feat(signature): add font and color customization for typed signatures

feat(stamps): implement new add stamps tool with image stamp support

fix(form-filler): improve form filler UI and XFA form support

refactor(sign-pdf): improve signature tool initialization and error handling

style(ui): update text color for better visibility in dark mode

chore: update navigation links to use root-relative paths

src/pages/bookmark.html

@@ -17,16 +17,16 @@
         <div class="flex-shrink-0 flex items-center cursor-pointer" id="home-logo">
           <img src="../../public/images/favicon.svg" alt="Bento PDF Logo" class="h-8 w-8" />
           <span class="text-white font-bold text-xl ml-2">
-            <a href="index.html">BentoPDF</a>
+            <a href="/">BentoPDF</a>
           </span>
         </div>
 
         <!-- Desktop Navigation -->
         <div class="hidden md:flex items-center space-x-8 text-white">
-          <a href="index.html" class="nav-link">Home</a>
+          <a href="/" class="nav-link">Home</a>
           <a href="./about.html" class="nav-link">About</a>
           <a href="./contact.html" class="nav-link">Contact</a>
-          <a href="index.html#tools-header" class="nav-link">All Tools</a>
+          <a href="/" class="nav-link">All Tools</a>
         </div>
 
         <!-- Mobile Hamburger Button -->
@@ -53,10 +53,10 @@
     <!-- Mobile Menu Dropdown -->
     <div id="mobile-menu" class="hidden md:hidden bg-gray-800 border-t border-gray-700">
       <div class="px-2 pt-2 pb-3 space-y-1 text-center">
-        <a href="index.html" class="mobile-nav-link">Home</a>
+        <a href="/" class="mobile-nav-link">Home</a>
         <a href="./about.html" class="mobile-nav-link">About</a>
         <a href="./contact.html" class="mobile-nav-link">Contact</a>
-        <a href="index.html#tools-header" class="mobile-nav-link">All Tools</a>
+        <a href="/" class="mobile-nav-link">All Tools</a>
       </div>
     </div>
   </nav>