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deepseek-harness/docs/rfc/README.md
T
Tianyi Cui a44f7f3486 docs: add RFCs 009-011 (session persistence + ACP support)
Three proposal documents, numbered in dependency order:

- RFC 009: an abstract, append-only, event-based SessionPersistence
  service over the existing SessionEvent log (no parallel persisted
  type), a JSONL impl, a SessionMeta header seam, and an async
  AgentLoop.resume path. Design informed by Codex/Claude Code/
  opencode/pi. Core design point; unblocks resume + ACP session/load.
- RFC 010: ACP (Agent Client Protocol) support as a dsh-acp
  client-driver plugin on @agentclientprotocol/sdk, mapping ACP onto
  the agent/* events and the tools/execute permission seam. Builds on
  009 for session/load; single active session.
- RFC 011: multiplex concurrent ACP sessions over one connection
  (bridge-layer change; downstream of 010).
2026-06-14 21:14:51 +08:00

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RFCs

Proposals for substantial future work — reviewed before implementation, unlike ADRs (which record decisions already made). Each RFC groups a related set of ideas from the quality/robustness proposal (2026-06-11); statuses move proposed → accepted → implemented (then usually graduate to an ADR).

# Title Status
001 Property-based testing for protocol-shaped code implemented
002 Mutation testing as the coverage counterweight proposed
003 Deterministic tests + replay invariant fixture + race stress proposed
004 Architectural rules: dependency-cruiser, adapter conformance kit proposed
005 Runtime arg validation, structured error taxonomy, dev-mode invariants implemented
006 Doc-sync enforcement and API extractor reports implemented (pts 1-2; pt 3 deferred)
007 Supply chain checks and vendor drift verification proposed
008 Deep-readonly public surfaces implemented (revised)
009 Durable session persistence — abstract, append-only, event-based store proposed
010 Agent Client Protocol (ACP) support for external editors proposed
011 Multiplex concurrent ACP sessions over one connection proposed