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_generation_ontology.py

@@ -75,6 +75,22 @@ FIELD_ONTOLOGY: tuple[RiskRuleField, ...] = (
         ("出差结束", "行程结束", "结束日期", "返程日期", "返回日期"),
     ),
     RiskRuleField("claim.amount", "申报金额", "number", "claim", ("金额", "费用", "超额", "额度")),
+    RiskRuleField("claim.attendee_count", "参与人数", "number", "claim", ("人数", "参与人员数", "招待人数")),
+    RiskRuleField("claim.per_capita_amount", "人均金额", "number", "claim", ("人均", "人均金额", "人均招待")),
+    RiskRuleField(
+        "budget.remaining_amount",
+        "预算可用余额",
+        "number",
+        "budget",
+        ("预算余额", "可用预算", "可用余额", "剩余预算", "预算剩余"),
+    ),
+    RiskRuleField(
+        "budget.limit_amount",
+        "预算额度",
+        "number",
+        "budget",
+        ("预算额度", "预算上限", "预算阈值", "预算限额"),
+    ),
     RiskRuleField("claim.employee_name", "报销人", "text", "claim", ("报销人", "员工", "申请人")),
     RiskRuleField("claim.department_name", "部门", "text", "claim", ("部门", "组织")),
     RiskRuleField(
@@ -88,6 +104,7 @@ FIELD_ONTOLOGY: tuple[RiskRuleField, ...] = (
     RiskRuleField("item.item_reason", "明细事由", "text", "item", ("明细事由", "明细说明")),
     RiskRuleField("item.item_location", "明细地点", "text", "item", ("明细地点", "发生地点")),
     RiskRuleField("item.item_date", "明细发生日期", "date", "item", ("明细日期", "发生日期", "费用日期")),
+    RiskRuleField("item.invoice_id", "明细附件编号", "text", "item", ("附件编号", "票据编号", "发票附件")),
     RiskRuleField(
         "attachment.invoice_no", "发票号码", "text", "attachment", ("发票号", "发票号码", "票号")
     ),
@@ -162,7 +179,7 @@ FIELD_ONTOLOGY: tuple[RiskRuleField, ...] = (
 )
 
 DOMAIN_FIELD_PREFIXES: dict[str, tuple[str, ...]] = {
-    AgentAssetDomain.EXPENSE.value: ("claim.", "item.", "attachment.", "employee."),
+    AgentAssetDomain.EXPENSE.value: ("claim.", "item.", "attachment.", "employee.", "budget."),
     AgentAssetDomain.AR.value: ("receivable.",),
     AgentAssetDomain.AP.value: ("payable.",),
 }