feat: update area management to implement hard delete and adjust related references

docs/openapi/visione.openapi.yaml

@@ -85,9 +85,6 @@
       "Area": {
         "additionalProperties": true,
         "properties": {
-          "active": {
-            "type": "boolean"
-          },
           "boundary_geojson": {
             "$ref": "#/components/schemas/GeoJsonObject"
           },
@@ -1713,7 +1710,7 @@
     },
     "/api/v1/admin/areas/{id}": {
       "delete": {
-        "description": "Soft-deletes an existing municipal area by setting active to false.",
+        "description": "Deletes an existing municipal area and clears linked report/team area references.",
         "operationId": "AdminController.deleteArea",
         "parameters": [
           {
@@ -2268,7 +2265,7 @@
     },
     "/api/v1/areas": {
       "get": {
-        "description": "Lists active municipal areas.",
+        "description": "Lists municipal areas.",
         "operationId": "PublicController.listAreas",
         "parameters": [ ],
         "responses": {