@mytec: iter3.7.0 start, gpu calc int

backend/app/api/routes/coverage.py

@@ -14,6 +14,7 @@ from app.services.coverage_service import (
     select_propagation_model,
 )
 from app.services.parallel_coverage_service import CancellationToken
+from app.services.boundary_service import calculate_coverage_boundary
 
 router = APIRouter()
 
@@ -24,6 +25,12 @@ class CoverageRequest(BaseModel):
     settings: CoverageSettings = CoverageSettings()
 
 
+class BoundaryPoint(BaseModel):
+    """Single boundary coordinate"""
+    lat: float
+    lon: float
+
+
 class CoverageResponse(BaseModel):
     """Coverage calculation response"""
     points: List[CoveragePoint]
@@ -32,6 +39,7 @@ class CoverageResponse(BaseModel):
     stats: dict
     computation_time: float  # seconds
     models_used: List[str]  # which models were active
+    boundary: Optional[List[BoundaryPoint]] = None  # coverage boundary polygon
 
 
 @router.post("/calculate")
@@ -131,13 +139,24 @@ async def calculate_coverage(request: CoverageRequest) -> CoverageResponse:
         "points_with_atmospheric_loss": sum(1 for p in points if p.atmospheric_loss > 0),
     }
 
+    # Calculate coverage boundary
+    boundary = None
+    if points:
+        boundary_coords = calculate_coverage_boundary(
+            [p.model_dump() for p in points],
+            threshold_dbm=request.settings.min_signal,
+        )
+        if boundary_coords:
+            boundary = [BoundaryPoint(**c) for c in boundary_coords]
+
     return CoverageResponse(
         points=points,
         count=len(points),
         settings=effective_settings,
         stats=stats,
         computation_time=round(computation_time, 2),
-        models_used=models_used
+        models_used=models_used,
+        boundary=boundary,
     )