Batch 2: Workload heatmap + Site PSauto + VIN search

═══ Workload heatmap (Încărcare STO) ═══
- /app/workload custom Page (group Analiză)
- Săptămână (Lu-Du) × posturi → matrice ore programate
- Heatmap colorat: verde→galben→roșu pe ratio capacity (10h/zi)
- Navigare săpt anterior/curent/următor
- Programări fără pod → row '— fără pod —' separat

═══ Site PSauto (landing public) ═══
- / pe tenant subdomain → resources/views/site/landing.blade.php
- Hero cu logo + nume + slogan; gradient theme color
- Servicii (din settings.services) — grid card-uri
- Locație/contact + program lucru standardizat
- Mărci suportate (din settings.cars)
- CTA: phone + email
- Footer cu tenant name + powered by AutoCRM

═══ VIN search ═══
- VinDecoder service: WMI hardcoded (24 producători EU/Asia/USA)
  + year codes (2001-2026) — pure offline, fără API extern
- /app/vin-search Page (group Depozit) cu:
  • Input VIN cu uppercase + monospace
  • Decode → producător/țară/an/serial
  • Match VIN-uri din baza Vehicles
  • Search piese din catalog (live debounce 300ms)
- Rezultatele linkează la editor Vehicle/Part

Total tenant routes: 102.

app/Filament/Tenant/Pages/VinSearch.php

@@ -0,0 +1,56 @@
+<?php
+
+namespace App\Filament\Tenant\Pages;
+
+use App\Models\Tenant\Part;
+use App\Models\Tenant\Vehicle;
+use App\Services\VinDecoder;
+use Filament\Pages\Page;
+
+class VinSearch extends Page
+{
+    protected static string|\BackedEnum|null $navigationIcon = 'heroicon-o-magnifying-glass';
+
+    protected static ?string $navigationLabel = 'VIN-căutare';
+
+    protected static string|\UnitEnum|null $navigationGroup = 'Depozit';
+
+    protected static ?int $navigationSort = 41;
+
+    protected static ?string $title = 'VIN căutare & piese';
+
+    protected string $view = 'filament.tenant.pages.vin-search';
+
+    public string $vin = '';
+
+    public ?array $decoded = null;
+
+    public string $partsQuery = '';
+
+    public function decode(): void
+    {
+        if (! $this->vin) return;
+        $this->decoded = app(VinDecoder::class)->decode($this->vin);
+    }
+
+    public function vehicleMatches(): \Illuminate\Support\Collection
+    {
+        if (! $this->vin) return collect();
+        return Vehicle::with('client')
+            ->where('vin', 'like', '%' . $this->vin . '%')
+            ->limit(10)->get();
+    }
+
+    public function partsResults(): \Illuminate\Support\Collection
+    {
+        $q = trim($this->partsQuery);
+        if ($q === '') return collect();
+        return Part::where('is_active', true)
+            ->where(function ($query) use ($q) {
+                $query->where('name', 'like', "%{$q}%")
+                    ->orWhere('article', 'like', "%{$q}%")
+                    ->orWhere('brand', 'like', "%{$q}%");
+            })
+            ->limit(20)->get();
+    }
+}