🧪 Add tests for position_to_range in conversion module

[bashandbone]

🎯 What: The testing gap for the position_to_range function in crates/services/src/conversion.rs was addressed.
📊 Coverage: A unit test test_position_to_range was added to verify the happy path logic of converting start and end Position structs to a Range.
✨ Result: Test coverage for conversion.rs has been improved, and regressions on this straightforward conversion function can be caught.

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PR created automatically by Jules for task 2041455240675452280 started by @bashandbone

Summary by Sourcery

Tests:

• Add a unit test to verify that position_to_range correctly constructs a range from start and end positions.