Add portable Zed Gist sync configuration

export.sh

@@ -0,0 +1,22 @@
+#!/usr/bin/env sh
+set -eu
+
+target=$(CDPATH= cd -- "$(dirname -- "$0")" && pwd)
+source="${XDG_CONFIG_HOME:-$HOME/.config}/zed"
+
+cp "$source/settings.json" "$target/settings.json"
+cp "$source/keymap.json" "$target/keymap.json"
+cp "$source/scripts/toggle-file-scan-exclusions.mjs" "$target/scripts/toggle-file-scan-exclusions.mjs"
+cp "$source/scripts/file-exclusions.json" "$target/scripts/file-exclusions.json"
+cp "$source/scripts/zed-settings-sync.mjs" "$target/scripts/zed-settings-sync.mjs"
+
+node - "$source/tasks.json" "$target/tasks.json" "$source/scripts/toggle-file-scan-exclusions.mjs" "$source/scripts/zed-settings-sync.mjs" <<'NODE'
+const fs = require("node:fs");
+const [source, target, toggleScript, syncScript] = process.argv.slice(2);
+const tasks = fs.readFileSync(source, "utf8")
+  .replaceAll(toggleScript, "__TOGGLE_SCRIPT__")
+  .replaceAll(syncScript, "__SYNC_SCRIPT__");
+fs.writeFileSync(target, tasks);
+NODE
+
+printf 'Exported Zed configuration from %s\n' "$source"