Revert "chore: plan shared session presence UI changes"

This reverts commit 78f43ac.

Author: Copilot

desktop-app/resources/index.html

@@ -276,11 +276,6 @@ <h5>Menu</h5>
             <p id="github-import-title" class="reset-modal-message">Import Markdown from GitHub</p>
             <input type="url" id="github-import-url" class="rename-modal-input" placeholder="https://github.com/owner/repo/blob/main/README.md" />
             <select id="github-import-file-select" class="rename-modal-input" style="display:none;"></select>
-            <div id="github-import-selection-toolbar" class="github-import-selection-toolbar" style="display:none;">
-              <span id="github-import-selected-count" class="github-import-selected-count">0 selected</span>
-              <button type="button" class="reset-modal-btn" id="github-import-select-all">Select All</button>
-            </div>
-            <div id="github-import-tree" class="github-import-tree" style="display:none;"></div>
             <p id="github-import-error" class="github-import-error" style="display:none;"></p>
             <div class="reset-modal-actions">
               <button class="reset-modal-btn reset-modal-cancel" id="github-import-cancel">Cancel</button>