Use local svgo.cmd wrapper binary

Switch SVG optimizer resolution from bin/svgo-cli.exe to bin/svgo.cmd.

Update unit tests to validate the new local binary path behavior.

Co-Authored-By: Abacus.AI CLI <agent@abacus.ai>

bin/svgo-client/node_modules/csso/cjs/clean/utils.cjs

@@ -0,0 +1,12 @@
+'use strict';
+
+function hasNoChildren(node) {
+    return !node || !node.children || node.children.isEmpty;
+}
+
+function isNodeChildrenList(node, list) {
+    return node !== null && node.children === list;
+}
+
+exports.hasNoChildren = hasNoChildren;
+exports.isNodeChildrenList = isNodeChildrenList;