feat: add live cross-machine Relayfile proof - #451
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📝 WalkthroughWalkthroughThis change adds a runnable live-workspace example. It provisions or reuses an Agent Relay node, writes a proof artifact through a Relayfile mount, verifies its bytes and SHA-256 locally, adds tests, and documents setup, launch, and cleanup. ChangesLive workspace proof
Estimated code review effort: 4 (Complex) | ~45 minutes Merge Risk: 🟡 Moderate · up to The new live proof can leave cloud agents or sandboxes running after interruption or verification failure, and its documented setup and runtime requirements can prevent users from completing the flow or cause execution failures. The read timeout also may not stop a stalled verification, so the PR is not merge-ready until these bounded issues are addressed or explicitly accepted. Sequence Diagram(s)sequenceDiagram
participant Laptop as Laptop proof CLI
participant Relay as Agent Relay fleet
participant Daytona as Daytona sandbox
participant Mount as Relayfile mount
Laptop->>Relay: Run preflight and spawn agent
Relay->>Daytona: Provision or reuse node
Daytona->>Mount: Write proof JSON and SHA-256 sidecar
Laptop->>Mount: Poll with relayfile read
Mount-->>Laptop: Return artifact and sidecar
Laptop->>Laptop: Verify nonce, metadata, bytes, and digest
Poem
🚥 Pre-merge checks | ✅ 4 | ❌ 1❌ Failed checks (1 warning)
✅ Passed checks (4 passed)
Full details: Docstring CoverageExplanation Docstring coverage is 0.00% which is insufficient. The required threshold is 80.00%. Docstring coverage is scoped to functions touched by this diff. Analyzed 18 functions across 2 files. (6 skipped: 6 unsupported.) ✨ Finishing Touches 💡 1📝 Generate docstrings 💡
🧪 Generate unit tests (beta)
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Relayfile Eval ReviewRun: Passed: 4 | Needs human: 0 | Reviewable: 0 | Missing output: 0 | Failed: 0 | Skipped: 0 Human Review CasesNo reviewable human-review cases captured Relayfile output. |
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Reviewed commit: 89ba2367fd
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Inline comments:
In `@docs/guides/live-workspace.md`:
- Line 11: Update the command sequence in the live workspace guide to run npm
run setup before npm run preflight, preserving the existing preflight step and
fresh-checkout workflow.
In `@examples/live-workspace/package.json`:
- Line 19: Update the Node.js engine requirement in the package configuration
from >=18 to >=22 so it matches the minimum runtime required by
agent-relay@11.8.7.
In `@examples/live-workspace/proof.mjs`:
- Around line 202-205: Update the parallel read flow around Promise.all and
readRemote so each read receives the remaining proof deadline and enforces it by
terminating its child process when expired; ensure blocked relayfile reads
reject or otherwise settle so the proof loop can fail on timeout.
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README.mddocs/guides/live-workspace.mdexamples/README.mdexamples/live-workspace/LAUNCH_PLAYBOOK.mdexamples/live-workspace/README.mdexamples/live-workspace/package.jsonexamples/live-workspace/proof.mjsexamples/live-workspace/proof.test.mjs
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1 participant
What users get
A self-contained, fail-closed proof that a cloud agent can write an uncommitted file through a real Relayfile mount and the exact bytes become readable on the laptop without Git, curl, host paths, or a localhost simulation.
Public path:
cd examples/live-workspace npm install npm run setup npm run proofThe example pins Agent Relay 11.8.7 and Relayfile 0.10.51, preflights the shared Cloud session/workspace, prints an attach command, and verifies a run nonce plus SHA-256 generated independently in the sandbox.
Human launch material
Verification
Known launch limit
Agent Relay 11.8.7 can release the proof agent but does not yet expose successful Cloud sandbox deletion from the fleet CLI. The docs therefore say controlled beta, reuse one node for repeat takes, and delete via Cloud fleet controls. No cleanup capability is implied.