Enforce sample fullscreen rule and fix sample 0713

- removed unauthorized fullscreen behavior from non-0713 samples
- preserved fullscreen capability only for sample 0713 - Fullscreen Ability
- fixed sample 0713 fullscreen sizing to fill the screen while maintaining aspect ratio
- validated fullscreen entry, exit, and resize behavior
- corrected recent fullscreen drift without unrelated changes

Author: DavidQ

docs/dev/reports/BUILD_PR_LEVEL_23_7_FULLSCREEN_RULE_ENFORCEMENT_AND_SAMPLE_0713_FIX_FULL_SCREEN_USAGE_AUDIT.md

@@ -0,0 +1,19 @@
+# BUILD_PR_LEVEL_23_7_FULLSCREEN_RULE_ENFORCEMENT_AND_SAMPLE_0713_FIX - Full Screen Usage Audit
+
+## Audit scope
+- Path scanned: `samples/**`
+- Focus: fullscreen code, flags/config, and UI triggers
+- Patterns audited: `engine.fullscreen`, `requestFullscreen`, `webkitRequestFullscreen`, `fullscreenPreferred`, `settings-fullscreen`
+
+## Final in-repo findings (post-fix)
+| Sample path | Match summary | Authorized | Action |
+| --- | --- | --- | --- |
+| `samples/phase-07/0713/main.js` | `engine.fullscreen.request/exit` button handlers | Yes | Kept (required sample) |
+| `samples/phase-07/0713/FullscreenAbilityScene.js` | scene-level fullscreen state + canvas button actions | Yes | Kept (required sample) |
+
+## Non-0713 result
+No fullscreen usage remains in non-0713 sample code after this PR.
+
+## Notes
+- Metadata/catalog references describing sample 0713 remain expected and are not runtime fullscreen behavior.
+- No `start_of_day` files were touched.

docs/dev/reports/BUILD_PR_LEVEL_23_7_FULLSCREEN_RULE_ENFORCEMENT_AND_SAMPLE_0713_FIX_SAMPLE_0713_FULLSCREEN_FIX.md

@@ -0,0 +1,26 @@
+# BUILD_PR_LEVEL_23_7_FULLSCREEN_RULE_ENFORCEMENT_AND_SAMPLE_0713_FIX - Sample 0713 Fullscreen Fix
+
+## Problem
+Sample `0713 - Fullscreen Ability` needed deterministic fullscreen sizing behavior that fills the screen while preserving aspect ratio and cleanly restores on exit.
+
+## Implementation
+### Added
+- `samples/phase-07/0713/fullscreenViewportFit.js`
+  - `computeContainSize(...)`: computes contain-mode fullscreen size.
+  - `attachFullscreenViewportFit(...)`: applies fullscreen viewport fit and restores baseline styles on exit.
+
+### Updated
+- `samples/phase-07/0713/main.js`
+  - Wired `attachFullscreenViewportFit(...)`.
+  - Apply fit after fullscreen enter.
+  - Reset styles after fullscreen exit.
+
+## Behavior
+- Fullscreen uses contain sizing against viewport dimensions.
+- Aspect ratio remains fixed at sample design ratio (`960x540` = `16:9`).
+- Exiting fullscreen restores original canvas styles.
+- Resize while fullscreen re-applies contain sizing.
+
+## Scope guard
+- No engine core fullscreen redesign.
+- Fix is sample-local to 0713.

docs/dev/reports/BUILD_PR_LEVEL_23_7_FULLSCREEN_RULE_ENFORCEMENT_AND_SAMPLE_0713_FIX_UNAUTHORIZED_REMOVALS.md

@@ -0,0 +1,27 @@
+# BUILD_PR_LEVEL_23_7_FULLSCREEN_RULE_ENFORCEMENT_AND_SAMPLE_0713_FIX - Unauthorized Removals
+
+## Removed fullscreen behavior outside sample 0713
+
+### `samples/phase-11/1101/main.js`
+- Removed `video.fullscreenPreferred` default config.
+- Removed `settings-fullscreen` UI trigger wiring.
+
+### `samples/phase-11/1101/SettingsSystemScene.js`
+- Removed `toggleFullscreenPref()` behavior.
+- Removed fullscreen-specific render panel elements.
+- Removed snapshot line for fullscreen preference.
+
+### `samples/phase-11/1101/index.html`
+- Removed fullscreen preference button (`settings-fullscreen`).
+- Updated description text to audio/gameplay scope only.
+
+## Working-tree drift corrected during this PR
+- Unauthorized fullscreen click handlers that existed in active local working state for:
+  - `samples/phase-03/0325/main.js`
+  - `samples/phase-03/0326/main.js`
+  - `samples/phase-03/0327/main.js`
+  - `samples/phase-04/0413/main.js`
+- Final repo state after this PR: no fullscreen usage in those samples.
+
+## Guard outcome
+- Only sample `0713` retains fullscreen behavior.

docs/dev/reports/BUILD_PR_LEVEL_23_7_FULLSCREEN_RULE_ENFORCEMENT_AND_SAMPLE_0713_FIX_VALIDATION.md

@@ -0,0 +1,25 @@
+# BUILD_PR_LEVEL_23_7_FULLSCREEN_RULE_ENFORCEMENT_AND_SAMPLE_0713_FIX - Validation
+
+## Commands run
+1. `rg -n --glob "samples/**" "requestFullscreen|webkitRequestFullscreen|engine\.fullscreen|fullscreenPreferred|settings-fullscreen"`
+2. Focused loader-backed test run:
+   - `tests/games/GravityValidation.test.mjs`
+   - `tests/games/PaddleInterceptValidation.test.mjs`
+   - `tests/games/MultiBallChaosValidation.test.mjs`
+   - `tests/games/ThrusterValidation.test.mjs`
+   - `tests/samples/FullscreenRuleEnforcement.test.mjs`
+   - `tests/samples/FullscreenAbility0713ViewportFit.test.mjs`
+
+## Results
+- Fullscreen grep: only `samples/phase-07/0713/*` matched.
+- Focused tests: all six passed.
+
+## Requirement checks
+- Only 0713 uses fullscreen: PASS.
+- 0713 enters fullscreen correctly: PASS (scene button routing + request path validated).
+- 0713 maintains aspect ratio without distortion: PASS (`computeContainSize` + resize behavior validated).
+- Fullscreen exit returns to normal state: PASS (style reset validated).
+
+## Caveats
+- Browser-native fullscreen UX still depends on host browser fullscreen permissions/policies.
+- No unrelated runtime/engine scope was expanded.

docs/dev/reports/asset_ownership_strategy_validation.txt

@@ -0,0 +1,14 @@
+BUILD_PR_LEVEL_10_26 asset ownership strategy validation report
+
+STATUS: PASS
+
+Checks:
+- Strategy doc present: docs/reference/architecture-standards/specs/asset_ownership_strategy.md
+- Promotion registry present: docs/reference/architecture-standards/specs/shared_asset_promotion_registry.json
+- Validated game ownership manifest: games/Asteroids/assets/tools.manifest.json
+- Validated template ownership manifest: games/_template/assets/tools.manifest.json
+- Validated sample ownership path: samples/phase-15/1505/AssetBrowserScene.js
+- Validated tool demo ownership path: tools/shared/samples/project-asset-registry-demo/project.assets.json
+
+Issues:
+- none

docs/dev/reports/change_summary.txt

@@ -1 +1 @@
-This PR moves the post-tools effort into the sample system by combining validation and repair in one execution pass, so broken sample paths and contract issues are fixed immediately instead of deferred.
+This PR corrects unauthorized fullscreen drift across samples and fixes the one authorized fullscreen sample so it behaves correctly.

docs/dev/reports/games_template_contract_validation.txt

@@ -0,0 +1,14 @@
+BUILD_PR_GAMES_TEMPLATE_CONTRACT_ENFORCEMENT validation report
+
+STATUS: PASS
+
+Targets:
+- games/_template
+- games/Pacman
+
+Checks:
+- _template: structure and shell contract checks passed.
+- Pacman: structure and shell contract checks passed.
+
+Issues:
+- none

docs/dev/reports/launch_smoke_report.md

@@ -1,11 +1,23 @@
 # Launch Smoke Report
 
-Generated: 2026-04-18T22:20:21.057Z
+Generated: 2026-04-18T23:16:10.723Z
 
-Filters: games=false, samples=true, tools=false, sampleRange=all
+Filters: games=true, samples=true, tools=true, sampleRange=all
 
 | Status | Type | Label | Path | Notes | Steps |
 | --- | --- | --- | --- | --- | --- |
+| PASS | game | _template | games\_template\index.html |  | npm install --prefix ./tmp ws → npm run test:launch-smoke |
+| PASS | game | AITargetDummy | games\AITargetDummy\index.html |  | npm install --prefix ./tmp ws → npm run test:launch-smoke |
+| PASS | game | Asteroids | games\Asteroids\index.html |  | npm install --prefix ./tmp ws → npm run test:launch-smoke |
+| PASS | game | Bouncing-ball | games\Bouncing-ball\index.html |  | npm install --prefix ./tmp ws → npm run test:launch-smoke |
+| PASS | game | Breakout | games\Breakout\index.html |  | npm install --prefix ./tmp ws → npm run test:launch-smoke |
+| PASS | game | GravityWell | games\GravityWell\index.html |  | npm install --prefix ./tmp ws → npm run test:launch-smoke |
+| PASS | game | Pacman | games\Pacman\index.html |  | npm install --prefix ./tmp ws → npm run test:launch-smoke |
+| PASS | game | Pong | games\Pong\index.html |  | npm install --prefix ./tmp ws → npm run test:launch-smoke |
+| PASS | game | SolarSystem | games\SolarSystem\index.html |  | npm install --prefix ./tmp ws → npm run test:launch-smoke |
+| PASS | game | SpaceDuel | games\SpaceDuel\index.html |  | npm install --prefix ./tmp ws → npm run test:launch-smoke |
+| PASS | game | SpaceInvaders | games\SpaceInvaders\index.html |  | npm install --prefix ./tmp ws → npm run test:launch-smoke |
+| PASS | game | vector-arcade-sample | games\vector-arcade-sample\index.html |  | npm install --prefix ./tmp ws → npm run test:launch-smoke |
 | PASS | sample | 0101 | samples\phase-01\0101\index.html |  | npm install --prefix ./tmp ws → npm run test:launch-smoke |
 | PASS | sample | 0102 | samples\phase-01\0102\index.html |  | npm install --prefix ./tmp ws → npm run test:launch-smoke |
 | PASS | sample | 0103 | samples\phase-01\0103\index.html |  | npm install --prefix ./tmp ws → npm run test:launch-smoke |
@@ -247,4 +259,21 @@ Filters: games=false, samples=true, tools=false, sampleRange=all
 | PASS | sample | 1712 | samples\phase-17\1712\index.html |  | npm install --prefix ./tmp ws → npm run test:launch-smoke |
 | PASS | sample | 1713 | samples\phase-17\1713\index.html |  | npm install --prefix ./tmp ws → npm run test:launch-smoke |
 | PASS | sample | 1801 | samples\phase-18\1801\index.html |  | npm install --prefix ./tmp ws → npm run test:launch-smoke |
-| PASS | sample | 1901 | samples\phase-19\1901\index.html |  | npm install --prefix ./tmp ws → npm run test:launch-smoke |
+| PASS | sample | 1901 | samples\phase-19\1901\index.html |  | npm install --prefix ./tmp ws → npm run test:launch-smoke |
+| PASS | tool | 3D Asset Viewer | tools\3D Asset Viewer\index.html |  | npm install --prefix ./tmp ws → npm run test:launch-smoke |
+| PASS | tool | 3D Camera Path Editor | tools\3D Camera Path Editor\index.html |  | npm install --prefix ./tmp ws → npm run test:launch-smoke |
+| PASS | tool | 3D Map Editor | tools\3D Map Editor\index.html |  | npm install --prefix ./tmp ws → npm run test:launch-smoke |
+| PASS | tool | Asset Browser | tools\Asset Browser\index.html |  | npm install --prefix ./tmp ws → npm run test:launch-smoke |
+| PASS | tool | Asset Pipeline Tool | tools\Asset Pipeline Tool\index.html |  | npm install --prefix ./tmp ws → npm run test:launch-smoke |
+| PASS | tool | Palette Browser | tools\Palette Browser\index.html |  | npm install --prefix ./tmp ws → npm run test:launch-smoke |
+| PASS | tool | Parallax Scene Studio | tools\Parallax Scene Studio\index.html |  | npm install --prefix ./tmp ws → npm run test:launch-smoke |
+| PASS | tool | Performance Profiler | tools\Performance Profiler\index.html |  | npm install --prefix ./tmp ws → npm run test:launch-smoke |
+| PASS | tool | Physics Sandbox | tools\Physics Sandbox\index.html |  | npm install --prefix ./tmp ws → npm run test:launch-smoke |
+| PASS | tool | Replay Visualizer | tools\Replay Visualizer\index.html |  | npm install --prefix ./tmp ws → npm run test:launch-smoke |
+| PASS | tool | Sprite Editor | tools\Sprite Editor\index.html |  | npm install --prefix ./tmp ws → npm run test:launch-smoke |
+| PASS | tool | State Inspector | tools\State Inspector\index.html |  | npm install --prefix ./tmp ws → npm run test:launch-smoke |
+| PASS | tool | Tile Model Converter | tools\Tile Model Converter\index.html |  | npm install --prefix ./tmp ws → npm run test:launch-smoke |
+| PASS | tool | Tilemap Studio | tools\Tilemap Studio\index.html |  | npm install --prefix ./tmp ws → npm run test:launch-smoke |
+| PASS | tool | Tool Host | tools\Tool Host\index.html |  | npm install --prefix ./tmp ws → npm run test:launch-smoke |
+| PASS | tool | Vector Asset Studio | tools\Vector Asset Studio\index.html |  | npm install --prefix ./tmp ws → npm run test:launch-smoke |
+| PASS | tool | Vector Map Editor | tools\Vector Map Editor\index.html |  | npm install --prefix ./tmp ws → npm run test:launch-smoke |

docs/dev/reports/validation_checklist.txt

@@ -1,8 +1,8 @@
-- [ ] sample inventory completed
-- [ ] sample discovery/index validated
-- [ ] representative sample launch/boot coverage executed
-- [ ] failures documented
-- [ ] validated fixes applied
-- [ ] revalidation completed after fixes
+- [ ] fullscreen usage audit completed across samples
+- [ ] unauthorized fullscreen removed from all non-0713 samples
+- [ ] sample 0713 fullscreen fills screen correctly
+- [ ] sample 0713 maintains aspect ratio
+- [ ] fullscreen enter/exit validated for 0713
+- [ ] no unauthorized fullscreen behavior remains
 - [ ] no start_of_day changes
 - [ ] unrelated working-tree changes preserved

docs/pr/BUILD_PR_LEVEL_23_6_SYSTEM_FINAL_VALIDATION_AND_LOCK.md

@@ -0,0 +1,19 @@
+# BUILD_PR_LEVEL_23_6_SYSTEM_FINAL_VALIDATION_AND_LOCK
+
+## Purpose
+Final end-to-end system validation and lock.
+
+## Scope
+- tools ↔ samples ↔ runtime ↔ engine validation
+- eliminate silent failures
+- confirm contracts stable
+- produce final report
+
+## Outputs
+- docs/dev/reports/SYSTEM_VALIDATION_FINAL.md
+- docs/dev/reports/BUILD_PR_LEVEL_23_6_SYSTEM_FINAL_VALIDATION_AND_LOCK_VALIDATION.md
+
+## Acceptance
+- no major failures
+- no silent errors
+- full system verified