This repository is organized around a desktop host app plus a host-side plugin ecosystem. `LanMountainDesktop/` contains the application entry points, UI, services, component system, and plugin runtime integration. The surrounding projects provide the public SDK, shared contracts, appearance infrastructure, settings primitives, host abstractions, runtime support, and tests.
**Launcher Architecture**: `LanMountainDesktop.Launcher/` serves as the single entry point, managing OOBE, splash screen, multi-version deployment, incremental updates, and plugin installation. It uses a version directory structure (`app-{version}/`) with marker files (`.current`, `.partial`, `.destroy`) to enable atomic updates and rollback capabilities. See the Chinese section above for detailed architecture documentation.
The runtime flow starts with the Launcher selecting the best version, then proceeds into `Program.cs`, into `App.axaml.cs`, initializes settings/theme/localization services, then boots the desktop shell, tray, windows, and plugin runtime. The most important behavior boundaries are component registration, plugin activation, appearance resources, and settings persistence.
## VeloPack Integration Note
- Incremental package build/publish has moved to VeloPack native assets (
eleases.win.json + *.nupkg).
- Launcher runtime responsibilities are unchanged: OOBE, startup orchestration, update apply, and rollback.
The current plugin runtime is still in-process. `PluginRuntimeService` and `PluginLoader` load plugin code inside the Host process, while `PluginLoadContext` only provides assembly isolation, not process isolation.
The repository now reserves three runtime modes:
-`in-proc`: current default and compatibility mode
-`isolated-background`: phase-1 mode, where background logic moves into a dedicated worker process and Host UI becomes a thin IPC-driven shell
-`isolated-window`: phase-2 mode, where plugin UI renders out of process and Host embeds a platform window handle
Two new supporting packages define the isolation boundary:
-`LanMountainDesktop.PluginIsolation.Ipc/`: ClassIsland-inspired IPC facade that centralizes startup constants, routed notify IDs, and client/server wrappers over the future `dotnetCampus.Ipc` transport binding
For the detailed design, migration path, UI strategy, and residual risks, see `docs/PLUGIN_PROCESS_ISOLATION_ARCHITECTURE.md`.