Require explicit behavior selection on spawn, expose randomized actor references, and add named REPL bindings, completion, history navigation, and protocol v2 routing.
Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
Implement typed, budgeted Rune invocation slices and a minimal in-memory actor runtime with bounded mailboxes, state transitions, effects, and lifecycle operations. Add feasibility and runtime documentation with tests for async resumption, cancellation, and scheduler fairness.
Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>