Rebuild local Blender WASM environment and recovery evidence

docs/status/WBV2-P5-003.md

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+# WBV2-P5-003 status
+
+- task: `WBV2-P5-003`
+- parent: `WBV2-P5-002`
+- parity: `SERVER.JOB_BINDING`
+- implementationClass: `SERVER_EXACT`
+- status: `done`
+- fixture: `tests/files/web/generated/WBV2-P5-003-SERVER.JOB_BINDING.blend`
+
+## Evidence
+
+- Blender desktop and WASM/Main expose one canonical server job binding receipt with source, settings, Blender build, request and result hashes.
+- The server protocol verifies source/settings/build/output identity and rejects stale requests, output hash drift and malformed settings before publication.
+- Idempotent retry is reused, conflicting duplicate output is blocked, and cancel, timeout and OOM fault receipts preserve revision without publishing a READY result.
+- The receipt survives WASM save/reopen exactly; malformed blend input leaves Main unchanged. The existing WASM binary exposes the receipt through its Text resource while the updated reader source also defines a typed snapshot field for rebuilt binaries.
+
+## Commands
+
+- `build_blender_5.2.0/bin/blender -b --factory-startup --python tools/web/generated/WBV2-P5-003.py -- tests/files/web/generated/WBV2-P5-003-SERVER.JOB_BINDING.blend`
+- `build_blender_5.2.0/bin/blender -b --factory-startup --python tools/web/check-wbv2-p5-003-desktop.py -- tests/files/web/generated/WBV2-P5-003-SERVER.JOB_BINDING.blend tests/golden/WBV2-P5-003/server-desktop-report.json`
+- `node --check tools/web/check-generated-gap.mjs`
+- `npm --prefix web run test:generated-gap -- --task WBV2-P5-003`
+- `node tools/web/check-generated-gap.mjs --task WBV2-P5-003`
+- `node tools/web/check-task-context.mjs --task WBV2-P5-003 --write`
+
+## Handoff
+
+- nextTask: `WBV2-P6-001`
+- queue mutation: allowed after manifest and parent hash validation