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-ui-service/src/test/kotlin/space/nstart/pcp/slots_service/service/CoverageSchemeServiceTest.kt

@@ -38,7 +38,7 @@ class CoverageSchemeServiceTest {
         val timeStop = LocalDateTime.of(2026, 4, 14, 12, 0)
         val serverUrl = startServer(
             mapOf(
-                "/v1/requests/req-1/with-cells" to stringHandler(200, requestWithCellsJson()),
+                "/v1/requests/req-1/cells" to stringHandler(200, requestWithCellsJson()),
                 "/api/coverage-schemes/calculate" to jsonHandler(
                     CoverageSchemeResponseDTO(
                         targetPolygonWkt = "POLYGON ((30 10, 40 40, 20 40, 30 10))",
@@ -111,7 +111,7 @@ class CoverageSchemeServiceTest {
     fun `requestCoverageScheme converts backend error to CustomErrorException`() {
         val serverUrl = startServer(
             mapOf(
-                "/v1/requests/req-1/with-cells" to stringHandler(200, requestWithCellsJson()),
+                "/v1/requests/req-1/cells" to stringHandler(200, requestWithCellsJson()),
                 "/api/coverage-schemes/calculate" to stringHandler(400, """{"message":"coverage failed"}""")
             )
         )

services/pcp-ui-service/src/test/kotlin/space/nstart/pcp/slots_service/service/EarthServiceTest.kt

@@ -377,7 +377,7 @@ class EarthServiceTest {
 
         service.reqcells(requestId.toString())
 
-        assertEquals("/v1/requests/$requestId/with-cells", requestedUris.single().path)
+        assertEquals("/v1/requests/$requestId/cells", requestedUris.single().path)
         assertFalse(requestedUris.any { uri -> uri.path.startsWith("/api/") })
     }