Add complete Laravel LLM Gateway implementation

Core Features:
- Multi-provider support (OpenAI, Anthropic, DeepSeek, Gemini, Mistral)
- Provider service architecture with abstract base class
- Dynamic model discovery from provider APIs
- Encrypted per-user provider credentials storage

Admin Interface:
- Complete admin panel with Livewire components
- User management with CRUD operations
- API key management with testing capabilities
- Budget system with limits and reset schedules
- Usage logs with filtering and CSV export
- Model pricing management with cost calculator
- Dashboard with Chart.js visualizations

Database Schema:
- MariaDB migrations for all tables
- User provider credentials (encrypted)
- LLM request logging
- Budget tracking and rate limiting
- Model pricing configuration

API Implementation:
- OpenAI-compatible endpoints
- Budget checking middleware
- Rate limit enforcement
- Request logging jobs
- Cost calculation service

Testing:
- Unit tests for all provider services
- Provider factory tests
- Cost calculator tests

Documentation:
- Admin user seeder
- Model pricing seeder
- Configuration files

laravel-app/app/Jobs/ResetMonthlyBudgets.php

@@ -0,0 +1,52 @@
+<?php
+
+namespace App\Jobs;
+
+use App\Models\UserBudget;
+use Illuminate\Bus\Queueable;
+use Illuminate\Contracts\Queue\ShouldQueue;
+use Illuminate\Foundation\Bus\Dispatchable;
+use Illuminate\Queue\InteractsWithQueue;
+use Illuminate\Queue\SerializesModels;
+use Illuminate\Support\Facades\Log;
+
+class ResetMonthlyBudgets implements ShouldQueue
+{
+    use Dispatchable, InteractsWithQueue, Queueable, SerializesModels;
+
+    /**
+     * Execute the job.
+     */
+    public function handle(): void
+    {
+        $now = now();
+        $thisMonth = $now->startOfMonth();
+
+        // Find all budgets that need monthly reset
+        $budgets = UserBudget::where('month_started_at', '<', $thisMonth)
+            ->where('is_active', true)
+            ->get();
+
+        $resetCount = 0;
+
+        foreach ($budgets as $budget) {
+            $budget->current_month_spending = 0.0;
+            $budget->month_started_at = $thisMonth;
+            $budget->is_budget_exceeded = false;
+            $budget->last_alert_sent_at = null;
+            $budget->save();
+
+            $resetCount++;
+
+            Log::info('Monthly budget reset for user', [
+                'user_id' => $budget->user_id,
+                'previous_spending' => $budget->current_month_spending
+            ]);
+        }
+
+        Log::info('Monthly budgets reset', [
+            'count' => $resetCount,
+            'month' => $thisMonth->format('Y-m')
+        ]);
+    }
+}