docs(contributing): add npm link step to developer setup

[dknos]

Summary

• Adds missing npm link step to the developer setup section in CONTRIBUTING.md
• Required for the nemoclaw CLI to work locally during development

Test plan

• Follow the updated setup instructions from scratch
• Verify nemoclaw command is available after setup

Fixes #1429

🤖 Generated with Claude Code

Summary by CodeRabbit

• Documentation
  • Added a Local Development Testing section to contribution guidelines with step-by-step instructions to build, locally link and verify the CLI, plus how to unlink the local CLI after testing.

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• CONTRIBUTING.md

✅ Files skipped from review due to trivial changes (1)

• CONTRIBUTING.md

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📝 Walkthrough

Walkthrough

A "Local Development Testing" section was added to CONTRIBUTING.md with instructions to run npm link from the repository root (noting cd .. when starting inside nemoclaw/), verify with nemoclaw --version, and unlink with npm unlink -g nemoclaw. Documentation-only change.

Changes

Cohort / File(s)	Summary
Documentation CONTRIBUTING.md	Added a "Local Development Testing" section instructing developers to run npm link after building, verify the linked CLI with nemoclaw --version, include the cd .. note when appropriate, and provide the npm unlink -g nemoclaw cleanup command.

Estimated code review effort

🎯 1 (Trivial) | ⏱️ ~2 minutes

Poem

🐰 I hopped through docs with nimble feet,

Added a link to make testing neat.
npm link whispers, "Try me, friend!"
Verify the version, then unlink in the end.
A tiny bounce for developer cheer 🥕

🚥 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 directly and clearly describes the main change: adding the npm link step to the developer setup documentation.
Linked Issues check	✅ Passed	The PR successfully implements all coding requirements from issue #1429: adds the Local Development Testing section with npm link, verification command, and unlink instructions.
Out of Scope Changes check	✅ Passed	All changes are directly related to resolving issue #1429; only CONTRIBUTING.md was modified with the requested npm link documentation addition.
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

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Actionable comments posted: 1

🤖 Prompt for all review comments with AI agents

Verify each finding against the current code and only fix it if needed.

Inline comments:
In `@CONTRIBUTING.md`:
- Around line 56-61: The docs risk instructing users to run npm link from the
wrong directory (e.g., still in ./nemoclaw) which can link the plugin instead of
the root CLI; update the CONTRIBUTING.md step before the npm link command to
make the working directory explicit by telling users to return to the repo root
(or run the appropriate cd) so npm link targets the CLI package, then run npm
link and verify with the nemoclaw --version check.

🪄 Autofix (Beta)

Fix all unresolved CodeRabbit comments on this PR:

• Push a commit to this branch (recommended)
• Create a new PR with the fixes

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Reviewing files that changed from the base of the PR and between c99e3e8 and f38642e.

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• CONTRIBUTING.md

[dknos]

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[dknos]

Addressed: the working directory before npm link is now explicit. After the plugin build step leaves the user in nemoclaw/, a cd .. returns them to the repo root before running npm link, ensuring the CLI package (not the plugin) is linked. See commits 785f2b4 and 95d00e2.

[dknos]

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