## Thinking Path > - Paperclip manages agents and their work. > - Native Runner must bind each provider turn to the selected task, account, model, and instructions. > - Antigravity needs native ACP admission and physical process ownership across continuation. > - A saved conversation must not reuse an old process owner or silently switch its effective model. > - This pull request adds the native candidate behind exact operator admission. > - The default release gate remains closed while qualification is pending. ## Linked Issues or Issue Description Builds on merged #18187. Product account setup and the candidate producer are in dependent #18189. The repeatable browser journey is in #18190. Refs: #12503, #14938; those proposals use legacy CLI adapters. **Agent or provider** Google Antigravity ACP 1.4.3. **Why this adapter is useful** Users need to set up an Antigravity agent and run real work through their managed Google subscription. **How the agent is invoked** Native Paperclip Runner uses the pinned Antigravity ACP runtime. Exact operator admission is required while qualification remains pending. ## What Changed - Add native Antigravity ACP model and instruction admission, selected-account homes, and fenced refresh ownership. - Carry exact candidate authority from the control plane through Runner, Rust, the sidecar, and each current run. Clamp daemon lifetime to the absolute permission expiry, including replacement owners. - Preserve a rotated OAuth refresh token before later identity verification can fail, including failed or cancelled startup admission. Make private lease-close retries safe. - Bound native probe retirement and retry the exact original owner; do not delete credential homes before physical proof. - Preserve Gemini API-key recovery when shared Google subscription capability is added. - Resume the same tagged native conversation with fresh per-turn process ownership and physical native retirement. - Include native manifests in isolated Rust image stages, release cache keys, and dev rebuild detection. The workflow changes only extend existing cache input lists. - Keep current master provider behavior and append Grok 13, Pi 35, and Copilot 84 input identities. Preserve prior identities, including saved Copilot 82 and 83 runs. ## Verification - Runner TypeScript main checks, profile generators, Rust formatting, and offline workspace checks pass. The native backend integration target passes 28 tests. - The complete transport and cleanup group passes 387 tests without unhandled rejections. These checks use local scripted children and actual process and port ownership. - Saved-profile decoding, native-execution parsing, installation, and selected-credential controls pass 208 focused tests. All 109 pre-existing profile identity files remain byte-for-byte unchanged. Copilot, Grok, and shared TypeScript/Rust generation checks pass. - The final recovery fixture passes all seven cases. After the master rebase, the combined recovery and owned-Node-runtime group passes all 10 cases. Each expiry case sets one 45-second absolute grant before startup. It includes the deliberate six-second cold delay, four existing eight-second command budgets, and active-turn headroom. The test proves an active turn before expiry and then checks the daemon, owned process group, child processes, and all three native port fences. The 60-second test deadline does not renew provider authority. - The consolidated model-discovery and pending-release group passes 22 tests. Google credential compatibility and auth recovery pass 25 tests, including existing Gemini API-key recovery. The full product settings test group remains intact in #18189. - Earlier failures remain in their original CI runs and local records. They exposed the Copilot 82 decoder gap, an expired five-second fixture bootstrap ticket, and a fixture grant consumed before activation on loaded CI. Each repair has a separate result. Production ticket limits and admission behavior are unchanged by the final test commits. - An unrelated decision-expiry check failed in [the earlier CI run](https://github.com/paperclipai/paperclip/actions/runs/40941986698/job/123688668997). Its owning code is unchanged from the base. The unchanged suite passes 20 tests on isolated PostgreSQL. A controlled database rollback reproduces the earlier wake: clean startup schedules the 120-second decision expiry, while rollback reconciliation leaves a 30-second continuation-coalescing wake. The decision stays open, with no wake delivery or error. The fresh final-head server shard passes; the failed result is preserved. - Final native commit `ec6bc7e4d77f5ae0cc4946dbba6c662e95a87f5b` passed `ci / verify` and `ci / e2e`. Fresh Greptile and Paperclip reviews both score 5/5, with no open findings. Antigravity retains the recorded native `.5` closure and exact low-model profile. This PR does not claim global or cross-platform qualification. ## Risks - The new transport carries private managed credentials. Exact ownership, account generation, model, instructions, and native retirement are fail-closed. - Only local macOS ARM64 has a verified complete Antigravity runtime. Default Antigravity task execution remains disabled without current trusted operator admission. The Google server sign-in lane and production candidate producer ship in #18189; this native slice does not expose the subscription catalog choice. - Shared launch inputs change provider identities. New identities are append-only; existing recorded identities remain available. ## Model Used OpenAI Codex (GPT-6). The host did not expose the exact model revision or context limit. The model used tools for code edits, tests, and review. ## 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>
@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.
Sandbox bridge deadlines
Command-managed bridge control operations (queue reads, input delivery, setup, and cleanup) have a host-enforced deadline of at most 30 seconds per shell command. A shorter configured timeout still applies. These operations cannot inherit the agent run's hours-long lifetime or wait forever on a provider that ignores its timeout. Long-lived agent session commands keep their own limits.
A control timeout reports a transport failure. It does not prove that the remote command stopped and does not replay an uncertain write. The process session closes failed input delivery and uses its existing shutdown path; normal execution settlement must still verify termination.
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) toremoteDirbefore the run starts. Runs with nogit remoteconfigured.restoreWorkspaceFromSshExecution({ spec, localDir, remoteDir, ... })— syncs the remote cwd back intolocalDirafter the run, including any new commits the agent created. Also runs with nogit remoteconfigured.
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.