Fix PDF export to render steps for all tutorial sections

collectBookData() was only extracting steps for 3 hardcoded sections
(membership, sports-activity, treasury) using regex on view files.
All other sections (45 of 48) were passed without steps, rendering
only subtitle text in the PDF. Now calls TutorialRegistry::getSteps()
for every tutorial in every section.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

app/Modules/Tutorials/Controllers/TutorialController.php

@@ -618,6 +618,9 @@ class TutorialController extends Controller
                     $raw = file_get_contents($viewFile);
                     $extracted = $this->extractTutorialSteps($raw);
                 }
+                if (empty($extracted['steps'])) {
+                    $extracted['steps'] = TutorialRegistry::getSteps($key, $slug);
+                }
                 $tutorials[$slug] = array_merge($tutorial, [
                     'steps' => $extracted['steps'],
                     'images' => $extracted['images'],
@@ -650,6 +653,10 @@ class TutorialController extends Controller
                     }
                 }
             }
+            foreach ($tutorials as $slug => &$tutorial) {
+                $tutorial['steps'] = TutorialRegistry::getSteps($sectionKey, $slug);
+            }
+            unset($tutorial);
             $book['sections'][$sectionKey] = [
                 'title' => $sectionMeta['title'],
                 'subtitle' => $sectionMeta['subtitle'] ?? '',