Housekeeping: fix theme SSOT, wire screenshot, remove dead swaylock

- mako/config: generate from theme/colors.json in install.sh instead of
  symlinking a static file — mako is the only tool that can't use CSS
  variables, so colors.json is now the single source of truth for it
- gtklock/config.ini: remove hardcoded /home/alex absolute path for style;
  gtklock falls back to $XDG_CONFIG_HOME/gtklock/style.css by default
- niri: replace inline grim spawn-sh with `spawn "screenshot"` to use the
  existing script (which also copies to clipboard via wl-copy)
- install.sh: add screenshot symlink; mako generation step
- packages.txt: add snixembed (used in niri spawn-at-startup, was missing)
- swaylock/config: delete (replaced by gtklock in previous commit)
- .gitignore: add mako/config (now generated, not tracked)

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

.gitignore

@@ -1 +1,2 @@
 nohup.out
+mako/config

gtklock/config.ini

@@ -1,4 +1,3 @@
 [main]
 gtk-theme=Materia-dark
-style=/home/alex/.config/gtklock/style.css
 follow-focus=true

install.sh

@@ -30,7 +30,17 @@ mkdir -p ~/.config/theme
 ln -sf "$(pwd)/theme/colors.css" ~/.config/theme/colors.css
 ln -sf "$(pwd)/wofi/config" ~/.config/wofi/config
 ln -sf "$(pwd)/wofi/style.css" ~/.config/wofi/style.css
-ln -sf "$(pwd)/mako/config" ~/.config/mako/config
+python3 - <<'PYEOF'
+import json, os
+c = json.load(open("theme/colors.json"))
+config = f"""background-color={c['background']}
+text-color={c['foreground']}
+border-size=2
+border-color={c['blue']}
+default-timeout=4000
+"""
+open(os.path.expanduser("~/.config/mako/config"), "w").write(config)
+PYEOF
 ln -sf "$(pwd)/gtklock/config.ini" ~/.config/gtklock/config
 ln -sf "$(pwd)/gtklock/style.css" ~/.config/gtklock/style.css
 ln -sf "$(pwd)/fish/config.fish" ~/.config/fish/config.fish
@@ -48,6 +58,7 @@ ln -sf "$(pwd)/scripts/powermenu.sh" ~/.local/bin/powermenu
 ln -sf "$(pwd)/scripts/clipboard.sh" ~/.local/bin/clipboard-picker
 ln -sf "$(pwd)/scripts/power-profile.sh" ~/.local/bin/power-profile
 ln -sf "$(pwd)/scripts/fan-profile.sh" ~/.local/bin/fan-profile
+ln -sf "$(pwd)/scripts/screenshot.sh" ~/.local/bin/screenshot
 
 echo "==> Enabling systemd user services"
 mkdir -p ~/.config/systemd/user

niri/config.kdl

@@ -83,7 +83,7 @@ binds {
     Mod+Shift+8 { move-window-to-workspace 8; }
     Mod+Shift+9 { move-window-to-workspace 9; }
 
-    Print { spawn-sh "grim -g \"$(slurp)\" ~/Pictures/screenshot-$(date +%s).png"; }
+    Print { spawn "screenshot"; }
 
     Mod+M { move-window-to-workspace "minimized"; }
     Mod+Shift+M { focus-workspace "minimized"; }

packages.txt

@@ -11,6 +11,7 @@ brightnessctl
 pamixer
 gtklock
 swayidle
+snixembed
 ttf-jetbrains-mono-nerd
 network-manager-applet
 polkit-gnome

swaylock/config

@@ -1,41 +0,0 @@
-# swaylock config - Tomorrow Night theme
-
-# Background
-color=1d1f21
-
-# Indicator
-indicator-radius=80
-indicator-thickness=8
-indicator-idle-visible
-
-# Ring colors
-ring-color=373b41
-ring-clear-color=81a2be
-ring-ver-color=b5bd68
-ring-wrong-color=cc6666
-
-# Inside colors
-inside-color=1d1f21cc
-inside-clear-color=1d1f21cc
-inside-ver-color=1d1f21cc
-inside-wrong-color=1d1f21cc
-
-# Line (separator between inside and ring)
-line-color=00000000
-line-clear-color=00000000
-line-ver-color=00000000
-line-wrong-color=00000000
-
-# Text
-text-color=c5c8c6
-text-clear-color=81a2be
-text-ver-color=b5bd68
-text-wrong-color=cc6666
-
-# Key highlight
-key-hl-color=81a2be
-bs-hl-color=cc6666
-
-# Font
-font=JetBrainsMono Nerd Font
-font-size=14