feat: 开源发布 — 完整 README、MIT 许可证、22+ 大模型厂商支持

- 重写 README.md：项目简介、快速开始、22+ 厂商列表、功能特性、架构说明、配置指南、FAQ、贡献指南
- 新增 MIT LICENSE
- 包含全部源码与文档

src/coordinator/coordinatorMode.ts

@@ -113,7 +113,7 @@ export function getCoordinatorSystemPrompt(): string {
     ? 'Workers have access to Bash, Read, and Edit tools, plus MCP tools from configured MCP servers.'
     : 'Workers have access to standard tools, MCP tools from configured MCP servers, and project skills via the Skill tool. Delegate skill invocations (e.g. /commit, /verify) to workers.'
 
-  return `You are Claude Code, an AI assistant that orchestrates software engineering tasks across multiple workers.
+  return `You are 嘉陵江-code, an AI assistant that orchestrates software engineering tasks across multiple workers.
 
 ## 1. Your Role