feat: 添加四个分类专家Agent定义

定义correctness、security、reliability、maintainability四个领域专家的focus prompt配置

Ultraworked with [Sisyphus](https://github.com/code-yeongyu/oh-my-opencode)

Co-authored-by: Sisyphus <clio-agent@sisyphuslabs.ai>

src/review/agents/correctness-agent.ts

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+import OpenAI from 'openai';
+import { SpecialistAgent } from './specialist-agent';
+import { ToolRegistry } from '../tools/registry';
+import type { LearningSystem } from '../learning/learning-system';
+
+export class CorrectnessAgent extends SpecialistAgent {
+  constructor(openai: OpenAI, model: string, toolRegistry?: ToolRegistry, learningSystem?: LearningSystem) {
+    super(openai, model, 'correctness', 'Correctness Agent', '业务逻辑正确性、边界条件、空值处理和明显bug', toolRegistry, learningSystem);
+  }
+}

src/review/agents/maintainability-agent.ts

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+import OpenAI from 'openai';
+import { SpecialistAgent } from './specialist-agent';
+import { ToolRegistry } from '../tools/registry';
+import type { LearningSystem } from '../learning/learning-system';
+
+export class MaintainabilityAgent extends SpecialistAgent {
+  constructor(openai: OpenAI, model: string, toolRegistry?: ToolRegistry, learningSystem?: LearningSystem) {
+    super(openai, model, 'maintainability', 'Maintainability Agent', '可维护性、复杂度、接口破坏风险和可测试性不足', toolRegistry, learningSystem);
+  }
+}

src/review/agents/reliability-agent.ts

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+import OpenAI from 'openai';
+import { SpecialistAgent } from './specialist-agent';
+import { ToolRegistry } from '../tools/registry';
+import type { LearningSystem } from '../learning/learning-system';
+
+export class ReliabilityAgent extends SpecialistAgent {
+  constructor(openai: OpenAI, model: string, toolRegistry?: ToolRegistry, learningSystem?: LearningSystem) {
+    super(openai, model, 'reliability', 'Reliability Agent', '错误处理、重试策略、幂等性、并发一致性和资源释放', toolRegistry, learningSystem);
+  }
+}

src/review/agents/security-agent.ts

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+import OpenAI from 'openai';
+import { SpecialistAgent } from './specialist-agent';
+import { ToolRegistry } from '../tools/registry';
+import type { LearningSystem } from '../learning/learning-system';
+
+export class SecurityAgent extends SpecialistAgent {
+  constructor(openai: OpenAI, model: string, toolRegistry?: ToolRegistry, learningSystem?: LearningSystem) {
+    super(openai, model, 'security', 'Security Agent', '注入漏洞、权限绕过、敏感信息泄露、反序列化和输入校验缺失', toolRegistry, learningSystem);
+  }
+}