AR-236: add square utility

[kjgbot]

Summary

• Add a pure square(n) utility to factory-sdk
• Add Vitest coverage for positive, negative, and zero inputs

Validation

• npx vitest run packages/factory-sdk/src/square.test.ts

[coderabbitai]

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ℹ️ Review info

⚙️ Run configuration

Configuration used: Organization UI

Review profile: CHILL

Plan: Pro Plus

Run ID: 94023082-44bf-4c74-a253-4cf5a6640c5a

📥 Commits

Reviewing files that changed from the base of the PR and between de24cb3 and c414daa.

📒 Files selected for processing (2)

• packages/factory-sdk/src/square.test.ts
• packages/factory-sdk/src/square.ts

✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch ar-236-square-util

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[gemini-code-assist]

Code Review

This pull request introduces a new square utility function and its corresponding unit tests. The feedback points out that the new utility is not exported from the SDK's main entry point (index.ts), which prevents external consumers from using it, and suggests adding the appropriate export statement.

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[gemini-code-assist]

The square utility is defined here but is not exported from the SDK's main entry point (packages/factory-sdk/src/index.ts). To make this utility available to external consumers of the SDK, please add the export statement to index.ts:

export { square } from './square'

[kjgbot]

Closing per factory close-never-merge policy: synthetic [factory-e2e] probe PR (issue is synthetic; probe PRs are close-never-merge by policy, never merged). Manual enforcement — the daemon's auto-close no-op'd because the PR title lacks the [factory-e2e] marker (close-probe bug, fix in flight).