feat(natural): add tropical cyclone tracking from NHC and GDACS (#1357)

* feat(natural): add tropical cyclone tracking from NHC and GDACS

Integrate NHC ArcGIS REST API (15 storm slots across AT/EP/CP basins)
and GDACS TC field extraction to provide real-time tropical cyclone data
with forecast tracks, uncertainty cones, and historical track paths.

- Proto: add optional TC fields (storm_id, wind_kt, pressure_mb, etc.)
  plus ForecastPoint, PastTrackPoint, CoordRing messages
- Server/seed: NHC two-pass query (forecast points then detail layers),
  GDACS wind/pressure parsing, Saffir-Simpson classification, dedup
  strategy (NHC > GDACS > EONET), pressureMb validation (850-1050),
  advisory date with Number.isFinite guard
- Globe: dashed red forecast track, per-segment wind-colored past track,
  semi-transparent orange forecast cone polygon
- Popup: TC details panel with color-coded category badge, wind/pressure
- Frontend mapper: forward all TC fields, convert CoordRing to number[][][]

* fix(natural): improve GDACS dedup, NHC classification, and TC popup i18n

- GDACS dedup now checks name + geographic proximity instead of name-only
- NHC classification uses stormtype field for subtropical/post-tropical
- TC popup labels use t() for localization instead of hardcoded English

* feat(map): add cyclone-specific deck.gl layers for 2D map

- Storm center ScatterplotLayer with Saffir-Simpson wind coloring
- Past track PathLayer with per-segment wind-speed color ramp
- Forecast track PathLayer with dashed line via PathStyleExtension
- Cone PolygonLayer for forecast uncertainty visualization
- Tooltip and click routing for all new storm layer IDs

* fix(map): remove click routing for synthetic storm track/cone layers

Track and cone layers carry lightweight objects without full NaturalEvent
fields. Clicking them would pass incomplete data to the popup renderer.
Only storm-centers-layer (which holds the full NaturalEvent) routes to
the natEvent popup. Tracks and cones remain tooltip-only.

* fix(map): attach parent NaturalEvent to synthetic storm layers for clicks

Synthetic track/cone objects now carry _event reference to the parent
NaturalEvent. Click handler unwraps _event before passing to popup,
so clicking any storm element opens the full TC popup.

docs/api/NaturalService.openapi.yaml

@@ -115,3 +115,89 @@ components:
                     type: string
                 closed:
                     type: boolean
+                stormId:
+                    type: string
+                    description: Optional tropical cyclone fields (populated for severeStorms from GDACS TC / NHC)
+                stormName:
+                    type: string
+                basin:
+                    type: string
+                stormCategory:
+                    type: integer
+                    format: int32
+                classification:
+                    type: string
+                windKt:
+                    type: integer
+                    format: int32
+                pressureMb:
+                    type: integer
+                    format: int32
+                movementDir:
+                    type: integer
+                    format: int32
+                movementSpeedKt:
+                    type: integer
+                    format: int32
+                forecastTrack:
+                    type: array
+                    items:
+                        $ref: '#/components/schemas/ForecastPoint'
+                conePolygon:
+                    type: array
+                    items:
+                        $ref: '#/components/schemas/CoordRing'
+                pastTrack:
+                    type: array
+                    items:
+                        $ref: '#/components/schemas/PastTrackPoint'
+        ForecastPoint:
+            type: object
+            properties:
+                lat:
+                    type: number
+                    format: double
+                lon:
+                    type: number
+                    format: double
+                hour:
+                    type: integer
+                    format: int32
+                windKt:
+                    type: integer
+                    format: int32
+                category:
+                    type: integer
+                    format: int32
+        CoordRing:
+            type: object
+            properties:
+                points:
+                    type: array
+                    items:
+                        $ref: '#/components/schemas/Coordinate'
+        Coordinate:
+            type: object
+            properties:
+                lon:
+                    type: number
+                    format: double
+                lat:
+                    type: number
+                    format: double
+        PastTrackPoint:
+            type: object
+            properties:
+                lat:
+                    type: number
+                    format: double
+                lon:
+                    type: number
+                    format: double
+                windKt:
+                    type: integer
+                    format: int32
+                timestamp:
+                    type: integer
+                    format: int64
+                    description: 'Warning: Values > 2^53 may lose precision in JavaScript'