On-demand maintenance actions

• Organize now — runs each arr's own Organize across the whole library, the only thing that renames media folders to your current naming format. Fixes stragglers like a film that finally got a release year but still sits in a Title () folder. The arr moves only what doesn't already match.
• Rename dashed folders — repairs folders where a colon in the title became a dash, across your Source, Helm_Created and Uploads trees. Preview first; nothing changes on disk until you Apply, folders that already match are left alone, and it never merges into an existing folder.
• Plex maintenance — Plex's own housekeeping, triggered from here. None of it clears orphaned labels from Plex's filter list; that's a Plex tag-table artifact no maintenance action touches.