docs: fix misleading OpenClaw note and remove unsupported deploy command

[ericksoa]

Closes #322, closes #323.

Summary

• Replace "requires a fresh installation of OpenClaw" with "creates a fresh OpenClaw instance inside the sandbox during onboarding" — the old note implied a manual step that doesn't exist
• Remove nemoclaw deploy from Key Commands table — remote deployment is not in the current supported scope

Summary by CodeRabbit

• Documentation
  • Updated onboarding messaging to clarify that NemoClaw creates a new OpenClaw instance inside the sandbox during setup, rather than requiring a fresh installation.
  • Removed the experimental host command entry from documentation.

[coderabbitai]

No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: Path: .coderabbit.yaml

Review profile: CHILL

Plan: Pro

Run ID: c167b6f9-32e0-469e-81cb-8c5ff62c5200

📥 Commits

Reviewing files that changed from the base of the PR and between 88a7c40 and ce29603.

📒 Files selected for processing (1)

• README.md

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📝 Walkthrough

Walkthrough

README.md updated to clarify that NemoClaw automatically creates a fresh OpenClaw instance during onboarding, and removed the unsupported nemoclaw deploy command from the Key Commands table.

Changes

Cohort / File(s)	Summary
Documentation Update README.md	Clarified onboarding messaging to indicate NemoClaw manages OpenClaw instance creation internally, and removed the experimental nemoclaw deploy <instance> command from the Key Commands table.

Estimated code review effort

🎯 1 (Trivial) | ⏱️ ~2 minutes

Poem

🐰 A rabbit hops through the README's page,
Clearing confusion from the onboarding stage!
"NemoClaw creates what you need," now it's clear,
And commands that don't work? Gone from here! 🌟

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The title accurately describes the main changes: fixing misleading OpenClaw documentation and removing the unsupported deploy command from the README.
Linked Issues check	✅ Passed	The pull request fully addresses both linked issues: it rewrites the OpenClaw note to clarify that NemoClaw creates a fresh instance during onboarding (#322) and removes the unsupported deploy command from the Key Commands table (#323).
Out of Scope Changes check	✅ Passed	All changes are directly related to the stated objectives in the linked issues; no out-of-scope modifications are present in this documentation-only pull request.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.

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✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch fix/issue-322-323-readme-cleanup

📝 Coding Plan

• Generate coding plan for human review comments

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