Fix interactive prompt in exportMigrations by parsing author string

[pyramation]

Summary

When exportMigrations is called programmatically (e.g., from tests in constructive-db), it was prompting for interactive input:

Enter author full name (--fullName) [Dan Lynch]
>

This happened because preparePackage calls initModule with an author string (e.g., 'Constructive <developers@constructive.io>'), but the module template expects separate fullName and email fields in the answers.

This PR:

1. Adds a parseAuthorString helper that extracts fullName and email from the author string
2. Passes these fields to the answers object when calling initModule
3. Sets noTty: true to disable interactive prompts for programmatic use

Review & Testing Checklist for Human

• Verify the regex handles edge cases: Test with author strings like "John Doe" (no email), "Name <email>", and "Name With Spaces <email@domain.com>"
• Check if noTty: true has unintended side effects: Ensure this doesn't suppress prompts that should still appear in CLI usage
• Verify CI passes: I couldn't build locally due to workspace dependency issues

Recommended test plan:

1. Run the introspection export test in constructive-db after this is merged and the dependency is updated
2. Manually test pgpm export from CLI to ensure interactive prompts still work when needed

Notes

This fix is needed to unblock the introspection package tests in constructive-db PR #159.

Link to Devin run: https://app.devin.ai/sessions/cf99eca9a417440f98c23cd9db41555b
Requested by: Dan Lynch (@pyramation)

---

Note

Ensures programmatic exports don't trigger interactive prompts during module scaffolding.

• Adds parseAuthorString(author) to extract fullName and optional email from strings like "Name <email@domain>"
• Updates preparePackage to pass fullName/email in initModule answers and sets noTty: true
• Minor cleanup: preserve existing overwrite logic; no behavior changes elsewhere

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