refactor(onboard): add sequence runner adapter

[cv]

Summary

Add a sequence-runner adapter that can migrate the existing rich onboarding phases onto the strict FSM runner. Each phase can return an updated context plus one or more FSM results, while runOnboardMachine() remains responsible for applying and validating transitions.

Changes

• Add runOnboardSequenceWithRunner() and buildOnboardSequenceHandlers().
• Add duplicate phase detection for state-to-handler adapter construction.
• Add sequence-runner tests covering rich context updates, multi-result provider-style phases, retry, branch, and terminal completion.

Type of Change

• Code change (feature, bug fix, or refactor)
• Code change with doc updates
• Doc only (prose changes, no code sample modifications)
• Doc only (includes code sample changes)

Verification

• npx prek run --all-files passes
• npm test passes
• Tests added or updated for new or changed behavior
• No secrets, API keys, or credentials committed
• Docs updated for user-facing behavior changes
• npm run docs builds without warnings (doc changes only)
• Doc pages follow the style guide (doc changes only)
• New doc pages include SPDX header and frontmatter (new pages only)

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Signed-off-by: Carlos Villela cvillela@nvidia.com

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[github-actions]

E2E Advisor Recommendation

Required E2E: None
Optional E2E: ubuntu-repo-cloud-openclaw, ubuntu-repo-cloud-openclaw-resume, ubuntu-repo-cloud-openclaw-repair

Dispatch hint: ubuntu-repo-cloud-openclaw,ubuntu-repo-cloud-openclaw-resume,ubuntu-repo-cloud-openclaw-repair

Workflow run

Full advisor summary

E2E Recommendation Advisor

Base: origin/stack/onboard-fsm-runner-multi-result
Head: HEAD
Confidence: high

Required E2E

• None. No merge-blocking E2E is required because the only runtime source change adds a new onboarding FSM adapter that is not currently imported by the CLI/user-flow implementation; the PR also adds focused unit coverage for the new helper. Existing user-facing onboarding, sandbox lifecycle, credentials, policy, and inference paths are not changed by this diff.

Optional E2E

• ubuntu-repo-cloud-openclaw (medium): Optional smoke confidence for the adjacent onboarding path: verifies the current Ubuntu cloud OpenClaw onboarding scenario still completes, even though this new adapter is not yet wired into the user-facing flow.
• ubuntu-repo-cloud-openclaw-resume (medium): Optional confidence for nearby FSM/session behavior because the new adapter handles retries and multi-result state progression, which is conceptually adjacent to onboarding resume behavior.
• ubuntu-repo-cloud-openclaw-repair (medium): Optional confidence for nearby onboarding recovery behavior because the adapter is part of the migration toward strict state-machine-owned transitions.

New E2E recommendations

• None.

Dispatch hint

• Workflow: E2E / Scenario Runner
• jobs input: ubuntu-repo-cloud-openclaw,ubuntu-repo-cloud-openclaw-resume,ubuntu-repo-cloud-openclaw-repair

[github-actions]

E2E Scenario Advisor Recommendation

Required scenario E2E: None
Optional scenario E2E: None

Workflow run

Full scenario advisor summary

E2E Scenario Advisor

Base: origin/stack/onboard-fsm-runner-multi-result
Head: HEAD
Confidence: high

Required scenario E2E

• None. No scenario workflow, scenario metadata, scenario runtime, or validation-suite files changed.

Optional scenario E2E

• None.

Relevant changed files

• None.

[github-actions]

PR Review Advisor

Findings: 0 needs attention, 0 worth checking, 0 nice ideas
Top item: No actionable code findings

Workflow run details

This is an automated advisory review. A human maintainer must make the final merge decision.