feat: 新增预算中心本体与风险规则评分回填

后端新增预算本体解析模块和风险规则评分回填服务，优化规则
生成本体对齐和提示词构建，增强费用类型关键词和本体验证，
完善报销查询和审计接口，前端预算中心页面增加对话框和本
体工具函数，重构审计页面元数据和视图模型，补充单元测试。

server/src/app/schemas/agent_asset.py

@@ -112,6 +112,11 @@ class AgentAssetRuleJsonRead(BaseModel):
 
 class AgentAssetRiskRuleGenerateRequest(BaseModel):
     business_domain: AgentAssetDomain = AgentAssetDomain.EXPENSE
+    business_stage: str | None = Field(
+        default="reimbursement",
+        pattern="^(expense_application|reimbursement)$",
+        max_length=40,
+    )
     expense_category: str | None = Field(default=None, max_length=40)
     rule_title: str | None = Field(default=None, max_length=80)
     risk_level: str | None = Field(default=None, pattern="^(low|medium|high|critical)$")

server/src/app/schemas/ontology.py

@@ -8,6 +8,7 @@ OntologyScenario = Literal[
     "expense",
     "accounts_receivable",
     "accounts_payable",
+    "budget",
     "knowledge",
     "unknown",
 ]