feat: expand MCP tool coverage from 93 to 299 tools

Fork the official gitea-mcp and massively extend API coverage:

- Organization: orgs, members, teams, hooks, blocks, activity (34 tools)
- User: profile, followers, keys, emails, repos, blocks (30 tools)
- Repository: collaborators, webhooks, branch/tag protection, deploy keys,
  topics, git refs/trees/notes, commit status, stars/watchers, forks,
  transfers, mirrors, templates (53 tools)
- Issue: reactions, pins, subscriptions, timeline, templates (16 tools)
- Notifications: list, check, read, repo-scoped (7 tools)
- Settings: API, attachment, repo, UI settings (4 tools)
- Packages: list, get, delete, files, latest, link/unlink (7 tools)
- Miscellaneous: server version, gitignore/label/license templates,
  markdown/markup rendering, node info, signing keys (12 tools)
- Admin: user/org/repo CRUD, system webhooks, cron tasks, unadopted
  repos, emails, badges (23 tools)

Module path updated to git.lethalbits.com/lethalbits/gitea-mcp.

README.zh-cn.md

@@ -41,7 +41,7 @@ Model Context Protocol (MCP) 是一种协议，允许通过聊天界面整合各
 claude mcp add --transport stdio --scope user gitea \
   --env GITEA_ACCESS_TOKEN=token \
   --env GITEA_HOST=https://gitea.com \
-  -- go run gitea.com/gitea/gitea-mcp@latest -t stdio
+  -- go run git.lethalbits.com/lethalbits/gitea-mcp@latest -t stdio
 ```
 
 ### 在 VS Code 中使用
@@ -87,14 +87,14 @@ claude mcp add --transport stdio --scope user gitea \
 
 ### 📥 下载官方二进制版本
 
-可在 [官方 Gitea MCP 二进制版本](https://gitea.com/gitea/gitea-mcp/releases) 下载。
+可在 [官方 Gitea MCP 二进制版本](https://git.lethalbits.com/lethalbits/gitea-mcp/releases) 下载。
 
 ### 🔧 从源码构建
 
 可用 Git 下载源码：
 
 ```bash
-git clone https://gitea.com/gitea/gitea-mcp.git
+git clone https://git.lethalbits.com/lethalbits/gitea-mcp.git
 ```
 
 构建前请先安装：