Initial commit: Any-LLM Gateway with Laravel Admin Interface

- Any-LLM Gateway setup with Docker Compose
- Laravel 11 admin interface with Livewire
- Dashboard with usage statistics and charts
- Gateway Users management with budget tracking
- API Keys management with revocation
- Budget templates with assignment
- Usage Logs with filtering and CSV export
- Model Pricing management with calculator
- PostgreSQL database integration
- Complete authentication system for admins

laravel-app/app/Models/Budget.php

@@ -0,0 +1,48 @@
+<?php
+
+namespace App\Models;
+
+use Illuminate\Database\Eloquent\Model;
+
+class Budget extends Model
+{
+    protected $primaryKey = 'budget_id';
+    public $incrementing = false;
+    protected $keyType = 'string';
+
+    protected $fillable = [
+        'budget_id',
+        'max_budget',
+        'budget_duration_sec',
+    ];
+
+    protected function casts(): array
+    {
+        return [
+            'max_budget' => 'double',
+            'budget_duration_sec' => 'integer',
+            'created_at' => 'datetime',
+            'updated_at' => 'datetime',
+        ];
+    }
+
+    public function gatewayUsers()
+    {
+        return $this->hasMany(GatewayUser::class, 'budget_id', 'budget_id');
+    }
+
+    public function getMaxBudgetFormattedAttribute()
+    {
+        return '$' . number_format($this->max_budget, 2);
+    }
+
+    public function getDurationHumanAttribute()
+    {
+        if (!$this->budget_duration_sec) return 'No limit';
+        
+        $days = floor($this->budget_duration_sec / 86400);
+        $hours = floor(($this->budget_duration_sec % 86400) / 3600);
+        
+        return "{$days}d {$hours}h";
+    }
+}