Tag Capitalization

1. Tags will be shown to the user as the canonical lexical value.
2. The lexical name that is stored in the note will not be shown.

This means that if you create tag A it will display in the tag list and notes as A.
If you then add the tag a to another note it will show as A after adding it.
If you rename the tag from A to a in the tag list, the tag will then show as a on all notes.

No files or tests are named. Start by locating the tag list and note tag display entry points, then trace tag creation, addition, and renaming. Done means tags display their canonical lexical value consistently, while renaming updates the displayed value across notes.

Written by the indexing model from the issue text.