v0.1.6

Pure additive release. Two surface expansions and one backward-compatible schema addition:

• Intent surface — re-exports IntentTypeSchema constant and IntentType type from the package root. Adopters writing payload-aware receivers can now type their intent dispatch off the canonical Zod enum without reaching into a deep path.
• Key-entry surface — re-exports KeyStatusSchema, KeyRoleSchema, KeyEntrySchema constants and KeyStatus, KeyRole, KeyEntry, StoredKey types. Adopters wiring their own key-set storage and rotation can now type the persistence shapes without reaching into a deep path. CandidateKey was already root-exported.
• InkAuditInclusionSchema — adds an optional inclusionProof: z.array(z.string()).optional() field. Third-party auditor clients that verify Merkle inclusion proofs use this field; receivers that only check signatures can ignore it. Backward-compatible because the field is optional — receivers on 0.1.5 work unchanged on 0.1.6.

No wire-level changes. No behavior changes inside the existing functions.

Per the pre-1.0 policy this release publishes under the next dist-tag.