Merge pull request #428 from Ghostubborn/feat/i18n

feat(i18n): 添加多语言切换功能，支持中英文

backend/app/services/ontology_generator.py

@@ -8,6 +8,7 @@ import logging
 import re
 from typing import Dict, Any, List, Optional
 from ..utils.llm_client import LLMClient
+from ..utils.locale import get_language_instruction
 
 logger = logging.getLogger(__name__)
 
@@ -83,7 +84,7 @@ ONTOLOGY_SYSTEM_PROMPT = """你是一个专业的知识图谱本体设计专家
             "attributes": []
         }
     ],
-    "analysis_summary": "对文本内容的简要分析说明（中文）"
+    "analysis_summary": "对文本内容的简要分析说明"
 }
 ```
 
@@ -205,8 +206,10 @@ class OntologyGenerator:
             additional_context
         )
         
+        lang_instruction = get_language_instruction()
+        system_prompt = f"{ONTOLOGY_SYSTEM_PROMPT}\n\n{lang_instruction}\nIMPORTANT: Entity type names MUST be in English PascalCase (e.g., 'PersonEntity', 'MediaOrganization'). Relationship type names MUST be in English UPPER_SNAKE_CASE (e.g., 'WORKS_FOR'). Attribute names MUST be in English snake_case. Only description fields and analysis_summary should use the specified language above."
         messages = [
-            {"role": "system", "content": ONTOLOGY_SYSTEM_PROMPT},
+            {"role": "system", "content": system_prompt},
             {"role": "user", "content": user_message}
         ]