feat(map): control ghost pin movement speed

src/k1link/web/map_view_api.py

@@ -151,6 +151,11 @@ class MapGhostPinPresentation(StrictMapModel):
 class MapGhostPinConfiguration(StrictMapModel):
     count: int = Field(default=12, ge=1, le=100)
     radius_meters: float = Field(default=5_000.0, ge=100.0, le=100_000.0)
+    maximum_speed_meters_per_second: float = Field(
+        default=18.0,
+        ge=0.1,
+        le=100.0,
+    )
     simulation_enabled: bool = False
     anchor: MapGeoPoint | None = None
     positions: list[MapGhostPin] = Field(default_factory=list, max_length=100)
@@ -163,6 +168,11 @@ class MapGhostPinConfiguration(StrictMapModel):
         ids = [pin.id for pin in self.positions]
         if len(ids) != len(set(ids)):
             raise ValueError("ghost pin ids must be unique")
+        if any(
+            pin.speed_meters_per_second > self.maximum_speed_meters_per_second
+            for pin in self.positions
+        ):
+            raise ValueError("ghost pin speed exceeds configured maximum")
         return self