Initial plugin setup (v0.0.1)

- Create initial WordPress plugin structure
- Add Prometheus metrics collector with default metrics
- Implement authenticated /metrics endpoint with Bearer token
- Add license management integration
- Create admin settings page under Settings > Metrics
- Set up Gitea CI/CD pipeline for automated releases
- Add extensibility via wp_prometheus_collect_metrics hook

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

assets/js/admin.js

@@ -0,0 +1,100 @@
+/**
+ * WP Prometheus Admin JavaScript
+ *
+ * @package WP_Prometheus
+ */
+
+(function($) {
+    'use strict';
+
+    $(document).ready(function() {
+        // Validate license button.
+        $('#wp-prometheus-validate-license').on('click', function(e) {
+            e.preventDefault();
+            performLicenseAction('wp_prometheus_validate_license', 'Validating...');
+        });
+
+        // Activate license button.
+        $('#wp-prometheus-activate-license').on('click', function(e) {
+            e.preventDefault();
+            performLicenseAction('wp_prometheus_activate_license', 'Activating...');
+        });
+
+        // Regenerate token button.
+        $('#wp-prometheus-regenerate-token').on('click', function(e) {
+            e.preventDefault();
+            if (confirm('Are you sure you want to regenerate the auth token? You will need to update your Prometheus configuration.')) {
+                var newToken = generateToken(32);
+                $('#wp_prometheus_auth_token').val(newToken);
+            }
+        });
+
+        /**
+         * Perform a license action via AJAX.
+         *
+         * @param {string} action AJAX action name.
+         * @param {string} message Loading message.
+         */
+        function performLicenseAction(action, message) {
+            var $spinner = $('#wp-prometheus-license-spinner');
+            var $message = $('#wp-prometheus-license-message');
+
+            $spinner.addClass('is-active');
+            $message.hide();
+
+            $.ajax({
+                url: wpPrometheus.ajaxUrl,
+                type: 'POST',
+                data: {
+                    action: action,
+                    nonce: wpPrometheus.nonce
+                },
+                success: function(response) {
+                    $spinner.removeClass('is-active');
+
+                    if (response.success) {
+                        $message
+                            .removeClass('notice-error')
+                            .addClass('notice notice-success')
+                            .html('<p>' + response.data.message + '</p>')
+                            .show();
+
+                        // Reload page after successful validation/activation.
+                        setTimeout(function() {
+                            location.reload();
+                        }, 1500);
+                    } else {
+                        $message
+                            .removeClass('notice-success')
+                            .addClass('notice notice-error')
+                            .html('<p>' + (response.data.message || 'An error occurred.') + '</p>')
+                            .show();
+                    }
+                },
+                error: function() {
+                    $spinner.removeClass('is-active');
+                    $message
+                        .removeClass('notice-success')
+                        .addClass('notice notice-error')
+                        .html('<p>Connection error. Please try again.</p>')
+                        .show();
+                }
+            });
+        }
+
+        /**
+         * Generate a random token.
+         *
+         * @param {number} length Token length.
+         * @return {string} Generated token.
+         */
+        function generateToken(length) {
+            var charset = 'abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789';
+            var token = '';
+            for (var i = 0; i < length; i++) {
+                token += charset.charAt(Math.floor(Math.random() * charset.length));
+            }
+            return token;
+        }
+    });
+})(jQuery);