feat:新增投顾agent和nl2sqlagent

common/suitability.py

@@ -0,0 +1,29 @@
+"""客户 C 级与产品 R 级的公共适当性校验。"""
+from __future__ import annotations
+
+from dataclasses import dataclass
+import re
+
+
+@dataclass(frozen=True)
+class SuitabilityResult:
+    ok: bool
+    reason: str
+
+
+_RISK_PATTERN = re.compile(r"^[CR]([1-5])$")
+
+
+def check_suitability(customer_risk: str, product_risk: str) -> SuitabilityResult:
+    customer_match = _RISK_PATTERN.fullmatch(customer_risk or "")
+    product_match = _RISK_PATTERN.fullmatch(product_risk or "")
+    if not customer_match or not product_match:
+        return SuitabilityResult(False, "客户或产品风险等级无效")
+    if customer_risk[0] != "C" or product_risk[0] != "R":
+        return SuitabilityResult(False, "客户或产品风险等级类型无效")
+
+    customer_level = int(customer_match.group(1))
+    product_level = int(product_match.group(1))
+    if product_level > customer_level:
+        return SuitabilityResult(False, "产品风险等级高于客户风险等级")
+    return SuitabilityResult(True, "适当性校验通过")