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/css-tree/lib/syntax/config/walker.js

@@ -0,0 +1,5 @@
+import * as node from '../node/index.js';
+
+export default {
+    node
+};