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/mdn-data/css/index.js

@@ -0,0 +1,9 @@
+module.exports = {
+  atRules:    require('./at-rules'),
+  functions:  require('./functions'),
+  selectors:  require('./selectors'),
+  types:      require('./types'),
+  properties: require('./properties'),
+  syntaxes:   require('./syntaxes'),
+  units:      require('./units'),
+}