updated docs

docs/data/en/managed.md

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+# Managed Room
+
+A managed room wraps an existing application. Soleprint runs alongside it, providing tools and a sidebar without touching the app's source code.
+
+## Structure
+
+```
+gen/myroom/
+  myapp/          # The app (cloned repos + Docker)
+  link/           # DB bridge (FastAPI adapter)
+  soleprint/      # Soleprint instance
+```
+
+## Wrapping mechanism
+
+Nginx `sub_filter` injects sidebar CSS and JS into the app's HTML `</head>` tag. The app serves normally — soleprint attaches from the outside.
+
+![Wrapping](../graphs/wrapping.svg)
+
+## config.json
+
+A managed room adds these fields to `config.json`:
+
+- `managed.name` — the app name
+- `managed.repos.backend` — backend repository
+- `managed.repos.frontend` — frontend repository
+
+## Sidebar
+
+Loads from `/spr/sidebar.js` and `/spr/sidebar.css`, configured via `/api/sidebar/config`.
+
+The sidebar is generic at runtime. All customization comes from `config.json`.
+
+## Hosts
+
+Add to `/etc/hosts`:
+
+```
+127.0.0.1  myroom.spr.local.ar  myroom.local.ar
+```