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goodbye/, music-box/, music/) and the superseded bash helpers (setup.sh,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.

archived/scenes/landing/telemetry.json

@@ -0,0 +1,42 @@
+{
+  "collectedAt": "2026-04-26T20:17:38Z",
+  "rig":         "Ignia",
+  "cpu": {
+    "model":   "AMD Ryzen 5",
+    "threads": 12
+  },
+  "mem": {
+    "totalGB": 32
+  },
+  "host": {
+    "kernel": "Arch Linux 6.18.23-1-lts"
+  },
+  "gpu": {
+    "name":        "NVIDIA GeForce RTX 3060 Ti",
+    "vramTotalMB": 8192
+  },
+  "obs": {
+    "profile":    "ophi118",
+    "renderer":   "OpenGL",
+    "outputMode": "Advanced",
+    "canvas":     { "w": 2560, "h": 1336 },
+    "output":     { "w": 1920,  "h": 1080  },
+    "fps":        30,
+    "color": {
+      "format": "NV12",
+      "space":  "709",
+      "range":  "Partial"
+    },
+    "stream": {
+      "encoder":     "x264",
+      "rateControl": "CBR",
+      "bitrateKbps": null,
+      "keyintSec":   2,
+      "profile":     "high"
+    },
+    "audio": {
+      "sampleRateHz": 48000,
+      "channels":     "Stereo"
+    }
+  }
+}