fix: Callable Matching Issue

[AttAditya]

LangEx 0.4.5

Release Summary

• Update Type: Minor
• Update Version: 0.4.5
• Breaking Changes: No
• Backwards Compatibility: NA
• Target Issue: None

Changelog

• Updated handle_callable to use result.evaluate for proper result evaluation.
  • Ensures callable argument checking is correctly reflected in match results.
  • Simplifies return logic and aligns with other handlers.
  • Reduces potential bugs in nested match scenarios.
• Added comprehensive validation tests for argument and return types.
  • Validates int, str, float, bool, and callable types.
  • Confirms that mismatched types raise ValidationError.
  • Includes positive and negative test cases for return type validations.
• Introduced new test module tests/functions/test_validations.py.
  • Organizes validation tests separately.
  • Uses testing decorators @discover_test and @expects for clarity.

Updated Library Highlights

No significant API changes; focus was on internal logic and test coverage.

Future Plans

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• None

Notes

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[AttAditya]

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