feat(world): add persistent citizen simulation with needs, jobs, and social features

- Adds Character model with survival needs (hunger, thirst, energy) and state machine
- Implements city:tick world ticker for offline progression every minute
- Adds city territory expansion and building construction system
- Introduces job economy, inventory, and transaction audit trail
- Adds social graph (friends, marriage, children) and character chat
- Implements admin approval workflow for new registrations
- Adds hospital admission system for traffic accidents
- Includes comprehensive feature tests and world seeders

database/migrations/2026_10_18_000200_create_cities_table.php

@@ -0,0 +1,42 @@
+<?php
+
+use Illuminate\Database\Migrations\Migration;
+use Illuminate\Database\Schema\Blueprint;
+use Illuminate\Support\Facades\Schema;
+
+/**
+ * Creates the "cities" table.
+ *
+ * Each city owns a rectangular territory (bounds) used to generate the
+ * street layout, clamp movement and limit construction. Cities can be
+ * expanded or created by administrators as the platform grows.
+ */
+return new class extends Migration
+{
+    /**
+     * Run the migrations.
+     */
+    public function up(): void
+    {
+        Schema::create('cities', function (Blueprint $table): void {
+            $table->id();
+            $table->string('name', 120);
+            $table->string('slug', 120)->unique();
+            $table->decimal('bounds_min_x', 10, 2)->default(-80);
+            $table->decimal('bounds_max_x', 10, 2)->default(80);
+            $table->decimal('bounds_min_z', 10, 2)->default(-80);
+            $table->decimal('bounds_max_z', 10, 2)->default(80);
+            $table->boolean('is_active')->default(true)->index();
+            $table->unsignedInteger('expansions')->default(0);
+            $table->timestamps();
+        });
+    }
+
+    /**
+     * Reverse the migrations.
+     */
+    public function down(): void
+    {
+        Schema::dropIfExists('cities');
+    }
+};