添加api调用接口

Co-authored-by: Copilot <copilot@github.com>

app/templates/printer/prepare.html

@@ -41,7 +41,7 @@
             <div id="file-{{ f.id }}" class="list-group-item list-group-item-action d-flex justify-content-between align-items-center py-3 transition-style">
                 <div class="me-auto text-truncate" style="max-width: 80%;">
                     <h6 class="mb-1"><i class="bi bi-file-earmark-code text-primary me-2"></i>{{ f.name }}</h6>
-                    <small class="text-muted d-block">{{ _('Size:') }} {{ f.size }} bytes, {{ _('Time:') }} {{ f.gcodeAnalysis.estimatedPrintTime if f.gcodeAnalysis else 'Unknown' }}s</small>
+                    <small class="text-muted d-block pb-1">{{ _('Size:') }} {{ f.size | filesizeformat }}, {% if f.meta_print_time and f.meta_print_time != '-' %}{{ _('Estimated Time:') }} {{ f.meta_print_time }}{% else %}{{ _('Time:') }} {{ f.gcodeAnalysis.estimatedPrintTime if f.gcodeAnalysis else 'Unknown' }}s{% endif %}</small>
                 </div>
                 <div>
                     <a href="{{ url_for('main.preview_gcode', file_id=f.id) }}" class="btn btn-sm btn-outline-info rounded-pill px-3 shadow-sm me-2"><i class="bi bi-eye me-1"></i>{{ _('Preview') }}</a>