migrations and models adjusted

database/migrations/2026_08_14_164132_create_rooms_table.php

@@ -15,6 +15,7 @@ return new class extends Migration
             $table->uuid('id')->primary();
             $table->string('title', 100)->nullable();
             $table->json('deck_config');
+            $table->string('join_code', 6)->unique();
             $table->unsignedInteger('current_round')->default(1);
             $table->timestamp('revealed_at')->nullable();
             $table->unsignedBigInteger('state_version')->default(1);

database/migrations/2026_08_14_164139_create_players_table.php

@@ -17,8 +17,9 @@ return new class extends Migration
             $table->foreignId('user_id')->nullable()->constrained()->nullOnDelete();
             $table->string('name', 50);
             $table->boolean('is_moderator')->default(false);
+            $table->timestamp('last_seen_at')->nullable();
             $table->timestamps();
-            $table->unique(['room_id', 'user_id']);
+            $table->unique(['room_id', 'name']);
         });
     }
 

database/migrations/2026_08_14_164147_create_votes_table.php

@@ -18,7 +18,7 @@ return new class extends Migration
             $table->unsignedInteger('round');
             $table->string('value', 16);
             $table->timestamps();
-            $table->unique(['player_id', 'room']);
+            $table->unique(['player_id', 'room_id', 'round']);
         });
     }