🩹(backend) fix swagger and redoc documentation urls

Use canonical documentation routes and add a regression test.

CHANGELOG.md

@@ -25,6 +25,9 @@ and this project adheres to
 - 🚀 (paas) remove buildpack requirements.txt to use the new uv.lock #1349
 - ✨(backend) allow room configuration and access level via external api #1260
 
+### Fixed
+- 🩹(backend) fix swagger and redoc documentation URLs
+
 ## [1.16.0] - 2026-05-13
 
 ### Added

src/backend/core/tests/swagger/test_openapi_schema.py

@@ -4,6 +4,7 @@ Test suite for generated openapi schema.
 
 import json
 from io import StringIO
+from unittest.mock import patch
 
 from django.core.management import call_command
 from django.test import Client
@@ -40,3 +41,19 @@ def test_openapi_client_schema():
         "core/tests/swagger/swagger.json", "r", encoding="utf-8"
     ) as expected_schema:
         assert response.json() == json.load(expected_schema)
+
+
+@patch(
+    "django.contrib.staticfiles.storage.staticfiles_storage.url",
+    side_effect=lambda name: f"/static/{name}",
+)
+# pylint: disable=unused-argument
+def test_openapi_documentation_routes(mock_staticfiles):
+    """Swagger and ReDoc documentation should be served on canonical URLs."""
+    client = Client()
+
+    swagger_response = client.get("/v1.0/swagger/")
+    redoc_response = client.get("/v1.0/redoc/")
+
+    assert swagger_response.status_code == 200
+    assert redoc_response.status_code == 200

src/backend/meet/urls.py

@@ -37,12 +37,12 @@ if settings.USE_SWAGGER or settings.DEBUG:
             name="client-api-schema",
         ),
         path(
-            f"{settings.API_VERSION}//swagger/",
+            f"{settings.API_VERSION}/swagger/",
             SpectacularSwaggerView.as_view(url_name="client-api-schema"),
             name="swagger-ui-schema",
         ),
         re_path(
-            f"{settings.API_VERSION}//redoc/",
+            f"{settings.API_VERSION}/redoc/",
             SpectacularRedocView.as_view(url_name="client-api-schema"),
             name="redoc-schema",
         ),