History

Nicky Leach 2862e18484 refactor(adapter-utils): remove the retired duplex_v1 sandbox bridge transport (#12171 ) ## Thinking Path > - Paperclip is the open source app people use to manage AI agents for work > - The adapter utilities provide sandbox transport paths for agent execution > - The retired `duplex_v1` path remains in host, gateway, and test code after `http2_v1` replaced it > - Retired transport code adds maintenance cost and leaves an unsafe fallback for unknown gateway modes > - This pull request removes the retired path, moves shared `http2_v1` contracts to a leaf module, and closes mode dispatch to a fixed allowlist > - The benefit is a smaller transport surface and explicit failure for unsupported modes ## Linked Issues or Issue Description Refs #12120 The `http2_v1` transport replaced `duplex_v1`, but the retired broker, gateway, constants, and tests remain in the adapter utilities. An unknown bridge mode can also fall through to the queue gateway when a queue directory exists. This change removes the retired code and rejects unsupported modes before gateway selection. ## What Changed - Delete the host `duplex_v1` broker and its transport-only tests. - Delete the in-sandbox duplex gateway and retired mode constants. - Move shared `http2_v1` symbols into `bridge-transport-contract.ts`. - Update the remaining importers and repair their focused tests. - Validate bridge modes against `http2_v1` and `queue_v1` before queue lookup. - Keep `queue_v1`, `duplex-frame-codec.ts`, and duplex telemetry dimensions unchanged. ## Verification - [x] `npx tsc --noEmit -p packages/adapter-utils` passes. - [x] `npx vitest run packages/adapter-utils/src` passes: 48 files and 968 tests pass, with 4 pre-existing platform skips. - [x] Full CI is green on this pull request. - [x] Greptile review is complete and every finding is resolved. ## Risks The change removes an internal transport that no host path selects. The main risk is an overlooked import or test dependency. Targeted typecheck and tests cover the adapter utility package. Full CI must confirm workspace-wide compatibility. ## Model Used Anthropic Claude Sonnet 5 assisted with the implementation, as recorded in the commit. The commit does not record a context-window size or reasoning mode. ## 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>		2026-08-25 08:47:43 -07:00
..
src	refactor(adapter-utils): remove the retired duplex_v1 sandbox bridge transport (#12171 )	2026-08-25 08:47:43 -07:00
CHANGELOG.md	fix: bound workspace Git scans (#11572 )	2026-08-17 22:11:30 -05:00
README.md	PAPA-430: workspace finalize gates + no-remote-git enforcement (#6969 )	2026-05-29 08:25:29 -07:00
package.json	fix(build): enforce Node 24 across Paperclip (#11792 )	2026-08-21 10:17:52 -07:00
tsconfig.json	Fix root TypeScript solution config	2026-03-09 14:09:30 -05:00

README.md

@paperclipai/adapter-utils

Shared utilities for Paperclip adapters: process spawning, environment injection, sandbox/SSH transport, workspace sync, and the round-trip helpers that move code between the local execution-workspace cwd and wherever the agent actually runs.

For the adapter-author guide see docs/adapters/creating-an-adapter.md and the in-repo notes at packages/adapters/AUTHORING.md.

No-remote-git contract

The local execution-workspace cwd is the only persistence boundary across runs. No adapter may depend on a git remote for cross-run state.

Adapters that run the agent on a different host should use the SSH round-trip helpers in src/ssh.ts:

prepareWorkspaceForSshExecution({ spec, localDir, remoteDir }) — bundles the local cwd (tracked files, dirty edits, untracked additions, and the git history needed to reconstruct it) to remoteDir before the run starts. Runs with no git remote configured.
restoreWorkspaceFromSshExecution({ spec, localDir, remoteDir, ... }) — syncs the remote cwd back into localDir after the run, including any new commits the agent created. Also runs with no git remote configured.

prepareRemoteManagedRuntime in src/remote-managed-runtime.ts wraps both calls for adapters that want a per-run remote workspace and an automatic restoreWorkspace() finally hook.

The invariant is pinned by the no-remote-git contract case in src/ssh-fixture.test.ts, which asserts that a remote-only commit propagates to the local worktree through the prepare → restore round-trip with no git remote configured at any point. Do not regress that test.