Ryth Azhur a5ef93b879 mizan-webview-transport + webview-channels: VSCode webview as Mizan frontend ...

Two new frontend packages let a VSCode webview consume a Mizan backend
through its postMessage channel — peer transports to `mizan-tauri-transport`
and the default `httpTransport()`.

- `@mizan/webview-transport` implements `MizanTransport` (call/fetch)
  over postMessage with correlation-id pairing. Drop-in for `configure({
  transport: webviewTransport() })`; codegen output and React adapter
  are unchanged.

- `@mizan/webview-channels` mirrors mizan-react's WebSocket-based
  ChannelConnection — RPC + subscribe over the same postMessage channel
  for long-running ops where short request/reply isn't enough.

Both expect an extension-host-side dispatcher that reads envelopes via
`webview.onDidReceiveMessage` and routes them through mizan-ts's
`handleMutationCall` / `handleContextFetch`. First consumer is the
holomorphic VSCode extension.

mizan-codegen: new `[source.script]` generic source. Spawns an arbitrary
command and reads stdout as KDL IR. Keeps mizan-codegen out of the
business of knowing every possible backend language while preserving
the "subprocess emits KDL" contract every other source already follows.
Holomorphic uses it to invoke `python -m holomorphic.emit_ir` against
the mizan_core registry.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

2026-05-25 21:51:12 -04:00

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