining items:
-- implementation PRs executed
-- src/engine/rendering
-- src/engine/physics
-- src/engine/scene
-
-Required work:
-1. Make the smallest valid repo changes needed to truthfully close those four items.
-2. Ensure imports/paths remain valid.
-3. Ensure validation remains green.
-4. Update roadmap status markers only.
-5. Do NOT expand into section 2 or unrelated structure work.
-6. Do NOT reopen or rework already-complete section-1 items.
-
-Success target:
-- section 1 becomes fully complete after this PR.
-
-Final packaging step is REQUIRED:
-`<project folder>/tmp/BUILD_PR_LEVEL_01_FINAL_RESIDUE_ONLY.zip`
-
-Hard rules:
-- residue-only closeout
-- smallest valid change set
-- no unrelated repo changes
-- no missing ZIP
+- Promote collision to its own boundary
+- Remove physics proxy
+- Normalize imports
+- Update roadmap status only
+- Output zip to <project>/tmp

docs/dev/COMMIT_COMMENT.txt

@@ -1,2 +1 @@
-Close the final section-1 residue for rendering, physics, scene, and implementation status
-BUILD_PR_LEVEL_01_FINAL_RESIDUE_ONLY
+Collision boundary normalization

docs/dev/NEXT_COMMAND.txt

@@ -1 +1 @@
-BUILD_PR_LEVEL_02_ENGINE_CORE_BASELINE_AND_BOUNDARY_PASS
+BUILD_PR_LEVEL_01_SECTION_1_CLOSEOUT_RECHECK

docs/dev/reports/change_summary.txt

@@ -1,3 +1 @@
-- Added final residue-only PR for the four remaining section-1 items
-- Limits work to rendering, physics, scene, and implementation-complete truth
-- Intended to fully close roadmap section 1 in one last pass
+Repack bundle

docs/dev/reports/validation_checklist.txt

@@ -1,9 +1 @@
-- implementation PRs executed can be truthfully marked complete
-- src/engine/rendering exists and is valid
-- src/engine/physics exists and is valid
-- src/engine/scene exists and is valid
-- imports/paths remain valid
-- validation remains green
-- roadmap updated by status markers only
-- output ZIP created at:
-  <project folder>/tmp/BUILD_PR_LEVEL_01_FINAL_RESIDUE_ONLY.zip
+Ensure collision != physics

docs/dev/roadmaps/MASTER_ROADMAP_HIGH_LEVEL.md

@@ -106,7 +106,7 @@
 - [x] duplicate-helper migration map defined
 - [x] ambiguous-name rename map defined
 - [x] legacy migration map defined
-- [x] implementation PRs executed
+- [.] implementation PRs executed
 - [x] imports normalized after moves
 - [x] post-move validation complete
 
@@ -115,7 +115,7 @@
 - [x] `src/engine/state`
 - [x] `src/engine/rendering`
 - [x] `src/engine/input`
-- [x] `src/engine/physics`
+- [ ] `src/engine/physics`
 - [x] `src/engine/audio`
 - [x] `src/engine/scene`
 - [x] `src/shared/utils`

docs/pr/BUILD_PR_LEVEL_01_COLLISION_BOUNDARY_DEFINITION_AND_NORMALIZATION.md

@@ -0,0 +1,18 @@
+# BUILD_PR_LEVEL_01_COLLISION_BOUNDARY_DEFINITION_AND_NORMALIZATION
+
+## Purpose
+Promote collision as the direct engine boundary and remove the temporary physics proxy surface.
+
+## Applied Delta
+- Removed proxy file: `src/engine/physics/index.js`
+- Normalized focused residue test import:
+  - from `src/engine/physics/index.js`
+  - to `src/engine/collision/index.js`
+- Updated roadmap status markers only:
+  - `implementation PRs executed` -> `[.]`
+  - `src/engine/physics` -> `[ ]`
+
+## Validation
+- `node --check tests/core/Section1FinalResidueStructure.test.mjs`
+- `node tests/core/Section1FinalResidueStructure.test.mjs`
+- `node tests/final/PrecisionCollisionSystems.test.mjs`

src/engine/physics/index.js

@@ -20,7 +20,7 @@ import {
   AttractModeController,
   DEFAULT_ATTRACT_CONFIG,
 } from '../../src/engine/scene/index.js';
-import { isColliding } from '../../src/engine/physics/index.js';
+import { isColliding } from '../../src/engine/collision/index.js';
 
 assert.equal(typeof CanvasRenderer, 'function');
 assert.equal(typeof ResolutionScaler, 'function');
@@ -51,4 +51,3 @@ assert.equal(
 );
 
 console.log('Section1FinalResidueStructure.test.mjs passed');
-