Add @extend_schema decorators to fix drf-spectacular serializer warnings

All @api_view function-based views now have explicit schema annotations,
eliminating "unable to guess serializer" warnings on startup and producing
complete OpenAPI documentation.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

apps/accounts/views.py

@@ -1,3 +1,4 @@
+from drf_spectacular.utils import extend_schema
 from rest_framework import status
 from rest_framework.decorators import api_view, permission_classes
 from rest_framework.permissions import IsAuthenticated
@@ -18,6 +19,10 @@ from apps.accounts.serializers import (
 User = get_user_model()
 
 
+@extend_schema(
+    request=UpdateProfileSerializer,
+    responses={200: UserSerializer},
+)
 @api_view(["GET", "PATCH"])
 @permission_classes([IsAuthenticated])
 def me(request):
@@ -31,6 +36,10 @@ def me(request):
     return Response(UserSerializer(request.user).data)
 
 
+@extend_schema(
+    request=ChangePasswordSerializer,
+    responses={200: None},
+)
 @api_view(["POST"])
 @permission_classes([IsAuthenticated])
 def change_password(request):

apps/resources/views.py

@@ -1,5 +1,6 @@
 from django.db.models import Count
 from django.shortcuts import get_object_or_404
+from drf_spectacular.utils import extend_schema
 from rest_framework import status
 from rest_framework.decorators import api_view, permission_classes
 from rest_framework.response import Response
@@ -18,6 +19,7 @@ from apps.resources.services import detect_format_from_filename, process_upload
 from parsers.factory import ParserFactory
 
 
+@extend_schema(request=FileUploadSerializer, responses={201: None})
 @api_view(["POST"])
 @permission_classes([IsManagerOrAbove])
 def upload_resource(request, slug):
@@ -56,6 +58,7 @@ def upload_resource(request, slug):
     return Response(result, status=status.HTTP_201_CREATED)
 
 
+@extend_schema(responses={200: ResourceFileSerializer(many=True)})
 @api_view(["GET"])
 def list_resources(request, slug):
     """List resource files for a project."""
@@ -65,6 +68,7 @@ def list_resources(request, slug):
     return Response(serializer.data)
 
 
+@extend_schema(responses={200: TranslatableStringListSerializer(many=True)})
 @api_view(["GET"])
 def list_strings(request, slug):
     """List translatable strings for a project with optional filters."""
@@ -104,6 +108,7 @@ def list_strings(request, slug):
     return Response(serializer.data)
 
 
+@extend_schema(responses={200: TranslatableStringSerializer})
 @api_view(["GET"])
 def string_detail(request, slug, string_id):
     """Get a translatable string with all its translations."""
@@ -117,6 +122,7 @@ def string_detail(request, slug, string_id):
     return Response(serializer.data)
 
 
+@extend_schema(responses={200: None})
 @api_view(["GET"])
 def export_translations(request, slug, language, file_format):
     """Export translations for a language in the specified format."""

apps/translations/views.py

@@ -11,12 +11,14 @@ from apps.projects.models import Project
 from apps.resources.models import TranslatableString
 from apps.translations.models import Translation
 from apps.translations.serializers import (
+    ProgressSerializer,
     TranslationSerializer,
     TranslationSuggestionSerializer,
 )
 from apps.translations.services import get_suggestions
 
 
+@extend_schema(request=TranslationSerializer, responses={201: TranslationSerializer})
 @api_view(["POST"])
 @permission_classes([IsTranslatorOrAbove])
 def create_translation(request, slug, string_id):
@@ -36,6 +38,7 @@ def create_translation(request, slug, string_id):
     return Response(serializer.data, status=status.HTTP_201_CREATED)
 
 
+@extend_schema(request=TranslationSerializer, responses={200: TranslationSerializer})
 @api_view(["PUT", "PATCH"])
 @permission_classes([IsTranslatorOrAbove])
 def update_translation(request, slug, string_id, language):
@@ -58,6 +61,7 @@ def update_translation(request, slug, string_id, language):
     return Response(serializer.data)
 
 
+@extend_schema(responses={200: ProgressSerializer})
 @api_view(["GET"])
 def translation_progress(request, slug):
     """Get translation progress per language for a project."""