Add tmux config

tmux/tmux.conf

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+# ---------- Basics ----------
+set -g mouse on
+set -g history-limit 50000
+setw -g mode-keys vi
+set -g default-terminal "screen-256color"
+set -ga terminal-overrides ",xterm-256color:Tc"   # true color if your terminal supports it
+set -sg escape-time 10                            # snappier ESC, fixes vim lag
+set -g focus-events on
+
+# ---------- Sensible numbering ----------
+set -g base-index 1                               # windows start at 1, not 0
+setw -g pane-base-index 1
+set -g renumber-windows on                        # close window 2 of 1,2,3 → renumbers to 1,2
+
+# ---------- Better prefix (optional) ----------
+# Ctrl-b is awkward; many people remap to Ctrl-a (like screen).
+# Comment this block out if you'd rather keep Ctrl-b.
+unbind C-b
+set -g prefix C-a
+bind C-a send-prefix
+
+# ---------- Saner splits ----------
+# Default bindings are " and % — impossible to remember. Use | and -.
+bind | split-window -h -c "#{pane_current_path}"
+bind - split-window -v -c "#{pane_current_path}"
+unbind '"'
+unbind %
+
+# New windows open in the current directory too
+bind c new-window -c "#{pane_current_path}"
+
+# ---------- Pane navigation ----------
+# Vim-style hjkl movement between panes
+bind h select-pane -L
+bind j select-pane -D
+bind k select-pane -U
+bind l select-pane -R
+
+# Resize panes with Prefix + H/J/K/L (repeatable)
+bind -r H resize-pane -L 5
+bind -r J resize-pane -D 5
+bind -r K resize-pane -U 5
+bind -r L resize-pane -R 5
+
+# ---------- Reload config ----------
+bind r source-file ~/.tmux.conf \; display "Config reloaded"
+
+# ---------- Copy mode niceties ----------
+bind -T copy-mode-vi v send -X begin-selection
+bind -T copy-mode-vi y send -X copy-selection-and-cancel
+
+# ---------- Status bar ----------
+set -g status-interval 5
+set -g status-left-length 30
+set -g status-right-length 60
+set -g status-left  "#[bold] #S #[default]│ "
+set -g status-right "│ %a %Y-%m-%d %H:%M "
+# set -g status-style "bg=default fg=default"
+setw -g window-status-current-style "bold"
+
+# ---------- Activity / bells ----------
+# setw -g monitor-activity on
+# set -g visual-activity off                        # don't beep, just highlight in status bar