feat: add Central API clients, bot rate limiting, and admin API UI

- Add ITK_HP_API and ITK_Bot_API static classes with queue/flush/cron
- Add WP-Cron (5 min) + shutdown flush for both API queues
- Bot Blocker and Honeypot now queue events to their respective APIs
- Admin: Bot Blocker tab gains Central Bot API settings panel
  (enable, URL, token, test connection, flush queue, historical sync)
- Admin: Honeypot tab gains Central Honeypot API settings panel
- Admin JS: AJAX handlers for Test Connection and Flush Now buttons
- Admin CSS: API card styles (status badge, notices, footer controls)
- Add .gitignore (excludes bot-api/ which lives in CloudHost/bot-api)

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

includes/class-itk-bot-blocker.php

@@ -124,7 +124,7 @@ class ITK_Bot_Blocker {
         if ($count >= $limit) {
             // Over the limit – log and send 429.
             if (!empty($options['log_blocked_attempts'])) {
-                ITK_Database::log_bot([
+                $event = [
                     'ip'       => $ip,
                     'ua'       => $ua,
                     'referrer' => '',
@@ -132,7 +132,9 @@ class ITK_Bot_Blocker {
                     'bot_type' => $name,
                     'reason'   => "Rate limited: {$count}/{$limit} req/min",
                     'action'   => 'rate_limited',
-                ]);
+                ];
+                ITK_Database::log_bot($event);
+                ITK_Bot_API::queue($event);
             }
             status_header(429);
             header('Retry-After: 60');
@@ -157,7 +159,7 @@ class ITK_Bot_Blocker {
         array  $options
     ): void {
         if (!empty($options['log_blocked_attempts'])) {
-            ITK_Database::log_bot([
+            $event = [
                 'ip'       => $ip,
                 'ua'       => $ua,
                 'referrer' => $referrer,
@@ -165,7 +167,9 @@ class ITK_Bot_Blocker {
                 'bot_type' => $bot_type,
                 'reason'   => $reason,
                 'action'   => 'blocked',
-            ]);
+            ];
+            ITK_Database::log_bot($event);
+            ITK_Bot_API::queue($event);
         }
 
         $code     = $options['response_code'] ?? '403';