Integrate `websocket-stream` to handle MQTT broker upgrades in the
CLI and add granular connection status tracking to the UI.
- Add `websocket-stream` dependency
- Update CLI to use `websocket-stream` for socket upgrades
- Enhance `journalStream` store with `connectionStatus` and
`connectionError` states
- Add visual connection status indicators to `App` and `JournalPanel`
Implement a robust journal system featuring a type-safe message
registry and an MQTT-backed stream store.
- Add `registry.ts` to manage message type definitions, Zod schemas,
and custom reducers.
- Implement `journalStream.ts` to manage MQTT connections, session
lifecycle, and reactive message state.
- Add built-in message types for `narrative`, `intent`, `roll`,
and `article`.
- Provide utilities for message validation, optimistic local updates,
and message reversion.
hypercross