fix: Gitea sidebar now has separate Repository section below Private

Backend:
- _sidebar_data() no longer clears workspace_pages for Gitea workspaces
  The local tree stays intact in the 'Private' section
- workspace_pages is always loaded from DB (local files)

Sidebar template (base.html):
- Workspace section renamed to 'Private' when gitea_workspace is true
- New 'Repository (Gitea)' section added below, visible only for Gitea
  workspaces, with its own toggle (sectionsOpen.gitea) and refresh button
- Uses #sidebar-gitea-items container for the remote file tree

Gitea workspace:
- loadSidebarTree() now targets #sidebar-gitea-items
- window._gwData exposed for sidebar refresh button
- sectionsOpen now includes gitea: true by default

app/templates/base.html

@@ -116,12 +116,12 @@
     </div>
 
     <div class="sidebar-scroll">
-    <!-- Workspace -->
+    <!-- Workspace / Private -->
     <div class="sidebar-section">
       <div class="sidebar-section-header" @click="toggleSection('workspace')">
         <div class="sidebar-section-title">
           <span class="chevron" :class="{ open: sectionsOpen.workspace }" x-text="sectionsOpen.workspace ? '▼' : '▶'"></span>
-          <span>{% if workspace_key and '/' in workspace_key %}🔗{% else %}📁{% endif %} {{ active_ws_name or 'Workspace' }}</span>
+          <span>{% if gitea_workspace %}📁 Private{% elif workspace_key and '/' in workspace_key %}🔗{% else %}📁{% endif %} {{ active_ws_name if not gitea_workspace else '' }}</span>
         </div>
         <div class="sidebar-section-actions">
           <button class="section-action-btn" title="New Page" @click.stop="newPageInWorkspace()">📄</button>
@@ -143,6 +143,26 @@
       </div>
     </div>
 
+    <!-- Repository (Gitea) — only visible for Gitea workspaces -->
+    {% if gitea_workspace %}
+    <div class="sidebar-section">
+      <div class="sidebar-section-header" @click="toggleSection('gitea')">
+        <div class="sidebar-section-title">
+          <span class="chevron" :class="{ open: sectionsOpen.gitea }" x-text="sectionsOpen.gitea ? '▼' : '▶'"></span>
+          <span>🔗 Repository (Gitea)</span>
+        </div>
+        <div class="sidebar-section-actions">
+          <button class="section-action-btn" title="Refresh" @click.stop="if(window._gwData)window._gwData.refreshTree()">🔄</button>
+        </div>
+      </div>
+      <div class="sidebar-section-items" x-show="sectionsOpen.gitea" x-transition>
+        <ul class="sidebar-items" data-section="gitea" id="sidebar-gitea-items">
+          <li class="sidebar-item empty-hint"><span class="page-icon">🔗</span><span class="page-name text-dim">Loading...</span></li>
+        </ul>
+      </div>
+    </div>
+    {% endif %}
+
     <!-- Meetings -->
     <div class="sidebar-section">
       <div class="sidebar-section-header" @click="toggleSection('meetings')">
@@ -585,7 +605,7 @@
 
       // ── Sections collapsible ──
       sectionsOpen: (function() {
-        var def = { recents: true, private: true, meetings: true, favorites: true, agents: true, shared: true, published: true, apps: true, workspace: true };
+        var def = { recents: true, private: true, meetings: true, favorites: true, agents: true, shared: true, published: true, apps: true, workspace: true, gitea: true };
         try {
           var saved = JSON.parse(localStorage.getItem('fd_sections') || '{}');
           return Object.assign(def, saved);