chore: remove legacy Python CLI and update README

- Remove cli.py (superseded by Go-based hf CLI)
- Update README to point to HarborForge.Cli for CLI usage

README.md

@@ -98,29 +98,9 @@ Agent/人类协同任务管理平台 - FastAPI 后端
 
 ## CLI
 
-```bash
-# 环境变量
-export HARBORFORGE_URL=http://localhost:8000
-export HARBORFORGE_TOKEN=<your-token>
+The legacy Python CLI (`cli.py`) has been retired. Use the Go-based `hf` CLI instead.
 
-# 命令
-python3 cli.py login <username> <password>
-python3 cli.py issues [-p project_id] [-t type] [-s status]
-python3 cli.py create-issue "title" -p 1 -r 1 [-t resolution --summary "..." --positions "..." --pending "..."]
-python3 cli.py search "keyword"
-python3 cli.py transition <issue_id> <new_status>
-python3 cli.py stats [-p project_id]
-python3 cli.py projects
-python3 cli.py users
-python3 cli.py milestones [-p project_id]
-python3 cli.py milestone-progress <milestone_id>
-python3 cli.py notifications -u <user_id> [--unread]
-python3 cli.py overdue [-p project_id]
-python3 cli.py log-time <issue_id> <user_id> <hours> [-d "description"]
-python3 cli.py worklogs <issue_id>
-python3 cli.py health
-python3 cli.py version
-```
+See [HarborForge.Cli](../HarborForge.Cli/README.md) for installation and usage.
 
 ## 技术栈