refactor(crawling): improve type hints and code cleanup

- Added proper return type hints for DeepCrawlStrategy.arun method
- Added __call__ method to DeepCrawlStrategy for easier usage
- Removed redundant comments and imports
- Cleaned up type hints in DFS strategy
- Removed empty docker_client.py and .continuerules
- Added .private/ to gitignore

BREAKING CHANGE: DeepCrawlStrategy.arun now returns Union[CrawlResultT, List[CrawlResultT], AsyncGenerator[CrawlResultT, None]]

.continuerules

@@ -1,4 +0,0 @@
-- This project Crawl4ai, I am very sensitive to any change, make sure to follow my instruction closely.
-- Never apply changes I never asked, you are not 100$ free agent to do whatever you want.
-- All changes must be relevant to the requests I asked for.
-- Do not jumpt tp make changes first share your plane and explain to me what you wanna do.

.gitignore

@@ -251,3 +251,4 @@ continue_config.json
 .prompts/
 
 .llm.env
+.private/

crawl4ai/deep_crawling/base_strategy.py

@@ -94,7 +94,7 @@ class DeepCrawlStrategy(ABC):
             crawler_run_config (Optional[CrawlerRunConfig]): Crawler configuration.
         
         Returns:
-            AsyncGenerator[CrawlResult, None]: An async generator yielding crawl results.
+            Union[CrawlResultT, List[CrawlResultT], AsyncGenerator[CrawlResultT, None]]
         """
         if config is None:
             raise ValueError("CrawlerRunConfig must be provided")
@@ -104,6 +104,9 @@ class DeepCrawlStrategy(ABC):
         else:
             return await self._arun_batch(start_url, crawler, config)
 
+    def __call__(self, start_url: str, crawler: AsyncWebCrawler, config: CrawlerRunConfig):
+        return self.arun(start_url, crawler, config)
+
     @abstractmethod
     async def shutdown(self) -> None:
         """

crawl4ai/deep_crawling/bfs_strategy.py

@@ -131,7 +131,6 @@ class BFSDeepCrawlStrategy(DeepCrawlStrategy):
                 depth = depths.get(url, 0)
                 result.metadata = result.metadata or {}
                 result.metadata["depth"] = depth
-                # Retrieve parent_url from current_level.
                 parent_url = next((parent for (u, parent) in current_level if u == url), None)
                 result.metadata["parent_url"] = parent_url
                 results.append(result)
@@ -174,8 +173,6 @@ class BFSDeepCrawlStrategy(DeepCrawlStrategy):
 
             current_level = next_level
 
-
-
     async def shutdown(self) -> None:
         """
         Clean up resources and signal cancellation of the crawl.

crawl4ai/deep_crawling/dfs_strategy.py

@@ -2,13 +2,8 @@
 from typing import AsyncGenerator, Optional, Set, Dict, List, Tuple
 
 from ..models import CrawlResult
-from .bfs_strategy import BFSDeepCrawlStrategy  # Inherit common logic: can_process_url, link_discovery, etc.
-
-from typing import TYPE_CHECKING
-if TYPE_CHECKING:
-    from ..async_configs import CrawlerRunConfig
-    from ..async_webcrawler import AsyncWebCrawler
-
+from .bfs_strategy import BFSDeepCrawlStrategy  # noqa
+from ..types import AsyncWebCrawler, CrawlerRunConfig
 
 class DFSDeepCrawlStrategy(BFSDeepCrawlStrategy):
     """
@@ -20,8 +15,8 @@ class DFSDeepCrawlStrategy(BFSDeepCrawlStrategy):
     async def _arun_batch(
         self,
         start_url: str,
-        crawler: "AsyncWebCrawler",
-        config: "CrawlerRunConfig",
+        crawler: AsyncWebCrawler,
+        config: CrawlerRunConfig,
     ) -> List[CrawlResult]:
         """
         Batch (non-streaming) DFS mode.
@@ -61,8 +56,8 @@ class DFSDeepCrawlStrategy(BFSDeepCrawlStrategy):
     async def _arun_stream(
         self,
         start_url: str,
-        crawler: "AsyncWebCrawler",
-        config: "CrawlerRunConfig",
+        crawler: AsyncWebCrawler,
+        config: CrawlerRunConfig,
     ) -> AsyncGenerator[CrawlResult, None]:
         """
         Streaming DFS mode.

crawl4ai/deep_crawling/scorers.py

@@ -3,11 +3,9 @@ from typing import List, Dict, Optional
 from dataclasses import dataclass
 from urllib.parse import urlparse, unquote
 import re
-import math
 import logging
 from functools import lru_cache
 from array import array
-from functools import lru_cache
 import ctypes
 import platform
 PLATFORM = platform.system()