- Header: avatar opens an account popover (hover + click) with identity, admin
badge and Sign out; removes the standalone logout icon.
- Sidebar: relative upload-date chips (24h/1w/1m/6m/1y) backed by max_age_days,
with a Custom toggle revealing the from/to range; mutually exclusive.
- Sidebar: 'Filters · N active · Clear all' moved to the top; drop bottom button.