Per feedback: New/Open/Rename/Save-copy/Reset made no sense under the settings
database — moved the meaningful DB actions to the logbook (New database / Open
existing / Rename-relocate). The settings section now shows just its path + Open
folder. Also fixed the "Logbook switched…" confirmation rendering twice (dropped
the duplicate render in the SQLite block; kept the shared one). The unused
settings-db handlers/bindings stay for a later re-add.