v2.0.0 — Runtime Host v2 + Execution Boundary Seal

v2.0.0 — Runtime Host v2 + Execution Boundary Seal

This major release seals the Adamantine Wallet OS runtime boundary and freezes the execution_response_v2 contract.

The mobile runtime host (run_mobile_execution_call_v2) is now the authoritative execution entrypoint, with deterministic policy enforcement, strict nonce handling, and stable executor boundaries.

What is sealed
• Execution Response v2
• v: execution_response_v2
• Deterministic decision structure
• Stable reason_id
• Stable context_hash
• Locked artifacts shape
• Deterministic protection_mode
• Deterministic nonce semantics
• Runtime Host v2
• Strict policy injection
• Fail-closed enforcement
• Stable execution boundary
• No silent downgrade paths
• Proof Pack v2_0_0_runtime
• Allow / deny / hostile context mismatch cases
• Canonical JSON enforcement
• SHA-256 manifest lock
• Exact fixture-set matching
• CI-enforced deterministic replay tests

Determinism Guarantee
• 50-run replay stability verified
• Canonical JSON dumps enforced
• Manifest drift fails CI
• Hash drift fails CI

Compatibility

This is a major version bump.
The execution response contract is upgraded to v2.

Any structural change to execution_response_v2 requires a new major version.