feat(hyprland): add theme switching between dupre and hudson

Add two complete themes:
- dupre: warm earthy colors from Emacs dupre-theme.el
- hudson: Tomorrow Night + Goldenrod accent (original)

Theme files cover: foot, fuzzel, waybar, dunst, hyprland borders.

Add set-theme script with:
- set-theme <name>: apply a theme
- set-theme --toggle: switch between themes
- set-theme --pick: fuzzel picker

Keybindings:
- $mod Y: toggle theme
- $mod Shift Y: pick theme with fuzzel

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

1 files changed, 55 insertions, 2 deletions

diff --git a/todo.org b/todo.org
index 49a549a..9b757d3 100644
--- a/todo.org
+++ b/todo.org
@@ -123,7 +123,8 @@ The script handles edge cases gracefully, provides detailed error messages with
 **** TODO [#A] Fix Hyprland Configuration Issues
 Issues discovered during live testing on ratio. Add sub-items as "hyprland config issue".
 
-***** TODO [#B] Consider Hyprland Plugins
+***** DONE [#B] Consider Hyprland Plugins
+CLOSED: [2026-01-25 Sun]
 Official plugins: https://github.com/hyprwm/hyprland-plugins
 Install via hyprpm (added cpio dependency to archsetup).
 
@@ -162,7 +163,8 @@ closeunfocused is handy for cleaning up.
 - borders-plus-plus: extra border layers (cosmetic)
 - hyprwinwrap: use any app as wallpaper
 
-***** TODO [#C] Evaluate Hyprland Layout Options
+***** DONE [#C] Evaluate Hyprland Layout Options
+CLOSED: [2026-01-25 Sun]
 Current layouts: master (left/top/center), dwindle. No deck layout available natively.
 
 Options to consider:
@@ -186,6 +188,57 @@ Decision: Keep current setup or adopt hy3 for more flexible manual tiling.
 Use pywal to generate color schemes from wallpaper. Reference: reference-repos/kastrbl4nik-dots/
 Tools: swww (wallpaper), wal (colors), pywalfox (Firefox), pywal-spicetify (Spotify)
 
+****** How pywal works
+1. Run =wal -i /path/to/wallpaper.jpg=
+2. Analyzes image and extracts 16-color palette
+3. Colors written to =~/.cache/wal/colors.json= (and other formats)
+4. Apps read from these files or use templates that pywal fills in
+
+****** Reverting to original theme
+Pywal doesn't overwrite original configs - you either:
+- Use templates (pywal fills in colors, copies to config locations)
+- Have configs that source from =~/.cache/wal/= files
+- Original configs stay untouched
+
+Save/restore themes: =wal --theme= lists saved themes, =wal -f theme-name= restores.
+Could save current goldenrod scheme and switch back anytime.
+
+****** Emacs integration
+- Pywal works with Emacs but requires extra setup
+- =ewal= package reads pywal colors from =~/.cache/wal/colors.json= and creates Emacs theme
+- Terminal Emacs (=-nw=) inherits terminal colors automatically
+- GUI Emacs (emacsclient -c) needs ewal or similar explicit integration
+- Adds complexity; replaces carefully-tuned theme with auto-generated colors
+
+****** Auto-trigger on wallpaper change
+Option 1 - Wrapper script (simplest):
+#+begin_src sh
+#!/bin/sh
+swww img "$1"
+wal -i "$1"
+killall -SIGUSR2 waybar  # reload to pick up colors
+#+end_src
+Use this instead of =swww img= everywhere (startup, waypaper, keybinds).
+
+Option 2 - Hook into waypaper:
+Waypaper has post-command setting in config - set to run =wal -i= after wallpaper change.
+
+Option 3 - File watcher:
+Watch =~/.cache/swww/= for changes and trigger wal automatically. More complex.
+
+****** Considerations
+- Best for: unified colors across apps, variety, matching wallpaper
+- Less ideal for: specific color scheme you love, consistency, carefully tuned app colors
+- Some wallpapers produce great palettes; others produce muddy low-contrast results
+- Current goldenrod/dark gray theme works well - pywal would replace it
+
+***** TODO [#D] Consider improving waybar netspeed click responsiveness
+The network module has a 1-second sleep to measure throughput, causing occasional
+missed clicks when toggling the scratchpad. Options if this becomes annoying:
+1. Increase interval (fewer refreshes = fewer missed clicks, less frequent updates)
+2. Background daemon approach (separate process writes to file, script just reads it)
+Current interval: 2 seconds. Script runtime: ~1 second.
+
 ***** TODO [#C] Consider Customizing Hyprland Animations
 Current: windows pop in, scratchpads slide from bottom.