feat(node): add ".." parent row in file explorer, hide mkdir button

Show a ".." row at the top of subdirectory listings to navigate back to
the parent. No path traversal risk — currentPath is internal state built
from the node's own index. Hide the mkdir button (not useful yet); update
the upload-controls test marker accordingly.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

1 files changed, 14 insertions, 5 deletions

diff --git a/packages/meshbay-hub/src/meshbay_hub/static/files-app.js b/packages/meshbay-hub/src/meshbay_hub/static/files-app.js
index d6cb3b9..195c385 100644
--- a/packages/meshbay-hub/src/meshbay_hub/static/files-app.js
+++ b/packages/meshbay-hub/src/meshbay_hub/static/files-app.js
@@ -345,11 +345,6 @@ function FilesPanel({
               onChange=${uploadFile} />
           </label>
           `}
-          ${canCreateDir && html`
-          <button class="tb-btn" onClick=${makeDirectory}>
-            <${Icon} name="folder-plus" /> ${t('group.mkdir')}
-          </button>
-          `}
         </div>
 
         <div class="breadcrumbs">
@@ -406,6 +401,20 @@ function FilesPanel({
           </tr>
         </thead>
         <tbody>
+          ${currentPath && html`
+            <tr class="file-row dir-row" key="__parent__" onClick=${() => {
+              const parts = currentPath.split('/');
+              setCurrentPath(parts.slice(0, -1).join('/'));
+            }}>
+              <td class="sel-cell"></td>
+              <td>${'\u{1F4C1}'}</td>
+              <td>..</td>
+              <td class="file-size"></td>
+              ${showGroup && html`<td></td>`}
+              <td class="td-type"></td>
+              <td class="td-date"></td>
+            </tr>
+          `}
           ${subdirs.map(d => {
             const full = currentPath ? currentPath + '/' + d : d;
             const inside = entriesUnder(entries, full);