#2962 lays the ground work of adding additional logic to the overseer, such that certain properties can be detected at compile time:

Chores:

• [overseer] remove AllSubsystems and proc-macro AllSubsystemGen #3773
• create a more rigid builder pattern, that fails at compile time, rather than runtime (current) #3772
  • overseer: add closure as subsystem init method #3771
• Remove the focus() method and streamline the incoming information flow
• Handle where clauses for baggage generics

Significant enhancements:

• [overseer] annotate subsystems with outgoing messages #3774
  • [overseer] check for circular communication structures between subsystems #3825
  • [overseer] draw a graphviz chart of the subsystem connection #3826
  • inject a unbounded channel into each cycle, to prevent potential dead-locks until there is a more systematic approach with prioritization #5426