webapp: archive pre-migration scene dirs + bash scripts, update docs

Moves the seven HTML scene dirs (landing/, loading/, game/, desktop/,
goodbye/, music-box/, music/) and the superseded bash helpers (setup.sh,
loading.sh, playlist.sh, telemetry.sh) into archived/ rather than deleting.
The Laravel webapp/ replaces all of them; archived/README.md spells out
the rollback procedure.

Also:
 - rewrite the relevant sections of CLAUDE.md so it points at webapp/
   blade views, the Artisan commands, and the supervisord lifecycle
   (`supervisorctl restart obs-webapp` after route / controller / .env
   changes; Blade view edits are still safe-while-running via OBS's
   Refresh cache).
 - extend scripts/deploy-rig.sh to install php + composer + supervisor,
   run `composer install`, copy obs-webapp.supervisord.conf into
   /etc/supervisor.d/, start the program, and call `php artisan
   rig:setup` + `rig:telemetry --collect` instead of the old bash.
 - .gitignore catches the generated machine-local files that came along
   when the old scene dirs moved (telemetry.js, loading.json, playlist.js,
   cmd.js, obs-config.js).
 - daemon.blade.php is now passive — listens to mpd:state but does not
   play audio or broadcast its own queue, so it stops fighting with
   bridges/mpd-state.py (the post-browser-daemon-migration source of
   truth for mpd:state).
 - nc.blade.php overrides .terminal { overflow: hidden } from hud.css
   so the `┤ TERMINAL ├` and `┤ NOW PLAYING ├` pane-tabs stick above
   the pane border instead of being clipped.

webapp/resources/views/overlays/music/nc.blade.php

@@ -54,12 +54,17 @@
     z-index: 1;
   }
   .pane.terminal {
+    /* Override hud.css `.terminal { overflow: hidden }` so the `┤ TERMINAL ├`
+       pane-tab can stick out 14px above the pane border. The scrolling
+       clip still happens inside #termOutput. */
+    overflow: visible;
     padding: 28px 36px;
     font-size: 24px;
     line-height: 1.55;
     color: var(--term-fg);
     text-shadow: 0 0 6px var(--term-glow);
   }
+  .pane.np-pane { overflow: visible; }
   .np-pane {
     padding: 24px 22px 20px;
     font-size: 18px;