Add fx bootstrap.sh and copy-paste command on the live page

contrib/fx/bootstrap.sh

@@ -0,0 +1,35 @@
+#!/bin/sh
+# Fetches f() and fx() (plus all default sources) into a temp dir and
+# sources them into your CURRENT shell -- no git, no cloning.
+#
+# Run with eval so sourcing happens in your real shell, not a subshell
+# that vanishes when the script exits:
+#
+#   eval "$(curl -fsSL https://huggingface.co/spaces/Daveswo/self-healing-autopoietic-shell/raw/main/contrib/fx/bootstrap.sh)"
+#
+# After that: f and fx are ready to use in this shell session. To keep
+# them in every new shell, add the same eval line to your rc file.
+
+_base="https://huggingface.co/spaces/Daveswo/self-healing-autopoietic-shell/raw/main"
+_dir="${TMPDIR:-/tmp}/self-healing-shell-$$"
+mkdir -p "$_dir/sources.d" 2>/dev/null
+
+_fetch_ok=1
+curl -fsSL "$_base/src/f.sh" -o "$_dir/f.sh" || _fetch_ok=0
+curl -fsSL "$_base/contrib/fx/fx.sh" -o "$_dir/fx.sh" || _fetch_ok=0
+for s in 10-known.sh 20-history.sh 30-selfdiag.sh 40-pathfuzzy.sh 50-thefuck.sh 90-team-shared.sh; do
+    curl -fsSL "$_base/contrib/fx/sources.d/$s" -o "$_dir/sources.d/$s" || _fetch_ok=0
+done
+
+if [ "$_fetch_ok" != 1 ]; then
+    echo "bootstrap: fetch failed, check your connection" >&2
+else
+    chmod +x "$_dir"/*.sh "$_dir"/sources.d/*.sh 2>/dev/null
+    FX_SOURCES_DIR="$_dir/sources.d"
+    export FX_SOURCES_DIR
+    . "$_dir/f.sh"
+    . "$_dir/fx.sh"
+    echo "f() and fx() are ready in this shell. Try: fx <command-that-might-fail>"
+fi
+
+unset _base _dir _fetch_ok s