feat: add py.typed marker for type checking

[jxnl]

Summary

Adds PEP 561 compliant py.typed marker file to the instructor package. This enables type checkers like mypy to recognize instructor as a typed package and prevents import-untyped errors.

Changes

• Added empty instructor/py.typed marker file per PEP 561 specification

Test Plan

• Verify file is created in correct location
• Verify no other changes needed (hatchling includes py.typed automatically)

Fixes #1798

Generated with Claude Code

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Important

Adds py.typed marker file to instructor package for type checking support.

• Behavior:
  • Adds py.typed marker file to instructor package, enabling type checkers to recognize it as a typed package.
• Misc:
  • No additional changes needed as hatchling includes py.typed automatically.

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Status	Name	Latest Commit	Updated (UTC)
❌ Deployment failed View logs	instructor	553bffc	Oct 27 2025, 07:21 PM

[ellipsis-dev]

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1. instructor/py.typed:1

• Draft comment:
  The empty py.typed marker is correctly added to the package root per PEP 561 requirements. This change successfully resolves issue #1798.
• Reason this comment was not posted:
  Confidence changes required: 0% <= threshold 85% None

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