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/workspaces.html

@@ -56,7 +56,7 @@
 
   <!-- ── Local Workspaces ── -->
   <div class="ws-section">
-    <div class="ws-section-title">📁 My Workspaces <span class="badge" x-text="workspaces.length"></span></div>
+    <div class="ws-section-title">{{ fd_icon("folder",16) }} My Workspaces <span class="badge" x-text="workspaces.length"></span></div>
     <div class="ws-grid">
       <template x-for="ws in workspaces" :key="'local-'+ws.id">
         <div class="ws-card" :class="{active:ws.id===activeId}" @click="selectLocal(ws)">
@@ -64,7 +64,7 @@
           <div class="ws-card-count" x-text="ws.page_count+' page(s)'"></div>
           <div class="ws-card-actions" @click.stop>
             <button class="btn-sm" @click="renameWs(ws)">✏️</button>
-            <button class="btn-sm" style="color:var(--danger);border-color:rgba(255,80,80,.3)" @click="deleteWs(ws)">🗑</button>
+            <button class="btn-sm" style="color:var(--danger);border-color:rgba(255,80,80,.3)" @click="deleteWs(ws)">{{ fd_icon("trash",14) }}</button>
           </div>
         </div>
       </template>
@@ -83,7 +83,7 @@
       <div>Connect your Gitea account to see your projects.</div>
       <a class="gitea-connect" href="/auth/login?provider=gitea&mode=link">🔗 Connect Gitea</a>
       <span style="margin:0 8px;color:var(--text-dim);">or</span>
-      <a class="gitea-connect" href="/auth/login?provider=gitea">📝 Register with Gitea</a>
+      <a class="gitea-connect" href="/auth/login?provider=gitea">{{ fd_icon("edit",14) }} Register with Gitea</a>
     </div>
 
     <!-- Loading skeletons -->