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/.scrutinizer.yml

@@ -0,0 +1,48 @@
+before_commands:
+    - "composer install --no-dev --prefer-source"
+
+checks:
+    php:
+        excluded_dependencies:
+            - phpstan/phpstan
+
+tools:
+    external_code_coverage:
+        enabled: true
+        timeout: 300
+        filter:
+            excluded_paths: ["tests", "vendor"]
+    php_code_sniffer:
+        enabled: true
+        config:
+            standard: PSR2
+        filter:
+            paths: ["src/*", "tests/*"]
+            excluded_paths: []
+    php_cpd:
+        enabled: true
+        excluded_dirs: ["tests", "vendor"]
+    php_cs_fixer:
+        enabled: true
+        config:
+            level: all
+        filter:
+            paths: ["src/*", "tests/*"]
+    php_loc:
+        enabled: true
+        excluded_dirs: ["tests", "vendor"]
+    php_mess_detector:
+        enabled: true
+        config:
+            ruleset: phpmd.xml.dist
+            design_rules: { eval_expression: false }
+        filter:
+            paths: ["src/*"]
+    php_pdepend:
+        enabled: true
+        excluded_dirs: ["tests", "vendor"]
+    php_analyzer:
+        enabled: true
+        filter:
+            paths: ["src/*", "tests/*"]
+    sensiolabs_security_checker: true