🧪 Add edge case tests and fixes for FindExe

[Ven0m0]

🎯 What: Handled edge cases (empty strings, trailing slashes, quotes, whitespace) in FindExe and added corresponding test scenarios.
📊 Coverage: Covered missing PATH parsing issues (trimming quotes/spaces, deduplicating slashes) and empty inputs.
✨ Result: Improved test coverage and reliability for FindExe execution across differing environment setups.

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PR created automatically by Jules for task 7683766312552797405 started by @Ven0m0

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