Add audiowidget endpoint: Blueprint renders audiowidget.tmpl, PaneCP fetches it on synthesis completion

__init__.py

@@ -1,4 +1,5 @@
 from flask import Blueprint, render_template, request
+from jinja2 import TemplateNotFound
 
 blueprint = Blueprint(
     'vue3_neusik',
@@ -14,3 +15,14 @@ def index():
         'vue3_neusik/index.html',
         import_on_load='true' if request.args.get('import') == '1' else 'false',
     )
+
+@blueprint.route('/audiowidget', methods=['GET'])
+def audiowidget():
+    try:
+        return render_template(
+            'vue3_neusik/audiowidget.tmpl',
+            result_url=request.args.get('result_url', ''),
+            errors=request.args.get('errors', ''),
+        )
+    except TemplateNotFound:
+        return '', 204