MetroList: Remove Parentheses and Brackets from Song Title for Lyrics Search

Problem

Lyrics searches often failed because song titles included parentheses and brackets (featuring artist names, live versions, etc.) that providers couldn't match.

Solution

Added preprocessing step to remove parentheses and brackets from song titles before sending to lyrics providers. Search now uses cleaned title while preserving display of original.

Result

Higher lyrics search success rate. Fewer failed searches due to title formatting variations.

Commit: MetrolistGroup/Metrolist@2d4b922