Commit the control-panel terminal frontend (xterm) so clean builds keep it

The terminal Alpine component + xterm/xterm-addon-fit only ever existed in an
out-of-band build; committed source never had them, so clean CI rebuilds shipped
a bundle WITHOUT the terminal (blank panel). Add resources/js/hosting-terminal.js
(window.hostingInteractiveTerminal, recovered from the last working build), import
it from app.js, and add xterm deps to package.json/lock. Verified: a clean
'npm ci && vite build' now includes the component + xterm.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

package.json

@@ -17,6 +17,8 @@
     "dependencies": {
         "@alpinejs/collapse": "^3.15.12",
         "@tailwindcss/forms": "^0.5.11",
-        "alpinejs": "^3.15.12"
+        "alpinejs": "^3.15.12",
+        "xterm": "^5.3.0",
+        "xterm-addon-fit": "^0.8.0"
     }
 }