Initial dotfiles setup with GNU stow

Centralize dotfiles from ~ into stow packages:
- zsh: .zshrc, .zshenv
- git: .gitconfig
- nvim: init.lua, lua/, plugin/, after/, lazy-lock.json
- tmux: tmux.conf, session-list.sh
- karabiner: karabiner.json
- ghostty: config.ghostty
- claude: CLAUDE.md, settings.json, settings.local.json, statusline.sh, 30 commands

tmux/.config/tmux/session-list.sh

@@ -0,0 +1,9 @@
+#!/bin/sh
+current=$(tmux display-message -p '#S')
+tmux list-sessions -F '#S' | while IFS= read -r s; do
+  if [ "$s" = "$current" ]; then
+    printf '#[bg=#4F4946,fg=#d8a657] %s #[bg=default,fg=default]' "$s"
+  else
+    printf ' %s ' "$s"
+  fi
+done

tmux/.config/tmux/tmux.conf

@@ -0,0 +1,127 @@
+# custom
+
+# Set prefix to C-w
+unbind C-b
+set -g prefix M-w
+bind M-w send-prefix
+
+set -g mouse on
+
+# Enable extended keys so Shift+Enter and other modified keys work
+set -s extended-keys on
+set -as terminal-features 'xterm*:extkeys'
+
+# Use Vim-style pane navigation (prefix + h/j/k/l)
+bind h select-pane -L
+bind j select-pane -D
+bind k select-pane -U
+bind l select-pane -R
+
+# Switch sessions with prefix + H/J/K/L (capital)
+bind H switch-client -p
+bind J switch-client -n
+bind K switch-client -p
+bind L switch-client -n
+
+# Switch sessions with prefix + H/J/K/L (capital)
+bind J switch-client -n
+bind K switch-client -p
+bind H switch-client -p
+bind L switch-client -n
+
+# Auto-rename windows to the current running command
+set -g automatic-rename on
+set -g automatic-rename-format '#{b:pane_current_path}'
+
+#from github
+
+
+# Start all numbering at 1 instead of 0 for better key reachability
+set-option -g base-index 1
+set-option -g pane-base-index 1
+
+# Increase history limit, as we want an "almost" unlimited buffer.
+# May be set to something even higher, like 250k
+set-option -g history-limit 100000
+
+# Fix Terminal Title display, to not contain tmux specic information
+set-option -g set-titles on
+set-option -g set-titles-string "#{pane_title}"
+
+# Open new windows and panes in the current working directory of the active
+# pane.
+bind c new-window -c "#{pane_current_path}"
+bind - split-window -c "#{pane_current_path}"
+bind "'" split-window -h -c "#{pane_current_path}"
+
+# Enable extended support for some more sophisticated terminal emulator
+# features. Disable them if they are causing problems!
+set-option -s focus-events on
+set-option -s extended-keys on
+
+# Disable waiting time when pressing escape, for smoother Neovim usage. Disable
+# if differentiation between function and meta keycombination is needed.
+set-option -s escape-time 0 
+
+##
+# Styling
+##
+
+# gruvbox material colorscheme (mostly)
+RED="#ea6962"
+GREEN="#a9b665"
+YELLOW="#d8a657"
+BLUE="#7daea3"
+MAGENTA="#d3869b"
+CYAN="#89b482"
+BLACK="#1d2021"
+DARK_GRAY="#32302F"
+LIGHT_GRAY="#4F4946"
+BG="#32302F"
+FG="#d4be98"
+
+# Nerdfont characters
+HALF_ROUND_OPEN="#(printf '\uE0B2')"
+HALF_ROUND_CLOSE="#(printf '\uE0B0')"
+TRIANGLE_OPEN="#(printf '\uE0B2')"
+TRIANGLE_CLOSE="#(printf '\uE0B0')"
+
+# Move statusbar to the top
+set-option -g status-position top
+
+# Basic colors of the Statusbar
+set-option -g status-style bg=${BG},fg=${FG}
+
+# Push window list to the left side
+set-option -g status-justify left
+
+# Left section empty (windows shown via status-justify left)
+set-option -g status-left ""
+
+# Right section shows all sessions (active highlighted)
+set-option -g status-right "#(~/.config/tmux/session-list.sh)"
+
+# Set max length of left and right section
+set-option -g status-left-length 100
+set-option -g status-right-length 100
+
+# Style and set content for the inactive windows
+set-option -g window-status-format "\
+ \
+#I\
+#[fg=${MAGENTA}]:\
+#[fg=default]#W\
+ \
+"
+
+# Style and set content for the active windows
+set-option -g window-status-current-format "\
+#[bg=${LIGHT_GRAY},fg=default] #I\
+#[fg=${RED}]:\
+#[fg=default]#W \
+#[bg=default]\
+"
+
+# Remove the separator between window list items, as we already have spacing
+# "around" inactive items
+set-option -g window-status-separator ""