control centre, notification overhaul, and cleanup

One centred rofi panel (super+x, or the gear in the bar) now drives network,
bluetooth, audio, WireGuard, display, notifications, clipboard, emoji,
screenshots, wallpaper, the particle layer, the bar and power. The separate
per-function menus are gone.

dunst: icons and images were disabled outright (icon_position=off,
max_icon_size=0). Now icons resolve through Papirus, images render, progress
bars are styled, notifications gap and stack, and fullscreen windows are not
covered unless the message is critical. Volume up/down never notified at all;
they now show a stacking OSD with a progress bar.

Removed things that were broken or belonged to whoever this rice came from:
- vpn-launcher.sh (mullvad/openvpn) and dc-multivpn
- audio/bluetooth/network/power rofi menus, folded into the control centre
- untar-all, unzip-all, resetxdgportal (unreferenced)
- a sxhkd binding hardcoded to /home/sarthak/projects/scribe
- clipboard-manager.sh keyed off XDG_SESSION_TYPE, which is 'tty' here, so it
  only ever printed a Russian error; rewritten on greenclip
- toggle-bar.sh was bound to super+b but did not exist; written

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01Cn3dHfbgNYdbZvzb1b3GQt

.config/rice/README.md

@@ -34,6 +34,39 @@ the dotfiles checkout is moved to `~/.rice-backup-<timestamp>/` first.
 | Wallpaper layer | `particles`, built from `particles/` here |
 | Toolkits | GTK2/3/4 via `gtk.css` overrides, Qt via qt6ct |
 
+## Control centre
+
+`super + x`, or the gear at the right of the bar, opens one centred panel that
+drives everything — no separate menus:
+
+| | |
+|---|---|
+| Network | Wi-Fi on/off, rescan, pick a network (password prompt inline) |
+| Bluetooth | power on/off, scan, connect/disconnect paired devices |
+| Audio | volume, mute, mic mute, switch output sink |
+| VPN | WireGuard interfaces up/down via `systemctl wg-quick@…` |
+| Display | switch resolution/refresh on the connected output |
+| Notifications | do-not-disturb, replay history, clear |
+| Clipboard / Emoji / Screenshot | greenclip, rofimoji, flameshot |
+| Wallpaper / Particles / Bar | shuffle, toggle the particle layer, hide the bar |
+| Power | lock, log out, suspend, reboot, shut down |
+
+## Keybindings
+
+| | |
+|---|---|
+| `super + Return` | terminal (st) |
+| `super + w` | app launcher (rofi drun) |
+| `super + x` | control centre |
+| `super + v` | clipboard history |
+| `super + period` | emoji picker |
+| `super + b` | toggle the bar |
+| `super + alt + p` | screenshot (flameshot) |
+| `super + q` | close window |
+| `super + f` | fullscreen |
+| `super + space` | float/tile |
+| `super + Escape` | reload sxhkd |
+
 ## Palette
 
 | role | hex | from |

.config/rice/packages.txt

@@ -39,6 +39,19 @@ qt6ct
 papirus-icon-theme
 aur:bibata-cursor-theme
 
+# --- runtime deps the rice actually calls ---
+networkmanager
+bluez
+bluez-utils
+pamixer
+playerctl
+libnotify
+xclip
+flameshot
+i3lock
+rofimoji
+aur:rofi-greenclip
+
 # --- apps ---
 thunar
 fastfetch