v0.6.0

What's Changed

• feat: 新建 qq-maid-llm crate，迁移完整 LLM 调用链路并移除 rig-core (v0.5.0) by @kuliantnt in #13
• docs: AGENTS.md 新增分支与 PR 策略章节 by @kuliantnt in #15
• chore: 清理已实现的任务文件到 tasks/done/ by @kuliantnt in #16
• fix: RSS 历史回写条目不再补发，保留真实 incident 更新入队 by @kuliantnt in #14
• feat: 用 Markdown 知识 FTS5 检索替换旧世界观和上下文模块 by @kuliantnt in #17
• chore: 清理 .gitignore 失效规则并补全部署产物忽略 by @kuliantnt in #18
• chore: 整理 .env.example，删除死变量和旧兼容变量，精简注释 by @kuliantnt in #19
• chore: 发布 v0.6.0 by @kuliantnt in #20

Full Changelog: v0.4.5...v0.6.0