refactor(pcp-request-service): rename REST endpoints and DTOs for clarity

- GET /v1/requests/with-geometry → /v1/requests/map
- GET /v1/requests/{id}/with-cells → /v1/requests/{id}/cells
- GET /v1/cells/with-requests → /v1/cells/priority-map
- CreateRequestRequestDto → CreateRequestDto
- ListRequestsQueryDto → RequestListFilter
- RequestWithGeometry* → RequestMap* (RequestMapItemDto, RequestMapPageDto)
- CellsWithRequestsResponseDto → CellPriorityMapResponseDto
- DeleteRequestStatusDto removed; status field removed from DeleteRequestResponseDto

Updated all consumers (pcp-complex-mission-service, pcp-ui-service, slots-service),
tests, and OpenAPI YAML.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

services/pcp-complex-mission-service/src/main/kotlin/space/nstart/pcp/pcp_satellites_service/service/EarthGridService.kt

@@ -50,7 +50,7 @@ class EarthGridService(webClientBuilderProvider: ObjectProvider<WebClient.Builde
         val params = mutableListOf("minImportance=$REQUEST_GRID_MIN_IMPORTANCE")
         countLat?.let { params += "countLat=$it" }
         countLong?.let { params += "countLong=$it" }
-        return "/v1/cells/with-requests?${params.joinToString("&")}"
+        return "/v1/cells/priority-map?${params.joinToString("&")}"
     }
 
     private fun CellWithRequestsResponseDto.toEarthCellWithRequestsDto(): EarthCellWithRequestsDTO =