refactor: 移除 Team 和 Swarm 协作功能

功能论证结论：Team（团队）和 Swarm（协作）为零后端支持的
纯前端 localStorage 空壳，Pipeline 系统已完全覆盖其全部能力。

删除 16 个文件，约 7,950 行代码：
- 5 个组件：TeamCollaborationView, TeamOrchestrator, TeamList, DevQALoop, SwarmDashboard
- 1 个 Store：teamStore.ts
- 3 个 Client/库：team-client.ts, useTeamEvents.ts, agent-swarm.ts
- 1 个类型文件：team.ts
- 4 个测试文件
- 1 个文档（归档 swarm-coordination.md）

修改 4 个文件：
- Sidebar.tsx：移除"团队"和"协作"导航项
- App.tsx：移除 team/swarm 视图路由
- types/index.ts：移除 team 类型导出
- chatStore.ts：移除 dispatchSwarmTask 方法

更新 CHANGELOG.md 和功能文档 README.md

desktop/src/store/chatStore.ts

@@ -4,7 +4,6 @@ import type { AgentStreamDelta } from '../lib/gateway-client';
 import { getClient } from './connectionStore';
 import { intelligenceClient } from '../lib/intelligence-client';
 import { getMemoryExtractor } from '../lib/memory-extractor';
-import { getAgentSwarm } from '../lib/agent-swarm';
 import { getSkillDiscovery } from '../lib/skill-discovery';
 import { useOfflineStore, isOffline } from './offlineStore';
 import { useConnectionStore } from './connectionStore';
@@ -98,7 +97,6 @@ interface ChatState {
   newConversation: () => void;
   switchConversation: (id: string) => void;
   deleteConversation: (id: string) => void;
-  dispatchSwarmTask: (description: string, style?: 'sequential' | 'parallel' | 'debate') => Promise<string | null>;
   searchSkills: (query: string) => { results: Array<{ id: string; name: string; description: string }>; totalAvailable: number };
 }
 
@@ -545,39 +543,6 @@ export const useChatStore = create<ChatState>()(
     }
   },
 
-  dispatchSwarmTask: async (description: string, style?: 'sequential' | 'parallel' | 'debate') => {
-    try {
-      const swarm = getAgentSwarm();
-      const task = swarm.createTask(description, {
-        communicationStyle: style || 'parallel',
-      });
-
-      // Set up executor that uses the connected client
-      swarm.setExecutor(async (agentId: string, prompt: string, context?: string) => {
-        const client = getClient();
-        const fullPrompt = context ? `${context}\n\n${prompt}` : prompt;
-        const result = await client.chat(fullPrompt, { agentId: agentId.startsWith('clone_') ? undefined : agentId });
-        return result?.response || '(无响应)';
-      });
-
-      const result = await swarm.execute(task);
-
-      // Add swarm result as assistant message
-      const swarmMsg: Message = {
-        id: `swarm_${Date.now()}`,
-        role: 'assistant',
-        content: result.summary || '协作任务完成',
-        timestamp: new Date(),
-      };
-      get().addMessage(swarmMsg);
-
-      return result.task.id;
-    } catch (err) {
-      log.warn('Swarm dispatch failed:', err);
-      return null;
-    }
-  },
-
   searchSkills: (query: string) => {
     const discovery = getSkillDiscovery();
     const result = discovery.searchSkills(query);