Added expert field mirror flow

src/request-management/dto/party-otp.dto.ts

@@ -0,0 +1,45 @@
+import { ApiProperty, ApiPropertyOptional } from "@nestjs/swagger";
+import { IsIn, IsNotEmpty, IsOptional, IsString } from "class-validator";
+
+/**
+ * One-at-a-time OTP send for the expert-initiated IN_PERSON flow.
+ * The expert sends an OTP to a single party's phone, collects the code, then
+ * verifies. Repeat for the second party (no invite link is used).
+ */
+export class SendPartyOtpDto {
+  @ApiProperty({
+    description: "Phone number of the party to send the OTP to.",
+    example: "09123456789",
+  })
+  @IsString()
+  @IsNotEmpty()
+  phoneNumber: string;
+}
+
+export class VerifyPartyOtpDto {
+  @ApiProperty({
+    description: "Phone number the OTP was sent to.",
+    example: "09123456789",
+  })
+  @IsString()
+  @IsNotEmpty()
+  phoneNumber: string;
+
+  @ApiProperty({
+    description: "OTP code collected from the party.",
+    example: "123456",
+  })
+  @IsString()
+  @IsNotEmpty()
+  otp: string;
+
+  @ApiPropertyOptional({
+    description:
+      "Which party this phone belongs to. Optional: when omitted, FIRST is bound if it has no user yet, otherwise SECOND (created if missing).",
+    enum: ["FIRST", "SECOND"],
+    example: "FIRST",
+  })
+  @IsOptional()
+  @IsIn(["FIRST", "SECOND"])
+  partyRole?: "FIRST" | "SECOND";
+}