OpenZombr 0.4.2

Changed

• All targets build in the Swift 6 language mode. Two pre-Sendable Foundation types
  that are documented thread-safe when used the way this codebase uses them — a
  FileManager instance never mutated after creation, a date formatter configured once and
  only read from — are marked nonisolated(unsafe) at their one call site each. No
  concurrency behaviour changes; the compiler now checks the claims the code already made
  in comments, such as IdleTracker's internal locking.

Documentation

• Audit finding 5 is confirmed intentional, not a gap. A parent whose session children
  are a rotating cast of short-lived helpers (sh -c …, curl, leak plumbing) rather than
  one persistent process can never produce a readable CPU idle signal, because
  IdleTracker needs to see the same pid twice. That keeps the parent's session signal
  permanently unreadable, which AGENTS.md already requires the emergency override to
  respect. TransientSessionChildTests pins this down; no behavior changed.