- Call kill_stack_processes() at the beginning of bootstrap()
- Add port-based killing using fuser for ports 8200, 5432, 9000, etc.
- Use -f (pattern match) instead of -x (exact) for process names
- Fix process names: 'vault server', 'llama-server' instead of 'vault', 'ollama'
- Increase wait time to 1 second for processes to terminate
This fixes issues on dev machines where old processes from a deleted
stack are still running and blocking ports.