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>

archive/desktop-tauri/src-tauri/Cargo.toml

@@ -0,0 +1,29 @@
+[package]
+name = "hermit-desktop"
+version = "1.1.0"
+description = "Hermit desktop shell (Tauri 2)"
+authors = ["WHC"]
+edition = "2021"
+
+[lib]
+name = "hermit_desktop_lib"
+crate-type = ["staticlib", "cdylib", "rlib"]
+
+[build-dependencies]
+tauri-build = { version = "2", features = [] }
+cc = "1.2"
+
+[dependencies]
+tauri = { version = "2", features = [] }
+tauri-plugin-shell = "2"
+tauri-plugin-dialog = "2"
+serde = { version = "1", features = ["derive"] }
+serde_json = "1"
+tokio = { version = "1", features = ["rt-multi-thread", "sync", "macros", "time"] }
+once_cell = "1"
+
+[features]
+default = ["custom-protocol"]
+custom-protocol = ["tauri/custom-protocol"]
+# Link libcstcore from the repo (requires curl + built archive).
+engine = []