Add deterministic lane warm-start reuse and dependency hydration caching to reduce repeated Playwright initialization overhead - PR_26146_035-lane-warm-start-and-dependency-hydration-reuse

Author: ToolboxAid

docs/dev/reports/dependency_gating_report.md

@@ -1,6 +1,6 @@
 # Dependency Gating Report
 
-Generated: 2026-05-26T20:05:20.957Z
+Generated: 2026-05-26T20:22:17.979Z
 Status: PASS
 
 ## Gate Order

docs/dev/reports/dependency_hydration_reuse_report.md

@@ -0,0 +1,29 @@
+# Dependency Hydration Reuse Report
+
+Generated: 2026-05-26T20:22:17.979Z
+Status: PASS
+
+## Summary
+
+Reused dependency hydration: 4
+Invalidated dependency hydration: 0
+Generated dependency hydration: 0
+Prevented dependency graph hydration: 4
+Prevented helper resolution passes: 11
+Prevented fixture ownership traversal: 6
+
+## Hydration Decisions
+
+| Lane | Status | Helpers | Fixtures | Imports | Dependency Hydration Hash | Reason |
+| --- | --- | --- | --- | --- | --- | --- |
+| tool-runtime | REUSED | tests/helpers/playwrightRepoServer.mjs; tests/helpers/playwrightStorageIsolation.mjs; tests/helpers/playwrightV8CoverageReporter.mjs; tests/helpers/workspaceV2CoverageReporter.mjs | games/Asteroids/game.manifest.json; games/GravityWell/game.manifest.json; games/Pong/game.manifest.json; tests/fixtures/workspace-v2/uat.manifest.json | tests/helpers/playwrightRepoServer.mjs; tests/helpers/playwrightStorageIsolation.mjs; tests/helpers/playwrightV8CoverageReporter.mjs; tests/helpers/workspaceV2CoverageReporter.mjs | 0fecfc07e559cf38 | Dependency hydration reused from validated warm-start state. |
+| game-runtime | REUSED | tests/helpers/playwrightRepoServer.mjs; tests/helpers/playwrightV8CoverageReporter.mjs; tests/helpers/workspaceV2CoverageReporter.mjs | games/Asteroids/game.manifest.json | tests/helpers/playwrightRepoServer.mjs; tests/helpers/playwrightV8CoverageReporter.mjs; tests/helpers/workspaceV2CoverageReporter.mjs | 1e6d53ee82652bb2 | Dependency hydration reused from validated warm-start state. |
+| integration | REUSED | tests/helpers/playwrightRepoServer.mjs; tests/helpers/playwrightStorageIsolation.mjs; tests/helpers/playwrightV8CoverageReporter.mjs; tests/helpers/workspaceV2CoverageReporter.mjs | games/Pong/game.manifest.json | tests/helpers/playwrightRepoServer.mjs; tests/helpers/playwrightStorageIsolation.mjs; tests/helpers/playwrightV8CoverageReporter.mjs; tests/helpers/workspaceV2CoverageReporter.mjs | a26bcd0115fc4315 | Dependency hydration reused from validated warm-start state. |
+| engine-src | REUSED | none | none | src/engine/assets/AssetLoaderSystem.js; src/engine/assets/AssetRegistry.js; src/engine/assets/ImageAssetLoader.js; src/engine/audio/AudioService.js; src/engine/camera/Camera2D.js; src/engine/camera/Camera3D.js; src/engine/camera/CameraSystem.js; src/engine/core/Engine.js; src/engine/core/FixedTicker.js; src/engine/core/FrameClock.js; src/engine/core/RuntimeMetrics.js; src/engine/events/EventBus.js; src/engine/input/ActionInputService.js; src/engine/input/GamepadHapticsService.js; src/engine/input/GamepadInputAdapter.js; src/engine/input/InputMap.js; src/engine/input/InputService.js; src/engine/input/KeyboardState.js; src/engine/input/MouseState.js; src/engine/physics/arcadeBody.js; src/engine/physics/collision3d.js; src/engine/physics/drag.js; src/engine/physics/integration3d.js; src/engine/physics/scene3d.js; src/engine/rendering/CanvasRenderer.js; src/engine/rendering/LayeredRenderSystem.js; src/engine/scene/Scene.js; src/engine/scene/SceneManager.js; src/engine/systems/MovementSystem.js; src/engine/systems/PhysicsSystem.js | e13166ce3ced2d3e | Dependency hydration reused from validated warm-start state. |
+
+## Safeguards
+
+- Dependency hydration reuse is tied to manifest input, ownership, dependency graph, helper, fixture, and import hashes.
+- Stale hydration metadata is refreshed before runtime and is not reused silently.
+- Hydration invalidation does not trigger fallback broad discovery or unrelated lane execution.
+- Reused hydration avoids repeated helper resolution, fixture ownership traversal, and dependency graph hydration for compatible targeted runs.

docs/dev/reports/filesystem_scan_reduction_report.md

@@ -1,6 +1,6 @@
 # Filesystem Scan Reduction Report
 
-Generated: 2026-05-26T20:05:20.934Z
+Generated: 2026-05-26T20:22:17.964Z
 Status: PASS
 
 ## Scan Enforcement

docs/dev/reports/incremental_validation_report.md

@@ -1,6 +1,6 @@
 # Incremental Validation Report
 
-Generated: 2026-05-26T20:05:20.958Z
+Generated: 2026-05-26T20:22:17.980Z
 Status: PASS
 
 ## Reuse Summary

docs/dev/reports/lane_compilation_report.md

@@ -1,6 +1,6 @@
 # Lane Compilation Report
 
-Generated: 2026-05-26T20:05:20.957Z
+Generated: 2026-05-26T20:22:17.979Z
 Status: PASS
 
 ## Lane Graph

docs/dev/reports/lane_deduplication_report.md

@@ -1,6 +1,6 @@
 # Lane Deduplication Report
 
-Generated: 2026-05-26T20:05:20.957Z
+Generated: 2026-05-26T20:22:17.979Z
 Status: PASS
 
 ## Summary

docs/dev/reports/lane_input_validation_report.md

@@ -1,6 +1,6 @@
 # Lane Input Validation Report
 
-Generated: 2026-05-26T20:05:20.958Z
+Generated: 2026-05-26T20:22:17.980Z
 Status: PASS
 
 ## Input Files

docs/dev/reports/lane_runtime_optimization_report.md

@@ -1,11 +1,14 @@
 # Lane Runtime Optimization Report
 
-Generated: 2026-05-26T20:05:20.958Z
+Generated: 2026-05-26T20:22:17.979Z
 Status: PASS
 
 ## Runtime Cost Summary
 
 Reused runtime sessions: 3
+Reused warm-start lanes: 4
+Reused dependency hydration: 4
+Prevented redundant initialization: 4
 Prevented redundant browser launches: 4
 Prevented redundant lane execution: 2
 Baseline Playwright/browser launches: 8
@@ -24,16 +27,18 @@ No zero-browser, compilation, or dependency blockers were found.
 
 ## Lane Plans
 
-| Lane | Baseline Browser Launches | Scheduled Browser Launches | Commands | Reason |
-| --- | --- | --- | --- | --- |
-| tool-runtime | 3 | 2 | C:\nvm4w\nodejs\node.exe C:\Users\davidq\Documents\GitHub\HTML-JavaScript-Gaming\node_modules\@playwright\test\cli.js test tests/playwright/tools/AssetManagerV2.spec.mjs --grep "launch guard|temporary UAT context|rejects non-Workspace" --project=playwright --workers=1 --reporter=list; C:\nvm4w\nodejs\node.exe C:\Users\davidq\Documents\GitHub\HTML-JavaScript-Gaming\node_modules\@playwright\test\cli.js test tests/playwright/tools/PreviewGeneratorV2Baseline.spec.mjs tests/playwright/tools/CollisionInspectorV2.spec.mjs --project=playwright --workers=1 --reporter=list | Tool runtime lane validates focused tool behavior without treating unrelated stale product assertions as blockers. |
-| game-runtime | 4 | 1 | C:\nvm4w\nodejs\node.exe C:\Users\davidq\Documents\GitHub\HTML-JavaScript-Gaming\node_modules\@playwright\test\cli.js test tests/playwright/games/AsteroidsBackgroundAssetResolution.spec.mjs tests/playwright/games/AsteroidsBeatTiming.spec.mjs tests/playwright/games/AsteroidsGameSceneCleanup.spec.mjs tests/playwright/games/AsteroidsShipStateVisuals.spec.mjs --project=playwright --workers=1 --reporter=list | Game runtime lane validates explicit game-owned Playwright behavior only. |
-| integration | 1 | 1 | C:\nvm4w\nodejs\node.exe C:\Users\davidq\Documents\GitHub\HTML-JavaScript-Gaming\node_modules\@playwright\test\cli.js test tests/playwright/integration/GameIndexPreviewManifestResolution.spec.mjs --grep Pong --project=playwright --workers=1 --reporter=list | Integration lane validates explicit cross-surface handoffs only; broad all-game thumbnail coverage is outside the default targeted lane. |
-| engine-src | 0 | 0 | C:\nvm4w\nodejs\node.exe scripts/run-node-test-files.mjs tests/core/EngineCoreBoundaryBaseline.test.mjs tests/core/FrameClock.test.mjs tests/core/FixedTicker.test.mjs tests/assets/AssetLoaderSystem.test.mjs tests/audio/AudioService.test.mjs tests/input/InputMap.test.mjs tests/input/KeyboardState.test.mjs tests/input/MouseState.test.mjs tests/input/GamepadInputAdapter.test.mjs tests/input/GamepadHapticsService.test.mjs tests/render/Renderer.test.mjs | Engine/src lane validates reusable runtime surfaces through targeted node tests. |
+| Lane | Warm Start | Hydration | Baseline Browser Launches | Scheduled Browser Launches | Commands | Reason |
+| --- | --- | --- | --- | --- | --- | --- |
+| tool-runtime | REUSED | REUSED | 3 | 2 | C:\nvm4w\nodejs\node.exe C:\Users\davidq\Documents\GitHub\HTML-JavaScript-Gaming\node_modules\@playwright\test\cli.js test tests/playwright/tools/AssetManagerV2.spec.mjs --grep "launch guard|temporary UAT context|rejects non-Workspace" --project=playwright --workers=1 --reporter=list; C:\nvm4w\nodejs\node.exe C:\Users\davidq\Documents\GitHub\HTML-JavaScript-Gaming\node_modules\@playwright\test\cli.js test tests/playwright/tools/PreviewGeneratorV2Baseline.spec.mjs tests/playwright/tools/CollisionInspectorV2.spec.mjs --project=playwright --workers=1 --reporter=list | Tool runtime lane validates focused tool behavior without treating unrelated stale product assertions as blockers. |
+| game-runtime | REUSED | REUSED | 4 | 1 | C:\nvm4w\nodejs\node.exe C:\Users\davidq\Documents\GitHub\HTML-JavaScript-Gaming\node_modules\@playwright\test\cli.js test tests/playwright/games/AsteroidsBackgroundAssetResolution.spec.mjs tests/playwright/games/AsteroidsBeatTiming.spec.mjs tests/playwright/games/AsteroidsGameSceneCleanup.spec.mjs tests/playwright/games/AsteroidsShipStateVisuals.spec.mjs --project=playwright --workers=1 --reporter=list | Game runtime lane validates explicit game-owned Playwright behavior only. |
+| integration | REUSED | REUSED | 1 | 1 | C:\nvm4w\nodejs\node.exe C:\Users\davidq\Documents\GitHub\HTML-JavaScript-Gaming\node_modules\@playwright\test\cli.js test tests/playwright/integration/GameIndexPreviewManifestResolution.spec.mjs --grep Pong --project=playwright --workers=1 --reporter=list | Integration lane validates explicit cross-surface handoffs only; broad all-game thumbnail coverage is outside the default targeted lane. |
+| engine-src | REUSED | REUSED | 0 | 0 | C:\nvm4w\nodejs\node.exe scripts/run-node-test-files.mjs tests/core/EngineCoreBoundaryBaseline.test.mjs tests/core/FrameClock.test.mjs tests/core/FixedTicker.test.mjs tests/assets/AssetLoaderSystem.test.mjs tests/audio/AudioService.test.mjs tests/input/InputMap.test.mjs tests/input/KeyboardState.test.mjs tests/input/MouseState.test.mjs tests/input/GamepadInputAdapter.test.mjs tests/input/GamepadHapticsService.test.mjs tests/render/Renderer.test.mjs | Engine/src lane validates reusable runtime surfaces through targeted node tests. |
 
 ## Runtime Savings Observations
 
 - Zero-browser preflight, lane compilation, and dependency validation run once per targeted runner invocation.
+- Validated warm-start lanes reuse deterministic initialization state when manifest and dependency hashes are unchanged.
+- Reused dependency hydration avoids repeated helper resolution and fixture ownership traversal for compatible targeted runs.
 - Compatible Playwright specs with matching options are kept in shared CLI invocations to avoid redundant browser startup.
 - Unselected lanes are not scheduled after isolated targeted lane failures.
 - Workspace V2 and samples lanes are not escalated unless explicitly selected.

docs/dev/reports/lane_warm_start_report.md

@@ -0,0 +1,42 @@
+# Lane Warm-Start Report
+
+Generated: 2026-05-26T20:22:17.979Z
+Status: PASS
+Warm-start directory: docs/dev/reports/lane_warm_starts
+
+## Summary
+
+Reused warm-start lanes: 4
+Invalidated warm-start states: 0
+Generated warm-start states: 0
+Skipped warm-start states: 0
+Prevented redundant initialization: 4
+Prevented lane graph assembly: 4
+
+## Warm-Start Decisions
+
+| Lane | Status | Warm-Start Path | Manifest Hash | Warm-Start Hash | Dependency Hydration Hash | Reason |
+| --- | --- | --- | --- | --- | --- | --- |
+| tool-runtime | REUSED | docs/dev/reports/lane_warm_starts/tool-runtime.json | 999cd821c911cac6 | d09c1b2843983b2b | 0fecfc07e559cf38 | Manifest inputs, dependency graph, ownership metadata, helper placement, fixture placement, and lane configuration are unchanged. |
+| game-runtime | REUSED | docs/dev/reports/lane_warm_starts/game-runtime.json | 6b3ea783bd50d09f | 7df2baeee535208f | 1e6d53ee82652bb2 | Manifest inputs, dependency graph, ownership metadata, helper placement, fixture placement, and lane configuration are unchanged. |
+| integration | REUSED | docs/dev/reports/lane_warm_starts/integration.json | a0a414fdcda4d881 | d847a2b8545945e9 | a26bcd0115fc4315 | Manifest inputs, dependency graph, ownership metadata, helper placement, fixture placement, and lane configuration are unchanged. |
+| engine-src | REUSED | docs/dev/reports/lane_warm_starts/engine-src.json | 4b09c904c7f073c7 | 3e467919ebe3d492 | e13166ce3ced2d3e | Manifest inputs, dependency graph, ownership metadata, helper placement, fixture placement, and lane configuration are unchanged. |
+
+## Fast-Fail Safeguards
+
+No warm-start blocker findings were found before runtime.
+
+## Invalidation Rules
+
+- Targeted file changes invalidate the owning warm-start state through manifest input hashes.
+- Ownership metadata changes invalidate warm-start state before runtime scheduling.
+- Dependency graph changes invalidate warm-start state and dependency hydration reuse.
+- Helper or fixture placement changes invalidate the affected lane state.
+- Lane configuration changes invalidate warm-start state before Playwright launch.
+- Warm-start invalidation never expands into broad fallback lane execution.
+
+## Runtime Savings Observations
+
+- Reused warm-start state avoids rebuilding identical lane initialization data.
+- Reused state carries validated manifest, ownership, dependency, and hydration hashes into scheduling.
+- Generated or invalidated state is refreshed deterministically before runtime and remains scoped to selected lanes.

docs/dev/reports/lane_warm_starts/engine-src.json

@@ -0,0 +1,87 @@
+{
+  "commandsHash": "ef29170bd803e5aa",
+  "dependencyGraphHash": "e2570ebce03c46e3",
+  "dependencyHydration": {
+    "dependencyHydrationHash": "e13166ce3ced2d3e",
+    "fixtureHashes": {},
+    "fixtures": [],
+    "helperHashes": {},
+    "helpers": [],
+    "importHashes": {
+      "src/engine/assets/AssetLoaderSystem.js": "1079dbc1f02d3b1a",
+      "src/engine/assets/AssetRegistry.js": "6f09f4b9f08e692f",
+      "src/engine/assets/ImageAssetLoader.js": "c5cbaa10a707e41e",
+      "src/engine/audio/AudioService.js": "d34d91cb0f843a3d",
+      "src/engine/camera/Camera2D.js": "fd8ec387433e2c88",
+      "src/engine/camera/Camera3D.js": "b9eca57ee8184d85",
+      "src/engine/camera/CameraSystem.js": "2fe975f309173049",
+      "src/engine/core/Engine.js": "da804d00538620ae",
+      "src/engine/core/FixedTicker.js": "3990ab094244cb86",
+      "src/engine/core/FrameClock.js": "68fe99c149aae1db",
+      "src/engine/core/RuntimeMetrics.js": "bd3dc0615aabb243",
+      "src/engine/events/EventBus.js": "438bbca0fd5595b7",
+      "src/engine/input/ActionInputService.js": "87d24aa5e6722371",
+      "src/engine/input/GamepadHapticsService.js": "be88ad30bcfccaf0",
+      "src/engine/input/GamepadInputAdapter.js": "0e9819519d56234c",
+      "src/engine/input/InputMap.js": "a840baef430dbf1d",
+      "src/engine/input/InputService.js": "2b93f647588f3a91",
+      "src/engine/input/KeyboardState.js": "bfbea88db28f5cd3",
+      "src/engine/input/MouseState.js": "dad52e903669ae4a",
+      "src/engine/physics/arcadeBody.js": "bb75b68ad5c75ed0",
+      "src/engine/physics/collision3d.js": "8c2b4c2060d836ba",
+      "src/engine/physics/drag.js": "8f507a58529df7dc",
+      "src/engine/physics/integration3d.js": "441611ffe0372c50",
+      "src/engine/physics/scene3d.js": "14886eddbcda291b",
+      "src/engine/rendering/CanvasRenderer.js": "aaa2e6efe0114403",
+      "src/engine/rendering/LayeredRenderSystem.js": "f7ace3c8d0294f0d",
+      "src/engine/scene/Scene.js": "041dc376827ee06a",
+      "src/engine/scene/SceneManager.js": "faf66ecd4268b524",
+      "src/engine/systems/MovementSystem.js": "0bfe4654f7173672",
+      "src/engine/systems/PhysicsSystem.js": "263375133f68d541"
+    },
+    "imports": [
+      "src/engine/assets/AssetLoaderSystem.js",
+      "src/engine/assets/AssetRegistry.js",
+      "src/engine/assets/ImageAssetLoader.js",
+      "src/engine/audio/AudioService.js",
+      "src/engine/camera/Camera2D.js",
+      "src/engine/camera/Camera3D.js",
+      "src/engine/camera/CameraSystem.js",
+      "src/engine/core/Engine.js",
+      "src/engine/core/FixedTicker.js",
+      "src/engine/core/FrameClock.js",
+      "src/engine/core/RuntimeMetrics.js",
+      "src/engine/events/EventBus.js",
+      "src/engine/input/ActionInputService.js",
+      "src/engine/input/GamepadHapticsService.js",
+      "src/engine/input/GamepadInputAdapter.js",
+      "src/engine/input/InputMap.js",
+      "src/engine/input/InputService.js",
+      "src/engine/input/KeyboardState.js",
+      "src/engine/input/MouseState.js",
+      "src/engine/physics/arcadeBody.js",
+      "src/engine/physics/collision3d.js",
+      "src/engine/physics/drag.js",
+      "src/engine/physics/integration3d.js",
+      "src/engine/physics/scene3d.js",
+      "src/engine/rendering/CanvasRenderer.js",
+      "src/engine/rendering/LayeredRenderSystem.js",
+      "src/engine/scene/Scene.js",
+      "src/engine/scene/SceneManager.js",
+      "src/engine/systems/MovementSystem.js",
+      "src/engine/systems/PhysicsSystem.js"
+    ]
+  },
+  "dependencyHydrationHash": "e13166ce3ced2d3e",
+  "inputHash": "0f5dac5319ea6241",
+  "lane": "engine-src",
+  "laneConfigHash": "3d09ab7e47d8bc11",
+  "laneDefinitionHash": "266a66af3454fc0f",
+  "manifestHash": "4b09c904c7f073c7",
+  "ownership": "engine",
+  "warmStartHash": "3e467919ebe3d492",
+  "version": 1,
+  "generatedAt": "2026-05-26T20:21:56.770Z",
+  "manifestPath": "docs/dev/reports/lane_manifests/engine-src.json",
+  "sourceManifest": "persistent"
+}