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>

backend/app/api/routers/orders.py

@@ -1,4 +1,5 @@
 import io
+import logging
 import os
 import re
 import uuid
@@ -6,6 +7,8 @@ import zipfile
 from datetime import datetime
 from typing import Optional
 
+logger = logging.getLogger(__name__)
+
 from fastapi import APIRouter, Depends, HTTPException, Query, status
 from fastapi.responses import StreamingResponse
 from pydantic import BaseModel
@@ -906,9 +909,17 @@ async def dispatch_renders(
             )
     await db.commit()
 
-    from app.tasks.step_tasks import dispatch_order_line_render
+    from app.domains.rendering.dispatch_service import dispatch_render_with_workflow
     for line in lines:
-        dispatch_order_line_render.delay(str(line.id))
+        try:
+            dispatch_render_with_workflow(str(line.id))
+        except Exception as exc:
+            logger.warning(
+                "dispatch_render_with_workflow failed for %s, falling back: %s",
+                line.id, exc,
+            )
+            from app.tasks.step_tasks import dispatch_order_line_render
+            dispatch_order_line_render.delay(str(line.id))
 
     return {"dispatched": len(lines), "order_status": order.status.value}