fix: make back-link text consistent with aria-labels across file views

Co-authored-by: christianlouis <361235+christianlouis@users.noreply.github.com>
Agent-Logs-Url: https://github.com/christianlouis/DocuElevate/sessions/12276514-bd3d-4e3e-84d9-5977d1f82b19

frontend/templates/file_annotations.html

@@ -558,7 +558,7 @@
   <!-- ── Back + header ── -->
   <div style="display:flex;align-items:center;gap:1rem;margin-bottom:1.5rem;flex-wrap:wrap;">
     <a href="/files/{{ file.id }}" style="display:inline-flex;align-items:center;gap:0.4rem;color:#3b82f6;font-weight:600;text-decoration:none;" aria-label="Back to File Summary">
-      <i class="fas fa-arrow-left" aria-hidden="true"></i> Back to File
+      <i class="fas fa-arrow-left" aria-hidden="true"></i> Back to File Summary
     </a>
   </div>
 

frontend/templates/file_detail.html

@@ -1099,7 +1099,7 @@
   <div style="display:flex;align-items:center;gap:1rem;margin-bottom:1.5rem;flex-wrap:wrap;">
     <a href="/files/{{ file.id }}" class="back-button" style="margin-bottom:0;" aria-label="Back to File Summary">
       <i class="fas fa-arrow-left" aria-hidden="true"></i>
-      Back to File
+      Back to File Summary
     </a>
     {% if file %}
     <a href="/files/{{ file.id }}/detail" class="back-button" style="margin-bottom:0;" aria-label="View document detail for {{ file.original_filename }}">

frontend/templates/file_view.html

@@ -160,7 +160,7 @@
 
   <!-- ── Back + header ── -->
   <a href="/files/{{ file.id }}" style="display:inline-flex;align-items:center;gap:0.4rem;color:#3b82f6;font-weight:600;text-decoration:none;margin-bottom:1.25rem;" aria-label="Back to File Summary">
-    <i class="fas fa-arrow-left" aria-hidden="true"></i> Back to File
+    <i class="fas fa-arrow-left" aria-hidden="true"></i> Back to File Summary
   </a>
 
   <div class="doc-header">