refactor: archive GUI clients; keep minimal TUI with hooks/API

Move Qt/Tauri/full Web SPA under archive/, ship hermit as CLI/TUI plus
libcstcore and cst-webui/1 HTTP+SSE (turn lifecycle hooks, capabilities).

Co-authored-by: Cursor <cursoragent@cursor.com>

docs/desktop.md

@@ -1,20 +1,23 @@
-# Hermit Desktop (Tauri)
+# Hermit Desktop（归档）
 
-Canonical GUI: [`apps/desktop`](../apps/desktop/). Qt under [`app/`](../app/) is frozen ([DEPRECATED](../app/DEPRECATED.md)).
+桌面 GUI **不在本仓默认交付物中**。参考实现已冻结于：
 
-## Shape
+| 树 | 说明 |
+|----|------|
+| [`archive/desktop-tauri/`](../archive/desktop-tauri/) | Tauri 2 + React（原 `apps/desktop`） |
+| [`archive/qt-app/`](../archive/qt-app/) | Qt6/QML（原 `app/`，已 DEPRECATED） |
 
-- **Shell**: Tauri 2 (Linux / Windows / macOS)
-- **UI**: React 19 — session rail, chat, tool cards, composer (DeepSeek Harness–like IA)
-- **Engine**: in-process `libcstcore` via Rust FFI (feature `engine`); without it the host uses a mock / echo path so the UI is developable
+正式远程客户端请实现 [webui.md](webui.md) / [webui-schema.md](webui-schema.md)
+（`hermit --web`）。进程内嵌入请用 `libcstcore` + `cst_agent_hooks_t`；归档 FFI
+见 `archive/desktop-tauri/src-tauri/src/ffi_bridge.*`。
 
-## Dev
+## 归档 Tauri 开发（不保证可编）
 
 ```bash
 nix-shell -p rustc cargo nodejs_22 pkg-config webkitgtk_4_1 gtk3 librsvg openssl curl
-cd apps/desktop && npm install && npm run tauri dev
+cd archive/desktop-tauri && npm install && npm run tauri dev
 ```
 
-## Product env
+## 产品环境变量
 
-`HERMIT_*` preferred, `CST_*` accepted (see `hermit_getenv`). Config dir `~/.config/hermit`.
+`HERMIT_*` 优先，`CST_*` 仍接受（见 `hermit_getenv`）。配置目录 `~/.config/hermit`。