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/settings.html

@@ -81,8 +81,8 @@
     <!-- Left navigation -->
     <div class="settings-nav">
       <div class="settings-nav-header">Account</div>
-      <div class="settings-nav-item" :class="{ active: activeSection==='account' }" @click="activeSection='account'">👤 My account</div>
-      <div class="settings-nav-item" :class="{ active: activeSection==='notifications' }" @click="activeSection='notifications'">🔔 Notifications</div>
+      <div class="settings-nav-item" :class="{ active: activeSection==='account' }" @click="activeSection='account'"><span class="nav-icon-inline">{{ fd_icon("user",14) }}</span> My account</div>
+      <div class="settings-nav-item" :class="{ active: activeSection==='notifications' }" @click="activeSection='notifications'"><span class="nav-icon-inline">{{ fd_icon("bell",14) }}</span> Notifications</div>
       <div class="settings-nav-header">Workspace</div>
       <div class="settings-nav-item" :class="{ active: activeSection==='workspace' }" @click="activeSection='workspace'">📋 General</div>
       <div class="settings-nav-item" :class="{ active: activeSection==='tags' }" @click="activeSection='tags'">🏷️ Tags</div>