feat(core): harden sessions settlement and credit activity

database/migrations/2026_07_22_120000_add_native_session_version_to_players.php

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+<?php
+
+use Illuminate\Support\Facades\Schema;
+use Illuminate\Database\Schema\Blueprint;
+use Illuminate\Database\Migrations\Migration;
+
+return new class extends Migration
+{
+    public function up(): void
+    {
+        Schema::table('players', function (Blueprint $table): void {
+            $table->unsignedInteger('native_session_version')
+                ->default(0)
+                ->after('native_token_version');
+        });
+    }
+
+    public function down(): void
+    {
+        Schema::table('players', function (Blueprint $table): void {
+            $table->dropColumn('native_session_version');
+        });
+    }
+};

database/migrations/2026_07_22_130000_add_admin_session_version_to_admin_users.php

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+<?php
+
+use Illuminate\Support\Facades\Schema;
+use Illuminate\Database\Schema\Blueprint;
+use Illuminate\Database\Migrations\Migration;
+
+return new class extends Migration
+{
+    public function up(): void
+    {
+        Schema::table('admin_users', function (Blueprint $table): void {
+            $table->unsignedInteger('admin_session_version')
+                ->default(0)
+                ->after('last_login_at');
+        });
+    }
+
+    public function down(): void
+    {
+        Schema::table('admin_users', function (Blueprint $table): void {
+            $table->dropColumn('admin_session_version');
+        });
+    }
+};