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/services/risk_rule_generation.py

@@ -22,6 +22,7 @@ from app.services.risk_rule_flow_diagram import (
 from app.services.risk_rule_generation_ontology import (
     BUSINESS_DOMAIN_LABELS,
     DOMAIN_FIELD_PREFIXES,
+    EXPENSE_BUSINESS_STAGE_LABELS,
     EXPENSE_RISK_CATEGORY_ALIASES,
     EXPENSE_RISK_CATEGORY_LABELS,
     FIELD_ONTOLOGY,
@@ -75,6 +76,8 @@ class RiskRuleGenerationService:
             raise ValueError("规则标题至少需要 2 个字。")
 
         requires_attachment = bool(body.requires_attachment)
+        business_stage = self._normalize_business_stage(body.business_stage, domain)
+        business_stage_label = EXPENSE_BUSINESS_STAGE_LABELS.get(business_stage, "费用报销")
         expense_category = self._normalize_expense_category(body.expense_category, domain)
         expense_category_label = EXPENSE_RISK_CATEGORY_LABELS.get(expense_category or "", "")
 
@@ -83,6 +86,8 @@ class RiskRuleGenerationService:
         draft = self._compile_with_model(
             natural_language=natural_language,
             domain=domain,
+            business_stage=business_stage,
+            business_stage_label=business_stage_label,
             expense_category=expense_category,
             expense_category_label=expense_category_label,
             fields=fields,
@@ -113,6 +118,8 @@ class RiskRuleGenerationService:
             draft,
             natural_language=natural_language,
             domain=domain,
+            business_stage=business_stage,
+            business_stage_label=business_stage_label,
             expense_category=expense_category,
             expense_category_label=expense_category_label,
             risk_level=risk_level,
@@ -155,6 +162,8 @@ class RiskRuleGenerationService:
                 "requires_attachment": requires_attachment,
                 "tag": "风险规则",
                 "detail_mode": "json_risk",
+                "business_stage": business_stage,
+                "business_stage_label": business_stage_label,
                 "expense_category": expense_category,
                 "expense_category_label": expense_category_label,
                 "risk_category": payload.get("risk_category"),
@@ -167,6 +176,11 @@ class RiskRuleGenerationService:
                 "evaluator": payload.get("evaluator"),
                 "generated_by": "natural_language",
                 "source_ref": "自然语言风险规则",
+                "last_operation": {
+                    "action": "create",
+                    "actor": actor,
+                    "at": datetime.now(UTC).isoformat(),
+                },
             },
         )
         self.db.add(asset)
@@ -192,6 +206,7 @@ class RiskRuleGenerationService:
                 "risk_level": risk_level,
                 "risk_score": risk_score["score"],
                 "domain": domain,
+                "business_stage": business_stage,
                 "expense_category": expense_category,
                 "requires_attachment": requires_attachment,
             },
@@ -205,6 +220,8 @@ class RiskRuleGenerationService:
         *,
         natural_language: str,
         domain: str,
+        business_stage: str,
+        business_stage_label: str,
         expense_category: str | None,
         expense_category_label: str,
         fields: list[RiskRuleField],
@@ -221,6 +238,8 @@ class RiskRuleGenerationService:
         messages = build_risk_rule_compiler_messages(
             domain=domain,
             domain_label=BUSINESS_DOMAIN_LABELS[domain],
+            business_stage=business_stage,
+            business_stage_label=business_stage_label,
             expense_category=expense_category,
             expense_category_label=expense_category_label,
             natural_language=natural_language,
@@ -372,6 +391,8 @@ class RiskRuleGenerationService:
         *,
         natural_language: str,
         domain: str,
+        business_stage: str,
+        business_stage_label: str,
         expense_category: str | None,
         expense_category_label: str,
         risk_level: str,
@@ -408,6 +429,8 @@ class RiskRuleGenerationService:
             "field_keys": field_keys,
             "condition_summary": condition_summary,
             "natural_language": natural_language,
+            "business_stage": business_stage,
+            "business_stage_label": business_stage_label,
         }
         semantic_type = str(draft.get("semantic_type") or "").strip()
         if semantic_type:
@@ -431,6 +454,8 @@ class RiskRuleGenerationService:
             params["keywords"] = keywords
             params["search_fields"] = field_keys
         applies_to: dict[str, Any] = {"domains": [domain]}
+        if business_stage:
+            applies_to["business_stages"] = [business_stage]
         if expense_category:
             applies_to["expense_categories"] = [expense_category]
 
@@ -485,6 +510,8 @@ class RiskRuleGenerationService:
                 "rule_title": rule_title,
                 "expense_category": expense_category,
                 "expense_category_label": expense_category_label,
+                "business_stage": business_stage,
+                "business_stage_label": business_stage_label,
                 "natural_language": natural_language,
                 "business_explanation": self._clean_text(draft.get("description")),
                 "condition_summary": condition_summary,
@@ -558,6 +585,19 @@ class RiskRuleGenerationService:
             raise ValueError(f"费用领域仅支持：{allowed}。")
         return normalized
 
+    @staticmethod
+    def _normalize_business_stage(value: str | None, domain: str) -> str:
+        if domain != AgentAssetDomain.EXPENSE.value:
+            return "reimbursement"
+
+        normalized = str(value or "reimbursement").strip().lower()
+        if not normalized:
+            normalized = "reimbursement"
+        if normalized not in EXPENSE_BUSINESS_STAGE_LABELS:
+            allowed = "、".join(EXPENSE_BUSINESS_STAGE_LABELS.values())
+            raise ValueError(f"业务环节仅支持：{allowed}。")
+        return normalized
+
     def _resolve_fields(self, text: str, *, domain: str) -> list[RiskRuleField]:
         prefixes = DOMAIN_FIELD_PREFIXES.get(domain, ())
         candidates = [field for field in FIELD_ONTOLOGY if field.key.startswith(prefixes)]