[BUG] Running under Github workflow is not loading the environment key correctly

Question

## Environment
- Platform (select one):
  - [X] Anthropic API
- https://github.com/kaihendry/UK_weather_MCP/blob/main/.github/workflows/claude.yml 
## Bug Description
https://github.com/kaihendry/UK_weather_MCP/actions/runs/16833567787/job/47687184285

## Expected Behavior

[DEBUG] Bash tool invoked with command: export MET_OFFICE_API_KEY="*****" && python -c "

## Actual Behavior

[DEBUG] Bash tool invoked with command: export MET_OFFICE_API_KEY="demo_key" && python -c "