feat: Add deploy_source to CLI deploy requests (EX-2032)

[amun-sihra]

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Summary

Explicitly sends deploy_source: 'cli' in the create deploy request body so that bitballoon can distinguish CLI deploys from other API consumers. This enables the UI to show "Last deployed from CLI" instead of grouping CLI deploys under "Drop".

Fixes: https://linear.app/netlify/issue/EX-2032/last-deployed-from-ardrop-label-followup

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ℹ️ Recent review info

⚙️ Run configuration

Configuration used: Organization UI

Review profile: CHILL

Plan: Pro

Run ID: c5eb81a6-f3b4-47f1-9dbc-634fded4e39d

📥 Commits

Reviewing files that changed from the base of the PR and between 89249d0 and 03df912.

📒 Files selected for processing (2)

• src/commands/deploy/deploy.ts
• tests/integration/commands/deploy/deploy.test.ts

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📝 Walkthrough

Summary by CodeRabbit

• Improvements
  • Deployment requests now include source identification metadata to help track deployment origins.

Walkthrough

The deploy command's api.createSiteDeploy request body now includes an additional field deploy_source: 'cli' in two code paths where a new deploy is created. A corresponding integration test was added to verify that this field is included in the POST request to create a deploy.

Estimated code review effort

🎯 2 (Simple) | ⏱️ ~10 minutes

🚥 Pre-merge checks | ✅ 3

✅ Passed checks (3 passed)

Check name	Status	Explanation
Title check	✅ Passed	The title clearly summarizes the main change: adding deploy_source field to CLI deploy requests, and is specific and concise.
Description check	✅ Passed	The description provides relevant context about why the change is needed and references the related issue, directly relating to the changeset.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.

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• Commit unit tests in branch EX-2032-cli

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📊 Benchmark results

Comparing with ca9d3ca

• Dependency count: 1,061 (no change)
• Package size: 355 MB (no change)
• Number of ts-expect-error directives: 356 (no change)