docs(specs): add ACP v2 crate migration plan to 013-acp spec#6654
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Documents the planned migration from agent-client-protocol 1.2.0 to 2.0.0 (schema pin resolved between 1.5.0/1.6.0 at implementation time): breaking-changes resolution table, the crate-major-vs-wire- protocol-version invariant with its compile-enforcement argument, mandatory pre-merge wire gate and live round-trip test requirements, and reconciliation of stale present-tense version references. No source changes; spec update only.
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This was referenced Jul 23, 2026
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Summary
agent-client-protocol1.2.0 to 2.0.0 (schema pin resolved between 1.5.0/1.6.0 at implementation time) inspecs/013-acp/spec.md.ProtocolVersion::LATESTis cfg-gated toV1unlessunstable_protocol_v2is forwarded, which Zeph does not do), a mandatory pre-merge wire gate and live round-trip test requirements, and reconciles ~15 stale present-tense version references that predated this update.Process
Produced via the spec-driven team-develop chain: architect (plan) → critic (2 rounds, verdict escalated from
significanttoapprovedafter independently verifyingProtocolVersion::LATESTcfg-gating against the upstreamagent-client-protocol-schemasource) → sdd (spec authoring, 1 review round to fix a version-reference defect) → reviewer (approved).Test plan
git diff --statconfirms onlyspecs/013-acp/spec.mdandspecs/README.mdchanged