docs: add screenshots and preview section to README

README.md

@@ -8,6 +8,31 @@ Developed and designed with custom branding and a native graphical interface.
 
 ---
 
+## Screenshots & Preview
+
+### 1. Seamless Context Menu Integration
+Select your bibliography references, right-click, and select **Copy Attachments to Folder...** to begin the export:
+
+<p align="center">
+  <img src="assets/context_menu.png" alt="Right-click Context Menu" width="80%">
+</p>
+
+### 2. Live Status & Copy Completion
+A native popup notification tracks the copy operation and confirms when the files have been copied successfully:
+
+<p align="center">
+  <img src="assets/copy_completed.png" alt="Copy Completed Toast" width="60%">
+</p>
+
+### 3. Clean Zotero Add-ons Listing
+The extension is fully integrated with Zotero's Add-ons manager, showing the custom icon, updated author info, homepage, and version metadata:
+
+<p align="center">
+  <img src="assets/addon_manager.png" alt="Add-ons Manager Listing" width="90%">
+</p>
+
+---
+
 ## Detailed Description
 
 **Zotero PDF Copier & Renamer** is a professional-grade productivity extension built from the ground up for researchers, students, academics, and knowledge managers who utilize Zotero 7, 8, or 9 as their primary reference management system. While Zotero is incredibly powerful for cataloging reference metadata, fetching citation records, and organizing library items, extracting the actual PDF attachments for external use has always been a painful, friction-heavy process.