Add MLS by HansonXyz plugin for MLS Grid API integration

Features:
- Full sync of NorthStar MLS properties via MLS Grid API v2
- Incremental sync using ModificationTimestamp
- Local media download and storage
- Rate limit compliance (2 req/sec, 7200/hr, 40000/day)
- Sync state tracking with resume capability
- WP-CLI commands: test, sync, status, stats, cache
- Admin settings page with manual sync triggers
- Public API functions: mls_get_properties, mls_get_property, etc.

Database tables:
- mls_properties: Listing data with full field mapping
- mls_media: Downloaded images
- mls_sync_state: Sync progress tracking
- mls_rate_limits: API usage tracking
- mls_sync_log: Debug logging

Documentation:
- docs/CLAUDE.md: AI development guide
- docs/API.md: MLS Grid API reference
- docs/USAGE.md: User documentation

Tested: Connection, auth, sync 10 records, media download verified

🤖 Generated with [Claude Code](https://claude.com/claude-code)

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

wp-content/plugins/mls-by-hansonxyz/includes/class-mls-deactivator.php

@@ -0,0 +1,50 @@
+<?php
+/**
+ * Plugin deactivator class
+ */
+
+if (!defined('ABSPATH')) {
+    exit;
+}
+
+class MLS_Deactivator {
+
+    /**
+     * Run on plugin deactivation
+     */
+    public static function deactivate() {
+        // Clear scheduled cron events
+        self::clear_cron();
+
+        // Flush rewrite rules
+        flush_rewrite_rules();
+    }
+
+    /**
+     * Clear all scheduled cron events
+     */
+    private static function clear_cron() {
+        // Clear property sync cron
+        $timestamp = wp_next_scheduled('mls_sync_properties');
+        if ($timestamp) {
+            wp_unschedule_event($timestamp, 'mls_sync_properties');
+        }
+
+        // Clear media sync cron
+        $timestamp = wp_next_scheduled('mls_sync_media');
+        if ($timestamp) {
+            wp_unschedule_event($timestamp, 'mls_sync_media');
+        }
+
+        // Clear cleanup cron
+        $timestamp = wp_next_scheduled('mls_cleanup');
+        if ($timestamp) {
+            wp_unschedule_event($timestamp, 'mls_cleanup');
+        }
+
+        // Clear all hooks with our prefix
+        wp_clear_scheduled_hook('mls_sync_properties');
+        wp_clear_scheduled_hook('mls_sync_media');
+        wp_clear_scheduled_hook('mls_cleanup');
+    }
+}