WBV2-P4-004 status

task: WBV2-P4-004
parent: WBV2-P4-003
parity: SIMULATION.CACHE_LIFECYCLE
implementationClass: LOCAL_BOUNDED
status: done
fixture: tests/files/web/generated/WBV2-P4-004-SIMULATION.CACHE_LIFECYCLE.blend

Evidence

Blender desktop and WASM/Main expose the same simulation source slice: one active rigid body, one passive collision body, and frame range 1..4. Save/reopen preserves the physicsSimulation manifest and settings exactly.
A bounded two-frame Simulation cache manifest verifies its revision binding, content hash, contiguous frame hashes, deterministic sim2- key, and frame selection. A source revision change produces a different key and is not publishable.
Corrupt payloads, cancelled verification, and invalid cache data fail closed with stable codes. LRU planning protects the active cache and satisfies the small budget without releasing protected bytes.

build_blender_5.2.0/bin/blender -b --factory-startup --python tools/web/generated/WBV2-P4-004.py -- tests/files/web/generated/WBV2-P4-004-SIMULATION.CACHE_LIFECYCLE.blend
build_blender_5.2.0/bin/blender -b --factory-startup --python tools/web/check-wbv2-p4-004-desktop.py -- tests/files/web/generated/WBV2-P4-004-SIMULATION.CACHE_LIFECYCLE.blend tests/golden/WBV2-P4-004/simulation-desktop-report.json
node --check tools/web/check-generated-gap.mjs
npm --prefix web run test:generated-gap -- --task WBV2-P4-004
node tools/web/check-generated-gap.mjs --task WBV2-P4-004
node tools/web/check-task-context.mjs --task WBV2-P4-004 --write