chore: add MIT license, ignore node_modules, fix runner scripts

[c0d3ster]

Summary

• Add node_modules/ to .gitignore
• Rewrite package.json description to better convey what nightlight does
• Fix plan/overnight npm scripts to invoke via bash explicitly (cross-platform/Windows friendly)
• Add MIT LICENSE

Test plan

• N/A — metadata/config only, no runtime behavior to exercise beyond npm run plan / npm run overnight invoking correctly

🤖 Generated with Claude Code

Summary by CodeRabbit

• Documentation

  • Added an MIT License with usage, distribution, and warranty terms.
  • Updated the package description to clarify unattended session and permission-control capabilities.

• Chores

  • Improved repository exclusions for installed dependencies.
  • Updated command scripts for more consistent execution.

[coderabbitai]

Important

Review skipped

Review was skipped as selected files did not have any reviewable changes.

💤 Files selected but had no reviewable changes (1)

• .claude/skills/plan-tasks.md

⛔ Files ignored due to path filters (1)

• pnpm-lock.yaml is excluded by !**/pnpm-lock.yaml

⚙️ Run configuration

Configuration used: defaults

Review profile: CHILL

Plan: Pro Plus

Run ID: 610688e0-a359-46cc-ae6b-f2bb17657019

📥 Commits

Reviewing files that changed from the base of the PR and between 9b2d42d and 12c275f.

⛔ Files ignored due to path filters (1)

• pnpm-lock.yaml is excluded by !**/pnpm-lock.yaml

📒 Files selected for processing (1)

• .claude/skills/plan-tasks.md

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📝 Walkthrough

Walkthrough

The project adds an MIT license, ignores .env and node_modules/, and updates the package description and plan/overnight scripts to use bash.

Changes

Project updates

Layer / File(s)	Summary
Project configuration and package commands .gitignore, LICENSE, package.json	.gitignore excludes .env and node_modules/. LICENSE adds the MIT License. package.json updates the description and invokes the plan and overnight scripts through bash.

Estimated code review effort: 2 (Simple) | ~5 minutes

🚥 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 clearly summarizes the main changes: adding the MIT license, ignoring node_modules, and fixing the runner scripts.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.

✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch chore/update-metadata-and-license

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