[dgruss]

Adds a pin beside the search dialog's lock. It opens Save current filters and the named sets available to restore. Saving asks for a name; replacing an existing set requires confirmation. Saved sets use the exact category/query rows and are reevaluated against the current library, playlist and lockdown context. Longer saved-set lists are paged.

Storage follows the configured playlists folder as filter-presets.json. An existing file in the game user directory is moved there when the destination is absent. The pin button can be positioned/styled by SongJumptoButtonPin; it otherwise follows the lock button. In-game help explains the control. The name prompt reuses the existing popup with a Name label and no password field.

Stacked on #232. Replaces the separate preset-menu approach from closed #226.

Validation: Windows build, English fallback and whitespace checks pass. The initial isolated-game build saved a Unicode set name and restored its exact filters through the actual popup callback. The subsequent playlists-storage change compiles, but its migration and final labeled dialogs still need runtime verification. Native persistence regression source is included.

Refs #205.

[dgruss]

The pin is beside the lock in the search dialog. It opens the saved filter sets and the action to save the current set with a name.