优化：统一意图分类逻辑，复用 intent.py，删除冗余的 intent_classifier.py

backend/app/core/__init__.py

@@ -2,12 +2,6 @@
 
 from .formatter import MarkdownFormatter
 from .state_base import BaseState
-from .intent_classifier import (
-    IntentType,
-    IntentResult,
-    IntentClassifier,
-    get_intent_classifier
-)
 from .human_review import (
     ReviewManager,
     InMemoryReviewStore,
@@ -27,30 +21,9 @@ from .visualization import (
     generate_chart
 )
 
-# 为了兼容性，添加 classify_intent 函数
-def classify_intent(user_input: str, context: str = None):
-    """兼容旧代码的 classify_intent 函数"""
-    from backend.app.core.intent_classifier import get_intent_classifier
-    import asyncio
-    classifier = get_intent_classifier()
-    try:
-        loop = asyncio.get_event_loop()
-        if loop.is_running():
-            task = loop.create_task(classifier.classify(user_input, context))
-            return asyncio.run_coroutine_threadsafe(task, loop).result()
-    except RuntimeError:
-        loop = asyncio.new_event_loop()
-        asyncio.set_event_loop(loop)
-        return loop.run_until_complete(classifier.classify(user_input, context))
-
 __all__ = [
     "MarkdownFormatter",
     "BaseState",
-    "IntentType",
-    "IntentResult",
-    "IntentClassifier",
-    "classify_intent",
-    "get_intent_classifier",
     "ReviewManager",
     "InMemoryReviewStore",
     "ReviewStatus",
@@ -62,5 +35,5 @@ __all__ = [
     "VisualizationTool",
     "ChartData",
     "get_visualization_tool",
-    "generate_chart"
+    "generate_chart",
 ]