Correct grammar, wording, branding, and metadata inconsistencies

Standardize product and file-format names, remove duplicate SEO
keywords, align related-tool descriptions with their headings, and
restore incomplete phrases in search and social metadata.

src/js/config/tools.ts

@@ -15,7 +15,7 @@ const baseCategories = [
         name: 'PDF Multi Tool',
         icon: 'ph-pencil-ruler',
         subtitle:
-          'Merge, Split, Organize, Delete, Rotate, Add Blank Pages, Extract and Duplicate in an unified interface.',
+          'Merge, Split, Organize, Delete, Rotate, Add Blank Pages, Extract and Duplicate in a unified interface.',
       },
       {
         href: import.meta.env.BASE_URL + 'merge-pdf.html',
@@ -40,7 +40,7 @@ const baseCategories = [
         name: 'PDF Editor',
         icon: 'ph-pencil-simple',
         subtitle:
-          'Annotate, highlight, redact, comment, add shapes/images, search, and view PDFs',
+          'Annotate, highlight, redact, comment, add shapes/images, search, and view PDFs.',
       },
       {
         href: import.meta.env.BASE_URL + 'jpg-to-pdf.html',
@@ -537,7 +537,7 @@ const baseCategories = [
         name: 'Alternate & Mix Pages',
         icon: 'ph-shuffle',
         subtitle:
-          'Merge PDFs by alternating pages from each PDF. Preserves Bookmarks',
+          'Merge PDFs by alternating pages from each PDF. Preserves Bookmarks.',
       },
       {
         href: import.meta.env.BASE_URL + 'organize-pdf.html',

src/js/logic/digital-sign-pdf.ts

@@ -120,7 +120,7 @@ const CORS_PROXY_URL = import.meta.env.VITE_CORS_PROXY_URL || '';
  *
  * This client-side HMAC provides limited protection (deters casual abuse)
  * but should NOT be considered secure against determined attackers. BentoPDF
- * accepts this tradeoff because of it's client side architecture.
+ * accepts this tradeoff because of its client-side architecture.
  *
  * To enable (optional):
  * 1. Generate a secret: openssl rand -hex 32

src/js/logic/scan-to-pdf.ts

@@ -1,5 +1,5 @@
 // This is essentially the same as image-to-pdf.
-// Note: This is a legacy stub - scan-to-pdf functionality is now handled by image-to-pdf page
+// Note: This is a legacy stub - scan-to-pdf functionality is now handled by the image-to-pdf page
 export const scanToPdf = () => {
     console.warn('scan-to-pdf is deprecated, redirecting to image-to-pdf page');
 };

src/js/logic/word-to-pdf.ts

@@ -1,4 +1,4 @@
-// NOTE: This is a work in progress and does not work correctly as of yet
+// NOTE: This is a work in progress and does not work correctly yet
 import DOMPurify from 'dompurify';
 import { showLoader, hideLoader, showAlert } from '../ui.js';
 import { readFileAsArrayBuffer } from '../utils/helpers.js';