feat(kling): 接入O1与3.0 Omni兼容接口

新增中国区可灵 V1 AK/SK Omni 协议与 API 2.0 兼容路径，补齐任务隔离、外部任务幂等、参数校验和 OpenAPI 文档。\n\n验证：O1 与 3.0 Omni 真实 V1 任务成功；Go、前端、依赖审计、迁移及 CI 脚本门禁通过。

apps/api/internal/clients/keling.go

@@ -420,15 +420,21 @@ func (c KelingClient) kelingOmniPayload(ctx context.Context, request Request, to
 	}
 	uploadedElementIDs = append(uploadedElementIDs, createdIDs...)
 	shots := kelingShotPrompts(content)
-	hasMultiPrompt := len(shots) > 0
+	rawMultiPrompt := mapListFromAny(body["multi_prompt"])
+	hasMultiPrompt := len(shots) > 0 || len(rawMultiPrompt) > 0
+	multiShot := boolValue(body, "multi_shot") || hasMultiPrompt
 	hasVideo := len(videos) > 0
 	hasVideoEdit := kelingHasBaseVideo(videos)
 	hasFirstFrame := kelingHasFirstFrame(images)
 
+	watermarkEnabled := boolValue(body, "watermark")
+	if watermarkInfo := mapFromAny(body["watermark_info"]); watermarkInfo != nil {
+		watermarkEnabled = boolValue(watermarkInfo, "enabled")
+	}
 	payload := map[string]any{
 		"model_name":      upstreamModelName(request.Candidate),
 		"mode":            kelingModeByResolution(firstNonEmptyStringValue(body, "resolution", "size")),
-		"watermark_info":  map[string]any{"enabled": false},
+		"watermark_info":  map[string]any{"enabled": watermarkEnabled},
 		"negative_prompt": strings.TrimSpace(stringFromAny(body["negative_prompt"])),
 	}
 	if !hasMultiPrompt {
@@ -449,29 +455,62 @@ func (c KelingClient) kelingOmniPayload(ctx context.Context, request Request, to
 	if len(elements) > 0 {
 		payload["element_list"] = elements
 	}
+	if voices := mapListFromAny(body["voice_list"]); len(voices) > 0 {
+		payload["voice_list"] = voices
+	}
 	if (boolValue(body, "audio") || boolValue(body, "output_audio")) && !hasVideo {
 		payload["sound"] = "on"
 	}
-	if hasMultiPrompt {
+	if multiShot {
 		payload["multi_shot"] = true
-		payload["shot_type"] = "customize"
-		total := 0.0
-		multiPrompt := make([]any, 0, len(shots))
-		for index, shot := range shots {
-			duration := shot.duration
-			if duration <= 0 {
-				duration = 5
+		shotType := strings.TrimSpace(firstNonEmptyStringValue(body, "shot_type", "shotType"))
+		if shotType == "" {
+			if hasMultiPrompt {
+				shotType = "customize"
+			} else {
+				shotType = "intelligence"
 			}
-			total += duration
-			multiPrompt = append(multiPrompt, map[string]any{
-				"index":    index + 1,
-				"prompt":   shot.text,
-				"duration": fmtDuration(duration, 5),
-			})
 		}
-		delete(payload, "prompt")
-		payload["multi_prompt"] = multiPrompt
-		payload["duration"] = fmtDuration(total, 0)
+		payload["shot_type"] = shotType
+		if shotType == "customize" {
+			total := 0.0
+			multiPrompt := make([]any, 0, len(rawMultiPrompt)+len(shots))
+			if len(rawMultiPrompt) > 0 {
+				for index, item := range rawMultiPrompt {
+					duration := numericValue(item["duration"], 0)
+					total += duration
+					multiPrompt = append(multiPrompt, map[string]any{
+						"index":    int(math.Round(numericValue(item["index"], float64(index+1)))),
+						"prompt":   strings.TrimSpace(stringFromAny(item["prompt"])),
+						"duration": fmtDuration(duration, 0),
+					})
+				}
+			} else {
+				for index, shot := range shots {
+					duration := shot.duration
+					if duration <= 0 {
+						duration = 5
+					}
+					total += duration
+					multiPrompt = append(multiPrompt, map[string]any{
+						"index":    index + 1,
+						"prompt":   shot.text,
+						"duration": fmtDuration(duration, 5),
+					})
+				}
+			}
+			delete(payload, "prompt")
+			payload["multi_prompt"] = multiPrompt
+			if total > 0 {
+				payload["duration"] = fmtDuration(total, 0)
+			}
+		}
+	}
+	if callbackURL := strings.TrimSpace(firstNonEmptyStringValue(body, "callback_url", "callbackUrl")); callbackURL != "" {
+		payload["callback_url"] = callbackURL
+	}
+	if externalTaskID := strings.TrimSpace(firstNonEmptyStringValue(body, "external_task_id", "externalTaskId")); externalTaskID != "" {
+		payload["external_task_id"] = externalTaskID
 	}
 	deleteEmptyStringFields(payload)
 	if hasVideoEdit {
@@ -1140,9 +1179,15 @@ func kelingVideoSuccessResult(request Request, upstreamTaskID string, raw map[st
 			continue
 		}
 		item := map[string]any{"url": url, "video_url": url, "type": "video"}
+		if id := strings.TrimSpace(stringFromAny(video["id"])); id != "" {
+			item["id"] = id
+		}
 		if duration := intFromAny(video["duration"]); duration > 0 {
 			item["duration"] = duration
 		}
+		if watermarkURL := strings.TrimSpace(stringFromAny(video["watermark_url"])); watermarkURL != "" {
+			item["watermark_url"] = watermarkURL
+		}
 		items = append(items, item)
 	}
 	created := intFromAny(data["created_at"])