Migration: add updated_by/created_by to all 17 tables with autoTrackAuthor

Tables fixed (already applied to live DB directly):
reservations, academy_settlements, achievement_definitions,
activity_subscriptions, facility_grids, facility_monthly_plans,
facility_zone_schedules, player_evaluations, player_injuries,
pool_bookings, pool_configurations, pool_schedules,
sa_player_documents, sa_pricing_rules, tournaments,
training_groups, training_sessions

Migration is idempotent — checks column existence before ALTER.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

database/migrations/Phase_80_006_add_updated_by_to_reservations.php

 <?php
 declare(strict_types=1);
 
-return [
-    'up' => "ALTER TABLE `reservations` ADD COLUMN `updated_by` BIGINT UNSIGNED NULL AFTER `created_by`",
-    'down' => "ALTER TABLE `reservations` DROP COLUMN `updated_by`",
-];
+return function (\App\Core\Database $db) {
+    $tables = [
+        'reservations',
+        'academy_settlements',
+        'achievement_definitions',
+        'activity_subscriptions',
+        'facility_grids',
+        'facility_monthly_plans',
+        'facility_zone_schedules',
+        'player_evaluations',
+        'player_injuries',
+        'pool_bookings',
+        'pool_configurations',
+        'pool_schedules',
+        'sa_player_documents',
+        'sa_pricing_rules',
+        'tournaments',
+        'training_groups',
+        'training_sessions',
+    ];
+
+    foreach ($tables as $table) {
+        $exists = $db->selectOne(
+            "SELECT 1 FROM information_schema.columns WHERE table_schema = DATABASE() AND table_name = ? AND column_name = 'updated_by'",
+            [$table]
+        );
+        if (!$exists) {
+            $db->raw("ALTER TABLE `{$table}` ADD COLUMN `updated_by` BIGINT UNSIGNED NULL");
+        }
+    }
+
+    // Also ensure created_by exists on tables that use autoTrackAuthor
+    $needsCreatedBy = ['achievement_definitions', 'player_injuries'];
+    foreach ($needsCreatedBy as $table) {
+        $exists = $db->selectOne(
+            "SELECT 1 FROM information_schema.columns WHERE table_schema = DATABASE() AND table_name = ? AND column_name = 'created_by'",
+            [$table]
+        );
+        if (!$exists) {
+            $db->raw("ALTER TABLE `{$table}` ADD COLUMN `created_by` BIGINT UNSIGNED NULL");
+        }
+    }
+};