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/index.html

@@ -0,0 +1,18 @@
+<!doctype html>
+<html lang="zh-CN" data-ds-dark-theme>
+  <head>
+    <meta charset="UTF-8" />
+    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
+    <title>Hermit</title>
+    <style>
+      /* Boot: match DSH bluish-950 before modules arrive; never flash light UA chrome */
+      html, body, #root { width: 100%; height: 100%; margin: 0; background: rgb(21, 21, 23); color: rgb(247, 247, 248); }
+      #root { display: flex; flex-direction: column; min-width: 0; }
+      button { appearance: none; -webkit-appearance: none; }
+    </style>
+  </head>
+  <body data-ds-dark-theme>
+    <div id="root"></div>
+    <script type="module" src="/src/main.tsx"></script>
+  </body>
+</html>