Give concurrent Ghidra and Hopper callers independent waits over one owned startup. Join final-caller cleanup, preserve failed cleanup owners, and derive readiness from the current startup result and live transport. Distinguish provider closure from caller cancellation and clean up interrupted final lineage observation.
Reuse the Ghidra socket fixture, replace stale cancellation health assertions with cold and warm reuse controls, and cover public MCP peer cancellation. Validation: 315 affected tests, build, typecheck, lint, docs, and 25 relocated startup controls passed. Controlled child bridges only; real Ghidra JVM and Hopper GUI verification remains unperformed. Refs #3983, #4227, #4274.
morluto
ca7ee018b2