refactor: Cleanup git state - commit all staged changes

Major refactoring cleanup:
- Add new controller architecture (class-controller-*.php)
- Add new settings-v2 UI (views/settings-v2/)
- Add new CSS architecture (agentic-sidebar.css, tokens)
- Add esbuild build pipeline (scripts/build.js, package.json)
- Add composer dependencies (vendor/)
- Add frontend src directory (assets/js/src/index.jsx)
- Add documentation files
- Remove old/obsolete files (class-settings.php, old CSS)

This commits all pending changes from previous refactoring efforts.

vendor/phpdocumentor/graphviz/phpstan.neon

@@ -0,0 +1,12 @@
+includes:
+    - /composer/vendor/phpstan/phpstan-mockery/extension.neon
+    - ./extension.neon
+
+parameters:
+    level: max
+    ignoreErrors:
+        #We have some runtime protection that needs to be tested. Ignore these errors
+        - '#Call to an undefined method phpDocumentor\\GraphViz\\Edge::someNonExcistingMethod\(\)\.#'
+        - '#Call to an undefined method phpDocumentor\\GraphViz\\Graph::MyMethod\(\)\.#'
+        - '#Call to an undefined method phpDocumentor\\GraphViz\\Graph::getNotExisting\(\)\.#'
+        - '#Call to an undefined method phpDocumentor\\GraphViz\\Node::someNonExistingMethod\(\)\.#'