feat: 后端新增 /ai/endpoint/test 和 /ai/endpoint/stream 接口

- AiRuntimeRequest DTO 新增 endpointId 字段
- AiRuntimeService 接口新增 testEndpoint 和 invokeEndpointStream
- AiRuntimeServiceImpl 实现 endpoint 直调链路（绕过场景解析）
- AiRoutingController 新增 /endpoint/test 和 /endpoint/stream

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

backend-single/src/main/java/com/emotion/controller/AiRoutingController.java

@@ -28,6 +28,7 @@ import org.springframework.web.servlet.mvc.method.annotation.SseEmitter;
 
 import java.io.IOException;
 import java.util.List;
+import java.util.Map;
 import java.util.concurrent.CompletableFuture;
 
 @Slf4j
@@ -150,6 +151,31 @@ public class AiRoutingController {
         return emitter;
     }
 
+    @PostMapping("/endpoint/test")
+    public Result<AiRuntimeTestResponse> endpointTest(@RequestBody JSONObject payload) {
+        String endpointId = payload.getString("endpointId");
+        JSONObject inputs = payload.getJSONObject("inputs");
+        Map<String, Object> inputMap = inputs == null ? Map.of() : inputs;
+        return Result.success(runtimeService.testEndpoint(endpointId, inputMap));
+    }
+
+    @PostMapping("/endpoint/stream")
+    public SseEmitter endpointStream(@RequestBody JSONObject payload) {
+        String endpointId = payload.getString("endpointId");
+        JSONObject inputs = payload.getJSONObject("inputs");
+        Map<String, Object> inputMap = inputs == null ? Map.of() : inputs;
+        SseEmitter emitter = new SseEmitter(0L);
+        CompletableFuture.runAsync(() -> {
+            runtimeService.invokeEndpointStream(endpointId, inputMap, event -> sendEvent(emitter, event));
+            emitter.complete();
+        }).exceptionally(error -> {
+            sendEvent(emitter, AiStreamEvent.error("AI_ENDPOINT_TEST_INTERRUPTED", error.getMessage()));
+            emitter.completeWithError(error);
+            return null;
+        });
+        return emitter;
+    }
+
     private AiRuntimeRequest withCurrentUser(AiRuntimeRequest request) {
         request.setUserId(UserContextHolder.getCurrentUserId());
         request.setUserName(UserContextHolder.getCurrentUsername());

backend-single/src/main/java/com/emotion/dto/request/ai/AiRuntimeRequest.java

@@ -9,10 +9,12 @@ import java.util.Set;
 @Data
 public class AiRuntimeRequest {
 
-    private static final Set<String> RESERVED_KEYS = Set.of("sceneCode", "scene", "inputs", "userId", "userName", "username", "userType", "requestId");
+    private static final Set<String> RESERVED_KEYS = Set.of("sceneCode", "scene", "inputs", "userId", "userName", "username", "userType", "requestId", "endpointId");
 
     private String sceneCode;
 
+    private String endpointId;
+
     private String userId;
 
     private String userName;
@@ -33,6 +35,7 @@ public class AiRuntimeRequest {
             sceneCode = payload.getString("scene");
         }
         request.setSceneCode(sceneCode);
+        request.setEndpointId(payload.getString("endpointId"));
 
         JSONObject inputs = payload.getJSONObject("inputs");
         if (inputs == null) {

backend-single/src/main/java/com/emotion/service/AiRuntimeService.java

@@ -4,6 +4,7 @@ import com.emotion.dto.request.ai.AiRuntimeRequest;
 import com.emotion.dto.response.ai.AiRuntimeTestResponse;
 import com.emotion.dto.response.ai.AiStreamEvent;
 
+import java.util.Map;
 import java.util.function.Consumer;
 
 public interface AiRuntimeService {
@@ -11,4 +12,8 @@ public interface AiRuntimeService {
     void invokeStream(AiRuntimeRequest request, Consumer<AiStreamEvent> consumer);
 
     AiRuntimeTestResponse test(AiRuntimeRequest request);
+
+    AiRuntimeTestResponse testEndpoint(String endpointId, Map<String, Object> inputs);
+
+    void invokeEndpointStream(String endpointId, Map<String, Object> inputs, Consumer<AiStreamEvent> consumer);
 }

backend-single/src/main/java/com/emotion/service/impl/AiRuntimeServiceImpl.java

@@ -140,6 +140,113 @@ public class AiRuntimeServiceImpl implements AiRuntimeService {
                 .build();
     }
 
+    @Override
+    public AiRuntimeTestResponse testEndpoint(String endpointId, Map<String, Object> inputs) {
+        long startedAt = System.currentTimeMillis();
+        StringBuilder output = new StringBuilder();
+        AtomicInteger chunks = new AtomicInteger(0);
+        final String[] errorCode = new String[1];
+        final String[] errorMessage = new String[1];
+
+        invokeEndpointStream(endpointId, inputs, event -> {
+            if ("delta".equals(event.getType()) && event.getContent() != null) {
+                chunks.incrementAndGet();
+                output.append(event.getContent());
+            } else if ("error".equals(event.getType())) {
+                errorCode[0] = event.getCode();
+                errorMessage[0] = event.getMessage();
+            }
+        });
+
+        return AiRuntimeTestResponse.builder()
+                .sceneCode("")
+                .status(errorCode[0] == null ? "success" : "failed")
+                .output(output.toString())
+                .streamChunks(chunks.get())
+                .durationMs(System.currentTimeMillis() - startedAt)
+                .errorCode(errorCode[0])
+                .errorMessage(errorMessage[0])
+                .build();
+    }
+
+    @Override
+    public void invokeEndpointStream(String endpointId, Map<String, Object> inputs, Consumer<AiStreamEvent> consumer) {
+        long startedAt = System.currentTimeMillis();
+        AtomicLong firstTokenAt = new AtomicLong(0);
+        AtomicInteger chunks = new AtomicInteger(0);
+        String requestId = UUID.randomUUID().toString();
+        StringBuilder output = new StringBuilder();
+
+        AiEndpointConfig endpoint = endpointConfigService.getEnabledById(endpointId);
+        if (endpoint == null) {
+            throw new IllegalStateException("AI_ENDPOINT_DISABLED");
+        }
+        AiProvider provider = providerService.getEnabledById(endpoint.getProviderId());
+        if (provider == null) {
+            throw new IllegalStateException("AI_PROVIDER_DISABLED");
+        }
+        AiProviderAdapter adapter = adapters.stream()
+                .filter(item -> item.supports(provider.getProviderType()))
+                .findFirst()
+                .orElseThrow(() -> new IllegalStateException("AI_PROVIDER_ADAPTER_NOT_FOUND"));
+
+        AiRuntimeRequest request = new AiRuntimeRequest();
+        request.setInputs(inputs == null ? new com.alibaba.fastjson2.JSONObject() : new com.alibaba.fastjson2.JSONObject(inputs));
+        request.setEndpointId(endpointId);
+        request.setUserId(resolveUserId(request));
+        request.setUserName(UserContextHolder.getCurrentUsername());
+        request.setUserType(UserContextHolder.getCurrentUserType());
+        request.setRequestId(UserContextHolder.getRequestId());
+        enrichInputs(request);
+
+        AiCallLog callLog = new AiCallLog();
+        callLog.setRequestId(requestId);
+        callLog.setEndpointCode(endpoint.getEndpointCode());
+        callLog.setProviderCode(provider.getProviderCode());
+        callLog.setUserId(request.getUserId());
+        callLog.setInputText(JSON.toJSONString(request.getInputs()));
+        callLog.setStatus("running");
+        callLogService.save(callLog);
+
+        consumer.accept(AiStreamEvent.start(endpoint.getEndpointCode()));
+        try {
+            adapter.stream(provider, endpoint, request, event -> {
+                if ("delta".equals(event.getType())) {
+                    chunks.incrementAndGet();
+                    if (firstTokenAt.compareAndSet(0, System.currentTimeMillis())) {
+                        log.debug("AI first token emitted, endpoint={}, requestId={}", endpoint.getEndpointCode(), requestId);
+                    }
+                    if (event.getContent() != null) {
+                        output.append(event.getContent());
+                    }
+                }
+                consumer.accept(event);
+            });
+
+            callLog.setStatus("success");
+            callLog.setOutputText(output.toString());
+            callLog.setStreamChunks(chunks.get());
+            callLog.setFirstTokenMs(firstTokenAt.get() == 0 ? null : firstTokenAt.get() - startedAt);
+            callLog.setDurationMs(System.currentTimeMillis() - startedAt);
+            callLogService.updateById(callLog);
+            consumer.accept(AiStreamEvent.done(Map.of(
+                    "requestId", requestId,
+                    "streamChunks", chunks.get(),
+                    "durationMs", callLog.getDurationMs()
+            )));
+        } catch (Exception e) {
+            String code = normalizeErrorCode(e);
+            callLog.setStatus("failed");
+            callLog.setErrorCode(code);
+            callLog.setErrorMessage(e.getMessage());
+            callLog.setOutputText(output.toString());
+            callLog.setStreamChunks(chunks.get());
+            callLog.setDurationMs(System.currentTimeMillis() - startedAt);
+            saveOrUpdateLog(callLog);
+            consumer.accept(AiStreamEvent.error(code, e.getMessage()));
+        }
+    }
+
     private RuntimeTarget resolveTarget(AiRuntimeRequest request) {
         if (!StringUtils.hasText(request.getSceneCode())) {
             throw new IllegalArgumentException("AI_SCENE_REQUIRED");