feat(backend): NUMERIC_TYPES / DATE_TYPES + orchestrator 识别 v2 条件树 payload

- web/core/db_adapter.py
  - 新增 NUMERIC_TYPES / DATE_TYPES frozenset（紧挨 TEXT_TYPES）
  - 覆盖 MySQL / 达梦 / Oracle 三方言的常见数值 + 日期类型

- web/core/orchestrator.py
  - 修 bug："自动追加 custom_value_check 步骤" 判断只认旧 payload {user_input}
  - v2 payload 用 group 树结构 → 永远 False → main_steps=[] → 0 步跑
  - 新增 _has_effective_leaf(node) 递归判断：新旧 payload 都认
  - 修后：steps=[] + 1 条有效规则 → 自动追加 custom_value_check → 跑 200 行命中

web/core/db_adapter.py

@@ -232,6 +232,28 @@ TEXT_TYPES = {
 }
 
 
+# ── 数值类型集合（自定义规则 v2 用：> / < / = 比较符） ──
+NUMERIC_TYPES = {
+    # MySQL
+    "int", "integer", "smallint", "tinyint", "bigint", "mediumint",
+    "decimal", "numeric", "float", "double", "real", "year",
+    # 达梦 / Oracle
+    "number", "decimal", "numeric", "float", "double", "real", "binary_float", "binary_double",
+    "money", "smallmoney", "dec",
+}
+
+
+# ── 日期/时间类型集合（自定义规则 v2 用：早于 / 晚于 比较符） ──
+DATE_TYPES = {
+    # MySQL
+    "date", "datetime", "timestamp", "time", "year",
+    # 达梦 / Oracle / SQL Server
+    "date", "datetime", "timestamp", "time",
+    "smalldatetime", "datetime2", "datetimeoffset", "interval",
+    "timestamp with time zone", "timestamp with local time zone",
+}
+
+
 # ── 连接管理 ──────────────────────────────────────────────
 class DBConnection:
     """统一的数据库连接封装。

web/core/orchestrator.py

@@ -716,11 +716,28 @@ async def run_governance_workflow(
     log("INFO", f"调度计划: 主步骤={main_steps}")
 
     # ── 自动追加：用户提交了 custom_rules → 追加 custom_value_check 步骤 ──
-    # 仅当至少有一条非空 user_input 的规则（空规则的项会在 step 内被跳过）
-    has_effective_rule = any(
-        (r.get("user_input") or "").strip()
-        for r in (_CUSTOM_RULES_CTX or [])
-    )
+    # 兼容新旧两种 payload：
+    #   - 旧：{rule_type, user_input}              —— 用 user_input 非空判断
+    #   - 新：{group: {kind, op, children: [...]}}  —— 递归查非空叶子
+    def _has_effective_leaf(node) -> bool:
+        if not isinstance(node, dict):
+            return False
+        if node.get("kind") == "leaf":
+            v = node.get("value")
+            return v is not None and (not isinstance(v, str) or v.strip() != "")
+        if node.get("kind") == "group":
+            return any(_has_effective_leaf(c) for c in (node.get("children") or []))
+        return False
+
+    def _rule_has_payload(r: dict) -> bool:
+        """一条规则有没有可执行内容（新旧 payload 都认）"""
+        # 新 payload：group 树里有非空叶子
+        if _has_effective_leaf(r.get("group")):
+            return True
+        # 旧 payload：user_input 非空
+        return bool((r.get("user_input") or "").strip())
+
+    has_effective_rule = any(_rule_has_payload(r) for r in (_CUSTOM_RULES_CTX or []))
     if has_effective_rule and "custom_value_check" not in main_steps:
         main_steps.append("custom_value_check")
         log("INFO", "已自动追加自定义规则步骤 custom_value_check", step="custom_value_check")