multistreaming: scenes/composition, installer build support, service updates

- multistreaming (new): RTMP ingest + multi-platform fan-out with pluggable providers (Twitch/YouTube/Kick/custom), zero-knowledge key vaults, Authelia OIDC auth, shared rooms with editor/streamer roles, single-use invites, per-account streaming grants, and scenes & composition (grid/PiP layouts, text/image overlays, per-output audio routing).
- installer: support Dockerfile build in metadata (not just image) and RSA key generation for the Authelia OIDC JWKS.
- authelia: add OIDC provider with portainer + multistreaming clients (public + PKCE).
- services: remove allprox; add nginx-proxy-manager and portainer; update lldap; regenerate catalog.

services/multistreaming/web/package.json

@@ -0,0 +1,46 @@
+{
+  "name": "multistreaming",
+  "private": true,
+  "version": "0.0.1",
+  "type": "module",
+  "scripts": {
+    "dev": "vite",
+    "build": "tsc -b && vite build",
+    "lint": "eslint .",
+    "format": "prettier --write \"**/*.{ts,tsx}\"",
+    "typecheck": "tsc --noEmit",
+    "preview": "vite preview"
+  },
+  "dependencies": {
+    "@fontsource-variable/geist": "^5.3.0",
+    "@tailwindcss/vite": "^4",
+    "class-variance-authority": "^0.7.1",
+    "clsx": "^2.1.1",
+    "lucide-react": "^1.39.0",
+    "next-themes": "^0.4.6",
+    "radix-ui": "^1.6.7",
+    "react": "^19.2.6",
+    "react-dom": "^19.2.6",
+    "shadcn": "^4.20.0",
+    "sonner": "^2.0.8",
+    "tailwind-merge": "^3.6.0",
+    "tailwindcss": "^4",
+    "tw-animate-css": "^1.4.0"
+  },
+  "devDependencies": {
+    "@eslint/js": "^10",
+    "@types/node": "^24",
+    "@types/react": "^19",
+    "@types/react-dom": "^19",
+    "@vitejs/plugin-react": "^6",
+    "eslint": "^10",
+    "eslint-plugin-react-hooks": "^7.1.1",
+    "eslint-plugin-react-refresh": "^0.5.2",
+    "globals": "^17",
+    "prettier": "^3.8.3",
+    "prettier-plugin-tailwindcss": "^0.8.0",
+    "typescript": "~6",
+    "typescript-eslint": "^8",
+    "vite": "^8"
+  }
+}