Simplified also the monitored_rivers.geojson reducing size by 2.

Replaced the districts.geojson with a simplified version since this was causing the reruns and the glitches.

Added cache diagnostics to the sidebar and updated GeoJSON file paths in data manager; reduced API request timeout to improve performance.

Added caching to the data manager for large goejsons (divisions, monitored rivers, districts) which are static and where being loaded on every rerun (every button click). It seems this is what was causing the performance issues and glitches.

No more glitching maps: Stable keys prevent unnecessary DOM re-renders

Added flood tab with live alerts. Updated landlsides tab to show divisions and unosat layer of landslides.

Restructure: move app to repo root (no PDFs)