feat: 新增风险图谱算法与系统仪表盘及操作反馈体系

后端新增风险图谱算法模块、风险观察与反馈服务、规则 DSL
校验器和可解释性引擎，完善系统仪表盘和财务仪表盘统计，
优化 agent 运行和编排执行链路，清理旧开发文档，前端新增
系统趋势、负载热力图等多种仪表盘图表组件，完善操作反馈
对话框和工作台日期选择器，优化报销创建和审批详情交互，
补充单元测试覆盖。

server/src/app/services/risk_rule_value_compare.py

@@ -0,0 +1,46 @@
+from __future__ import annotations
+
+import re
+from typing import Any
+
+
+def parse_number_value(value: Any) -> float | None:
+    if isinstance(value, (int, float)):
+        return float(value)
+    text = re.sub(r"[,，\s元￥¥]", "", str(value or ""))
+    match = re.search(r"-?\d+(?:\.\d+)?", text)
+    if not match:
+        return None
+    try:
+        return float(match.group(0))
+    except ValueError:
+        return None
+
+
+def compare_numbers(left: float, right: float, compare: str) -> bool:
+    if compare in {"gt", ">", "greater_than"}:
+        return left > right
+    if compare in {"gte", ">=", "greater_or_equal"}:
+        return left >= right
+    if compare in {"lt", "<", "less_than"}:
+        return left < right
+    if compare in {"lte", "<=", "less_or_equal"}:
+        return left <= right
+    if compare in {"eq", "=", "equals"}:
+        return left == right
+    return left > right
+
+
+def duplicate_text_values(values: list[Any]) -> list[str]:
+    seen: set[str] = set()
+    duplicates: list[str] = []
+    for value in values:
+        items = value if isinstance(value, (list, tuple, set)) else [value]
+        for item in items:
+            text = re.sub(r"\s+", "", str(item or "")).strip().lower()
+            if not text:
+                continue
+            if text in seen and text not in duplicates:
+                duplicates.append(text)
+            seen.add(text)
+    return duplicates