style: run python linter & prettifier on backend code

server/connectors/base.py

@@ -1,10 +1,11 @@
 from abc import ABC, abstractmethod
 from dto.post import Post
 
+
 class BaseConnector(ABC):
     # Each subclass declares these at the class level
-    source_name: str       # machine-readable: "reddit", "youtube"
-    display_name: str      # human-readable: "Reddit", "YouTube"
+    source_name: str  # machine-readable: "reddit", "youtube"
+    display_name: str  # human-readable: "Reddit", "YouTube"
     required_env: list[str] = []  # env vars needed to activate
 
     search_enabled: bool
@@ -14,16 +15,13 @@ class BaseConnector(ABC):
     def is_available(cls) -> bool:
         """Returns True if all required env vars are set."""
         import os
+
         return all(os.getenv(var) for var in cls.required_env)
 
     @abstractmethod
-    def get_new_posts_by_search(self, 
-                                search: str = None, 
-                                category: str = None, 
-                                post_limit: int = 10
-                                ) -> list[Post]:
-        ...
+    def get_new_posts_by_search(
+        self, search: str = None, category: str = None, post_limit: int = 10
+    ) -> list[Post]: ...
 
     @abstractmethod
-    def category_exists(self, category: str) -> bool:
-        ...
+    def category_exists(self, category: str) -> bool: ...