paperclip/packages/adapters/opencode-local/src/server
Devin Foley f6bad8f6bf
Sanitize remote execution envs at the boundary (#5325)
## Thinking Path

> - Paperclip orchestrates AI agents for zero-human companies
> - Adapters spawn CLIs against local, SSH, and sandbox targets,
threading a runtime env through `runAdapterExecutionTargetProcess` and
the SSH/sandbox runners
> - Host identity vars (HOME, TMPDIR, XDG_*, NVM_DIR, PATH) routinely
leak into the env we send to remote targets — sometimes via test probes,
sometimes via runtime config — and break sandboxed/SSH'd CLIs whose own
profiles set those values correctly
> - The sanitization logic existed but lived alongside other helpers in
`server-utils.ts` and was applied piecemeal at adapter callsites, so it
was easy to bypass
> - This pull request lifts the sanitization into a standalone
`remote-execution-env.ts`, applies it at the SSH and sandbox runtime
boundary so every remote spawn goes through it, and removes the
duplicated callsite-level filtering
> - The benefit is identity-bound host env stops leaking across
SSH/sandbox transports regardless of which adapter calls in

## What Changed

- `packages/adapter-utils/src/remote-execution-env.ts`: new module —
single source of truth for which env keys are identity-bound and how to
strip them when the value matches the host's value
- `packages/adapter-utils/src/server-utils.ts`: remove the inline
sanitization (now in `remote-execution-env.ts`)
- `packages/adapter-utils/src/execution-target.ts`: apply sanitization
at the sandbox runtime boundary
- `packages/adapter-utils/src/ssh.ts`: apply sanitization at the SSH
spawn boundary
- `packages/adapters/opencode-local/src/server/test.ts`: drop
now-redundant callsite filtering
- `packages/adapters/pi-local/src/server/test.ts`: drop now-redundant
callsite filtering
- New tests `execution-target.test.ts` and
`execution-target-sandbox.test.ts` cover the sanitizer flow at both
transports, including positive cases (host-shaped path stripped) and
explicit-override preservation

## Verification

- `pnpm vitest run --no-coverage --project @paperclipai/adapter-utils
--project @paperclipai/adapter-opencode-local --project
@paperclipai/adapter-pi-local`
- `pnpm typecheck` clean

## Risks

Low–medium. The sanitization is now applied at one layer (boundary)
instead of N (callsites), so behavior is more consistent. Any adapter
that previously relied on a leaked host var landing on the remote shell
would now see it stripped — but those reliances were what this change
exists to fix.

## Model Used

Claude Opus 4.7 (1M context)

## 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 run tests locally and they pass
- [x] I have added or updated tests where applicable — new tests at both
transports
- [x] If this change affects the UI, I have included before/after
screenshots — N/A (no UI)
- [x] I have updated relevant documentation to reflect my changes
- [x] I have considered and documented any risks above
- [x] I will address all Greptile and reviewer comments before
requesting merge
2026-05-05 19:30:14 -07:00
..
execute.remote.test.ts Validate remote model probes on execution target (OpenCode) (#5119) 2026-05-03 13:34:09 -07:00
execute.ts Wire per-adapter sandbox install commands through test and execute paths (#5280) 2026-05-05 08:29:28 -07:00
index.ts Switch OpenCode to explicit static/local-aware model selection (#5117) 2026-05-03 13:01:34 -07:00
models.test.ts Switch OpenCode to explicit static/local-aware model selection (#5117) 2026-05-03 13:01:34 -07:00
models.ts Validate remote model probes on execution target (OpenCode) (#5119) 2026-05-03 13:34:09 -07:00
parse.test.ts Add SSH environment support (#4358) 2026-04-23 19:15:22 -07:00
parse.ts Add SSH environment support (#4358) 2026-04-23 19:15:22 -07:00
runtime-config.test.ts Fix headless OpenCode permission prompts 2026-03-26 11:12:35 -05:00
runtime-config.ts Stop leaking host process.env into the remote OpenCode SSH probe (#5274) 2026-05-05 08:00:19 -07:00
skills.ts Add unmanaged skill provenance to agent skills 2026-03-18 14:21:50 -05:00
test.ts Sanitize remote execution envs at the boundary (#5325) 2026-05-05 19:30:14 -07:00