v2.4.1 — the core, decomposed to the mantra

[2.4.1] - 2026-08-26

Changed

• The core, decomposed to the mantra: connection.ts 2,614 → 992 lines.
  Phase two of the split — composed units, not just moved leaves. The
  runtime now composes KindGovernor, SurfaceBoard, and
  TransitionLedger as owned fields (the ecosystem rule: compose a store
  as a field, no base classes), and the ~740-line heart of connect()
  moved behind a spelled-out seam: ConnectionCore lists every capability
  the builder may use, so a capability not listed is one provably unused.
  The closure web inside the builder stays together BY DESIGN — it shares
  per-connection state, and splitting it would mean turning shared locals
  into a context object: a rewrite wearing a refactor's clothes. Verbatim
  behaviour, all 3,033 tests green, the React treeshake boundary and byte
  cap unchanged.