bash: keep flyline (guarded on libflyline.so presence)

dot_bashrc

@@ -12,6 +12,9 @@
 # Shared aliases (same set as fish/zsh; source of truth: .chezmoidata/aliases.yaml)
 [ -f "$HOME/.config/shell/aliases.sh" ] && . "$HOME/.config/shell/aliases.sh"
 
+# Flyline — enhanced Bash line editing (machine-optional, guarded)
+[ -f "$HOME/.local/lib/libflyline.so" ] && enable -f "$HOME/.local/lib/libflyline.so" flyline
+
 # atuin shell history (needs bash-preexec)
 [ -f "$HOME/.atuin/bin/env" ] && . "$HOME/.atuin/bin/env"
 [ -f "$HOME/.bash-preexec.sh" ] && . "$HOME/.bash-preexec.sh"