feat: Add isAvailable field to AgentProfile model and DTO for managing agent availability status.

src/agents/dto/create-agent-profile.dto.ts

@@ -5,6 +5,7 @@ import {
   IsInt,
   IsUrl,
   IsUUID,
+  IsBoolean,
   MinLength,
   MaxLength,
   Min,
@@ -131,4 +132,12 @@ export class CreateAgentProfileDto {
   @IsOptional()
   @IsString()
   avatar?: string;
+
+  @ApiPropertyOptional({
+    example: true,
+    description: 'Agent availability status for connect requests',
+  })
+  @IsOptional()
+  @IsBoolean()
+  isAvailable?: boolean;
 }