feat: add a Bhote Koshi flood event tool

docs/CURRENT-STATE.md

@@ -15,7 +15,7 @@ pass over a point, and those overhead now), public cameras (including a
 camera's current image), license plate reader cameras, radio stations, place search, routing, bike-share
 stations, transit vehicles, road traffic flow, weather, weather map images
 (radar, satellite, lightning), wind, the most recent satellite image of an
-area, submarine cables, datacenters and dams, regional briefs, tropical cyclones, fire
+area, submarine cables, datacenters and dams, the Bhote Koshi flood event pack, regional briefs, tropical cyclones, fire
 perimeters, terrain height, military installations and map features, plus a
 combined situation brief, military awareness around a point, the app's heads-up display caption, and a link that
 opens the app over an area. Tools reuse the layers' portable source factories, take a

docs/TOOLS.md

@@ -133,6 +133,7 @@ public feeds the sources already use.
 | `get_recent_imagery` | `imagery` | The most recent clear Landsat/Sentinel-2 image of an area (VIIRS fallback) |
 | `find_submarine_cables` | `cables` | TeleGeography cables and landing points by area or name (CC BY-NC-SA 3.0) |
 | `find_infrastructure` | `infrastructure` | OpenStreetMap datacenters or dams in an area, nearest first (ODbL) |
+| `get_bhote_koshi_flood` | `events` | The 2026 Bhote Koshi flood: evidence trail in story order, flood path and imagery dates (CC BY-NC 4.0) |
 | `get_regional_brief` | `regional` | What and where a location is, its weather and recent headlines |
 | `get_cyclones` | `cyclones` | Active NHC/CPHC tropical cyclones, optionally in an area |
 | `get_fire_perimeters` | `perimeters` | Mapped WFIGS wildfire perimeters in an area, largest first |