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/library.html

@@ -1,10 +1,10 @@
 {% extends "base.html" %}
-{% block page_icon %}📚{% endblock %}
+{% block page_icon %}{{ fd_icon("book",18) }}{% endblock %}
 {% block page_title %}Library{% endblock %}
 {% block title_prefix %}Library{% endblock %}
 
 {% block topbar %}
-{% set page_icon = "📚" %}
+{% set page_icon = "book" %}
 {% set page_title = "Library" %}
 {% include '_header.html' %}
 {% endblock %}
@@ -305,7 +305,7 @@
   <div class="lib-loading" id="lib-loading" x-show="loading">
     <p x-show="!noWorkspace">Loading…</p>
     <div x-show="noWorkspace" style="padding:40px;text-align:center;">
-      <div style="font-size:48px;margin-bottom:16px;">📁</div>
+      <div style="margin-bottom:16px;">{{ fd_icon("folder",32) }}</div>
       <h3 style="font-size:18px;margin:0 0 8px;">No workspace open</h3>
       <p style="color:var(--text-dim);font-size:14px;margin:0 0 20px;">Open a workspace to browse and manage your library items.</p>
       <a href="/workspaces" class="btn btn-primary" style="display:inline-block;text-decoration:none;padding:8px 20px;">Go to Workspaces</a>
@@ -449,7 +449,7 @@
         <div x-show="peekLoading" class="peek-loading">Loading…</div>
         <div x-show="!peekLoading && peekContent" x-html="peekContent"></div>
         <div x-show="!peekLoading && !peekContent" class="peek-empty">
-          <div style="font-size:48px;margin-bottom:8px;">📄</div>
+          <div style="margin-bottom:8px;">{{ fd_icon("file",32) }}</div>
           <div style="font-size:14px;color:var(--text-secondary);">No preview available</div>
         </div>
       </div>
@@ -782,13 +782,13 @@ function libraryPage() {
     },
 
     // ── Empty states ──
-    emptyIcon: '📄',
+    emptyIcon: 'file',
     emptyTitle: 'No items',
     emptyText: '',
 
     _recomputeEmpty() {
-      var icons = {recents:'🕒',favorites:'⭐',shared:'👥',published:'🌐',private:'🔒',workspace:'📁',repository:'📦'};
-      this.emptyIcon = icons[this.tab] || '📄';
+      var icons = {recents:'clock',favorites:'star',shared:'users',published:'globe',private:'lock',workspace:'folder',repository:'folder'};
+      this.emptyIcon = icons[this.tab] || 'file';
       var titles = {recents:'No recent pages',favorites:'No favorites',shared:'No shared pages',
                     published:'No published pages',private:'No private pages',workspace:'No workspace pages',
                     repository:'Empty repository'};