koh / a5a6a4881aa7

migrate koh sent-header literals onto protocol.headers, offer/unoffer error-code checks onto protocol.err, envelope version onto protocol.PROTOCOL_VERSION, and dedupe size/inline constants (v1.28.6)

dev · 3 weeks ago · 2026-06-19 · 14.0 MB

session: protocol spine · agent: claude-opus-4-8

parent: c2cb572d8200