Brand OTP SMS with business name and support local SMS proxy.

Append tenant Farsi name to verification SMS, allow optional domain on send-otp, and add SMS_PROXY_* for local delivery via production. Also include websites SSL sync agent/API wiring.

Co-authored-by: Cursor <cursoragent@cursor.com>

src/auth/dto/send-otp.dto.ts

@@ -1,4 +1,4 @@
-import { IsString, Matches } from 'class-validator';
+import { IsOptional, IsString, Matches, MaxLength } from 'class-validator';
 
 export class SendOtpDto {
   @IsString()
@@ -6,4 +6,10 @@ export class SendOtpDto {
     message: 'cellNumber must be in E.164 format (e.g. +989121234567)',
   })
   cellNumber!: string;
+
+  /** Tenant host/apex (e.g. sanihome.ir or business.sanihome.ir) — used to brand OTP SMS. */
+  @IsOptional()
+  @IsString()
+  @MaxLength(253)
+  domain?: string;
 }