refactor: 改用动态函数实现运行时信息更新（更健壮的方案）

改进点：
1. builder.py: _build_runtime_section() 支持 callable 动态时间函数
2. agent_initializer.py: 传入 get_current_time 函数而非静态时间值
3. agent.py: _rebuild_runtime_section() 动态调用时间函数并重建该部分

优势：
- 解耦模板：不依赖具体的提示词格式
- 健壮性：提示词模板改变不会导致功能失效
- 向后兼容：保留对静态时间的支持
- 性能优化：只在需要时才计算时间

相比之前的正则匹配方案，这个方案更加优雅和可维护。

agent/prompt/builder.py

@@ -461,7 +461,7 @@ def _build_context_files_section(context_files: List[ContextFile], language: str
 
 
 def _build_runtime_section(runtime_info: Dict[str, Any], language: str) -> List[str]:
-    """构建运行时信息section"""
+    """构建运行时信息section - 支持动态时间"""
     if not runtime_info:
         return []
     
@@ -471,7 +471,17 @@ def _build_runtime_section(runtime_info: Dict[str, Any], language: str) -> List[
     ]
     
     # Add current time if available
-    if runtime_info.get("current_time"):
+    # Support dynamic time via callable function
+    if callable(runtime_info.get("_get_current_time")):
+        try:
+            time_info = runtime_info["_get_current_time"]()
+            time_line = f"当前时间: {time_info['time']} {time_info['weekday']} ({time_info['timezone']})"
+            lines.append(time_line)
+            lines.append("")
+        except Exception as e:
+            logger.warning(f"[PromptBuilder] Failed to get dynamic time: {e}")
+    elif runtime_info.get("current_time"):
+        # Fallback to static time for backward compatibility
         time_str = runtime_info["current_time"]
         weekday = runtime_info.get("weekday", "")
         timezone = runtime_info.get("timezone", "")

agent/protocol/agent.py

@@ -1,8 +1,6 @@
 import json
 import time
 import threading
-import datetime
-import re
 
 from common.log import logger
 from agent.protocol.models import LLMRequest, LLMModel
@@ -15,7 +13,8 @@ class Agent:
     def __init__(self, system_prompt: str, description: str = "AI Agent", model: LLMModel = None,
                  tools=None, output_mode="print", max_steps=100, max_context_tokens=None, 
                  context_reserve_tokens=None, memory_manager=None, name: str = None,
-                 workspace_dir: str = None, skill_manager=None, enable_skills: bool = True):
+                 workspace_dir: str = None, skill_manager=None, enable_skills: bool = True,
+                 runtime_info: dict = None):
         """
         Initialize the Agent with system prompt, model, description.
 
@@ -33,6 +32,7 @@ class Agent:
         :param workspace_dir: Optional workspace directory for workspace-specific skills
         :param skill_manager: Optional SkillManager instance (will be created if None and enable_skills=True)
         :param enable_skills: Whether to enable skills support (default: True)
+        :param runtime_info: Optional runtime info dict (with _get_current_time callable for dynamic time)
         """
         self.name = name or "Agent"
         self.system_prompt = system_prompt
@@ -50,6 +50,7 @@ class Agent:
         self.memory_manager = memory_manager  # Memory manager for auto memory flush
         self.workspace_dir = workspace_dir  # Workspace directory
         self.enable_skills = enable_skills  # Skills enabled flag
+        self.runtime_info = runtime_info  # Runtime info for dynamic time update
         
         # Initialize skill manager
         self.skill_manager = None
@@ -107,51 +108,57 @@ class Agent:
         :return: Complete system prompt
         """
         # Skills are now included in system_prompt by PromptBuilder
-        # Update runtime info (timestamp) dynamically before returning
-        return self._update_runtime_info(self.system_prompt)
+        # If runtime_info contains dynamic time function, rebuild runtime section
+        if self.runtime_info and callable(self.runtime_info.get('_get_current_time')):
+            return self._rebuild_runtime_section(self.system_prompt)
+        return self.system_prompt
     
-    def _update_runtime_info(self, prompt: str) -> str:
+    def _rebuild_runtime_section(self, prompt: str) -> str:
         """
-        Update runtime information (timestamp) in the system prompt.
+        Rebuild runtime info section with current time.
         
-        This ensures the model always has the current time, even if the
-        agent was initialized hours ago.
+        This method dynamically updates the runtime info section by calling
+        the _get_current_time function from runtime_info.
         
         :param prompt: Original system prompt
-        :return: Updated system prompt with current time
+        :return: Updated system prompt with current runtime info
         """
-        # Find the runtime info section
-        runtime_section_pattern = r'(## 运行时信息\s*\n\s*\n)(当前时间: )([^\n]+)(\s+星期[一二三四五六日])(\s+\([^)]+\))?'
-        
-        # Get current time info
-        now = datetime.datetime.now()
-        
-        # Get timezone
         try:
-            offset = -time.timezone if not time.daylight else -time.altzone
-            hours = offset // 3600
-            minutes = (offset % 3600) // 60
-            timezone_name = f"UTC{hours:+03d}:{minutes:02d}" if minutes else f"UTC{hours:+03d}"
-        except Exception:
-            timezone_name = "UTC"
-        
-        # Chinese weekday mapping
-        weekday_map = {
-            'Monday': '星期一', 'Tuesday': '星期二', 'Wednesday': '星期三',
-            'Thursday': '星期四', 'Friday': '星期五', 'Saturday': '星期六', 'Sunday': '星期日'
-        }
-        weekday_zh = weekday_map.get(now.strftime("%A"), now.strftime("%A"))
-        
-        # Build new time string
-        new_time = now.strftime("%Y-%m-%d %H:%M:%S")
-        
-        # Replace the time in the prompt
-        def replace_time(match):
-            return f"{match.group(1)}{match.group(2)}{new_time} {weekday_zh} ({timezone_name})"
-        
-        updated_prompt = re.sub(runtime_section_pattern, replace_time, prompt)
-        
-        return updated_prompt
+            # Get current time dynamically
+            time_info = self.runtime_info['_get_current_time']()
+            
+            # Build new runtime section
+            runtime_lines = [
+                "\n## 运行时信息\n",
+                "\n",
+                f"当前时间: {time_info['time']} {time_info['weekday']} ({time_info['timezone']})\n",
+                "\n"
+            ]
+            
+            # Add other runtime info
+            runtime_parts = []
+            if self.runtime_info.get("model"):
+                runtime_parts.append(f"模型={self.runtime_info['model']}")
+            if self.runtime_info.get("workspace"):
+                runtime_parts.append(f"工作空间={self.runtime_info['workspace']}")
+            if self.runtime_info.get("channel") and self.runtime_info.get("channel") != "web":
+                runtime_parts.append(f"渠道={self.runtime_info['channel']}")
+            
+            if runtime_parts:
+                runtime_lines.append("运行时: " + " | ".join(runtime_parts) + "\n")
+                runtime_lines.append("\n")
+            
+            new_runtime_section = "".join(runtime_lines)
+            
+            # Find and replace the runtime section
+            import re
+            pattern = r'\n## 运行时信息\s*\n.*?(?=\n##|\Z)'
+            updated_prompt = re.sub(pattern, new_runtime_section.rstrip('\n'), prompt, flags=re.DOTALL)
+            
+            return updated_prompt
+        except Exception as e:
+            logger.warning(f"Failed to rebuild runtime section: {e}")
+            return prompt
     
     def refresh_skills(self):
         """Refresh the loaded skills."""

bridge/agent_initializer.py

@@ -110,7 +110,8 @@ class AgentInitializer:
             workspace_dir=workspace_root,
             skill_manager=skill_manager,
             enable_skills=True,
-            max_context_tokens=max_context_tokens
+            max_context_tokens=max_context_tokens,
+            runtime_info=runtime_info  # Pass runtime_info for dynamic time updates
         )
         
         # Attach memory manager
@@ -289,34 +290,40 @@ class AgentInitializer:
             return None
     
     def _get_runtime_info(self, workspace_root: str):
-        """Get runtime information"""
+        """Get runtime information with dynamic time support"""
         from config import conf
         
-        now = datetime.datetime.now()
-        
-        # Get timezone info
-        try:
-            offset = -time.timezone if not time.daylight else -time.altzone
-            hours = offset // 3600
-            minutes = (offset % 3600) // 60
-            timezone_name = f"UTC{hours:+03d}:{minutes:02d}" if minutes else f"UTC{hours:+03d}"
-        except Exception:
-            timezone_name = "UTC"
-        
-        # Chinese weekday mapping
-        weekday_map = {
-            'Monday': '星期一', 'Tuesday': '星期二', 'Wednesday': '星期三',
-            'Thursday': '星期四', 'Friday': '星期五', 'Saturday': '星期六', 'Sunday': '星期日'
-        }
-        weekday_zh = weekday_map.get(now.strftime("%A"), now.strftime("%A"))
+        def get_current_time():
+            """Get current time dynamically - called each time system prompt is accessed"""
+            now = datetime.datetime.now()
+            
+            # Get timezone info
+            try:
+                offset = -time.timezone if not time.daylight else -time.altzone
+                hours = offset // 3600
+                minutes = (offset % 3600) // 60
+                timezone_name = f"UTC{hours:+03d}:{minutes:02d}" if minutes else f"UTC{hours:+03d}"
+            except Exception:
+                timezone_name = "UTC"
+            
+            # Chinese weekday mapping
+            weekday_map = {
+                'Monday': '星期一', 'Tuesday': '星期二', 'Wednesday': '星期三',
+                'Thursday': '星期四', 'Friday': '星期五', 'Saturday': '星期六', 'Sunday': '星期日'
+            }
+            weekday_zh = weekday_map.get(now.strftime("%A"), now.strftime("%A"))
+            
+            return {
+                'time': now.strftime("%Y-%m-%d %H:%M:%S"),
+                'weekday': weekday_zh,
+                'timezone': timezone_name
+            }
         
         return {
             "model": conf().get("model", "unknown"),
             "workspace": workspace_root,
             "channel": conf().get("channel_type", "unknown"),
-            "current_time": now.strftime("%Y-%m-%d %H:%M:%S"),
-            "weekday": weekday_zh,
-            "timezone": timezone_name
+            "_get_current_time": get_current_time  # Dynamic time function
         }
     
     def _migrate_config_to_env(self, workspace_root: str):