feat(city): add player marketplace, mission journal, character customization and presence

- Player-to-player marketplace with listings, buying and selling
- Mission system with progress tracking and money rewards
- Character appearance customization (skin, hair, face, beard, accessory)
- Multiplayer presence feed showing nearby citizens in near-real-time
- Admin world dashboard with live platform metrics
- Bus and train transportation with temporary ride state
- Mobile joystick controls and minimap HUD
- Education bonus applied to work salary

app/Models/Character.php

@@ -7,6 +7,7 @@ use Illuminate\Database\Eloquent\Attributes\Fillable;
 use Illuminate\Database\Eloquent\Factories\HasFactory;
 use Illuminate\Database\Eloquent\Model;
 use Illuminate\Database\Eloquent\Relations\BelongsTo;
+use Illuminate\Database\Eloquent\Relations\BelongsToMany;
 use Illuminate\Database\Eloquent\Relations\HasMany;
 
 /**
@@ -19,7 +20,7 @@ use Illuminate\Database\Eloquent\Relations\HasMany;
     'user_id', 'city_id', 'name', 'skin', 'hair', 'shirt',
     'pos_x', 'pos_y', 'pos_z', 'money', 'energy', 'hunger', 'thirst', 'health',
     'state', 'job_id', 'house_id', 'education', 'exercise_count', 'is_online', 'last_tick_at',
-    'hospitalized_until',
+    'hospitalized_until', 'face', 'beard', 'accessory', 'ride_kind', 'ride_until',
 ])]
 class Character extends Model
 {
@@ -116,6 +117,28 @@ class Character extends Model
         return $this->hasMany(Building::class, 'owner_character_id');
     }
 
+    /**
+     * Marketplace listings published by this character.
+     *
+     * @return HasMany<MarketListing, $this>
+     */
+    public function listings(): HasMany
+    {
+        return $this->hasMany(MarketListing::class, 'seller_character_id');
+    }
+
+    /**
+     * Missions this character is tracking.
+     *
+     * @return BelongsToMany<Mission, $this>
+     */
+    public function missions(): BelongsToMany
+    {
+        return $this->belongsToMany(Mission::class, 'character_missions')
+            ->withPivot(['progress', 'is_completed', 'completed_at'])
+            ->withTimestamps();
+    }
+
     /**
      * Inventory stacks owned by this character.
      *
@@ -168,6 +191,9 @@ class Character extends Model
             'education' => 0,
             'exercise_count' => 0,
             'is_online' => false,
+            'face' => random_int(1, 3),
+            'beard' => random_int(0, 2),
+            'accessory' => random_int(0, 2),
         ]);
 
         // Starter kit so new citizens can eat, drink and build immediately.
@@ -207,6 +233,10 @@ class Character extends Model
             'is_online' => 'boolean',
             'last_tick_at' => 'datetime',
             'hospitalized_until' => 'datetime',
+            'face' => 'integer',
+            'beard' => 'integer',
+            'accessory' => 'integer',
+            'ride_until' => 'datetime',
         ];
     }