fix: WORKSPSACES section + remaining emoji icons replaced

- base.html: séparateur entre version et Log out, _local_workspaces_for_user
- board.py: _local_workspaces_for_user helper, app_version, fix emoji icons
- dashboard.py: _local_workspaces_for_user helper
- library.html: 📚📁📄🕒⭐👥🌐🔒📦 → SVG + icon map
- workspaces.html: 📁🔍🗑📝 → SVG
- local_workspace.html: page_icon, empty states, icon functions → SVG
- settings.html: 👤🔔 → SVG nav icons
- _icons.html: +'bell' icon
- CSS: .nav-icon-inline, .empty-state-icon
- 143 tests passent

app/templates/base.html

@@ -123,7 +123,7 @@
     {% else %}
       <span class="tree-toggle-placeholder"></span>
     {% endif %}
-    <span class="page-icon">{{ page.icon }}</span>
+    <span class="page-icon">{% if page.icon in ("folder","file","star","link","trash","book") %}{{ fd_icon(page.icon,14) }}{% else %}{{ page.icon }}{% endif %}</span>
     <span class="page-name">{{ page.name }}</span>
     <span class="item-actions">
       <button class="item-action-btn" @click.stop="newSubPage('{{ page.id }}')">+</button>
@@ -191,6 +191,7 @@
       {% endif %}
       <div class="um-sep"></div>
       <div class="um-version">FlowDeck v{{ app_version }}</div>
+      <div class="um-sep"></div>
       <a href="/auth/logout" class="um-item um-danger" @click="workspaceMenuOpen=false">{{ fd_icon("log-out", 16) }} Log out</a>
     </div>
     </div>