Connect a coding tool

Connect Claude Code to the Yugos API, then confirm it works.

Facts:
- Yugos is a model router with an OpenAI-compatible API. Base URL: https://api.yugos.ai/v1
- Model ID: yugos (Yugos picks a model for each request)
- The key is in YUGOS_API_KEY. Never print it, paste it into a file I commit, or ask me to paste it here.
- Text and function tools work. Keep image options off.

Steps. Show each command and stop at the first failure:
1. Check the key is set: test -n "$YUGOS_API_KEY" && echo set || echo missing
   If it's missing, stop and tell me to create a key at https://www.yugos.ai/console/keys and run: export YUGOS_API_KEY="<my key>"
2. Check the key works: curl -s -o /dev/null -w "%{http_code}\n" https://api.yugos.ai/v1/models -H "Authorization: Bearer $YUGOS_API_KEY"
   Expect 200. If not, stop and show me the status.
3. Install the launcher with these commands, showing their output:
mkdir -p "$HOME/.local/bin"
curl --fail --show-error --location "https://www.yugos.ai/setup/yugos-clients.py" -o "$HOME/.local/bin/claude-yugo"
chmod 755 "$HOME/.local/bin/claude-yugo"
export PATH="$HOME/.local/bin:$PATH"
claude-yugo --check
4. Tell me to start new sessions with claude-yugo. Don't change my Claude Code settings.

When you're done, tell me how to confirm it: claude-yugo --check confirms the key and model ID.
Back up any config file before changing it, and don't change anything else.