P1: Independent TTP conformance, cryptographic key management and operational resilience #82

Merged PR #77 and PR #79 add bounded JS/Python/Go negative testing, signature bindings, fail-closed authority, and Node-issued Go verification. Independent production proof remains outstanding.

• Publish versioned, normative cross-language canonical JSON and signed trust/receipt conformance vectors; include duplicate keys, Unicode, float edge cases, clock skew and resource limits.
• Independent non-BlockSiFr implementation passes vectors with signed, tampered, revoked, replayed and expired claims. Verify interoperability with Go, Node and Python under a pinned release.
• Integrate real trusted issuer registry (KMS/HSM, key rotation and revocation) rather than a caller-provided PEM or mutable local manifest.
• Durable multi-process/multi-node transactional replay and receipt storage, corruption/failure, crash-recovery and 100+ concurrent redemption tests.
• Independent target-side verification of actual effect completion; typed failure/status receipts after asynchronous effects.
• Red-team the GitHub privileged pull_request_target workflow, approval chain and all issuer/role/delegation boundaries.
• Integrate enterprise attestations via trusted issuer and signature checks, not scores supplied by plugins.
• Observe low-latency budget, denial rates and measured policy-effectiveness in a permissioned, synthetic staging workload.
• Obtain external review signoff; never claim official standards certification based on self-tests.

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