Twelve Agents. One Resource. Zero Supervision. What Could Possibly Go Wrong? You know that moment when you finally parallelise your agent fleet and watch with pride as twelve subagents sprint off to do the work of a whole team... straight into the same shared resource. Maybe it is the one licensed tool seat. Maybe it is the office coffee machine you told everyone could "handle concurrent requests". Maybe you set a dozen agents loose to find the funniest cat picture on the internet, and they ...