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https://github.com/deepseek-ai/deepseek-harness
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b3ea13749c
Lifts the RFC 010 single-session-per-connection cap: the bridge now runs N concurrent sessions over one connection, each mapped to its own LoopAgent. - packages/acp: live sessions held in a Map<sessionId, SessionRecord> with an agent→sessionId reverse WeakMap so agent/* events (which carry only the Agent) demux in O(1). Every session/event and agent/status is routed strictly to its owning record — concurrent sessions never cross-settle or interleave their session/update notifications. Per-session state: one in-flight prompt each, session/cancel aborts+settles only its own agent/prompt, session/load reserves a per-id load slot (distinct ids load concurrently; re-loading a live id is rejected), and disposal drains every live session in parallel to quiescence. - packages/tool-bash: record each background task's owning agent at spawn and keep it for the executor's lifetime (NOT cleared on completion). bash_output/bash_kill reject a task owned by a different agent (a task with no owner is open; a no-agent caller can't access an owned task). Task ids are global and predictable, so this is the fence that stops one session's agent from reading/killing another session's background task. - Per-session permission ownership and a per-agent disposer seam stay deferred (depend on the deferred permission gate); the reverse map the gate will route through is in place. RFC 011 stays `proposed`. - Tests: two sessions stream concurrently without interleave; cross-session cancel isolation; per-session in-flight enforcement; dispose-all-to-quiescence; bash cross-session read/kill rejected (+ no-agent and unowned-task cases). - Docs: RFC 011 implementation-status note; acp + tool-bash READMEs; example MVP-limitations updated. 100% per-file coverage maintained.
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 |
| 012 | Optional Code Mode — model writes TypeScript against an SDK of all tools | proposed |