Update README with integrated Flickr search feature

Document the new workflow where users can browse Flickr search results
directly in the interface instead of visiting Flickr's search page.

Closes: #5

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

README.md

@@ -19,7 +19,14 @@ primary purpose is to simplify the process of discovering and contacting
 photographers on Flickr whose photos can be used to enhance Wikipedia articles.
 
 ### Key Features
-- Search for Flickr photos related to specific Wikipedia articles.
+- **Integrated Flickr search**: Enter a Wikipedia article title and see Flickr
+  photos directly in the interface - no need to visit Flickr's search page.
+- **Photo grid with metadata**: Search results display as a grid of thumbnails
+  showing the photographer's name and license for each photo.
+- **License highlighting**: Photos with Wikipedia-compatible licenses (CC BY,
+  CC BY-SA, CC0, Public Domain) are highlighted with a green badge.
+- **One-click message composition**: Click any photo to compose a permission
+  request message with the photo displayed alongside.
 - Generate messages to request permission to use photos on Wikipedia.
 - Handle exceptions gracefully and provide detailed error information.
 
@@ -29,10 +36,11 @@ To use the tool, follow these steps:
 
 1. Start the tool by running the script.
 2. Access the tool through a web browser.
-3. Enter the Wikipedia URL for the article you want to find photos for.
-4. Optionally, provide a Flickr URL if you already have one in mind.
-5. The tool will extract relevant information and generate a message for you to
-   request permission to use the photo on Wikipedia.
+3. Enter the Wikipedia article title or URL.
+4. Browse the Flickr search results displayed in the interface.
+5. Click on a photo to select it and compose a permission request message.
+6. Copy the subject and message, then click "Send message on Flickr" to contact
+   the photographer.
 
 ## Error Handling