chore: perform widespread code cleanup and formatting

Perform a comprehensive code cleanup across multiple modules to improve code quality, consistency, and maintainability.

Key changes include:
- Removing numerous unused imports.
- Standardizing import order.
- Eliminating trailing whitespace and inconsistent newlines.
- Updating legacy type hints to modern syntax (e.g., `List` -> `list`).
- Making minor improvements for code robustness and style.

src/chat/utils/attention_optimizer.py

@@ -47,10 +47,10 @@ class BlockShuffler:
 
             # 复制上下文以避免修改原始字典
             shuffled_context = context_data.copy()
-            
+
             # 示例：假设模板中的占位符格式为 {block_name}
             # 我们需要解析模板，找到可重排的组，并重新构建模板字符串。
-            
+
             # 注意：这是一个复杂的逻辑，通常需要一个简单的模板引擎或正则表达式来完成。
             # 为保持此函数职责单一，这里仅演示核心的重排逻辑，
             # 完整的模板重建逻辑应在调用此函数的地方处理。
@@ -58,14 +58,14 @@ class BlockShuffler:
             for group in BlockShuffler.SWAPPABLE_BLOCK_GROUPS:
                 # 过滤出在当前上下文中实际存在的、非空的block
                 existing_blocks = [
-                    block for block in group if block in context_data and context_data[block]
+                    block for block in group if context_data.get(block)
                 ]
 
                 if len(existing_blocks) > 1:
                     # 随机打乱顺序
                     random.shuffle(existing_blocks)
                     logger.debug(f"重排block组: {group} -> {existing_blocks}")
-                    
+
                     # 这里的实现需要调用者根据 `existing_blocks` 的新顺序
                     # 去动态地重新组织 `prompt_template` 字符串。
                     # 例如，找到模板中与 `group` 相关的占位符部分，然后按新顺序替换它们。

src/chat/utils/prompt_component_manager.py

@@ -2,7 +2,6 @@ import asyncio
 import copy
 import re
 from collections.abc import Awaitable, Callable
-from typing import List
 
 from src.chat.utils.prompt_params import PromptParameters
 from src.common.logger import get_logger
@@ -119,7 +118,7 @@ class PromptComponentManager:
     async def add_injection_rule(
         self,
         prompt_name: str,
-        rules: List[InjectionRule],
+        rules: list[InjectionRule],
         content_provider: Callable[..., Awaitable[str]],
         source: str = "runtime",
     ) -> bool:
@@ -521,7 +520,7 @@ class PromptComponentManager:
             else:
                 for name, (rule, _, _) in rules_for_target.items():
                     target_copy[name] = rule
-            
+
             if target_copy:
                 rules_copy[target] = target_copy
 

src/chat/utils/prompt_params.py

@@ -63,7 +63,7 @@ class PromptParameters:
     action_descriptions: str = ""
     notice_block: str = ""
     group_chat_reminder_block: str = ""
- 
+
     # 可用动作信息
     available_actions: dict[str, Any] | None = None
 

src/chat/utils/report_generator.py

@@ -228,9 +228,9 @@ class HTMLReportGenerator:
 
         # 渲染模板
         # 读取CSS和JS文件内容
-        async with aiofiles.open(os.path.join(self.jinja_env.loader.searchpath[0], "report.css"), "r", encoding="utf-8") as f:
+        async with aiofiles.open(os.path.join(self.jinja_env.loader.searchpath[0], "report.css"), encoding="utf-8") as f:
             report_css = await f.read()
-        async with aiofiles.open(os.path.join(self.jinja_env.loader.searchpath[0], "report.js"), "r", encoding="utf-8") as f:
+        async with aiofiles.open(os.path.join(self.jinja_env.loader.searchpath[0], "report.js"), encoding="utf-8") as f:
             report_js = await f.read()
         # 渲染模板
         template = self.jinja_env.get_template("report.html")

src/chat/utils/statistic.py

@@ -3,8 +3,6 @@ from collections import defaultdict
 from datetime import datetime, timedelta
 from typing import Any
 
-import aiofiles
-
 from src.common.database.compatibility import db_get, db_query
 from src.common.database.core.models import LLMUsage, Messages, OnlineTime
 from src.common.logger import get_logger
@@ -16,7 +14,7 @@ logger = get_logger("maibot_statistic")
 # 彻底异步化：删除原同步包装器 _sync_db_get，所有数据库访问统一使用 await db_get。
 
 
-from .report_generator import HTMLReportGenerator, format_online_time
+from .report_generator import HTMLReportGenerator
 from .statistic_keys import *
 
 

src/chat/utils/statistic_keys.py

@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 """
 该模块用于存放统计数据相关的常量键名。
 """
@@ -61,4 +60,4 @@ STD_TIME_COST_BY_PROVIDER = "std_time_costs_by_provider"
 PIE_CHART_COST_BY_PROVIDER = "pie_chart_cost_by_provider"
 PIE_CHART_REQ_BY_PROVIDER = "pie_chart_req_by_provider"
 BAR_CHART_COST_BY_MODEL = "bar_chart_cost_by_model"
-BAR_CHART_REQ_BY_MODEL = "bar_chart_req_by_model"
+BAR_CHART_REQ_BY_MODEL = "bar_chart_req_by_model"