diff --git a/install.sh b/install.sh
index 2d2cdcd..04fe9c1 100755
--- a/install.sh
+++ b/install.sh
@@ -41,6 +41,18 @@ for src in "$repo_dir"/bin/*; do
     echo "link:  $link -> $src"
 done
 
+# Install tmux.conf if tmux is present and the user has no existing config.
+if command -v tmux >/dev/null 2>&1; then
+    tmux_conf="$HOME/.tmux.conf"
+    if [ ! -f "$tmux_conf" ]; then
+        cp "$repo_dir/tmux.conf" "$tmux_conf"
+        echo "link:  $tmux_conf (installed from repo)"
+        tmux source "$tmux_conf" 2>/dev/null && echo "ok:    tmux config reloaded" || true
+    else
+        echo "ok:    $tmux_conf already exists — not overwriting"
+    fi
+fi
+
 case ":$PATH:" in
     *":$target:"*) ;;
     *) echo "note:  add $target to PATH if it isn't already" ;;
diff --git a/tmux.conf b/tmux.conf
new file mode 100644
index 0000000..efd5ee6
--- /dev/null
+++ b/tmux.conf
@@ -0,0 +1,12 @@
+# Reduce escape sequence latency — default 500ms makes scroll feel completely broken
+# in TUI apps (Claude Code, vim, etc.) because each wheel event uses escape sequences.
+set -s escape-time 10
+
+# Pass focus events through to applications (Claude Code uses these)
+set -g focus-events on
+
+# True color passthrough
+set -ga terminal-overrides ",*256col*:Tc"
+
+# Larger scrollback for when you need tmux copy mode
+set -g history-limit 50000