Dashboard Tools & Operations section replaced with a compact link card.
All 10 tool cards moved to a dedicated Tools page in the sidebar, grouped
into three sections: Database & Scanning, Metadata & Cache, Management.
Library Maintenance promoted to hero position at the top of the page with
accent top bar, logo, enable toggle, and tabbed content (Jobs, Findings,
History) — no longer buried in a modal. openRepairModal() now navigates
to the Tools page. Repair modal HTML removed.
Tool initialization extracted from loadDashboardData() into a dedicated
initializeToolsPage() with idempotent event listener wiring. Container
sizing updated to use margin: 20px (matching Dashboard/Stats) instead of
max-width: 1400px for consistent full-width appearance across all pages.