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Nicky LeachandPaperclip
802f2af154
## Thinking Path > - Paperclip is the open source app people use to manage AI agents for work > - The adapter utilities package provides transport code for sandbox agents > - The retired `duplex_v1` broker no longer produces or consumes body-chunk frames > - Dead protocol code remains in the host codec, gateway copy, bridge options, and tests > - This pull request removes that dead code and keeps the READY handshake unchanged > - The benefit is a smaller transport surface with fewer unused paths to maintain ## Linked Issues or Issue Description **What existing behavior does this improve?** This change improves the adapter utilities code that supports sandbox duplex readiness and frame handling. **Subsystem affected** `packages/adapter-utils/` — sandbox transport codecs, execution targets, and callback bridge tests. **Current behavior** The repository keeps body-chunk frame types, validators, a body spool, decoder limits, and tests after the `duplex_v1` broker removal. No live producer or consumer uses this code. **Proposed behavior** Remove the unused body-chunk protocol code and retain the READY handshake, its strict checks, and its size limits. **Reason and benefit** The removal reduces dead code and keeps the host and embedded gateway paths easier to inspect. It adds no new behavior. **Breaking changes** The removed frame types now decode as `unknown_type`. The live readiness gate already ignores those frames. The READY handshake stays byte-for-byte compatible. **Additional context** This cleanup follows [PR #12171](https://github.com/paperclipai/paperclip/pull/12171), which removed the duplex broker. ## What Changed - Remove `duplex-body-spool.ts` and its test. - Remove unused body-chunk frame types, validators, decoder code, vectors, and limits. - Remove the unused `reassembledBody` option and decoder limit environment entry. - Remove the embedded gateway decoder copy and the unused frame type map. - Keep the READY handshake and its existing boundary tests unchanged in behavior. ## Verification - `pnpm -F @paperclip/adapter-utils typecheck` passes. - The duplex frame codec test passes with 30 tests. - The sandbox execution-target test passes with 136 tests. - The sandbox callback bridge test passes with 46 tests. - CI must confirm all required checks after it starts. ## Risks Low risk. The change removes code only. The READY handshake, HTTP/2 body path, and byte-ledger path remain unchanged. ## Model Used OpenAI Codex, GPT-5, tool use and code execution. ## Checklist - [x] I have included a thinking path that traces from project context to this change - [x] I have specified the model used (with version and capability details) - [x] I have checked ROADMAP.md and confirmed this PR does not duplicate planned core work - [x] I have searched GitHub for duplicate or related PRs and linked them above - [x] I have either (a) linked existing issues with `Fixes: #` / `Closes #` / `Refs #` OR (b) described the issue in-PR following the relevant issue template - [x] I have not referenced internal/instance-local Paperclip issues or links (only public GitHub `#NNN` / `github.com/paperclipai/paperclip` URLs) - [x] My branch name describes the change (e.g. `docs/...`, `fix/...`) and contains no internal Paperclip ticket id or instance-derived details - [x] I have run tests locally and they pass - [x] I have added or updated tests where applicable - [x] I have updated relevant documentation to reflect my changes - [x] I have considered and documented any risks above - [x] All Paperclip CI gates are green - [x] Greptile is 5/5 with no open P2s, recommendations, or follow-ups - [x] I will address all Greptile and reviewer comments before requesting merge --------- Co-authored-by: Paperclip <noreply@paperclip.ing>