Live deploy console: stream compose up output to the browser (0.22.0)

Deploying a local stack from the editor now opens a console modal that streams
the `docker compose up -d` output (image pulls, container creation) live over a
new `/ws/deploy/{stack_id}` WebSocket, replacing the blind "Deploying…" spinner.
The compose subprocess keeps running server-side if the modal is closed early;
the same audit entry + start/error notification as the REST start path is recorded.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

README.md

@@ -23,6 +23,9 @@ as intuitive as Dockge, as capable as Portainer for Compose workflows.
 - **Live status** — running / partial / stopped / error / updating, computed from
   Docker container labels.
 - **Real-time logs** — streamed over WebSocket, color-coded per service.
+- **Live deploy console** — deploying from the editor streams `compose up`
+  output (image pulls, container creation) over a WebSocket in real time instead
+  of a blind spinner; the deploy keeps running server-side if the modal is closed.
 - **Monaco editor** — YAML editing with an `.env` tab and a **`docker run` →
   compose** converter.
 - **Dashboard** — system resource bar, stack grid with quick actions, and a