+++fix: add thumbnail support for territori

app/Services/TerritorioThumbnailService.php

@@ -0,0 +1,61 @@
+<?php
+
+namespace App\Services;
+
+use Illuminate\Support\Facades\Storage;
+
+class TerritorioThumbnailService
+{
+    /**
+     * Generate a PNG thumbnail of the first page of a PDF stored on the public disk.
+     *
+     * @param  string  $pdfStoragePath  Relative path within the public disk (e.g. "territori-pdf/abc.pdf")
+     * @return string|null  Relative path of the saved thumbnail, or null on failure
+     */
+    public function generate(string $pdfStoragePath): ?string
+    {
+        $pdfAbsPath = Storage::disk('public')->path($pdfStoragePath);
+
+        if (!file_exists($pdfAbsPath)) {
+            return null;
+        }
+
+        $tempPrefix = sys_get_temp_dir() . '/terr_thumb_' . uniqid();
+
+        exec(
+            'pdftoppm -r 72 -png -l 1 ' . escapeshellarg($pdfAbsPath) . ' ' . escapeshellarg($tempPrefix),
+            $output,
+            $exitCode
+        );
+
+        // pdftoppm may produce -1.png, -01.png or even -001.png depending on page count
+        $generated = null;
+        foreach (['-1.png', '-01.png', '-001.png'] as $suffix) {
+            $candidate = $tempPrefix . $suffix;
+            if (file_exists($candidate)) {
+                $generated = $candidate;
+                break;
+            }
+        }
+
+        if (!$generated) {
+            return null;
+        }
+
+        $thumbRelPath = 'territori-thumbnails/' . basename($pdfStoragePath, '.pdf') . '.png';
+        Storage::disk('public')->put($thumbRelPath, file_get_contents($generated));
+        unlink($generated);
+
+        return $thumbRelPath;
+    }
+
+    /**
+     * Delete an existing thumbnail from the public disk.
+     */
+    public function delete(string $thumbnailPath): void
+    {
+        if ($thumbnailPath) {
+            Storage::disk('public')->delete($thumbnailPath);
+        }
+    }
+}