bitruntime v0.2.0

bitruntime v0.2.0

The runtime path that hand-written adapters use, in Go and TypeScript, over
the public bitwire 0.3.0 contract, speaking the protocol revision
bitwire/1:

• core: the structural core of v0.1.0 (trees, selection, decomposition,
  derived sending); the addressed operators At/at, Mount/mount and
  Forward/forward; the local pair; the public invocation lifecycle.
• transports: the frame transport seam, the in-memory pipe and WebSocket,
  with one closed classification and a sendable/observe-only split of close
  codes.
• engine: the bitwire/1 peer over any transport and WebSocket connection
  setup (Accept, NewHandler, Dial; Peer.connect, Peer.attach).
• dispatch: the dispatcher and the Call, Emit, Handle and Register
  helpers (call, emit, handle, register, onEvent).

It is ported from nightseam v0.6.0 (5cc9723), with provenance in NOTICE and
every change in the port record. nightseam's recorded
defects in this path are fixed rather than ported: queued refusals are answered
when a pair closes (nightseam#722), a pair's pending slot is free before its
caller holds the answer (nightseam#658), ended carriers answer disconnected,
observe-only close codes are never sent, a forwarder fails only a refused
message, and a closing peer's code reaches the far side.

Evidence

• bitwire/1 is unchanged: bitruntime interoperates with nightseam v0.6.0 in
  every pairing of Go and TypeScript over real WebSockets, and sends the same
  bytes (node scripts/interop.mjs). The envelope tables of v0.6.0 are held by
  a running peer of each role.
• bitwire's independent cases, run from bitwire's own test-only module against
  this release: lifecycle, composition groups, declared composites (reference
  realization; production gaps recorded) and trees, over the local pair and
  WebSockets in both directions.
• The v0.6.0 Go and TypeScript test suites, ported with their expectations.

Coordinates. Go: module github.com/Bitspark/bitruntime at the v0.2.0
tag, packages core/go, transports/go, transports/websocket/go,
engine/go, engine/websocket/go and dispatch/go. TypeScript: the package
@bitspark/bitruntime 0.2.0 with the subpaths /core, /transports,
/engine and /dispatch, published as this release's tarball with a SHA-256
checksum; it replaces @bitspark/bitruntime-core and is not published to an
npm registry.

Not in this release: live references, tunnels, the framed byte stream
bitwire-stream/1, observation and tracing hooks, authentication integration,
and received-context evidence as a contract field, which awaits a later
bitwire revision.