feat(ocr): 支持 PP-OCRv6 异步识别模型并设为默认，解决排队与高延迟问题

backend/internal/modules/chat/qrcode.go

@@ -23,7 +23,7 @@ const (
 	qrCodeOCRJobURLConfigKey = "integration.paddle_ocr_job_url"
 	qrCodeOCRModelConfigKey  = "integration.paddle_ocr_model"
 	defaultQrCodeOCRJobURL   = "https://paddleocr.aistudio-app.com/api/v2/ocr/jobs"
-	defaultQrCodeOCRModel    = "PaddleOCR-VL-1.6"
+	defaultQrCodeOCRModel    = "PP-OCRv6"
 )
 
 var (

backend/internal/modules/chat/qrcode_ocr.go

@@ -443,6 +443,7 @@ func (r *Repository) submitPaddleOCRJob(ctx context.Context, config *QrCodeOCRCo
 	optionalPayload, _ := json.Marshal(map[string]bool{
 		"useDocOrientationClassify": false,
 		"useDocUnwarping":           false,
+		"useTextlineOrientation":    false,
 		"useChartRecognition":       false,
 	})
 	_ = writer.WriteField("optionalPayload", string(optionalPayload))
@@ -790,13 +791,25 @@ func collectPaddleOCRText(value any, texts *[]string) {
 			collectPaddleOCRText(item, texts)
 		}
 	case map[string]any:
+		// PP-OCRv6: prunedResult.rec_texts 包含检测并识别的文字列表
+		if recTexts, ok := v["rec_texts"].([]any); ok {
+			for _, item := range recTexts {
+				if text, ok := item.(string); ok && strings.TrimSpace(text) != "" {
+					*texts = append(*texts, text)
+				}
+			}
+			return
+		}
+		// PaddleOCR-VL: markdown.text 包含识别文本
 		if markdown, ok := v["markdown"].(map[string]any); ok {
 			if text, ok := markdown["text"].(string); ok && strings.TrimSpace(text) != "" {
 				*texts = append(*texts, text)
 			}
 		}
 		for key, item := range v {
-			if key == "images" || key == "outputImages" {
+			if key == "images" || key == "outputImages" || key == "ocrImage" || key == "inputImage" ||
+				key == "preprocessedImages" || key == "model_settings" || key == "text_det_params" ||
+				key == "logId" || key == "errorCode" || key == "errorMsg" || key == "dataInfo" {
 				continue
 			}
 			collectPaddleOCRText(item, texts)

backend/internal/modules/chat/qrcode_ocr_test.go

@@ -222,3 +222,20 @@ func pngHeader(width, height uint32) []byte {
 	binary.Write(&result, binary.BigEndian, checksum)
 	return result.Bytes()
 }
+
+func TestCollectPaddleOCRJSONLTextSupportsPPOCRv6(t *testing.T) {
+	rawJSONL := `{"result":{"ocrResults":[{"prunedResult":{"rec_texts":["火爆出租-778群","扫码加入群聊"]},"ocrImage":"https://example.com/ocr.jpg","inputImage":"https://example.com/in.jpg"}]}}`
+	text := collectPaddleOCRJSONLText(rawJSONL)
+	if !strings.Contains(text, "火爆出租-778群") || !strings.Contains(text, "扫码加入群聊") {
+		t.Fatalf("collected text = %q, expected recognized group texts", text)
+	}
+	if strings.Contains(text, "ocr.jpg") || strings.Contains(text, "in.jpg") {
+		t.Fatalf("collected text = %q, should not include image URLs", text)
+	}
+
+	candidates := parseQrCodeGroupNameCandidates(text)
+	if len(candidates) == 0 || candidates[0] != "火爆出租-778群" {
+		t.Fatalf("candidates = %v, want 火爆出租-778群 as first candidate", candidates)
+	}
+}
+

backend/internal/modules/systemconfig/repository.go

@@ -47,7 +47,7 @@ var defaultConfigs = []defaultConfig{
 	{Key: "chat.renter_retention_days_after_order_end", Value: "5", Description: "订单结束后租客保留在发布群的天数（3-7）"},
 	{Key: "integration.paddle_ocr_token", Value: "", Description: "PaddleOCR API Token，用于二维码群名自动识别"},
 	{Key: "integration.paddle_ocr_job_url", Value: "https://paddleocr.aistudio-app.com/api/v2/ocr/jobs", Description: "PaddleOCR 异步任务接口地址"},
-	{Key: "integration.paddle_ocr_model", Value: "PaddleOCR-VL-1.6", Description: "PaddleOCR 识别模型"},
+	{Key: "integration.paddle_ocr_model", Value: "PP-OCRv6", Description: "PaddleOCR 识别模型（默认 PP-OCRv6，支持 PaddleOCR-VL-1.6 等）"},
 	{Key: homeAnnouncementsConfigKey, Value: defaultHomeAnnouncementsConfigValue(), Description: "移动端首页公告 JSON 数组"},
 	{Key: homeBannersConfigKey, Value: defaultHomeBannersConfigValue(), Description: "移动端首页轮播图 JSON 数组"},
 	{Key: awRecycleConfigKey, Value: defaultAWRecycleConfigValue(), Description: "首页 AW炫彩回收入口配置 JSON（标题/副标题/展示图片）"},

backend/migrations/000065_default_paddle_ocr_model_v6.sql

@@ -0,0 +1,13 @@
+-- +goose Up
+-- +goose StatementBegin
+UPDATE system_configs
+SET value = 'PP-OCRv6', description = 'PaddleOCR 识别模型（默认 PP-OCRv6，支持 PaddleOCR-VL-1.6 等）'
+WHERE `key` = 'integration.paddle_ocr_model' AND (value = 'PaddleOCR-VL-1.6' OR value = '' OR value IS NULL);
+-- +goose StatementEnd
+
+-- +goose Down
+-- +goose StatementBegin
+UPDATE system_configs
+SET value = 'PaddleOCR-VL-1.6', description = 'PaddleOCR 识别模型'
+WHERE `key` = 'integration.paddle_ocr_model' AND value = 'PP-OCRv6';
+-- +goose StatementEnd

frontend/src/features/admin/views/AdminSystemConfigsView.vue

@@ -145,7 +145,7 @@ const paddleOcrJobUrlConfig = computed(() =>
   )
 )
 const paddleOcrModelConfig = computed(() =>
-  systemConfigByKey('integration.paddle_ocr_model', 'PaddleOCR-VL-1.6', 'PaddleOCR 识别模型')
+  systemConfigByKey('integration.paddle_ocr_model', 'PP-OCRv6', 'PaddleOCR 识别模型')
 )
 
 const regularConfigs = computed(() =>

frontend/src/shared/utils/systemConfigOptions.ts

@@ -58,7 +58,10 @@ export const systemConfigSelectOptions: Record<string, SystemConfigOption[]> = {
     { label: '5 天', value: '5' },
     { label: '7 天', value: '7' },
   ],
-  'integration.paddle_ocr_model': [{ label: 'PaddleOCR-VL-1.6', value: 'PaddleOCR-VL-1.6' }],
+  'integration.paddle_ocr_model': [
+    { label: 'PP-OCRv6（推荐，低延迟少排队）', value: 'PP-OCRv6' },
+    { label: 'PaddleOCR-VL-1.6', value: 'PaddleOCR-VL-1.6' },
+  ],
 }
 
 export function getSystemConfigSelectOptions(key: string) {