chore(legacy): relocate v1 dataconnect source

legacy/dataconnect-v1/schema/staffDocument.gql

@@ -0,0 +1,35 @@
+enum DocumentStatus {
+  PENDING
+  PROCESSING
+  AUTO_PASS
+  AUTO_FAIL
+  NEEDS_REVIEW
+  APPROVED
+  REJECTED
+  ERROR
+  UPLOADED
+  EXPIRING
+  MISSING
+  VERIFIED
+}
+
+type StaffDocument @table(name: "staff_documents", key: ["staffId", "documentId"]) {
+  id: UUID! @default(expr: "uuidV4()")
+  staffId: UUID!
+  staffName: String!
+  documentId: UUID!
+  document: Document! @ref(fields: "documentId", references: "id")
+  
+  status: DocumentStatus! @default(expr: "'PENDING'")
+  documentUrl: String
+  expiryDate: Timestamp
+
+  # Verification Metadata (Align with Attire flow)
+  verificationId: String
+  verifiedAt: Timestamp
+  rejectionReason: String
+
+  createdAt: Timestamp @default(expr: "request.time")
+  updatedAt: Timestamp @default(expr: "request.time")
+  createdBy: String
+}