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/guides/resources/template/tex/structure/document.tex.twig

@@ -0,0 +1,3 @@
+{%- for child in node.children ~%}
+    {{ renderNode(child) }}
+{%~ endfor -%}

vendor/phpdocumentor/guides/resources/template/tex/structure/header-title.tex.twig

@@ -0,0 +1,4 @@
+{%- set headingLevel = node.level -%}
+\{% if headingLevel == 1 %}section{% elseif headingLevel == 2 %}subsection{% elseif headingLevel == 3 %}subsubsection{% elseif headingLevel == 4 %}paragraph{% elseif headingLevel == 5 %}subparagraph{% elseif headingLevel == 6 %}subparagraph{% endif %}{
+{{- renderNode(node.value) -}}
+}

vendor/phpdocumentor/guides/resources/template/tex/structure/project.tex.twig

@@ -0,0 +1,17 @@
+\documentclass[11pt]{report}
+\usepackage[utf8]{inputenc}
+\usepackage[T1]{fontenc}
+\usepackage[french]{babel}
+\usepackage{cite}
+\usepackage{amssymb}
+\usepackage{amsmath}
+\usepackage{mathrsfs}
+\usepackage{graphicx}
+\usepackage{hyperref}
+\usepackage{listings}
+\begin{document}
+\label{{ '{' }}{{ document.environment.url}}{{ '}' }}
+{%- for document in documents -%}
+{{ renderNode(document) }}
+{%- endfor -%}
+\end{document}

vendor/phpdocumentor/guides/resources/template/tex/structure/section.tex.twig

@@ -0,0 +1,3 @@
+{% for childNode in node.children %}
+    {{ renderNode(childNode) }}
+{% endfor %}