feat: add agent task schema and CRUD API (closes #96, closes #97)

apps/api/src/agent-tasks/dto/create-agent-task.dto.ts

@@ -0,0 +1,48 @@
+import { AgentTaskStatus, AgentTaskPriority } from "@prisma/client";
+import {
+  IsString,
+  IsOptional,
+  IsEnum,
+  IsObject,
+  MinLength,
+  MaxLength,
+} from "class-validator";
+
+/**
+ * DTO for creating a new agent task
+ */
+export class CreateAgentTaskDto {
+  @IsString({ message: "title must be a string" })
+  @MinLength(1, { message: "title must not be empty" })
+  @MaxLength(255, { message: "title must not exceed 255 characters" })
+  title!: string;
+
+  @IsOptional()
+  @IsString({ message: "description must be a string" })
+  @MaxLength(10000, { message: "description must not exceed 10000 characters" })
+  description?: string;
+
+  @IsOptional()
+  @IsEnum(AgentTaskStatus, { message: "status must be a valid AgentTaskStatus" })
+  status?: AgentTaskStatus;
+
+  @IsOptional()
+  @IsEnum(AgentTaskPriority, { message: "priority must be a valid AgentTaskPriority" })
+  priority?: AgentTaskPriority;
+
+  @IsString({ message: "agentType must be a string" })
+  @MinLength(1, { message: "agentType must not be empty" })
+  agentType!: string;
+
+  @IsOptional()
+  @IsObject({ message: "agentConfig must be an object" })
+  agentConfig?: Record<string, unknown>;
+
+  @IsOptional()
+  @IsObject({ message: "result must be an object" })
+  result?: Record<string, unknown>;
+
+  @IsOptional()
+  @IsString({ message: "error must be a string" })
+  error?: string;
+}