chore: use from __future__ import annotations (#30254)

Co-authored-by: Dev <dev@Devs-MacBook-Pro-4.local>
Co-authored-by: autofix-ci[bot] <114827586+autofix-ci[bot]@users.noreply.github.com>
Co-authored-by: Asuka Minato <i@asukaminato.eu.org>
Co-authored-by: crazywoola <100913391+crazywoola@users.noreply.github.com>

api/libs/broadcast_channel/channel.py

@@ -2,6 +2,8 @@
 Broadcast channel for Pub/Sub messaging.
 """
 
+from __future__ import annotations
+
 import types
 from abc import abstractmethod
 from collections.abc import Iterator
@@ -129,6 +131,6 @@ class BroadcastChannel(Protocol):
     """
 
     @abstractmethod
-    def topic(self, topic: str) -> "Topic":
+    def topic(self, topic: str) -> Topic:
         """topic returns a `Topic` instance for the given topic name."""
         ...

api/libs/broadcast_channel/redis/channel.py

@@ -1,3 +1,5 @@
+from __future__ import annotations
+
 from libs.broadcast_channel.channel import Producer, Subscriber, Subscription
 from redis import Redis
 
@@ -20,7 +22,7 @@ class BroadcastChannel:
     ):
         self._client = redis_client
 
-    def topic(self, topic: str) -> "Topic":
+    def topic(self, topic: str) -> Topic:
         return Topic(self._client, topic)
 
 

api/libs/broadcast_channel/redis/sharded_channel.py

@@ -1,3 +1,5 @@
+from __future__ import annotations
+
 from libs.broadcast_channel.channel import Producer, Subscriber, Subscription
 from redis import Redis
 
@@ -18,7 +20,7 @@ class ShardedRedisBroadcastChannel:
     ):
         self._client = redis_client
 
-    def topic(self, topic: str) -> "ShardedTopic":
+    def topic(self, topic: str) -> ShardedTopic:
         return ShardedTopic(self._client, topic)
 
 

api/libs/email_i18n.py

@@ -6,6 +6,8 @@ in Dify. It follows Domain-Driven Design principles with proper type hints and
 eliminates the need for repetitive language switching logic.
 """
 
+from __future__ import annotations
+
 from dataclasses import dataclass
 from enum import StrEnum, auto
 from typing import Any, Protocol
@@ -53,7 +55,7 @@ class EmailLanguage(StrEnum):
     ZH_HANS = "zh-Hans"
 
     @classmethod
-    def from_language_code(cls, language_code: str) -> "EmailLanguage":
+    def from_language_code(cls, language_code: str) -> EmailLanguage:
         """Convert a language code to EmailLanguage with fallback to English."""
         if language_code == "zh-Hans":
             return cls.ZH_HANS