feat: 完善文档中心与报销申请交互及侧边栏重构

后端优化编排器报销查询和本体检测精度，增强报销单草稿保
存和附件回填逻辑，前端重构侧边栏组件支持折叠和图标导
航，完善文档中心状态筛选和详情提示，报销创建和审批详情
页优化会话管理和费用明细交互，新增助手应用服务和预设动
作工具函数，补充单元测试覆盖。

server/src/app/services/expense_claims.py

@@ -143,6 +143,40 @@ class ExpenseClaimService(
         self._attachment_storage = ExpenseClaimAttachmentStorage()
         self._attachment_presentation = ExpenseClaimAttachmentPresentation(self._attachment_storage)
 
+    @staticmethod
+    def _is_expense_application_claim(claim: ExpenseClaim) -> bool:
+        claim_no = str(getattr(claim, "claim_no", "") or "").strip().upper()
+        expense_type = str(getattr(claim, "expense_type", "") or "").strip().lower()
+        document_type = str(
+            getattr(claim, "document_type_code", "")
+            or getattr(claim, "document_type", "")
+            or ""
+        ).strip().lower()
+        return (
+            claim_no.startswith("APP-")
+            or expense_type == "application"
+            or expense_type.endswith("_application")
+            or document_type in {"application", "expense_application"}
+        )
+
+    def _validate_application_claim_for_submission(self, claim: ExpenseClaim) -> list[str]:
+        issues: list[str] = []
+        if self._is_missing_value(claim.employee_name):
+            issues.append("申请人未完善")
+        if self._is_missing_value(claim.department_name):
+            issues.append("所属部门未完善")
+        if self._is_missing_value(claim.expense_type):
+            issues.append("申请类型未完善")
+        if self._is_missing_value(claim.reason):
+            issues.append("申请事由未完善")
+        if self._is_missing_value(claim.location):
+            issues.append("业务地点未完善")
+        if claim.amount is None or claim.amount <= Decimal("0.00"):
+            issues.append("预计总费用未完善")
+        if claim.occurred_at is None:
+            issues.append("申请时间未完善")
+        return issues
+
     def list_claims(self, current_user: CurrentUserContext) -> list[ExpenseClaim]:
         stmt = (
             select(ExpenseClaim)
@@ -389,18 +423,51 @@ class ExpenseClaimService(
 
         self._ensure_draft_claim(claim)
         self._access_policy.backfill_claim_identity_from_current_user(claim, current_user)
-        self._sync_claim_from_items(claim)
-        missing_fields = self._validate_claim_for_submission(claim)
+        is_application_claim = self._is_expense_application_claim(claim)
+        if not is_application_claim:
+            self._sync_claim_from_items(claim)
+        missing_fields = (
+            self._validate_application_claim_for_submission(claim)
+            if is_application_claim
+            else self._validate_claim_for_submission(claim)
+        )
         if missing_fields:
             raise ExpenseClaimSubmissionBlockedError(missing_fields)
 
         before_json = self._serialize_claim(claim)
-        review_result = self._run_ai_submission_review(claim)
+        if is_application_claim:
+            submitted_at = datetime.now(UTC)
+            preserved_flags = [
+                flag
+                for flag in list(claim.risk_flags_json or [])
+                if not (
+                    isinstance(flag, dict)
+                    and str(flag.get("source") or "").strip() in {"submission_review", "attachment_analysis"}
+                )
+            ]
+            submit_flag = {
+                "source": "application_submission",
+                "event_type": "expense_application_submission",
+                "severity": "info",
+                "label": "申请提交",
+                "message": "费用申请已提交至直属领导审批，并同步纳入预算管理口径。",
+                "previous_status": str(claim.status or "").strip(),
+                "previous_approval_stage": str(claim.approval_stage or "").strip(),
+                "next_status": "submitted",
+                "next_approval_stage": "直属领导审批",
+                "created_at": submitted_at.isoformat(),
+            }
+            claim.status = "submitted"
+            claim.approval_stage = "直属领导审批"
+            claim.risk_flags_json = [*preserved_flags, submit_flag]
+            claim.submitted_at = submitted_at
+        else:
+            review_result = self._run_ai_submission_review(claim)
 
-        claim.status = str(review_result.get("status") or "supplement")
-        claim.approval_stage = str(review_result.get("approval_stage") or "待补充")
-        claim.risk_flags_json = list(review_result.get("risk_flags") or [])
-        claim.submitted_at = datetime.now(UTC) if claim.status == "submitted" else None
+            claim.status = str(review_result.get("status") or "supplement")
+            claim.approval_stage = str(review_result.get("approval_stage") or "待补充")
+            claim.risk_flags_json = list(review_result.get("risk_flags") or [])
+            claim.submitted_at = datetime.now(UTC) if claim.status == "submitted" else None
 
         self.db.commit()
         self.db.refresh(claim)
@@ -562,19 +629,29 @@ class ExpenseClaimService(
 
         normalized_status = str(claim.status or "").strip().lower()
         if normalized_status != "submitted":
-            raise ValueError("只有审批中的报销单可以审批通过。")
+            raise ValueError("只有审批中的单据可以审批通过。")
 
         previous_stage = str(claim.approval_stage or "").strip()
+        is_application_claim = self._is_expense_application_claim(claim)
         if previous_stage == "直属领导审批":
             if not self._access_policy.can_approve_claim(current_user, claim):
-                raise ValueError("只有当前直属领导审批人可以审批通过该报销单。")
+                raise ValueError("只有当前直属领导审批人可以审批通过该单据。")
             approval_source = "manual_approval"
-            event_type = "expense_claim_approval"
-            label = "领导审批通过"
-            next_status = "submitted"
-            next_stage = "财务审批"
-            default_message = "{operator} 已审批通过，流转至{next_stage}。"
+            if is_application_claim:
+                event_type = "expense_application_approval"
+                label = "领导审批通过"
+                next_status = "approved"
+                next_stage = "审批完成"
+                default_message = "{operator} 已审批通过，申请流程完成。"
+            else:
+                event_type = "expense_claim_approval"
+                label = "领导审批通过"
+                next_status = "submitted"
+                next_stage = "财务审批"
+                default_message = "{operator} 已审批通过，流转至{next_stage}。"
         elif previous_stage == "财务审批":
+            if is_application_claim:
+                raise ValueError("费用申请无需财务审批，直属领导审批通过后即完成。")
             if not self._access_policy.can_approve_claim(current_user, claim):
                 raise ValueError("只有财务人员可以完成财务终审。")
             approval_source = "finance_approval"
@@ -606,7 +683,7 @@ class ExpenseClaimService(
             ],
             "previous_status": str(claim.status or "").strip(),
             "previous_approval_stage": previous_stage,
-            "next_status": "submitted",
+            "next_status": next_status,
             "next_approval_stage": next_stage,
             "created_at": datetime.now(UTC).isoformat(),
         }