Route terminal clipboard through tauri-plugin-clipboard-manager; bump to 0.2.3

navigator.clipboard.readText() triggers WebView2's "Allow clipboard access?"
permission prompt on every paste. The plugin goes through IPC + the OS
clipboard directly, so the prompt never fires.

Wired the Rust plugin, granted clipboard-manager:allow-{read,write}-text in
the capabilities manifest, swapped XtermPane's copy/paste handler to use
the plugin's readText/writeText.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

package.json

@@ -1,7 +1,7 @@
 {
   "name": "tiletopia",
   "private": true,
-  "version": "0.2.2",
+  "version": "0.2.3",
   "type": "module",
   "scripts": {
     "dev": "vite",
@@ -14,6 +14,7 @@
   },
   "dependencies": {
     "@tauri-apps/api": "^2.0.0",
+    "@tauri-apps/plugin-clipboard-manager": "^2.0.0",
     "@xterm/addon-fit": "^0.10.0",
     "@xterm/xterm": "^5.5.0",
     "react": "^18.3.0",