Static test vectors for the privacy-core MLS bridge and mesh protocol validation paths. These fixtures are loaded by test_mls_vectors.py and test_fault_injection.py and run on every PR.

Files

File	Purpose
`gate_mls_vectors.json`	Gate lifecycle: compose, encrypt, decrypt, add/remove member, rekey, epoch advance
`dm_mls_vectors.json`	DM lifecycle: key package export, session initiate/accept, encrypt/decrypt, welcome seal/unseal
`schema_rejection_vectors.json`	Malformed payloads that MUST be rejected by the schema registry
`fault_injection_vectors.json`	Corrupted, downgraded, tier-spoofed, and replayed messages for the fault-injection corpus