readme at the root, and fix what would break on a fresh machine

The repo landing page showed .config, .themes and .gtkrc-2.0 and nothing else,
so there was no sign the bootstrap existed. It has always been at
.config/rice/install.sh - that is just where it lands on disk. Root README now
carries the curl one-liner, a map of what is tracked, and a note that this is a
bare repo over $HOME so nobody goes looking for a wrapper folder again.

Things that would not have survived a replication:

  - polybar's click and scroll handlers called $HOME/bin/system-info.sh and
    $HOME/bin/volume.sh. That directory does not exist; the scripts are in
    .config/scripts. The exec lines already pointed there, so only the
    interactive bits were dead.
  - bspwmrc hardcoded DisplayPort-0, so no desktops on any other machine.
    Takes the xrandr primary now, falling back to the first monitor bspc sees.
  - install.sh picked conflicting files out of git's checkout error with a
    regex that required a dot inside the name, so .bashrc and .xinitrc were
    never matched and never backed up - and .bashrc always exists on a fresh
    Arch install, which is precisely when the checkout aborts.
  - bspwmrc sourced ~/.env and merged ~/.Xresources unconditionally; neither
    exists. Guarded.

packages.txt was missing programs whose configs this repo already carries:
fish, neovim, yazi, kitty, plus xrdb/xsetroot/xsettingsd/wmname that bspwmrc
launches, gtk3 for the control panel, and wireplumber for the wpctl calls.

Newly tracked: .xinitrc (the thing that actually starts bspwm), .bashrc (which
holds the dotfiles alias), greenclip, flameshot, kitty, Thunar, mimeapps and
user-dirs. Dropped six editor backups that had been committed by accident.
Skipped QtProject.conf - it is file-dialog history, not configuration.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_011beBgzmH72WFn8wiWqRZPf

.config/kitty/kitty.conf

@@ -0,0 +1,11 @@
+font_family      JetBrainsMono Nerd Font Regular
+bold_font        JetBrainsMono Nerd Font Bold
+italic_font      JetBrainsMono Nerd Font SemiBold Italic
+bold_italic_font JetBrainsMono Nerd Font Bold Italic
+
+font_size 11.0
+hide_window_decorations yes
+confirm_os_window_close 0
+window_padding_width 10
+
+include ./themes/dc.conf

.config/kitty/themes/dc.conf

@@ -0,0 +1,22 @@
+# Sakura Line - sampled from bspwm/wallpaper/wallpaper.jpg
+background #0f0d17
+foreground #e9eefb
+cursor #92b9ea
+selection_background #2e2842
+selection_foreground #0f0d17
+color0 #0f0d17
+color8 #3a3350
+color1 #cf6a80
+color9 #e0798f
+color2 #8fae74
+color10 #a8c68d
+color3 #d8a87c
+color11 #e9c79b
+color4 #7c9ede
+color12 #92b9ea
+color5 #b483c0
+color13 #d0a4d8
+color6 #8ab6c4
+color14 #a3c0cb
+color7 #c9d1e2
+color15 #e9eefb