perf: remove unused imports (AbortSignalDetector, functools, List/Dict/Set)

Author: maebahesioru

src/api/request_processor.py

@@ -15,7 +15,7 @@
 from models import ChatCompletionRequest, ClientDisconnectedError
 from browser import switch_ai_studio_model, save_error_snapshot
 from .utils import validate_chat_request, prepare_combined_prompt, generate_sse_chunk, generate_sse_stop_chunk, use_stream_response, calculate_usage_stats, request_manager, calculate_stream_max_retries
-from .abort_detector import AbortSignalDetector, AbortSignalHandler
+from .abort_detector import AbortSignalHandler
 from browser.page_controller import PageController
 
 TOOL_CALL_INSTRUCTION = """When you need to call a tool, you MUST use EXACTLY this format (one per tool call):

src/browser/operations.py

@@ -4,8 +4,7 @@
 import os
 import re
 import logging
-import functools
-from typing import Optional, Any, List, Dict, Callable, Set, TypeVar
+from typing import Optional, Any, Callable, TypeVar
 from playwright.async_api import Page as AsyncPage, Locator, Error as PlaywrightAsyncError
 from config import *
 from models import ClientDisconnectedError, ElementClickError