fix somethings

.env.example

@@ -55,6 +55,11 @@ DOCUMENT_REPOSITORY_BACKEND=json
 # Default false: document processing runs in FastAPI's threadpool (no external worker needed).
 USE_CELERY_WORKER=false
 
+# ===== 法规感知爬取配置 =====
+PERCEPTION_CRAWL_TIMEOUT_SECONDS=120
+PERCEPTION_MAX_EVENTS_PER_SOURCE=100
+PERCEPTION_DIFF_SIMILARITY_THRESHOLD=0.85
+
 # ===== 阿里云文档解析 =====
 ALIBABA_ACCESS_KEY_ID=your_aliyun_access_key_id
 ALIBABA_ACCESS_KEY_SECRET=your_aliyun_access_key_secret