feat(O): UI-Vollständigkeit + v3-Workflows + OCC-Kantenanalyse

Backend:
- Phase I: notification_configs router (GET/PUT/{event}/{channel}/POST reset)
  war bereits in notifications.py — add-alias endpoint in uploads.py ergänzt
- OutputType schema: workflow_definition_id + workflow_name fields;
  PATCH unterstützt Workflow-Zuweisung; _enrich_workflow_names() batch query
- Dispatch-Integration: orders.py dispatch_renders() → dispatch_render_with_workflow()
  mit Legacy-Fallback; neues Logging
- uploads.py: POST /validations/{id}/add-alias für Material-Lücken

Pipeline:
- step_processor.py: extract_mesh_edge_data() via OCC — berechnet Dihedralwinkel
  aller Kanten, liefert suggested_smooth_angle + sharp_edge_midpoints
  Integriert in extract_cad_metadata() und process_cad_file()
- domains/rendering/tasks.py: apply_asset_library_materials_task (K3),
  export_gltf_for_order_line_task → Blender export_gltf.py (K4),
  export_blend_for_order_line_task → export_blend.py fix (K5)
- render-worker/scripts/still_render.py: _mark_sharp_and_seams() mit
  OCC midpoint KD-tree matching + UV-Seam-Markierung
- render-worker/scripts/blender_render.py: identische Funktion + mesh_attributes parsing

Frontend:
- Layout.tsx: Upload-Link in Sidebar (alle User); Asset Libraries Link (admin/PM)
- App.tsx: /asset-libraries Route
- AssetLibrary.tsx: neue Seite (Upload, Catalog-Anzeige, Refresh, Toggle, Delete)
- OutputTypeTable.tsx: Workflow-Dropdown + Legacy/Workflow Badge
- ProductDetail.tsx: Geometry-Karte (Volumen, Surface, BBox, Sharp-Winkel)
- api/outputTypes.ts + api/products.ts: neue Felder
- api/imports.ts: ImportValidation API

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

frontend/src/pages/ProductDetail.tsx

@@ -4,7 +4,7 @@ import { useQuery, useMutation, useQueryClient } from '@tanstack/react-query'
 import { useDropzone } from 'react-dropzone'
 import {
   ArrowLeft, Pencil, Save, X, Box, Image,
-  RotateCcw, RefreshCw, Upload, ChevronDown, ChevronRight, Wand2, Download, Plus, Trash2, Filter, Cuboid,
+  RotateCcw, RefreshCw, Upload, ChevronDown, ChevronRight, Wand2, Download, Plus, Trash2, Filter, Cuboid, Ruler,
 } from 'lucide-react'
 import { toast } from 'sonner'
 import {
@@ -606,6 +606,49 @@ export default function ProductDetailPage() {
               </div>
             </div>
 
+            {/* Mesh attributes */}
+            {product.cad_file?.mesh_attributes && Object.keys(product.cad_file.mesh_attributes).length > 0 && (() => {
+              const mesh_attrs = product.cad_file!.mesh_attributes!
+              return (
+                <div className="mt-3 p-3 rounded-md border border-border-default bg-surface-alt">
+                  <p className="text-xs font-semibold text-content-muted mb-2 flex items-center gap-1">
+                    <Ruler size={12} />
+                    Geometry
+                  </p>
+                  <div className="grid grid-cols-2 gap-x-4 gap-y-1 text-xs">
+                    {mesh_attrs.volume_mm3 != null && (
+                      <>
+                        <span className="text-content-muted">Volume</span>
+                        <span>{((mesh_attrs.volume_mm3 as number) / 1000).toFixed(2)} cm³</span>
+                      </>
+                    )}
+                    {mesh_attrs.surface_area_mm2 != null && (
+                      <>
+                        <span className="text-content-muted">Surface</span>
+                        <span>{((mesh_attrs.surface_area_mm2 as number) / 100).toFixed(1)} cm²</span>
+                      </>
+                    )}
+                    {mesh_attrs.bbox != null && (
+                      <>
+                        <span className="text-content-muted">BBox</span>
+                        <span>
+                          {(mesh_attrs.bbox as { x?: number; y?: number; z?: number }).x?.toFixed(1)} &times;{' '}
+                          {(mesh_attrs.bbox as { x?: number; y?: number; z?: number }).y?.toFixed(1)} &times;{' '}
+                          {(mesh_attrs.bbox as { x?: number; y?: number; z?: number }).z?.toFixed(1)} mm
+                        </span>
+                      </>
+                    )}
+                    {mesh_attrs.suggested_smooth_angle !== undefined && (
+                      <>
+                        <span className="text-content-muted">Sharp angle</span>
+                        <span>{mesh_attrs.suggested_smooth_angle as number}°</span>
+                      </>
+                    )}
+                  </div>
+                </div>
+              )
+            })()}
+
             {/* Material assignments */}
             {isPrivileged && (
               <div className="pt-3 border-t border-border-light">