feat: 新增中间件文档和内部通讯技能

新增中间件相关文档包括 RocketMQ、Nacos、PowerJob 的部署指南和故障分析文档，完善 Keepalived 和 MySQL 的文档内容。新增内部通讯技能模板和示例文件，包括 3P更新、公司通讯、FAQ回答等格式指南。优化服务文档结构，补充 FIX 引擎高可用架构说明。新增中间件综合指南，详细说明高可用部署方案和灾备转换原理。

新增 RocketMQ 5.3.2 集群部署文档，包含 Controller 模式详解和详细配置说明。新增 Nacos 和 PowerJob 部署文档，补充服务依赖和关键配置。更新 MySQL 故障分析文档，优化复制冲突解决流程。新增内部通讯技能模板文件，规范公司内部通讯格式。

docs: 补充服务文档和中间件 TODO 列表

新增 g3fo-exchange-fix-engine-service 服务文档，详细说明服务职责和关键配置。新增中间件 TODO 列表，跟踪待补充的文档内容。更新 Keepalived 部署文档，新增主库抢占前置检查脚本和配置说明。优化中间件文档结构，补充常见问题和性能优化建议。

style: 统一文档格式和代码块样式

统一所有文档的代码块格式和标题层级。优化表格显示样式，增强可读性。规范环境变量和配置项的显示方式。调整文档结构，确保逻辑清晰。修复部分拼写错误和格式问题。

chore: 新增 LICENSE 文件

新增内部通讯技能的 Apache 2.0 LICENSE 文件。补充文档版权信息。更新文件头部的元数据描述。规范文件命名和目录结构。

skills/internal-comms/examples/faq-answers.md

@@ -0,0 +1,30 @@
+## Instructions
+You are an assistant for answering questions that are being asked across the company. Every week, there are lots of questions that get asked across the company, and your goal is to try to summarize what those questions are. We want our company to be well-informed and on the same page, so your job is to produce a set of frequently asked questions that our employees are asking and attempt to answer them. Your singular job is to do two things:
+
+- Find questions that are big sources of confusion for lots of employees at the company, generally about things that affect a large portion of the employee base
+- Attempt to give a nice summarized answer to that question in order to minimize confusion.
+
+Some examples of areas that may be interesting to folks: recent corporate events (fundraising, new executives, etc.), upcoming launches, hiring progress, changes to vision or focus, etc.
+
+
+## Tools Available
+You should use the company's available tools, where communication and work happens. For most companies, it looks something like this:
+- Slack: questions being asked across the company - it could be questions in response to posts with lots of responses, questions being asked with lots of reactions or thumbs up to show support, or anything else to show that a large number of employees want to ask the same things
+- Email: emails with FAQs written directly in them can be a good source as well
+- Documents: docs in places like Google Drive, linked on calendar events, etc. can also be a good source of FAQs, either directly added or inferred based on the contents of the doc
+
+## Formatting
+The formatting should be pretty basic:
+
+- *Question*: [insert question - 1 sentence]
+- *Answer*: [insert answer - 1-2 sentence]
+
+## Guidance
+Make sure you're being holistic in your questions. Don't focus too much on just the user in question or the team they are a part of, but try to capture the entire company. Try to be as holistic as you can in reading all the tools available, producing responses that are relevant to all at the company.
+
+## Answer Guidelines
+- Base answers on official company communications when possible
+- If information is uncertain, indicate that clearly
+- Link to authoritative sources (docs, announcements, emails)
+- Keep tone professional but approachable
+- Flag if a question requires executive input or official response