Add hover pins for clustered properties, disable grouping under 30 markers

- Add data-lat/data-lng attributes to MLS property cards
- Create temporary highlighted pin on card hover when marker is clustered
- Show individual pins (no grouping) when <= 30 properties in viewport
- Add markerLayer for unclustered markers to bypass client-side clustering
- Show loading spinner immediately on map move to abort image loads

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

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

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

@@ -65,6 +65,33 @@ class MLS_Cluster {
         $this->db = $db;
     }
 
+    /**
+     * Get state filter SQL clause
+     *
+     * @return string SQL clause or empty string
+     */
+    private function get_state_filter() {
+        if (!defined('MLS_ALLOWED_STATES') || empty(MLS_ALLOWED_STATES)) {
+            return '';
+        }
+
+        global $wpdb;
+        $states = array_map(function($state) use ($wpdb) {
+            return $wpdb->prepare('%s', $state);
+        }, MLS_ALLOWED_STATES);
+        return 'state_or_province IN (' . implode(',', $states) . ')';
+    }
+
+    /**
+     * Get the TBD address exclusion filter
+     * Excludes properties with "TBD" as street number
+     *
+     * @return string SQL clause
+     */
+    private function get_tbd_exclusion_filter() {
+        return "(street_number IS NULL OR (street_number != 'TBD' AND street_number NOT LIKE 'TBD %'))";
+    }
+
     /**
      * Encode latitude/longitude to geohash
      *
@@ -225,6 +252,15 @@ class MLS_Cluster {
         $where = array('mlg_can_view = 1', 'latitude IS NOT NULL', 'longitude IS NOT NULL');
         $values = array();
 
+        // Add state filter (MN, IA only)
+        $state_filter = $this->get_state_filter();
+        if ($state_filter) {
+            $where[] = $state_filter;
+        }
+
+        // Exclude TBD addresses
+        $where[] = $this->get_tbd_exclusion_filter();
+
         if ($args['status']) {
             $where[] = 'standard_status = %s';
             $values[] = $args['status'];
@@ -276,8 +312,8 @@ class MLS_Cluster {
             $total = (int) $wpdb->get_var($count_sql);
         }
 
-        // If very few properties, always show individual markers (no grouping)
-        if ($total < self::MIN_FOR_GROUPING) {
+        // If few properties, always show individual markers (no grouping)
+        if ($total <= self::MIN_FOR_GROUPING) {
             return $this->get_individual_markers($where_sql, $values, $total);
         }
 
@@ -541,6 +577,15 @@ class MLS_Cluster {
         $where = array('mlg_can_view = 1', 'latitude IS NOT NULL', 'longitude IS NOT NULL');
         $values = array();
 
+        // Add state filter (MN, IA only)
+        $state_filter = $this->get_state_filter();
+        if ($state_filter) {
+            $where[] = $state_filter;
+        }
+
+        // Exclude TBD addresses
+        $where[] = $this->get_tbd_exclusion_filter();
+
         if (!empty($args['status'])) {
             $where[] = 'standard_status = %s';
             $values[] = $args['status'];