fix(database): index server settings and team membership lookups

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

database/migrations/2026_10_28_212642_add_indexes_for_server_settings_and_team_membership_lookups.php

@@ -0,0 +1,55 @@
+<?php
+
+use Illuminate\Database\Migrations\Migration;
+use Illuminate\Database\Schema\Blueprint;
+use Illuminate\Support\Facades\DB;
+use Illuminate\Support\Facades\Schema;
+
+return new class extends Migration
+{
+    public $withinTransaction = false;
+
+    public function up(): void
+    {
+        if (DB::getDriverName() === 'pgsql') {
+            DB::statement('CREATE INDEX CONCURRENTLY IF NOT EXISTS idx_server_settings_server_id ON server_settings (server_id)');
+            DB::statement('CREATE INDEX CONCURRENTLY IF NOT EXISTS idx_team_user_user_id ON team_user (user_id)');
+
+            return;
+        }
+
+        if (! Schema::hasIndex('server_settings', 'idx_server_settings_server_id')) {
+            Schema::table('server_settings', function (Blueprint $table) {
+                $table->index('server_id', 'idx_server_settings_server_id');
+            });
+        }
+
+        if (! Schema::hasIndex('team_user', 'idx_team_user_user_id')) {
+            Schema::table('team_user', function (Blueprint $table) {
+                $table->index('user_id', 'idx_team_user_user_id');
+            });
+        }
+    }
+
+    public function down(): void
+    {
+        if (DB::getDriverName() === 'pgsql') {
+            DB::statement('DROP INDEX CONCURRENTLY IF EXISTS idx_team_user_user_id');
+            DB::statement('DROP INDEX CONCURRENTLY IF EXISTS idx_server_settings_server_id');
+
+            return;
+        }
+
+        if (Schema::hasIndex('team_user', 'idx_team_user_user_id')) {
+            Schema::table('team_user', function (Blueprint $table) {
+                $table->dropIndex('idx_team_user_user_id');
+            });
+        }
+
+        if (Schema::hasIndex('server_settings', 'idx_server_settings_server_id')) {
+            Schema::table('server_settings', function (Blueprint $table) {
+                $table->dropIndex('idx_server_settings_server_id');
+            });
+        }
+    }
+};