Warnings are now stored and served as structured data (title, detail,
slave/master items, total) and rendered as cards with a Slave -> Master
table: the first five rows, with "Show all" for the rest.
- Renamed folders highlight the characters that differ; non-ASCII
characters get their code point in a tooltip, so look-alikes such as
"-" (U+002D) and "‐" (U+2010) can be told apart.
- Songs in a different folder are grouped by folder pair with a song
count, most affected first, instead of two long examples.
- Folders that only differ by name are no longer also reported as
songs in a different folder.
- Warnings saved as plain text by earlier scans still display.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
