fix(agent): decouple media analysis from knowledge scope

backend/ruoyi-modules/ruoyi-aihr/src/main/java/org/dromara/aihr/knowledge/service/AihrKnowledgeQueryService.java

@@ -195,8 +195,9 @@ public class AihrKnowledgeQueryService {
         }
         AihrKnowledgePrincipal principal = projectPrincipal(principalResolver.current(), request.projectCode());
         AuthenticatedApp app = appService.requireSessionApp(principal.tenantId(), principal.clientKey());
-        Set<Long> spaceIds = accessService.resolveInternalSpaceIds(
-            principal, app, request.spaceCodes(), "READ");
+        Set<Long> spaceIds = mode == MediaMode.MEDIA_ONLY
+            ? Set.of()
+            : accessService.resolveInternalSpaceIds(principal, app, request.spaceCodes(), "READ");
         ConversationContext context = conversationContext(principal, app, request);
         String extracted = sopService.extractQuestionMedia(file, request.queryText());
         String extractedContext = extracted == null ? "" : extracted.trim();

backend/ruoyi-modules/ruoyi-aihr/src/test/java/org/dromara/aihr/knowledge/AihrKnowledgeQueryServiceTest.java

@@ -218,7 +218,6 @@ class AihrKnowledgeQueryServiceTest {
         var media = new MockMultipartFile("file", "pet.jpg", "image/jpeg", new byte[]{1});
         when(resolver.current()).thenReturn(principal);
         when(appService.requireSessionApp("000000", "app")).thenReturn(app);
-        when(access.resolveInternalSpaceIds(principal, app, List.of(), "READ")).thenReturn(Set.of(9L));
         when(conversations.prepare(principal, app, request)).thenReturn(context);
         when(conversations.append(any(), any(), any(), anyString(), anyString(), any())).thenReturn(1L);
         when(sop.extractQuestionMedia(media, "图中是什么宠物")).thenReturn("图中是一只金毛犬");
@@ -231,6 +230,7 @@ class AihrKnowledgeQueryServiceTest {
         assertFalse(result.noEvidence());
         assertTrue(result.answer().contains("图中是一只金毛犬"));
         verify(sop, never()).searchAuthorized(any(), any(), any());
+        verify(access, never()).resolveInternalSpaceIds(any(), any(), any(), anyString());
         var appendedAnswer = ArgumentCaptor.forClass(String.class);
         verify(conversations).append(any(), any(), any(), anyString(), appendedAnswer.capture(), any());
         assertTrue(appendedAnswer.getValue().contains("图中是一只金毛犬"));