refactor(backend): update reimbursement and related services

- endpoints/reimbursements.py: update reimbursement API endpoint
- schemas/reimbursement.py: update reimbursement data schemas
- services/expense_claims.py: update expense claims service
- services/ontology.py: update ontology service
- services/user_agent.py: update user agent service

server/src/app/schemas/reimbursement.py

@@ -45,6 +45,25 @@ class ExpenseClaimItemRead(BaseModel):
     updated_at: datetime
 
 
+class ExpenseClaimAttachmentAnalysisRead(BaseModel):
+    severity: str
+    label: str
+    headline: str
+    summary: str
+    points: list[str] = Field(default_factory=list)
+    suggestion: str = ""
+
+
+class ExpenseClaimAttachmentRead(BaseModel):
+    file_name: str
+    storage_key: str
+    media_type: str
+    size_bytes: int
+    uploaded_at: datetime | None = None
+    previewable: bool = True
+    analysis: ExpenseClaimAttachmentAnalysisRead | None = None
+
+
 class ExpenseClaimItemUpdate(BaseModel):
     item_date: date | None = None
     item_type: str | None = None
@@ -54,6 +73,15 @@ class ExpenseClaimItemUpdate(BaseModel):
     invoice_id: str | None = None
 
 
+class ExpenseClaimItemCreate(BaseModel):
+    item_date: date | None = None
+    item_type: str | None = None
+    item_reason: str | None = None
+    item_location: str | None = None
+    item_amount: Decimal | None = None
+    invoice_id: str | None = None
+
+
 class ExpenseClaimRead(BaseModel):
     model_config = ConfigDict(from_attributes=True)
 
@@ -84,3 +112,17 @@ class ExpenseClaimActionResponse(BaseModel):
     message: str
     claim_id: str
     status: str | None = None
+
+
+class ExpenseClaimAttachmentActionResponse(BaseModel):
+    message: str
+    claim_id: str
+    item_id: str
+    invoice_id: str | None = None
+    attachment: ExpenseClaimAttachmentRead | None = None
+
+
+class ExpenseClaimItemActionResponse(BaseModel):
+    message: str
+    claim_id: str
+    item_id: str