docs(install): cover Docker and native deployments

docs/PUBLIC_RELEASE.md

@@ -1,7 +1,13 @@
 # Public installation and release guide
 
-Magent runs as one non-root Linux container containing the Python API and the
-Next.js frontend. Connect your own media services in the setup wizard; no
+Start with [installation methods](INSTALLATION.md): [Docker Compose/CLI](DOCKER.md),
+[Portainer](PORTAINER.md), [native Linux services](NATIVE_INSTALL.md), or
+[foreground Windows/macOS/Linux](LOCAL_DEVELOPMENT.md). This document retains
+the advanced container/manual-key and release-maintenance details.
+
+The container distribution runs as one non-root Linux container containing the
+Python API and Next.js frontend; a native deployment runs them as two services.
+Connect your own media services in the setup wizard; no
 pre-existing Magent account or database is required. Optional
 integrations may be skipped. Media files remain in your existing media services.
 
@@ -22,8 +28,9 @@ relicense third-party software or grant rights to third-party branding.
 
 ## Fresh installation
 
-For the simplest **Portainer** installation, use the image-only root
-[compose.yml](../compose.yml) and follow the [Portainer guide](PORTAINER.md).
+For a prebuilt **Docker Compose or Portainer** installation, use the image-only
+root [compose.yml](../compose.yml) and follow the [Docker](DOCKER.md) or
+[Portainer](PORTAINER.md) guide.
 That fresh-install path pulls `rephl3xnz/magent:latest` from Docker Hub with no
 environment inputs, automatically persists its private keys and requires no
 Dockerfile or `.env`. Confirm the browser-facing application URL in the