Add Gemini 2.5

Author: crittermike

index.html

@@ -123,6 +123,7 @@ <h2 class="Box-title">
                     <option value="claude-3.5-sonnet">Claude 3.5 Sonnet</option>
                     <option value="claude-3.7-sonnet">Claude 3.7 Sonnet</option>
                     <option value="claude-3.7-sonnet-thought">Claude 3.7 Sonnet Thinking</option>
+                    <option value="gemini-2.5-pro">Gemini 2.5 Pro</option>
                     <option value="gemini-2.0-flash-001">Gemini 2.0 Flash</option>
                 </select>
             </div>