fix: derniers émojis — workspaces 🏠, hover actions, sidebar context menu

- workspaces.html: 🏠→home SVG (page_icon, header)
- local_workspace.html: ✏️🗑 ✕→SVG (rename, delete, clear buttons, rename modal)
- base.html: ✏️🗑️📁📄→SVG (context menus Rename/Delete/New File/Folder)
  + pageIcon default '📁'→'folder', modal title '📁 New Folder'→SVG
- 143 tests passent

app/templates/base.html

@@ -494,7 +494,7 @@
         <span class="menu-shortcut">▶</span>
       </div>
       <div class="context-menu-item" @click="contextAction('rename')">
-        <span class="menu-icon">✏️</span> Rename
+        <span class="menu-icon">{{ fd_icon("edit",14) }}</span> Rename
         <span class="menu-shortcut">Ctrl+Shift+R</span>
       </div>
       <div class="context-menu-item" @click="contextAction('moveTo')">
@@ -502,7 +502,7 @@
         <span class="menu-shortcut">Ctrl+Shift+P</span>
       </div>
       <div class="context-menu-item" @click="contextAction('delete')">
-        <span class="menu-icon">🗑️</span> Move to Trash
+        <span class="menu-icon">{{ fd_icon("trash",14) }}</span> Move to Trash
       </div>
     </div>
     <div class="context-menu-section">
@@ -536,19 +536,19 @@
     <template x-if="wsCtx.isFolder">
       <div class="context-menu-section">
         <div class="context-menu-item" onclick="window.FlowDeck.createPage()">
-          <span class="menu-icon">📄</span> New File
+          <span class="menu-icon">{{ fd_icon("file",14) }}</span> New File
         </div>
         <div class="context-menu-item" onclick="window.FlowDeck.showCreateFolderModal()">
-          <span class="menu-icon">📁</span> New Folder
+          <span class="menu-icon">{{ fd_icon("folder",14) }}</span> New Folder
         </div>
       </div>
     </template>
     <div class="context-menu-section">
       <div class="context-menu-item" @click="wsCtxAction('rename')">
-        <span class="menu-icon">✏️</span> Rename
+        <span class="menu-icon">{{ fd_icon("edit",14) }}</span> Rename
       </div>
       <div class="context-menu-item" @click="wsCtxAction('delete')">
-        <span class="menu-icon">🗑</span> Delete
+        <span class="menu-icon">{{ fd_icon("trash",14) }}</span> Delete
       </div>
     </div>
     <div class="context-menu-section">
@@ -817,7 +817,7 @@
       workspaceName: '{{ workspace_name }}',
       workspaceInitial: '{{ workspace_initial }}',
       currentPage: '{{ current_page }}',
-      pageIcon: '{% block page_icon %}📁{% endblock %}',
+      pageIcon: '{% block page_icon %}folder{% endblock %}',
       pageTitle: '{% block page_title %}FlowDeck{% endblock %}',
       lastEdited: '{{ last_edited }}',
       workspaceKey: '{{ workspace_key }}',
@@ -1561,7 +1561,7 @@
 <div id="fd-global-folder-modal" class="flowdeck-modal-overlay" style="display:none" onclick="if(event.target===this)this.style.display='none'">
   <div class="flowdeck-modal">
     <div class="flowdeck-modal-header">
-      <h3>📁 New Folder</h3>
+      <h3>{{ fd_icon("folder",16) }} New Folder</h3>
       <button class="flowdeck-modal-close" onclick="document.getElementById('fd-global-folder-modal').style.display='none'">&times;</button>
     </div>
     <div class="flowdeck-modal-body">