fix: align PocketBase type definitions with actual schema

Remove slug field from PageContentRecord (intro/bio collections have none).
Remove number field from SectionRecord (not stored in PocketBase); derive
zero-padded display number from the order field at render time.

src/widgets/SectionsAccordion/ui/SectionsAccordion/SectionsAccordion.test.tsx

@@ -5,9 +5,9 @@ import { SectionsAccordion } from './SectionsAccordion';
 const baseRecord = { collectionId: 'c1', collectionName: 'sections', created: '', updated: '' };
 
 const sections: SectionRecord[] = [
-  { ...baseRecord, id: '1', slug: 'intro', title: 'Intro', number: '01', order: 1 },
-  { ...baseRecord, id: '2', slug: 'bio', title: 'Bio', number: '02', order: 2 },
-  { ...baseRecord, id: '3', slug: 'skills', title: 'Skills', number: '03', order: 3 },
+  { ...baseRecord, id: '1', slug: 'intro', title: 'Intro', order: 1 },
+  { ...baseRecord, id: '2', slug: 'bio', title: 'Bio', order: 2 },
+  { ...baseRecord, id: '3', slug: 'skills', title: 'Skills', order: 3 },
 ];
 
 describe('SectionsAccordion', () => {

src/widgets/SectionsAccordion/ui/SectionsAccordion/SectionsAccordion.tsx

@@ -33,7 +33,7 @@ export function SectionsAccordion({ sections, activeSlug, children }: Props) {
         <SectionAccordion
           key={section.slug}
           id={section.slug}
-          number={section.number}
+          number={String(section.order).padStart(2, '0')}
           title={section.title}
           isActive={activeSlug === section.slug}
           href={`/${section.slug}`}