Release v0.15.0 - xchain-vm - #8
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…uld reject Four toolkit-simulator parity defects: GUARD_GAS_CEILING was hand-copied from the indexer coin configs with no cross-repo pin, the authoring prompt taught a stale partial copy of metering.RESERVED_IDENTIFIERS, ContractSimulator.deploy() reproduced no part of the deploy gate so a deploy-rejected contract simulated green on non-genesis networks, and the in-process default diverged from the subprocess host-termination contract the chain runs under. Review round 7 findings #6877, #6878, #6879, #6880. Also carries review round 6's vm work.
Review-round fixes, with each claim re-verified against current code. Suite: 1064 passing, 0 failing (run on Linux; the isolated VM binding does not load on macOS from the shared install).
The pinned 5.0.4 is affected by a critical ExternalCopy advisory. Moving to 6.2.0 across the vm and both of its consumers, which have to agree because the consensus runtime pins an ABI and a validator fails closed against it. The bump also removes a constraint rather than adding one. 5.0.4 had no prebuilt binding, so every install compiled through node-gyp and the build failed on newer Node for a removed V8 API, which is what bounded these repos to Node 22 and what makes a shared checkout hostile to two platforms at once. 6.2.0 ships prebuilt bindings for both ABIs, so the dependency no longer sets the bound and an install lands the right binding for the host that runs it. Node 22 stays the bound for a different and still-live reason: the consensus runtime pins process.versions.modules and the validator refuses any other ABI. The engines rationale now says that rather than citing the build failure it no longer has. Adds a containment test over the isolate's reference surface, since a major version of the isolation boundary is the wrong thing to take on trust.
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Cuts xchain-vm for the v0.15.0 release train. 5 commits from master.
Changed