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/squizlabs/php_codesniffer/tests/EndToEnd/Fixtures/ClassOneWithoutStyleError.inc

@@ -0,0 +1,18 @@
+<?php
+
+/**
+ * Class containing no style errors according to the end-to-end tests phpcs.xml.dist.
+ *
+ * @copyright 2025 PHPCSStandards and contributors
+ * @license   https://github.com/PHPCSStandards/PHP_CodeSniffer/blob/HEAD/licence.txt BSD Licence
+ */
+
+namespace PHP_CodeSniffer\Tests\EndToEnd\Fixtures;
+
+class ClassOneWithoutStyleError
+{
+    private function foo()
+    {
+        return 'bar';
+    }
+}

vendor/squizlabs/php_codesniffer/tests/EndToEnd/Fixtures/ClassTwoWithoutStyleError.inc

@@ -0,0 +1,20 @@
+<?php
+
+/**
+ * Class containing no style errors.
+ *
+ * @copyright 2025 PHPCSStandards and contributors
+ * @license   https://github.com/PHPCSStandards/PHP_CodeSniffer/blob/HEAD/licence.txt BSD Licence
+ */
+
+namespace PHP_CodeSniffer\Tests\EndToEnd\Fixtures;
+
+class ClassTwoWithoutStyleError
+{
+    /**
+     * A property.
+     *
+     * @var string
+     */
+    private $bar = 'baz';
+}

vendor/squizlabs/php_codesniffer/tests/EndToEnd/Fixtures/ClassWithStyleError.inc

@@ -0,0 +1,22 @@
+<?php
+
+/**
+ * Class containing a simple style error that phpcbf can fix.
+ *
+ * @copyright 2025 PHPCSStandards and contributors
+ * @license   https://github.com/PHPCSStandards/PHP_CodeSniffer/blob/HEAD/licence.txt BSD Licence
+ */
+
+namespace PHP_CodeSniffer\Tests\EndToEnd\Fixtures;
+
+class ClassWithStyleError
+{
+    /**
+     * The bracket for this function is misaligned and this can be automatically fixed by phpcbf.
+     *
+     * @return string
+     */
+    private function foo() {
+        return 'bar';
+    }
+}

vendor/squizlabs/php_codesniffer/tests/EndToEnd/Fixtures/endtoend.xml.dist

@@ -0,0 +1,13 @@
+<?xml version="1.0"?>
+<ruleset xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" name="EndToEndTests" xsi:noNamespaceSchemaLocation="phpcs.xsd">
+    <description>The coding standard for end to end tests.</description>
+
+    <rule ref="PSR12"/>
+
+    <file>.</file>
+
+    <arg name="basepath" value="."/>
+    <arg name="colors"/>
+    <arg name="parallel" value="75"/>
+    <arg value="p"/>
+</ruleset>

vendor/squizlabs/php_codesniffer/tests/EndToEnd/outofmemory_test.sh

@@ -0,0 +1,25 @@
+#!/usr/bin/env bash
+
+function tear_down() {
+  rm -f tests/EndToEnd/Fixtures/*.fixed
+}
+
+function test_phpcs_out_of_memory_error_handling() {
+  OUTPUT="$(bin/phpcs -d memory_limit=4M --standard=tests/EndToEnd/Fixtures/endtoend.xml.dist tests/EndToEnd/Fixtures/)"
+  # Exit code may be 255 or 139 depending on the PHP version, but the exact code is not our concern, just that it's non-zero.
+  assert_unsuccessful_code
+
+  assert_contains "The PHP_CodeSniffer \"phpcs\" command ran out of memory." "$OUTPUT"
+  assert_contains "Either raise the \"memory_limit\" of PHP in the php.ini file or raise the memory limit at runtime" "$OUTPUT"
+  assert_contains "using \"phpcs -d memory_limit=512M\" (replace 512M with the desired memory limit)." "$OUTPUT"
+}
+
+function test_phpcbf_out_of_memory_error_handling() {
+  OUTPUT="$(bin/phpcbf -d memory_limit=4M --standard=tests/EndToEnd/Fixtures/endtoend.xml.dist tests/EndToEnd/Fixtures/ --suffix=.fixed)"
+  # Exit code may be 255 or 139 depending on the PHP version, but the exact code is not our concern, just that it's non-zero.
+  assert_unsuccessful_code
+
+  assert_contains "The PHP_CodeSniffer \"phpcbf\" command ran out of memory." "$OUTPUT"
+  assert_contains "Either raise the \"memory_limit\" of PHP in the php.ini file or raise the memory limit at runtime" "$OUTPUT"
+  assert_contains "using \"phpcbf -d memory_limit=512M\" (replace 512M with the desired memory limit)." "$OUTPUT"
+}

vendor/squizlabs/php_codesniffer/tests/EndToEnd/phpcbf_test.sh

@@ -0,0 +1,38 @@
+#!/usr/bin/env bash
+
+function tear_down() {
+  rm -rf tests/EndToEnd/Fixtures/*.fixed
+}
+
+function test_phpcbf_is_working() {
+  OUTPUT="$(bin/phpcbf --no-cache --standard=tests/EndToEnd/Fixtures/endtoend.xml.dist tests/EndToEnd/Fixtures/ClassOneWithoutStyleError.inc tests/EndToEnd/Fixtures/ClassTwoWithoutStyleError.inc)"
+
+  assert_successful_code
+  assert_contains "No violations were found" "$OUTPUT"
+}
+
+function test_phpcbf_is_working_in_parallel() {
+  OUTPUT="$(bin/phpcbf --no-cache --parallel=2 --standard=tests/EndToEnd/Fixtures/endtoend.xml.dist tests/EndToEnd/Fixtures/ClassOneWithoutStyleError.inc tests/EndToEnd/Fixtures/ClassTwoWithoutStyleError.inc)"
+
+  assert_successful_code
+  assert_contains "No violations were found" "$OUTPUT"
+}
+
+function test_phpcbf_returns_error_on_issues() {
+  OUTPUT="$(bin/phpcbf --no-colors --no-cache --suffix=.fixed --standard=tests/EndToEnd/Fixtures/endtoend.xml.dist tests/EndToEnd/Fixtures/ClassWithStyleError.inc)"
+  assert_exit_code 1
+
+  assert_contains "F 1 / 1 (100%)" "$OUTPUT"
+  assert_contains "A TOTAL OF 1 ERROR WERE FIXED IN 1 FILE" "$OUTPUT"
+}
+
+function test_phpcbf_bug_1112() {
+  # See https://github.com/PHPCSStandards/PHP_CodeSniffer/issues/1112
+  if [[ "$(uname)" == "Darwin" ]]; then
+    # Perform some magic with `& fg` to prevent the processes from turning into a background job.
+    assert_successful_code "$(bash -ic 'bash --init-file <(echo "echo \"Subprocess\"") -c "bin/phpcbf --no-cache --parallel=2 --standard=tests/EndToEnd/Fixtures/endtoend.xml.dist tests/EndToEnd/Fixtures/ClassOneWithoutStyleError.inc tests/EndToEnd/Fixtures/ClassTwoWithoutStyleError.inc" & fg')"
+  else
+    # This is not needed on Linux / GitHub Actions
+    assert_successful_code "$(bash -ic 'bash --init-file <(echo "echo \"Subprocess\"") -c "bin/phpcbf --no-cache --parallel=2 --standard=tests/EndToEnd/Fixtures/endtoend.xml.dist tests/EndToEnd/Fixtures/ClassOneWithoutStyleError.inc tests/EndToEnd/Fixtures/ClassTwoWithoutStyleError.inc"')"
+  fi
+}

vendor/squizlabs/php_codesniffer/tests/EndToEnd/phpcs_test.sh

@@ -0,0 +1,28 @@
+#!/usr/bin/env bash
+
+function test_phpcs_is_working() {
+  assert_successful_code "$(bin/phpcs --no-cache --standard=tests/EndToEnd/Fixtures/endtoend.xml.dist tests/EndToEnd/Fixtures/ClassOneWithoutStyleError.inc tests/EndToEnd/Fixtures/ClassTwoWithoutStyleError.inc)"
+}
+
+function test_phpcs_is_working_in_parallel() {
+  assert_successful_code "$(bin/phpcs --no-cache --parallel=2 --standard=tests/EndToEnd/Fixtures/endtoend.xml.dist tests/EndToEnd/Fixtures/ClassOneWithoutStyleError.inc tests/EndToEnd/Fixtures/ClassTwoWithoutStyleError.inc)"
+}
+
+function test_phpcs_returns_error_on_issues() {
+  OUTPUT="$(bin/phpcs --no-colors --no-cache --standard=tests/EndToEnd/Fixtures/endtoend.xml.dist tests/EndToEnd/Fixtures/ClassWithStyleError.inc)"
+  assert_exit_code 2
+
+  assert_contains "E 1 / 1 (100%)" "$OUTPUT"
+  assert_contains "FOUND 1 ERROR AFFECTING 1 LINE" "$OUTPUT"
+}
+
+function test_phpcs_bug_1112() {
+  # See https://github.com/PHPCSStandards/PHP_CodeSniffer/issues/1112
+    if [[ "$(uname)" == "Darwin" ]]; then
+      # Perform some magic with `& fg` to prevent the processes from turning into a background job.
+      assert_successful_code "$(bash -ic 'bash --init-file <(echo "echo \"Subprocess\"") -c "bin/phpcs --no-cache --parallel=2 --standard=tests/EndToEnd/Fixtures/endtoend.xml.dist tests/EndToEnd/Fixtures/ClassOneWithoutStyleError.inc tests/EndToEnd/Fixtures/ClassTwoWithoutStyleError.inc" & fg')"
+    else
+      # This is not needed on Linux / GitHub Actions
+      assert_successful_code "$(bash -ic 'bash --init-file <(echo "echo \"Subprocess\"") -c "bin/phpcs --no-cache --parallel=2 --standard=tests/EndToEnd/Fixtures/endtoend.xml.dist tests/EndToEnd/Fixtures/ClassOneWithoutStyleError.inc tests/EndToEnd/Fixtures/ClassTwoWithoutStyleError.inc"')"
+    fi
+}