Implement launch blockers and MLS state filter

- Add MLS state filter for MN/IA only queries
- Add property inquiry form auto-population with read-only display
- Update broker info and office hours in footer
- Remove Bridge Realty text from about page
- Update service area to Minnesota and Iowa
- Add HomeProz listing identification (is_homeproz column)
- Add dynamic featured listings on front page
- Add gallery thumbnail preloading and loading spinners
- Update FEATURES_PENDING with completion status

🤖 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-db.php

@@ -11,9 +11,9 @@ class MLS_DB {
 
     /**
      * Schema version for index migrations
-     * Increment this when adding new indexes
+     * Increment this when adding new indexes or columns
      */
-    const SCHEMA_VERSION = 2;
+    const SCHEMA_VERSION = 3;
 
     /**
      * Get table name with prefix
@@ -126,6 +126,7 @@ class MLS_DB {
             list_office_key VARCHAR(50) DEFAULT NULL,
             list_office_mls_id VARCHAR(50) DEFAULT NULL,
             list_office_name VARCHAR(150) DEFAULT NULL,
+            is_homeproz TINYINT(1) NOT NULL DEFAULT 0,
 
             photos_count INT(5) DEFAULT 0,
             modification_timestamp DATETIME NOT NULL,
@@ -332,8 +333,41 @@ class MLS_DB {
             update_option('mls_schema_version', 2);
         }
 
+        // Migration to schema version 3: Add is_homeproz column and index
+        if ($current_schema < 3) {
+            $table_properties = $wpdb->prefix . MLS_TABLE_PROPERTIES;
+
+            // Check if column exists
+            $column_exists = $wpdb->get_var($wpdb->prepare(
+                "SELECT COUNT(*) FROM INFORMATION_SCHEMA.COLUMNS
+                 WHERE TABLE_SCHEMA = %s AND TABLE_NAME = %s AND COLUMN_NAME = 'is_homeproz'",
+                DB_NAME,
+                $table_properties
+            ));
+
+            if (!$column_exists) {
+                $wpdb->query("ALTER TABLE {$table_properties} ADD COLUMN is_homeproz TINYINT(1) NOT NULL DEFAULT 0 AFTER list_office_name");
+            }
+
+            // Add index if not exists
+            $existing_indexes = self::get_existing_indexes($table_properties);
+            if (!isset($existing_indexes['idx_is_homeproz'])) {
+                $wpdb->query("ALTER TABLE {$table_properties} ADD INDEX idx_is_homeproz (is_homeproz)");
+            }
+
+            // Update existing HomeProz listings
+            if (defined('MLS_HOMEPROZ_OFFICE_ID')) {
+                $wpdb->query($wpdb->prepare(
+                    "UPDATE {$table_properties} SET is_homeproz = 1 WHERE list_office_mls_id = %s",
+                    MLS_HOMEPROZ_OFFICE_ID
+                ));
+            }
+
+            update_option('mls_schema_version', 3);
+        }
+
         // Future migrations go here:
-        // if ($current_schema < 3) { ... }
+        // if ($current_schema < 4) { ... }
     }
 
     /**