feat:新增投顾agent和nl2sqlagent

nl2sql/runtime_config.py

@@ -0,0 +1,26 @@
+"""NL2SQL 进程内运行时配置。"""
+from __future__ import annotations
+
+from pydantic import BaseModel, ConfigDict, Field
+
+
+class Nl2SqlRuntimeConfig(BaseModel):
+    """可由管理员动态调整的非敏感查询参数。"""
+
+    model_config = ConfigDict(extra="forbid", validate_assignment=True)
+
+    cache_ttl: int = Field(default=300, ge=30, le=86400)
+    retrieval_top_k: int = Field(default=5, ge=1, le=50)
+    retrieval_threshold: float = Field(default=0.0, ge=0.0, le=1.0)
+    max_rows: int = Field(default=1000, ge=1, le=100000)
+    max_join_depth: int = Field(default=3, ge=0, le=10)
+
+    def update(self, **values: object) -> dict:
+        """校验并更新配置，返回当前完整配置。"""
+        updated = self.model_copy(update=values)
+        for key, value in updated.model_dump().items():
+            setattr(self, key, value)
+        return self.model_dump()
+
+
+runtime_config = Nl2SqlRuntimeConfig()