feat!: migrate to OpenAI native tool calls and fix circular deps (#fuck-gemini)

- Fix circular dependencies in agent/tools
- Migrate from custom JSON to OpenAI tool calls format
- Add async streaming (step_stream, complete_stream)
- Simplify prompt system and remove token counting
- Add 5 new API endpoints (/health, /v1/models, /api/memory/*)
- Add 3 new tools (get_torrent_by_index, add_torrent_by_index, set_language)
- Fix all 500 tests and add coverage config (80% threshold)
- Add comprehensive docs (README, pytest guide)

BREAKING: LLM interface changed, memory injection via get_memory()

application/torrents/add_torrent.py

@@ -1,7 +1,13 @@
 """Add torrent use case."""
+
 import logging
 
-from infrastructure.api.qbittorrent import QBittorrentClient, QBittorrentAuthError, QBittorrentAPIError
+from infrastructure.api.qbittorrent import (
+    QBittorrentAPIError,
+    QBittorrentAuthError,
+    QBittorrentClient,
+)
+
 from .dto import AddTorrentResponse
 
 logger = logging.getLogger(__name__)
@@ -10,26 +16,26 @@ logger = logging.getLogger(__name__)
 class AddTorrentUseCase:
     """
     Use case for adding a torrent to qBittorrent.
-    
+
     This orchestrates the qBittorrent API client to add torrents.
     """
-    
+
     def __init__(self, qbittorrent_client: QBittorrentClient):
         """
         Initialize use case.
-        
+
         Args:
             qbittorrent_client: qBittorrent API client
         """
         self.qbittorrent_client = qbittorrent_client
-    
+
     def execute(self, magnet_link: str) -> AddTorrentResponse:
         """
         Add a torrent to qBittorrent using a magnet link.
-        
+
         Args:
             magnet_link: Magnet link of the torrent to add
-        
+
         Returns:
             AddTorrentResponse with success or error information
         """
@@ -37,49 +43,42 @@ class AddTorrentUseCase:
             # Validate magnet link
             if not magnet_link or not isinstance(magnet_link, str):
                 raise ValueError("Magnet link must be a non-empty string")
-            
+
             if not magnet_link.startswith("magnet:"):
                 raise ValueError("Invalid magnet link format")
-            
+
             logger.info("Adding torrent to qBittorrent")
-            
+
             # Add torrent to qBittorrent
             success = self.qbittorrent_client.add_torrent(magnet_link)
-            
+
             if success:
                 logger.info("Torrent added successfully to qBittorrent")
                 return AddTorrentResponse(
-                    status="ok",
-                    message="Torrent added successfully to qBittorrent"
+                    status="ok", message="Torrent added successfully to qBittorrent"
                 )
             else:
                 logger.warning("Failed to add torrent to qBittorrent")
                 return AddTorrentResponse(
                     status="error",
                     error="add_failed",
-                    message="Failed to add torrent to qBittorrent"
+                    message="Failed to add torrent to qBittorrent",
                 )
-        
+
         except QBittorrentAuthError as e:
             logger.error(f"qBittorrent authentication error: {e}")
             return AddTorrentResponse(
                 status="error",
                 error="authentication_failed",
-                message="Failed to authenticate with qBittorrent"
+                message="Failed to authenticate with qBittorrent",
             )
-        
+
         except QBittorrentAPIError as e:
             logger.error(f"qBittorrent API error: {e}")
-            return AddTorrentResponse(
-                status="error",
-                error="api_error",
-                message=str(e)
-            )
-        
+            return AddTorrentResponse(status="error", error="api_error", message=str(e))
+
         except ValueError as e:
             logger.error(f"Validation error: {e}")
             return AddTorrentResponse(
-                status="error",
-                error="validation_failed",
-                message=str(e)
+                status="error", error="validation_failed", message=str(e)
             )