docs: Update remaining application name references from 'ebook reader' to 'Bookmann'

- Updated COMPLETE_DOCUMENTATION.md feature descriptions
- Updated user journey reference from 'ebook library' to 'ebook collection'
- Updated all frontend page titles and headers
- Updated Bruno API collection and workspace names
- All references now consistently use 'Bookmann' as the application name

frontend/src/routes/+layout.svelte

@@ -39,7 +39,7 @@
 	<div class="min-h-screen flex items-center justify-center bg-gradient-to-br from-tokyo-bg to-tokyo-bg-dark">
 		<div class="text-center animate-slide-in">
 			<div class="mb-8">
-				<h1 class="text-4xl font-bold text-tokyo-fg mb-2">📚 Ebook Reader</h1>
+				<h1 class="text-4xl font-bold text-tokyo-fg mb-2">📚 Bookmann</h1>
 				<p class="text-tokyo-fg-dark text-lg">Your personal digital library</p>
 			</div>
 			<div class="space-x-6">
@@ -67,7 +67,7 @@
 		<div class="max-w-7xl mx-auto px-4 sm:px-6 lg:px-8">
 			<div class="flex justify-between items-center py-4">
 				<div class="flex items-center space-x-4">
-					<h1 class="text-2xl font-bold text-tokyo-fg">📚 Ebook Reader</h1>
+					<h1 class="text-2xl font-bold text-tokyo-fg">📚 Bookmann</h1>
 					<span class="hidden sm:inline text-sm text-tokyo-fg-dark">•</span>
 					<span class="hidden sm:inline text-sm text-tokyo-fg-dark">Welcome back, {auth.user?.username}</span>
 				</div>

frontend/src/routes/+page.svelte

@@ -19,7 +19,7 @@
 
 <main class="container mx-auto px-4 py-8">
   <div class="mb-12 text-center">
-    <h1 class="text-4xl font-bold text-tokyo-fg mb-2 animate-fade-in">📚 Your Ebook Library</h1>
+    <h1 class="text-4xl font-bold text-tokyo-fg mb-2 animate-fade-in">📚 Your Bookmann Library</h1>
     <p class="text-tokyo-fg-dark text-lg">Discover and organize your digital reading collection</p>
   </div>
 

frontend/src/routes/login/+page.svelte

@@ -27,7 +27,7 @@
 </script>
 
 <svelte:head>
-  <title>Login - Ebook Reader</title>
+  <title>Login - Bookmann</title>
 </svelte:head>
 
 <div class="min-h-screen flex items-center justify-center bg-gradient-to-br from-tokyo-bg to-tokyo-bg-dark py-12 px-4 sm:px-6 lg:px-8">

frontend/src/routes/register/+page.svelte

@@ -6,7 +6,7 @@
 </script>
 
 <svelte:head>
-  <title>Register - Ebook Reader</title>
+  <title>Register - Bookmann</title>
 </svelte:head>
 
 <div class="min-h-screen flex items-center justify-center bg-gradient-to-br from-tokyo-bg to-tokyo-bg-dark py-12 px-4 sm:px-6 lg:px-8">