diff --git a/agent/memory/embedding.py b/agent/memory/embedding.py
index 509370b..db182f1 100644
--- a/agent/memory/embedding.py
+++ b/agent/memory/embedding.py
@@ -45,8 +45,9 @@ class OpenAIEmbeddingProvider(EmbeddingProvider):
         self.api_key = api_key
         self.api_base = api_base or "https://api.openai.com/v1"
 
-        if not self.api_key:
-            raise ValueError("OpenAI API key is required")
+        # Validate API key
+        if not self.api_key or self.api_key in ["", "YOUR API KEY", "YOUR_API_KEY"]:
+            raise ValueError("OpenAI API key is not configured. Please set 'open_ai_api_key' in config.json")
 
         # Set dimensions based on model
         self._dimensions = 1536 if "small" in model else 3072
@@ -65,9 +66,21 @@ class OpenAIEmbeddingProvider(EmbeddingProvider):
             "model": self.model
         }
 
-        response = requests.post(url, headers=headers, json=data, timeout=30)
-        response.raise_for_status()
-        return response.json()
+        try:
+            response = requests.post(url, headers=headers, json=data, timeout=5)
+            response.raise_for_status()
+            return response.json()
+        except requests.exceptions.ConnectionError as e:
+            raise ConnectionError(f"Failed to connect to OpenAI API at {url}. Please check your network connection and api_base configuration. Error: {str(e)}")
+        except requests.exceptions.Timeout as e:
+            raise TimeoutError(f"OpenAI API request timed out after 10s. Please check your network connection. Error: {str(e)}")
+        except requests.exceptions.HTTPError as e:
+            if e.response.status_code == 401:
+                raise ValueError(f"Invalid OpenAI API key. Please check your 'open_ai_api_key' in config.json")
+            elif e.response.status_code == 429:
+                raise ValueError(f"OpenAI API rate limit exceeded. Please try again later.")
+            else:
+                raise ValueError(f"OpenAI API request failed: {e.response.status_code} - {e.response.text}")
 
     def embed(self, text: str) -> List[float]:
         """Generate embedding for text"""
diff --git a/agent/prompt/builder.py b/agent/prompt/builder.py
index c9ae35b..c48989a 100644
--- a/agent/prompt/builder.py
+++ b/agent/prompt/builder.py
@@ -279,11 +279,16 @@ def _build_skills_section(skill_manager: Any, tools: Optional[List[Any]], langua
     # 添加技能列表（通过skill_manager获取）
     try:
         skills_prompt = skill_manager.build_skills_prompt()
+        logger.debug(f"[PromptBuilder] Skills prompt length: {len(skills_prompt) if skills_prompt else 0}")
         if skills_prompt:
             lines.append(skills_prompt.strip())
             lines.append("")
+        else:
+            logger.warning("[PromptBuilder] No skills prompt generated - skills_prompt is empty")
     except Exception as e:
         logger.warning(f"Failed to build skills prompt: {e}")
+        import traceback
+        logger.debug(f"Skills prompt error traceback: {traceback.format_exc()}")
     
     return lines
 
@@ -404,15 +409,17 @@ def _build_workspace_section(workspace_dir: str, language: str, is_first_convers
             "这是你的第一次对话！进行以下流程：",
             "",
             "1. **表达初次启动的感觉** - 像是第一次睁开眼看到世界，带着好奇和期待",
-            "2. **简短打招呼后，询问核心问题**：",
+            "2. **简短介绍能力**：一行说明你能帮助解答问题、管理计算机、创造技能，且拥有长期记忆能不断成长",
+            "3. **询问核心问题**：",
             "   - 你希望给我起个什么名字？",
             "   - 我该怎么称呼你？",
-            "   - 你希望我们是什么样的交流风格？（需要举例，如：专业严谨、轻松幽默、温暖友好等）",
-            "3. **语言风格**：温暖但不过度诗意，带点科技感，保持清晰",
-            "4. **问题格式**：用分点或换行，让问题清晰易读",
+            "   - 你希望我们是什么样的交流风格？（一行列举选项：如专业严谨、轻松幽默、温暖友好、简洁高效等）",
+            "4. **风格要求**：温暖自然、简洁清晰，整体控制在 100 字以内",
             "5. 收到回复后，用 `write` 工具保存到 USER.md 和 SOUL.md",
             "",
-            "**注意事项**:",
+            "**重要提醒**:",
+            "- SOUL.md 和 USER.md 已经在系统提示词中加载，无需再次读取",
+            "- 能力介绍和交流风格选项都只要一行，保持精简",
             "- 不要问太多其他信息（职业、时区等可以后续自然了解）",
             "",
         ])
diff --git a/agent/protocol/agent_stream.py b/agent/protocol/agent_stream.py
index 2b1c883..9b3f1a6 100644
--- a/agent/protocol/agent_stream.py
+++ b/agent/protocol/agent_stream.py
@@ -248,9 +248,14 @@ class AgentStreamExecutor:
                 # Log tool calls with arguments
                 tool_calls_str = []
                 for tc in tool_calls:
-                    args_str = ', '.join([f"{k}={v}" for k, v in tc['arguments'].items()])
-                    if args_str:
-                        tool_calls_str.append(f"{tc['name']}({args_str})")
+                    # Safely handle None or missing arguments
+                    args = tc.get('arguments') or {}
+                    if isinstance(args, dict):
+                        args_str = ', '.join([f"{k}={v}" for k, v in args.items()])
+                        if args_str:
+                            tool_calls_str.append(f"{tc['name']}({args_str})")
+                        else:
+                            tool_calls_str.append(tc['name'])
                     else:
                         tool_calls_str.append(tc['name'])
                 logger.info(f"🔧 {', '.join(tool_calls_str)}")
@@ -511,13 +516,13 @@ class AgentStreamExecutor:
                         stop_reason = finish_reason
 
                     # Handle text content
-                    if "content" in delta and delta["content"]:
-                        content_delta = delta["content"]
+                    content_delta = delta.get("content") or ""
+                    if content_delta:
                         full_content += content_delta
                         self._emit_event("message_update", {"delta": content_delta})
 
                     # Handle tool calls
-                    if "tool_calls" in delta:
+                    if "tool_calls" in delta and delta["tool_calls"]:
                         for tc_delta in delta["tool_calls"]:
                             index = tc_delta.get("index", 0)
 
@@ -577,7 +582,10 @@ class AgentStreamExecutor:
                         "抱歉，之前的对话出现了问题。我已清空历史记录，请重新发送你的消息。"
                     )
             
-            # Check if error is retryable (timeout, connection, rate limit, server busy, etc.)
+            # Check if error is rate limit (429)
+            is_rate_limit = '429' in error_str_lower or 'rate limit' in error_str_lower
+            
+            # Check if error is retryable (timeout, connection, server busy, etc.)
             is_retryable = any(keyword in error_str_lower for keyword in [
                 'timeout', 'timed out', 'connection', 'network', 
                 'rate limit', 'overloaded', 'unavailable', 'busy', 'retry',
@@ -585,7 +593,12 @@ class AgentStreamExecutor:
             ])
             
             if is_retryable and retry_count < max_retries:
-                wait_time = (retry_count + 1) * 2  # Exponential backoff: 2s, 4s, 6s
+                # Rate limit needs longer wait time
+                if is_rate_limit:
+                    wait_time = 30 + (retry_count * 15)  # 30s, 45s, 60s for rate limit
+                else:
+                    wait_time = (retry_count + 1) * 2  # 2s, 4s, 6s for other errors
+                
                 logger.warning(f"⚠️ LLM API error (attempt {retry_count + 1}/{max_retries}): {e}")
                 logger.info(f"Retrying in {wait_time}s...")
                 time.sleep(wait_time)
@@ -606,11 +619,15 @@ class AgentStreamExecutor:
         for idx in sorted(tool_calls_buffer.keys()):
             tc = tool_calls_buffer[idx]
             try:
-                arguments = json.loads(tc["arguments"]) if tc["arguments"] else {}
+                # Safely get arguments, handle None case
+                args_str = tc.get("arguments") or ""
+                arguments = json.loads(args_str) if args_str else {}
             except json.JSONDecodeError as e:
-                args_preview = tc['arguments'][:200] if len(tc['arguments']) > 200 else tc['arguments']
+                # Handle None or invalid arguments safely
+                args_str = tc.get('arguments') or ""
+                args_preview = args_str[:200] if len(args_str) > 200 else args_str
                 logger.error(f"Failed to parse tool arguments for {tc['name']}")
-                logger.error(f"Arguments length: {len(tc['arguments'])} chars")
+                logger.error(f"Arguments length: {len(args_str)} chars")
                 logger.error(f"Arguments preview: {args_preview}...")
                 logger.error(f"JSON decode error: {e}")
                 
@@ -661,9 +678,9 @@ class AgentStreamExecutor:
             for tc in tool_calls:
                 assistant_msg["content"].append({
                     "type": "tool_use",
-                    "id": tc["id"],
-                    "name": tc["name"],
-                    "input": tc["arguments"]
+                    "id": tc.get("id", ""),
+                    "name": tc.get("name", ""),
+                    "input": tc.get("arguments", {})
                 })
         
         # Only append if content is not empty
diff --git a/agent/skills/loader.py b/agent/skills/loader.py
index cc77d32..db4fd03 100644
--- a/agent/skills/loader.py
+++ b/agent/skills/loader.py
@@ -137,6 +137,18 @@ class SkillLoader:
         name = frontmatter.get('name', parent_dir_name)
         description = frontmatter.get('description', '')
         
+        # Normalize name (handle both string and list)
+        if isinstance(name, list):
+            name = name[0] if name else parent_dir_name
+        elif not isinstance(name, str):
+            name = str(name) if name else parent_dir_name
+        
+        # Normalize description (handle both string and list)
+        if isinstance(description, list):
+            description = ' '.join(str(d) for d in description if d)
+        elif not isinstance(description, str):
+            description = str(description) if description else ''
+        
         # Special handling for linkai-agent: dynamically load apps from config.json
         if name == 'linkai-agent':
             description = self._load_linkai_agent_description(skill_dir, description)
diff --git a/agent/skills/manager.py b/agent/skills/manager.py
index bf9593f..adb4b01 100644
--- a/agent/skills/manager.py
+++ b/agent/skills/manager.py
@@ -103,7 +103,21 @@ class SkillManager:
         
         # Apply skill filter
         if skill_filter is not None:
-            normalized = [name.strip() for name in skill_filter if name.strip()]
+            # Flatten and normalize skill names (handle both strings and nested lists)
+            normalized = []
+            for item in skill_filter:
+                if isinstance(item, str):
+                    name = item.strip()
+                    if name:
+                        normalized.append(name)
+                elif isinstance(item, list):
+                    # Handle nested lists
+                    for subitem in item:
+                        if isinstance(subitem, str):
+                            name = subitem.strip()
+                            if name:
+                                normalized.append(name)
+            
             if normalized:
                 entries = [e for e in entries if e.skill.name in normalized]
         
@@ -123,8 +137,15 @@ class SkillManager:
         :param skill_filter: Optional list of skill names to include
         :return: Formatted skills prompt
         """
+        from common.log import logger
         entries = self.filter_skills(skill_filter=skill_filter, include_disabled=False)
-        return format_skill_entries_for_prompt(entries)
+        logger.debug(f"[SkillManager] Filtered {len(entries)} skills for prompt (total: {len(self.skills)})")
+        if entries:
+            skill_names = [e.skill.name for e in entries]
+            logger.debug(f"[SkillManager] Skills to include: {skill_names}")
+        result = format_skill_entries_for_prompt(entries)
+        logger.debug(f"[SkillManager] Generated prompt length: {len(result)}")
+        return result
     
     def build_skill_snapshot(
         self,
diff --git a/app.py b/app.py
index ad0cfca..022fdd7 100644
--- a/app.py
+++ b/app.py
@@ -59,23 +59,6 @@ def run():
             os.environ["WECHATY_LOG"] = "warn"
 
         start_channel(channel_name)
-        
-        # 打印系统运行成功信息
-        logger.info("")
-        logger.info("=" * 50)
-        if conf().get("agent", False):
-            logger.info("✅ System started successfully!")
-            logger.info("🐮 Cow Agent is running")
-            logger.info(f"   Channel: {channel_name}")
-            logger.info(f"   Model: {conf().get('model', 'unknown')}")
-            logger.info(f"   Workspace: {conf().get('agent_workspace', '~/cow')}")
-        else:
-            logger.info("✅ System started successfully!")
-            logger.info("🤖 ChatBot is running")
-            logger.info(f"   Channel: {channel_name}")
-            logger.info(f"   Model: {conf().get('model', 'unknown')}")
-        logger.info("=" * 50)
-        logger.info("")
 
         while True:
             time.sleep(1)
diff --git a/bridge/agent_bridge.py b/bridge/agent_bridge.py
index 43aefc7..17b653b 100644
--- a/bridge/agent_bridge.py
+++ b/bridge/agent_bridge.py
@@ -10,6 +10,8 @@ from models.openai_compatible_bot import OpenAICompatibleBot
 from bridge.bridge import Bridge
 from bridge.context import Context
 from bridge.reply import Reply, ReplyType
+from bridge.agent_event_handler import AgentEventHandler
+from bridge.agent_initializer import AgentInitializer
 from common import const
 from common.log import logger
 
@@ -127,9 +129,6 @@ class AgentLLMModel(LLMModel):
         try:
             if hasattr(self.bot, 'call_with_tools'):
                 # Use tool-enabled streaming call if available
-                # Ensure max_tokens is an integer, use default if None
-                max_tokens = request.max_tokens if request.max_tokens is not None else 4096
-                
                 # Extract system prompt if present
                 system_prompt = getattr(request, 'system', None)
                 
@@ -138,10 +137,13 @@ class AgentLLMModel(LLMModel):
                     'messages': request.messages,
                     'tools': getattr(request, 'tools', None),
                     'stream': True,
-                    'max_tokens': max_tokens,
                     'model': self.model  # Pass model parameter
                 }
                 
+                # Only pass max_tokens if explicitly set, let the bot use its default
+                if request.max_tokens is not None:
+                    kwargs['max_tokens'] = request.max_tokens
+                
                 # Add system prompt if present
                 if system_prompt:
                     kwargs['system'] = system_prompt
@@ -182,6 +184,9 @@ class AgentBridge:
         self.default_agent = None  # For backward compatibility (no session_id)
         self.agent: Optional[Agent] = None
         self.scheduler_initialized = False
+        
+        # Create helper instances
+        self.initializer = AgentInitializer(bridge, self)
     def create_agent(self, system_prompt: str, tools: List = None, **kwargs) -> Agent:
         """
         Create the super agent with COW integration
@@ -252,492 +257,19 @@ class AgentBridge:
         
         # Check if agent exists for this session
         if session_id not in self.agents:
-            logger.info(f"[AgentBridge] Creating new agent for session: {session_id}")
             self._init_agent_for_session(session_id)
         
         return self.agents[session_id]
     
     def _init_default_agent(self):
-        """Initialize default super agent with new prompt system"""
-        from config import conf
-        import os
-
-        # Get workspace from config
-        workspace_root = os.path.expanduser(conf().get("agent_workspace", "~/cow"))
-
-        # Migrate API keys from config.json to environment variables (if not already set)
-        self._migrate_config_to_env(workspace_root)
-        
-        # Load environment variables from secure .env file location
-        env_file = os.path.expanduser("~/.cow/.env")
-        if os.path.exists(env_file):
-            try:
-                from dotenv import load_dotenv
-                load_dotenv(env_file, override=True)
-                logger.info(f"[AgentBridge] Loaded environment variables from {env_file}")
-            except ImportError:
-                logger.warning("[AgentBridge] python-dotenv not installed, skipping .env file loading")
-            except Exception as e:
-                logger.warning(f"[AgentBridge] Failed to load .env file: {e}")
-
-        # Initialize workspace and create template files
-        from agent.prompt import ensure_workspace, load_context_files, PromptBuilder
-
-        workspace_files = ensure_workspace(workspace_root, create_templates=True)
-        logger.info(f"[AgentBridge] Workspace initialized at: {workspace_root}")
-
-        # Setup memory system
-        memory_manager = None
-        memory_tools = []
-
-        try:
-            # Try to initialize memory system
-            from agent.memory import MemoryManager, MemoryConfig
-            from agent.tools import MemorySearchTool, MemoryGetTool
-
-            # 从 config.json 读取 OpenAI 配置
-            openai_api_key = conf().get("open_ai_api_key", "")
-            openai_api_base = conf().get("open_ai_api_base", "")
-            
-            # 尝试初始化 OpenAI embedding provider
-            embedding_provider = None
-            if openai_api_key:
-                try:
-                    from agent.memory import create_embedding_provider
-                    embedding_provider = create_embedding_provider(
-                        provider="openai",
-                        model="text-embedding-3-small",
-                        api_key=openai_api_key,
-                        api_base=openai_api_base or "https://api.openai.com/v1"
-                    )
-                    logger.info(f"[AgentBridge] OpenAI embedding initialized")
-                except Exception as embed_error:
-                    logger.warning(f"[AgentBridge] OpenAI embedding failed: {embed_error}")
-                    logger.info(f"[AgentBridge] Using keyword-only search")
-            else:
-                logger.info(f"[AgentBridge] No OpenAI API key, using keyword-only search")
-            
-            # 创建 memory config
-            memory_config = MemoryConfig(workspace_root=workspace_root)
-            
-            # 创建 memory manager
-            memory_manager = MemoryManager(memory_config, embedding_provider=embedding_provider)
-            
-            # 初始化时执行一次 sync，确保数据库有数据
-            import asyncio
-            try:
-                # 尝试在当前事件循环中执行
-                loop = asyncio.get_event_loop()
-                if loop.is_running():
-                    # 如果事件循环正在运行，创建任务
-                    asyncio.create_task(memory_manager.sync())
-                    logger.info("[AgentBridge] Memory sync scheduled")
-                else:
-                    # 如果没有运行的循环，直接执行
-                    loop.run_until_complete(memory_manager.sync())
-                    logger.info("[AgentBridge] Memory synced successfully")
-            except RuntimeError:
-                # 没有事件循环，创建新的
-                asyncio.run(memory_manager.sync())
-                logger.info("[AgentBridge] Memory synced successfully")
-            except Exception as e:
-                logger.warning(f"[AgentBridge] Memory sync failed: {e}")
-            
-            # Create memory tools
-            memory_tools = [
-                MemorySearchTool(memory_manager),
-                MemoryGetTool(memory_manager)
-            ]
-            
-            logger.info(f"[AgentBridge] Memory system initialized")
-            
-        except Exception as e:
-            logger.warning(f"[AgentBridge] Memory system not available: {e}")
-            logger.info("[AgentBridge] Continuing without memory features")
-
-        # Use ToolManager to dynamically load all available tools
-        from agent.tools import ToolManager
-        tool_manager = ToolManager()
-        tool_manager.load_tools()
-
-        # Create tool instances for all available tools
-        tools = []
-        file_config = {
-            "cwd": workspace_root,
-            "memory_manager": memory_manager
-        } if memory_manager else {"cwd": workspace_root}
-
-        for tool_name in tool_manager.tool_classes.keys():
-            try:
-                # Special handling for EnvConfig tool - pass agent_bridge reference
-                if tool_name == "env_config":
-                    from agent.tools import EnvConfig
-                    tool = EnvConfig({
-                        "agent_bridge": self  # Pass self reference for hot reload
-                    })
-                else:
-                    tool = tool_manager.create_tool(tool_name)
-                
-                if tool:
-                    # Apply workspace config to file operation tools
-                    if tool_name in ['read', 'write', 'edit', 'bash', 'grep', 'find', 'ls']:
-                        tool.config = file_config
-                        tool.cwd = file_config.get("cwd", tool.cwd if hasattr(tool, 'cwd') else None)
-                        if 'memory_manager' in file_config:
-                            tool.memory_manager = file_config['memory_manager']
-                    tools.append(tool)
-                    logger.debug(f"[AgentBridge] Loaded tool: {tool_name}")
-            except Exception as e:
-                logger.warning(f"[AgentBridge] Failed to load tool {tool_name}: {e}")
-
-        # Add memory tools
-        if memory_tools:
-            tools.extend(memory_tools)
-            logger.info(f"[AgentBridge] Added {len(memory_tools)} memory tools")
-
-        # Initialize scheduler service (once)
-        if not self.scheduler_initialized:
-            try:
-                from agent.tools.scheduler.integration import init_scheduler
-                if init_scheduler(self):
-                    self.scheduler_initialized = True
-                    logger.info("[AgentBridge] Scheduler service initialized")
-            except Exception as e:
-                logger.warning(f"[AgentBridge] Failed to initialize scheduler: {e}")
-        
-        # Inject scheduler dependencies into SchedulerTool instances
-        if self.scheduler_initialized:
-            try:
-                from agent.tools.scheduler.integration import get_task_store, get_scheduler_service
-                from agent.tools import SchedulerTool
-                
-                task_store = get_task_store()
-                scheduler_service = get_scheduler_service()
-                
-                for tool in tools:
-                    if isinstance(tool, SchedulerTool):
-                        tool.task_store = task_store
-                        tool.scheduler_service = scheduler_service
-                        if not tool.config:
-                            tool.config = {}
-                        tool.config["channel_type"] = conf().get("channel_type", "unknown")
-                        logger.debug("[AgentBridge] Injected scheduler dependencies into SchedulerTool")
-            except Exception as e:
-                logger.warning(f"[AgentBridge] Failed to inject scheduler dependencies: {e}")
-
-        logger.info(f"[AgentBridge] Loaded {len(tools)} tools: {[t.name for t in tools]}")
-
-        # Load context files (SOUL.md, USER.md, etc.)
-        context_files = load_context_files(workspace_root)
-        logger.info(f"[AgentBridge] Loaded {len(context_files)} context files: {[f.path for f in context_files]}")
-
-        # Check if this is the first conversation
-        from agent.prompt.workspace import is_first_conversation, mark_conversation_started
-        is_first = is_first_conversation(workspace_root)
-        if is_first:
-            logger.info("[AgentBridge] First conversation detected")
-        
-        # Build system prompt using new prompt builder
-        prompt_builder = PromptBuilder(
-            workspace_dir=workspace_root,
-            language="zh"
-        )
-
-        # Get runtime info
-        runtime_info = {
-            "model": conf().get("model", "unknown"),
-            "workspace": workspace_root,
-            "channel": conf().get("channel_type", "unknown")  # Get from config
-        }
-
-        system_prompt = prompt_builder.build(
-            tools=tools,
-            context_files=context_files,
-            memory_manager=memory_manager,
-            runtime_info=runtime_info,
-            is_first_conversation=is_first
-        )
-        
-        # Mark conversation as started (will be saved after first user message)
-        if is_first:
-            mark_conversation_started(workspace_root)
-
-        logger.info("[AgentBridge] System prompt built successfully")
-
-        # Get cost control parameters from config
-        max_steps = conf().get("agent_max_steps", 20)
-        max_context_tokens = conf().get("agent_max_context_tokens", 50000)
-        
-        # Create agent with configured tools and workspace
-        agent = self.create_agent(
-            system_prompt=system_prompt,
-            tools=tools,
-            max_steps=max_steps,
-            output_mode="logger",
-            workspace_dir=workspace_root,  # Pass workspace to agent for skills loading
-            enable_skills=True,  # Enable skills auto-loading
-            max_context_tokens=max_context_tokens
-        )
-
-        # Attach memory manager to agent if available
-        if memory_manager:
-            agent.memory_manager = memory_manager
-            logger.info(f"[AgentBridge] Memory manager attached to agent")
-        
-        # Store as default agent
+        """Initialize default super agent"""
+        agent = self.initializer.initialize_agent(session_id=None)
         self.default_agent = agent
     
     def _init_agent_for_session(self, session_id: str):
-        """
-        Initialize agent for a specific session
-        Reuses the same configuration as default agent
-        """
-        from config import conf
-        import os
-
-        # Get workspace from config
-        workspace_root = os.path.expanduser(conf().get("agent_workspace", "~/cow"))
-
-        # Migrate API keys from config.json to environment variables (if not already set)
-        self._migrate_config_to_env(workspace_root)
-        
-        # Load environment variables from secure .env file location
-        env_file = os.path.expanduser("~/.cow/.env")
-        if os.path.exists(env_file):
-            try:
-                from dotenv import load_dotenv
-                load_dotenv(env_file, override=True)
-                logger.debug(f"[AgentBridge] Loaded environment variables from {env_file} for session {session_id}")
-            except ImportError:
-                logger.warning(f"[AgentBridge] python-dotenv not installed, skipping .env file loading for session {session_id}")
-            except Exception as e:
-                logger.warning(f"[AgentBridge] Failed to load .env file for session {session_id}: {e}")
-        
-        # Migrate API keys from config.json to environment variables (if not already set)
-        self._migrate_config_to_env(workspace_root)
-
-        # Initialize workspace
-        from agent.prompt import ensure_workspace, load_context_files, PromptBuilder
-
-        workspace_files = ensure_workspace(workspace_root, create_templates=True)
-
-        # Setup memory system
-        memory_manager = None
-        memory_tools = []
-
-        try:
-            from agent.memory import MemoryManager, MemoryConfig, create_embedding_provider
-            from agent.tools import MemorySearchTool, MemoryGetTool
-
-            # 从 config.json 读取 OpenAI 配置
-            openai_api_key = conf().get("open_ai_api_key", "")
-            openai_api_base = conf().get("open_ai_api_base", "")
-            
-            # 尝试初始化 OpenAI embedding provider
-            embedding_provider = None
-            if openai_api_key:
-                try:
-                    embedding_provider = create_embedding_provider(
-                        provider="openai",
-                        model="text-embedding-3-small",
-                        api_key=openai_api_key,
-                        api_base=openai_api_base or "https://api.openai.com/v1"
-                    )
-                    logger.debug(f"[AgentBridge] OpenAI embedding initialized for session {session_id}")
-                except Exception as embed_error:
-                    logger.warning(f"[AgentBridge] OpenAI embedding failed for session {session_id}: {embed_error}")
-                    logger.info(f"[AgentBridge] Using keyword-only search for session {session_id}")
-            else:
-                logger.debug(f"[AgentBridge] No OpenAI API key, using keyword-only search for session {session_id}")
-            
-            # 创建 memory config
-            memory_config = MemoryConfig(workspace_root=workspace_root)
-            
-            # 创建 memory manager
-            memory_manager = MemoryManager(memory_config, embedding_provider=embedding_provider)
-            
-            # 初始化时执行一次 sync，确保数据库有数据
-            import asyncio
-            try:
-                # 尝试在当前事件循环中执行
-                loop = asyncio.get_event_loop()
-                if loop.is_running():
-                    # 如果事件循环正在运行，创建任务
-                    asyncio.create_task(memory_manager.sync())
-                    logger.debug(f"[AgentBridge] Memory sync scheduled for session {session_id}")
-                else:
-                    # 如果没有运行的循环，直接执行
-                    loop.run_until_complete(memory_manager.sync())
-                    logger.debug(f"[AgentBridge] Memory synced successfully for session {session_id}")
-            except RuntimeError:
-                # 没有事件循环，创建新的
-                asyncio.run(memory_manager.sync())
-                logger.debug(f"[AgentBridge] Memory synced successfully for session {session_id}")
-            except Exception as sync_error:
-                logger.warning(f"[AgentBridge] Memory sync failed for session {session_id}: {sync_error}")
-            
-            memory_tools = [
-                MemorySearchTool(memory_manager),
-                MemoryGetTool(memory_manager)
-            ]
-            
-        except Exception as e:
-            logger.warning(f"[AgentBridge] Memory system not available for session {session_id}: {e}")
-            import traceback
-            logger.warning(f"[AgentBridge] Memory init traceback: {traceback.format_exc()}")
-
-        # Load tools
-        from agent.tools import ToolManager
-        tool_manager = ToolManager()
-        tool_manager.load_tools()
-
-        tools = []
-        file_config = {
-            "cwd": workspace_root,
-            "memory_manager": memory_manager
-        } if memory_manager else {"cwd": workspace_root}
-
-        for tool_name in tool_manager.tool_classes.keys():
-            try:
-                tool = tool_manager.create_tool(tool_name)
-                if tool:
-                    if tool_name in ['read', 'write', 'edit', 'bash', 'grep', 'find', 'ls']:
-                        tool.config = file_config
-                        tool.cwd = file_config.get("cwd", tool.cwd if hasattr(tool, 'cwd') else None)
-                        if 'memory_manager' in file_config:
-                            tool.memory_manager = file_config['memory_manager']
-                    tools.append(tool)
-            except Exception as e:
-                logger.warning(f"[AgentBridge] Failed to load tool {tool_name} for session {session_id}: {e}")
-
-        if memory_tools:
-            tools.extend(memory_tools)
-        
-        # Initialize scheduler service (once, if not already initialized)
-        if not self.scheduler_initialized:
-            try:
-                from agent.tools.scheduler.integration import init_scheduler
-                if init_scheduler(self):
-                    self.scheduler_initialized = True
-                    logger.debug(f"[AgentBridge] Scheduler service initialized for session {session_id}")
-            except Exception as e:
-                logger.warning(f"[AgentBridge] Failed to initialize scheduler for session {session_id}: {e}")
-        
-        # Inject scheduler dependencies into SchedulerTool instances
-        if self.scheduler_initialized:
-            try:
-                from agent.tools.scheduler.integration import get_task_store, get_scheduler_service
-                from agent.tools import SchedulerTool
-                
-                task_store = get_task_store()
-                scheduler_service = get_scheduler_service()
-                
-                for tool in tools:
-                    if isinstance(tool, SchedulerTool):
-                        tool.task_store = task_store
-                        tool.scheduler_service = scheduler_service
-                        if not tool.config:
-                            tool.config = {}
-                        tool.config["channel_type"] = conf().get("channel_type", "unknown")
-                        logger.debug(f"[AgentBridge] Injected scheduler dependencies for session {session_id}")
-            except Exception as e:
-                logger.warning(f"[AgentBridge] Failed to inject scheduler dependencies for session {session_id}: {e}")
-
-        # Load context files
-        context_files = load_context_files(workspace_root)
-
-        # Initialize skill manager
-        skill_manager = None
-        try:
-            from agent.skills import SkillManager
-            skill_manager = SkillManager(workspace_dir=workspace_root)
-            logger.debug(f"[AgentBridge] Initialized SkillManager with {len(skill_manager.skills)} skills for session {session_id}")
-        except Exception as e:
-            logger.warning(f"[AgentBridge] Failed to initialize SkillManager for session {session_id}: {e}")
-
-        # Check if this is the first conversation
-        from agent.prompt.workspace import is_first_conversation, mark_conversation_started
-        is_first = is_first_conversation(workspace_root)
-        
-        # Build system prompt
-        prompt_builder = PromptBuilder(
-            workspace_dir=workspace_root,
-            language="zh"
-        )
-
-        # Get current time and timezone info
-        import datetime
-        import time
-        
-        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
-            if minutes:
-                timezone_name = f"UTC{hours:+03d}:{minutes:02d}"
-            else:
-                timezone_name = 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"))
-        
-        runtime_info = {
-            "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
-        }
-
-        system_prompt = prompt_builder.build(
-            tools=tools,
-            context_files=context_files,
-            skill_manager=skill_manager,
-            memory_manager=memory_manager,
-            runtime_info=runtime_info,
-            is_first_conversation=is_first
-        )
-        
-        if is_first:
-            mark_conversation_started(workspace_root)
-
-        # Get cost control parameters from config
-        max_steps = conf().get("agent_max_steps", 20)
-        max_context_tokens = conf().get("agent_max_context_tokens", 50000)
-
-        # Create agent for this session
-        agent = self.create_agent(
-            system_prompt=system_prompt,
-            tools=tools,
-            max_steps=max_steps,
-            output_mode="logger",
-            workspace_dir=workspace_root,
-            skill_manager=skill_manager,
-            enable_skills=True,
-            max_context_tokens=max_context_tokens
-        )
-
-        if memory_manager:
-            agent.memory_manager = memory_manager
-        
-        # Store agent for this session
+        """Initialize agent for a specific session"""
+        agent = self.initializer.initialize_agent(session_id=session_id)
         self.agents[session_id] = agent
-        logger.info(f"[AgentBridge] Agent created for session: {session_id}")
     
     def agent_reply(self, query: str, context: Context = None, 
                    on_event=None, clear_history: bool = False) -> Reply:
@@ -764,6 +296,9 @@ class AgentBridge:
             if not agent:
                 return Reply(ReplyType.ERROR, "Failed to initialize super agent")
             
+            # Create event handler for logging and channel communication
+            event_handler = AgentEventHandler(context=context, original_callback=on_event)
+            
             # Filter tools based on context
             original_tools = agent.tools
             filtered_tools = original_tools
@@ -786,16 +321,19 @@ class AgentBridge:
                             break
             
             try:
-                # Use agent's run_stream method
+                # Use agent's run_stream method with event handler
                 response = agent.run_stream(
                     user_message=query,
-                    on_event=on_event,
+                    on_event=event_handler.handle_event,
                     clear_history=clear_history
                 )
             finally:
                 # Restore original tools
                 if context and context.get("is_scheduled_task"):
                     agent.tools = original_tools
+                
+                # Log execution summary
+                event_handler.log_summary()
             
             # Check if there are files to send (from read tool)
             if hasattr(agent, 'stream_executor') and hasattr(agent.stream_executor, 'files_to_send'):
@@ -843,17 +381,18 @@ class AgentBridge:
                 reply.text_content = text_response  # Store accompanying text
             return reply
         
-        # For documents (PDF, Excel, Word, PPT), use FILE type
-        if file_type == "document":
+        # For all file types (document, video, audio), use FILE type
+        if file_type in ["document", "video", "audio"]:
             file_url = f"file://{file_path}"
-            logger.info(f"[AgentBridge] Sending document: {file_url}")
+            logger.info(f"[AgentBridge] Sending {file_type}: {file_url}")
             reply = Reply(ReplyType.FILE, file_url)
             reply.file_name = file_info.get("file_name", os.path.basename(file_path))
+            # Attach text message if present
+            if text_response:
+                reply.text_content = text_response
             return reply
         
-        # For other files (video, audio), we need channel-specific handling
-        # For now, return text with file info
-        # TODO: Implement video/audio sending when channel supports it
+        # For other unknown file types, return text with file info
         message = text_response or file_info.get("message", "文件已准备")
         message += f"\n\n[文件: {file_info.get('file_name', file_path)}]"
         return Reply(ReplyType.TEXT, message)
diff --git a/bridge/agent_event_handler.py b/bridge/agent_event_handler.py
new file mode 100644
index 0000000..17a0920
--- /dev/null
+++ b/bridge/agent_event_handler.py
@@ -0,0 +1,115 @@
+"""
+Agent Event Handler - Handles agent events and thinking process output
+"""
+
+from common.log import logger
+
+
+class AgentEventHandler:
+    """
+    Handles agent events and optionally sends intermediate messages to channel
+    """
+    
+    def __init__(self, context=None, original_callback=None):
+        """
+        Initialize event handler
+        
+        Args:
+            context: COW context (for accessing channel)
+            original_callback: Original event callback to chain
+        """
+        self.context = context
+        self.original_callback = original_callback
+        
+        # Get channel for sending intermediate messages
+        self.channel = None
+        if context:
+            self.channel = context.kwargs.get("channel") if hasattr(context, "kwargs") else None
+        
+        # Track current thinking for channel output
+        self.current_thinking = ""
+        self.turn_number = 0
+    
+    def handle_event(self, event):
+        """
+        Main event handler
+        
+        Args:
+            event: Event dict with type and data
+        """
+        event_type = event.get("type")
+        data = event.get("data", {})
+        
+        # Dispatch to specific handlers
+        if event_type == "turn_start":
+            self._handle_turn_start(data)
+        elif event_type == "message_update":
+            self._handle_message_update(data)
+        elif event_type == "message_end":
+            self._handle_message_end(data)
+        elif event_type == "tool_execution_start":
+            self._handle_tool_execution_start(data)
+        elif event_type == "tool_execution_end":
+            self._handle_tool_execution_end(data)
+        
+        # Call original callback if provided
+        if self.original_callback:
+            self.original_callback(event)
+    
+    def _handle_turn_start(self, data):
+        """Handle turn start event"""
+        self.turn_number = data.get("turn", 0)
+        self.has_tool_calls_in_turn = False
+        self.current_thinking = ""
+    
+    def _handle_message_update(self, data):
+        """Handle message update event (streaming text)"""
+        delta = data.get("delta", "")
+        self.current_thinking += delta
+    
+    def _handle_message_end(self, data):
+        """Handle message end event"""
+        tool_calls = data.get("tool_calls", [])
+        
+        # Only send thinking process if followed by tool calls
+        if tool_calls:
+            if self.current_thinking.strip():
+                logger.debug(f"💭 {self.current_thinking.strip()[:200]}{'...' if len(self.current_thinking) > 200 else ''}")
+                # Send thinking process to channel
+                self._send_to_channel(f"{self.current_thinking.strip()}")
+        else:
+            # No tool calls = final response (logged at agent_stream level)
+            if self.current_thinking.strip():
+                logger.debug(f"💬 {self.current_thinking.strip()[:200]}{'...' if len(self.current_thinking) > 200 else ''}")
+        
+        self.current_thinking = ""
+    
+    def _handle_tool_execution_start(self, data):
+        """Handle tool execution start event - logged by agent_stream.py"""
+        pass
+    
+    def _handle_tool_execution_end(self, data):
+        """Handle tool execution end event - logged by agent_stream.py"""
+        pass
+    
+    def _send_to_channel(self, message):
+        """
+        Try to send message to channel
+        
+        Args:
+            message: Message to send
+        """
+        if self.channel:
+            try:
+                from bridge.reply import Reply, ReplyType
+                # Create a Reply object for the message
+                reply = Reply(ReplyType.TEXT, message)
+                self.channel._send(reply, self.context)
+            except Exception as e:
+                logger.debug(f"[AgentEventHandler] Failed to send to channel: {e}")
+    
+    def log_summary(self):
+        """Log execution summary - simplified"""
+        # Summary removed as per user request
+        # Real-time logging during execution is sufficient
+        pass
diff --git a/bridge/agent_initializer.py b/bridge/agent_initializer.py
new file mode 100644
index 0000000..27739b5
--- /dev/null
+++ b/bridge/agent_initializer.py
@@ -0,0 +1,375 @@
+"""
+Agent Initializer - Handles agent initialization logic
+"""
+
+import os
+import asyncio
+import datetime
+import time
+from typing import Optional, List
+
+from agent.protocol import Agent
+from agent.tools import ToolManager
+from common.log import logger
+
+
+class AgentInitializer:
+    """
+    Handles agent initialization including:
+    - Workspace setup
+    - Memory system initialization  
+    - Tool loading
+    - System prompt building
+    """
+    
+    def __init__(self, bridge, agent_bridge):
+        """
+        Initialize agent initializer
+        
+        Args:
+            bridge: COW bridge instance
+            agent_bridge: AgentBridge instance (for create_agent method)
+        """
+        self.bridge = bridge
+        self.agent_bridge = agent_bridge
+    
+    def initialize_agent(self, session_id: Optional[str] = None) -> Agent:
+        """
+        Initialize agent for a session
+        
+        Args:
+            session_id: Session ID (None for default agent)
+        
+        Returns:
+            Initialized agent instance
+        """
+        from config import conf
+        
+        # Get workspace from config
+        workspace_root = os.path.expanduser(conf().get("agent_workspace", "~/cow"))
+        
+        # Migrate API keys
+        self._migrate_config_to_env(workspace_root)
+        
+        # Load environment variables
+        self._load_env_file()
+        
+        # Initialize workspace
+        from agent.prompt import ensure_workspace, load_context_files, PromptBuilder
+        workspace_files = ensure_workspace(workspace_root, create_templates=True)
+        
+        if session_id is None:
+            logger.info(f"[AgentInitializer] Workspace initialized at: {workspace_root}")
+        
+        # Setup memory system
+        memory_manager, memory_tools = self._setup_memory_system(workspace_root, session_id)
+        
+        # Load tools
+        tools = self._load_tools(workspace_root, memory_manager, memory_tools, session_id)
+        
+        # Initialize scheduler if needed
+        self._initialize_scheduler(tools, session_id)
+        
+        # Load context files
+        context_files = load_context_files(workspace_root)
+        
+        # Initialize skill manager
+        skill_manager = self._initialize_skill_manager(workspace_root, session_id)
+        
+        # Check if first conversation
+        from agent.prompt.workspace import is_first_conversation, mark_conversation_started
+        is_first = is_first_conversation(workspace_root)
+        
+        # Build system prompt
+        prompt_builder = PromptBuilder(workspace_dir=workspace_root, language="zh")
+        runtime_info = self._get_runtime_info(workspace_root)
+        
+        system_prompt = prompt_builder.build(
+            tools=tools,
+            context_files=context_files,
+            skill_manager=skill_manager,
+            memory_manager=memory_manager,
+            runtime_info=runtime_info,
+            is_first_conversation=is_first
+        )
+        
+        if is_first:
+            mark_conversation_started(workspace_root)
+        
+        # Get cost control parameters
+        from config import conf
+        max_steps = conf().get("agent_max_steps", 20)
+        max_context_tokens = conf().get("agent_max_context_tokens", 50000)
+        
+        # Create agent
+        agent = self.agent_bridge.create_agent(
+            system_prompt=system_prompt,
+            tools=tools,
+            max_steps=max_steps,
+            output_mode="logger",
+            workspace_dir=workspace_root,
+            skill_manager=skill_manager,
+            enable_skills=True,
+            max_context_tokens=max_context_tokens
+        )
+        
+        # Attach memory manager
+        if memory_manager:
+            agent.memory_manager = memory_manager
+        
+        return agent
+    
+    def _load_env_file(self):
+        """Load environment variables from .env file"""
+        env_file = os.path.expanduser("~/.cow/.env")
+        if os.path.exists(env_file):
+            try:
+                from dotenv import load_dotenv
+                load_dotenv(env_file, override=True)
+            except ImportError:
+                logger.warning("[AgentInitializer] python-dotenv not installed")
+            except Exception as e:
+                logger.warning(f"[AgentInitializer] Failed to load .env file: {e}")
+    
+    def _setup_memory_system(self, workspace_root: str, session_id: Optional[str] = None):
+        """
+        Setup memory system
+        
+        Returns:
+            (memory_manager, memory_tools) tuple
+        """
+        memory_manager = None
+        memory_tools = []
+        
+        try:
+            from agent.memory import MemoryManager, MemoryConfig, create_embedding_provider
+            from agent.tools import MemorySearchTool, MemoryGetTool
+            from config import conf
+            
+            # Get OpenAI config
+            openai_api_key = conf().get("open_ai_api_key", "")
+            openai_api_base = conf().get("open_ai_api_base", "")
+            
+            # Initialize embedding provider
+            embedding_provider = None
+            if openai_api_key and openai_api_key not in ["", "YOUR API KEY", "YOUR_API_KEY"]:
+                try:
+                    embedding_provider = create_embedding_provider(
+                        provider="openai",
+                        model="text-embedding-3-small",
+                        api_key=openai_api_key,
+                        api_base=openai_api_base or "https://api.openai.com/v1"
+                    )
+                    if session_id is None:
+                        logger.info("[AgentInitializer] OpenAI embedding initialized")
+                except Exception as e:
+                    logger.warning(f"[AgentInitializer] OpenAI embedding failed: {e}")
+            
+            # Create memory manager
+            memory_config = MemoryConfig(workspace_root=workspace_root)
+            memory_manager = MemoryManager(memory_config, embedding_provider=embedding_provider)
+            
+            # Sync memory
+            self._sync_memory(memory_manager, session_id)
+            
+            # Create memory tools
+            memory_tools = [
+                MemorySearchTool(memory_manager),
+                MemoryGetTool(memory_manager)
+            ]
+            
+            if session_id is None:
+                logger.info("[AgentInitializer] Memory system initialized")
+        
+        except Exception as e:
+            logger.warning(f"[AgentInitializer] Memory system not available: {e}")
+        
+        return memory_manager, memory_tools
+    
+    def _sync_memory(self, memory_manager, session_id: Optional[str] = None):
+        """Sync memory database"""
+        try:
+            loop = asyncio.get_event_loop()
+            if loop.is_closed():
+                raise RuntimeError("Event loop is closed")
+        except RuntimeError:
+            loop = asyncio.new_event_loop()
+            asyncio.set_event_loop(loop)
+        
+        try:
+            if loop.is_running():
+                asyncio.create_task(memory_manager.sync())
+            else:
+                loop.run_until_complete(memory_manager.sync())
+        except Exception as e:
+            logger.warning(f"[AgentInitializer] Memory sync failed: {e}")
+    
+    def _load_tools(self, workspace_root: str, memory_manager, memory_tools: List, session_id: Optional[str] = None):
+        """Load all tools"""
+        tool_manager = ToolManager()
+        tool_manager.load_tools()
+        
+        tools = []
+        file_config = {
+            "cwd": workspace_root,
+            "memory_manager": memory_manager
+        } if memory_manager else {"cwd": workspace_root}
+        
+        for tool_name in tool_manager.tool_classes.keys():
+            try:
+                # Special handling for EnvConfig tool
+                if tool_name == "env_config":
+                    from agent.tools import EnvConfig
+                    tool = EnvConfig({"agent_bridge": self.agent_bridge})
+                else:
+                    tool = tool_manager.create_tool(tool_name)
+                
+                if tool:
+                    # Apply workspace config to file operation tools
+                    if tool_name in ['read', 'write', 'edit', 'bash', 'grep', 'find', 'ls']:
+                        tool.config = file_config
+                        tool.cwd = file_config.get("cwd", getattr(tool, 'cwd', None))
+                        if 'memory_manager' in file_config:
+                            tool.memory_manager = file_config['memory_manager']
+                    tools.append(tool)
+            except Exception as e:
+                logger.warning(f"[AgentInitializer] Failed to load tool {tool_name}: {e}")
+        
+        # Add memory tools
+        if memory_tools:
+            tools.extend(memory_tools)
+            if session_id is None:
+                logger.info(f"[AgentInitializer] Added {len(memory_tools)} memory tools")
+        
+        if session_id is None:
+            logger.info(f"[AgentInitializer] Loaded {len(tools)} tools: {[t.name for t in tools]}")
+        
+        return tools
+    
+    def _initialize_scheduler(self, tools: List, session_id: Optional[str] = None):
+        """Initialize scheduler service if needed"""
+        if not self.agent_bridge.scheduler_initialized:
+            try:
+                from agent.tools.scheduler.integration import init_scheduler
+                if init_scheduler(self.agent_bridge):
+                    self.agent_bridge.scheduler_initialized = True
+                    if session_id is None:
+                        logger.info("[AgentInitializer] Scheduler service initialized")
+            except Exception as e:
+                logger.warning(f"[AgentInitializer] Failed to initialize scheduler: {e}")
+        
+        # Inject scheduler dependencies
+        if self.agent_bridge.scheduler_initialized:
+            try:
+                from agent.tools.scheduler.integration import get_task_store, get_scheduler_service
+                from agent.tools import SchedulerTool
+                from config import conf
+                
+                task_store = get_task_store()
+                scheduler_service = get_scheduler_service()
+                
+                for tool in tools:
+                    if isinstance(tool, SchedulerTool):
+                        tool.task_store = task_store
+                        tool.scheduler_service = scheduler_service
+                        if not tool.config:
+                            tool.config = {}
+                        tool.config["channel_type"] = conf().get("channel_type", "unknown")
+            except Exception as e:
+                logger.warning(f"[AgentInitializer] Failed to inject scheduler dependencies: {e}")
+    
+    def _initialize_skill_manager(self, workspace_root: str, session_id: Optional[str] = None):
+        """Initialize skill manager"""
+        try:
+            from agent.skills import SkillManager
+            skill_manager = SkillManager(workspace_dir=workspace_root)
+            return skill_manager
+        except Exception as e:
+            logger.warning(f"[AgentInitializer] Failed to initialize SkillManager: {e}")
+            return None
+    
+    def _get_runtime_info(self, workspace_root: str):
+        """Get runtime information"""
+        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"))
+        
+        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
+        }
+    
+    def _migrate_config_to_env(self, workspace_root: str):
+        """Migrate API keys from config.json to .env file"""
+        from config import conf
+        
+        key_mapping = {
+            "open_ai_api_key": "OPENAI_API_KEY",
+            "open_ai_api_base": "OPENAI_API_BASE",
+            "gemini_api_key": "GEMINI_API_KEY",
+            "claude_api_key": "CLAUDE_API_KEY",
+            "linkai_api_key": "LINKAI_API_KEY",
+        }
+        
+        env_file = os.path.expanduser("~/.cow/.env")
+        
+        # Read existing env vars
+        existing_env_vars = {}
+        if os.path.exists(env_file):
+            try:
+                with open(env_file, 'r', encoding='utf-8') as f:
+                    for line in f:
+                        line = line.strip()
+                        if line and not line.startswith('#') and '=' in line:
+                            key, _ = line.split('=', 1)
+                            existing_env_vars[key.strip()] = True
+            except Exception as e:
+                logger.warning(f"[AgentInitializer] Failed to read .env file: {e}")
+        
+        # Check which keys need migration
+        keys_to_migrate = {}
+        for config_key, env_key in key_mapping.items():
+            if env_key in existing_env_vars:
+                continue
+            value = conf().get(config_key, "")
+            if value and value.strip():
+                keys_to_migrate[env_key] = value.strip()
+        
+        # Write new keys
+        if keys_to_migrate:
+            try:
+                env_dir = os.path.dirname(env_file)
+                if not os.path.exists(env_dir):
+                    os.makedirs(env_dir, exist_ok=True)
+                if not os.path.exists(env_file):
+                    open(env_file, 'a').close()
+                
+                with open(env_file, 'a', encoding='utf-8') as f:
+                    f.write('\n# Auto-migrated from config.json\n')
+                    for key, value in keys_to_migrate.items():
+                        f.write(f'{key}={value}\n')
+                        os.environ[key] = value
+                
+                logger.info(f"[AgentInitializer] Migrated {len(keys_to_migrate)} API keys to .env: {list(keys_to_migrate.keys())}")
+            except Exception as e:
+                logger.warning(f"[AgentInitializer] Failed to migrate API keys: {e}")
diff --git a/channel/feishu/feishu_channel.py b/channel/feishu/feishu_channel.py
index 0197c93..6bf04ae 100644
--- a/channel/feishu/feishu_channel.py
+++ b/channel/feishu/feishu_channel.py
@@ -251,6 +251,14 @@ class FeiShuChanel(ChatChannel):
             msg_type = "image"
             content_key = "image_key"
         elif reply.type == ReplyType.FILE:
+            # 如果有附加的文本内容，先发送文本
+            if hasattr(reply, 'text_content') and reply.text_content:
+                logger.info(f"[FeiShu] Sending text before file: {reply.text_content[:50]}...")
+                text_reply = Reply(ReplyType.TEXT, reply.text_content)
+                self._send(text_reply, context)
+                import time
+                time.sleep(0.3)  # 短暂延迟，确保文本先到达
+            
             # 判断是否为视频文件
             file_path = reply.content
             if file_path.startswith("file://"):
@@ -259,20 +267,18 @@ class FeiShuChanel(ChatChannel):
             is_video = file_path.lower().endswith(('.mp4', '.avi', '.mov', '.wmv', '.flv'))
             
             if is_video:
-                # 视频使用 media 类型，需要上传并获取 file_key 和 duration
-                video_info = self._upload_video_url(reply.content, access_token)
-                if not video_info or not video_info.get('file_key'):
+                # 视频上传（包含duration信息）
+                upload_data = self._upload_video_url(reply.content, access_token)
+                if not upload_data or not upload_data.get('file_key'):
                     logger.warning("[FeiShu] upload video failed")
                     return
                 
-                # media 类型需要特殊的 content 格式
+                # 视频使用 media 类型（根据官方文档）
+                # 错误码 230055 说明：上传 mp4 时必须使用 msg_type="media"
                 msg_type = "media"
-                # 注意：media 类型的 content 不使用 content_key，而是完整的 JSON 对象
-                reply_content = {
-                    "file_key": video_info['file_key'],
-                    "duration": video_info.get('duration', 0)  # 视频时长（毫秒）
-                }
-                content_key = None  # media 类型不使用单一的 key
+                reply_content = upload_data  # 完整的上传响应数据（包含file_key和duration）
+                logger.info(f"[FeiShu] Sending video: file_key={upload_data.get('file_key')}, duration={upload_data.get('duration')}ms")
+                content_key = None  # 直接序列化整个对象
             else:
                 # 其他文件使用 file 类型
                 file_key = self._upload_file_url(reply.content, access_token)
@@ -286,12 +292,16 @@ class FeiShuChanel(ChatChannel):
         # Check if we can reply to an existing message (need msg_id)
         can_reply = is_group and msg and hasattr(msg, 'msg_id') and msg.msg_id
         
+        # Build content JSON
+        content_json = json.dumps(reply_content) if content_key is None else json.dumps({content_key: reply_content})
+        logger.debug(f"[FeiShu] Sending message: msg_type={msg_type}, content={content_json[:200]}")
+        
         if can_reply:
             # 群聊中回复已有消息
             url = f"https://open.feishu.cn/open-apis/im/v1/messages/{msg.msg_id}/reply"
             data = {
                 "msg_type": msg_type,
-                "content": json.dumps(reply_content) if content_key is None else json.dumps({content_key: reply_content})
+                "content": content_json
             }
             res = requests.post(url=url, headers=headers, json=data, timeout=(5, 10))
         else:
@@ -301,7 +311,7 @@ class FeiShuChanel(ChatChannel):
             data = {
                 "receive_id": context.get("receiver"),
                 "msg_type": msg_type,
-                "content": json.dumps(reply_content) if content_key is None else json.dumps({content_key: reply_content})
+                "content": content_json
             }
             res = requests.post(url=url, headers=headers, params=params, json=data, timeout=(5, 10))
         res = res.json()
@@ -471,9 +481,18 @@ class FeiShuChanel(ChatChannel):
             file_type = file_type_map.get(file_ext, 'mp4')
             
             upload_url = "https://open.feishu.cn/open-apis/im/v1/files"
-            data = {'file_type': file_type, 'file_name': file_name}
+            data = {
+                'file_type': file_type, 
+                'file_name': file_name
+            }
+            # Add duration only if available (required for video/audio)
+            if duration:
+                data['duration'] = duration  # Must be int, not string
+            
             headers = {'Authorization': f'Bearer {access_token}'}
             
+            logger.info(f"[FeiShu] Uploading video: file_name={file_name}, duration={duration}ms")
+            
             with open(local_path, "rb") as file:
                 upload_response = requests.post(
                     upload_url, 
@@ -486,11 +505,11 @@ class FeiShuChanel(ChatChannel):
                 
                 response_data = upload_response.json()
                 if response_data.get("code") == 0:
-                    file_key = response_data.get("data").get("file_key")
-                    return {
-                        'file_key': file_key,
-                        'duration': duration
-                    }
+                    # Add duration to the response data (API doesn't return it)
+                    upload_data = response_data.get("data")
+                    upload_data['duration'] = duration  # Add our calculated duration
+                    logger.info(f"[FeiShu] Upload complete: file_key={upload_data.get('file_key')}, duration={duration}ms")
+                    return upload_data
                 else:
                     logger.error(f"[FeiShu] upload video failed: {response_data}")
                     return None
diff --git a/channel/web/chat.html b/channel/web/chat.html
index 50e81fa..3134f3d 100644
--- a/channel/web/chat.html
+++ b/channel/web/chat.html
@@ -762,7 +762,7 @@
                     <i class="fas fa-bars"></i>
                 </button>
                 <img id="header-logo" src="assets/logo.jpg" alt="AI Assistant Logo">
-                <div id="chat-title">AI 助手</div>
+                <div id="chat-title" class="agent-title">AI 助手</div>
                 <a id="github-link" href="https://github.com/zhayujie/chatgpt-on-wechat" target="_blank" rel="noopener noreferrer">
                     <img id="github-icon" src="assets/github.png" alt="GitHub">
                 </a>
@@ -771,21 +771,21 @@
             <div id="messages">
                 <!-- 初始欢迎界面 -->
                 <div id="welcome-screen">
-                    <h1 id="welcome-title">AI 助手</h1>
-                    <p id="welcome-subtitle">我可以回答问题、提供信息或者帮助您完成各种任务</p>
+                    <h1 id="welcome-title" class="agent-title">AI 助手</h1>
+                    <p id="welcome-subtitle" class="agent-subtitle">我可以回答问题、提供信息或者帮助您完成各种任务</p>
                     
                     <div class="examples-container">
                         <div class="example-card">
-                            <div class="example-title">解释复杂概念</div>
-                            <div class="example-text">用简单的语言解释量子计算</div>
+                            <div class="example-title">📁 系统管理</div>
+                            <div class="example-text">帮我查看工作空间里有哪些文件</div>
                         </div>
                         <div class="example-card">
-                            <div class="example-title">创意写作</div>
-                            <div class="example-text">写一个关于未来城市的短篇故事</div>
+                            <div class="example-title">⏰ 智能任务</div>
+                            <div class="example-text">提醒我5分钟后查看服务器情况</div>
                         </div>
                         <div class="example-card">
-                            <div class="example-title">编程帮助</div>
-                            <div class="example-text">如何用Python写一个简单的网络爬虫</div>
+                            <div class="example-title">💻 编程助手</div>
+                            <div class="example-text">帮我编写一个Python爬虫脚本</div>
                         </div>
                         <!-- <div class="example-card">
                             <div class="example-title">生活建议</div>
@@ -830,6 +830,45 @@
         let sessionId = generateSessionId();
         console.log('Session ID:', sessionId);
 
+        // 获取配置并更新标题
+        let appConfig = {
+            use_agent: false,
+            title: "AI 助手",
+            subtitle: "我可以回答问题、提供信息或者帮助您完成各种任务"
+        };
+
+        // 从服务器获取配置
+        axios.get('/config')
+            .then(response => {
+                if (response.data.status === "success") {
+                    appConfig = response.data;
+                    updateTitle(appConfig.title, appConfig.subtitle);
+                }
+            })
+            .catch(error => {
+                console.error('Error loading config:', error);
+            });
+
+        // 更新标题的函数
+        function updateTitle(title, subtitle) {
+            // 更新顶部标题
+            const chatTitle = document.getElementById('chat-title');
+            if (chatTitle) {
+                chatTitle.textContent = title;
+            }
+
+            // 更新欢迎屏幕标题
+            const welcomeTitle = document.getElementById('welcome-title');
+            if (welcomeTitle) {
+                welcomeTitle.textContent = title;
+            }
+
+            const welcomeSubtitle = document.getElementById('welcome-subtitle');
+            if (welcomeSubtitle) {
+                welcomeSubtitle.textContent = subtitle;
+            }
+        }
+
         // 添加一个变量来跟踪输入法状态
         let isComposing = false;
 
@@ -1215,21 +1254,21 @@
             const newWelcomeScreen = document.createElement('div');
             newWelcomeScreen.id = 'welcome-screen';
             newWelcomeScreen.innerHTML = `
-                <h1 id="welcome-title">AI 助手</h1>
-                <p id="welcome-subtitle">我可以回答问题、提供信息或者帮助您完成各种任务</p>
+                <h1 id="welcome-title" class="agent-title">${appConfig.title}</h1>
+                <p id="welcome-subtitle" class="agent-subtitle">${appConfig.subtitle}</p>
                 
                 <div class="examples-container">
                     <div class="example-card">
-                        <div class="example-title">解释复杂概念</div>
-                        <div class="example-text">用简单的语言解释量子计算</div>
+                        <div class="example-title">📁 系统管理</div>
+                        <div class="example-text">帮我查看工作空间里有哪些文件</div>
                     </div>
                     <div class="example-card">
-                        <div class="example-title">创意写作</div>
-                        <div class="example-text">写一个关于未来城市的短篇故事</div>
+                        <div class="example-title">⏰ 智能任务</div>
+                        <div class="example-text">提醒我5分钟后查看服务器情况</div>
                     </div>
                     <div class="example-card">
-                        <div class="example-title">编程帮助</div>
-                        <div class="example-text">如何用Python写一个简单的网络爬虫</div>
+                        <div class="example-title">💻 编程助手</div>
+                        <div class="example-text">帮我编写一个Python爬虫脚本</div>
                     </div>
                 </div>
             `;
diff --git a/channel/web/web_channel.py b/channel/web/web_channel.py
index f2f075d..49b32ae 100644
--- a/channel/web/web_channel.py
+++ b/channel/web/web_channel.py
@@ -218,6 +218,7 @@ class WebChannel(ChatChannel):
             '/message', 'MessageHandler',
             '/poll', 'PollHandler',  # 添加轮询处理器
             '/chat', 'ChatHandler',
+            '/config', 'ConfigHandler',  # 添加配置处理器
             '/assets/(.*)', 'AssetsHandler',  # 匹配 /assets/任何路径
         )
         app = web.application(urls, globals(), autoreload=False)
@@ -262,6 +263,30 @@ class ChatHandler:
             return f.read()
 
 
+class ConfigHandler:
+    def GET(self):
+        """返回前端需要的配置信息"""
+        try:
+            use_agent = conf().get("agent", False)
+            
+            if use_agent:
+                title = "CowAgent"
+                subtitle = "我可以帮你解答问题、管理计算机、创造和执行技能，并通过长期记忆不断成长"
+            else:
+                title = "AI 助手"
+                subtitle = "我可以回答问题、提供信息或者帮助您完成各种任务"
+            
+            return json.dumps({
+                "status": "success",
+                "use_agent": use_agent,
+                "title": title,
+                "subtitle": subtitle
+            })
+        except Exception as e:
+            logger.error(f"Error getting config: {e}")
+            return json.dumps({"status": "error", "message": str(e)})
+
+
 class AssetsHandler:
     def GET(self, file_path):  # 修改默认参数
         try:
diff --git a/config-template.json b/config-template.json
index 88731e7..1d2f083 100644
--- a/config-template.json
+++ b/config-template.json
@@ -1,11 +1,11 @@
 {
   "channel_type": "web",
   "model": "claude-sonnet-4-5",
-  "open_ai_api_key": "YOUR API KEY",
+  "open_ai_api_key": "",
   "open_ai_api_base": "https://api.openai.com/v1",
-  "claude_api_key": "YOUR API KEY",
+  "claude_api_key": "",
   "claude_api_base": "https://api.anthropic.com/v1",
-  "gemini_api_key": "YOUR API KEY",
+  "gemini_api_key": "",
   "gemini_api_base": "https://generativelanguage.googleapis.com",
   "voice_to_text": "openai",
   "text_to_voice": "openai",
@@ -13,7 +13,7 @@
   "speech_recognition": true,
   "group_speech_recognition": false,
   "use_linkai": false,
-  "linkai_api_key": "YOUR API KEY",
+  "linkai_api_key": "",
   "linkai_app_code": "",
   "feishu_bot_name": "CowAgent",
   "feishu_app_id": "",
@@ -22,6 +22,6 @@
   "dingtalk_client_secret":"",
   "agent": true,
   "agent_max_context_tokens": 40000,
-  "agent_max_context_turns": 30,
+  "agent_max_context_turns": 20,
   "agent_max_steps": 15
 }
diff --git a/docs/agent.md b/docs/agent.md
new file mode 100644
index 0000000..c7e38d1
--- /dev/null
+++ b/docs/agent.md
@@ -0,0 +1,123 @@
+# CowAgent介绍
+
+## 概述
+
+Cow项目从简单的聊天机器人全面升级为超级智能助理 **CowAgent**，能够主动规思考和规划任务、拥有长期记忆、操作计算机和外部资源、创造和执行Skill，真正理解你并和你一起成长。CowAgent能够长期运行在个人电脑或服务器中，通过飞书、钉钉、企业微信、网页等多种方式进行交互。核心能力如下：
+
+
+- **复杂任务规划**：能够理解复杂任务并自主规划执行，持续思考和调用工具直到完成目标，支持多轮推理和上下文理解
+- **工具系统**：内置 10+ 种工具，包括文件操作、bash终端、浏览器、文件发送、定时任务、记忆管理等
+- **长期记忆**：持久化记忆自动保存到本地，通过向量数据库实现智能检索，分为核心记忆、每日记忆、用户记忆三个层次
+- **Skill系统**：可无限扩展的技能系统，内置技能创造器、网络搜索、图像识别等技能，可通过自然语言
+- **多渠道和多模型支持**：支持在Web、飞书、钉钉、企微等多渠道与Agent交互，兼容 OpenAI、Claude、Gemini等多种主流模型
+- **安全和成本**：通过秘钥管理工具、提示词控制、系统权限等手段控制Agent的访问权限；通过
+
+
+## 核心功能
+
+### 1. 长期记忆
+
+> 记忆系统让 Agent 能够长期记住重要信息。Agent 会在用户分享偏好、决策、事实等重要信息时主动存储，也会在对话达到一定长度时自动提取摘要。记忆分为核心记忆、天级记忆，支持语义搜索和向量检索的混合检索模式。
+
+
+第一次启动Agent会主动向用户获取询问关键信息，并记录至工作空间 (默认为 ~/cow) 中的智能体设定、用户身份、记忆文件中：
+
+<img width="600" src="https://cdn.link-ai.tech/doc/20260202171324.png">
+
+在后续的长期对话中，Agent会在需要的时候智能记录或检索记忆，并对自身设定、用户偏好、记忆文件等进行不断更新，总结和记录经验和教训，真正实现自主思考和不断成长：
+
+
+<img width="600" src="https://cdn.link-ai.tech/doc/20260202173951.png">
+
+
+
+### 2. 任务规划和工具调用
+
+工具是 Agent 与外部世界交互的桥梁。Agent会根据任务需求智能选择和调用工具，完成文件管理、命令执行、网页访问、定时任务等各类操作。所有工具调用对用户透明，Agent 会在执行时说明正在做什么，遇到敏感操作会征求确认。
+
+**主要工具：** 文件读写编辑、bash 终端、浏览器、文件发送、定时调度、记忆搜索、环境配置等。
+
+#### 1.1 终端和文件访问能力
+
+针对操作系统的终端和文件的访问能力，是最基础和核心的工具，其他很多工具或技能都是基于基础工具进行扩展。用户可通过手机端与Agent交互，操作个人电脑或服务器上的资源：
+
+<img width="700" src="https://cdn.link-ai.tech/doc/20260202181130.png">
+
+#### 1.2 编程能力
+
+基于编程能力和系统访问能力，Agent可以实现从信息搜索、图片等素材生成、编码、测试、部署、Nginx配置修改、发布的 Vibecoding 全流程，通过手机端简单的一句命令完成应用的快速demo：
+
+[TODO]
+
+
+
+#### 1.3 定时任务
+
+基于 scheduler 工具实现动态定时任务，支持 **一次性任务、固定时间间隔、Cron表达式** 三种形式，任务触发可选择**固定消息发送** 或 **Agent动态任务** 执行两种模式，有很高灵活性：
+
+
+<img width="700" src="https://cdn.link-ai.tech/doc/20260202195402.png">
+
+同时你也可以通过自然语言快速查看和管理已有的定时任务。
+
+
+#### 1.4 环境变量管理
+
+技能所需要的秘钥存储在环境变量文件中，由 `env_config` 工具进行管理，你可以通过对话的方式让
+
+
+
+### 3. 技能系统
+
+> 技能系统为Agent提供无限的扩展性，每个Skill由说明文件、运行脚本 (可选)、资源 (可选) 组成，描述如何完成特定类型的任务。通过Skill可以让Agent遵循说明完成复杂流程，调用各类工具或对接第三方系统等。
+
+- **内置技能：** 在项目的`skills`目录下，包含技能创造器、网络搜索、图像识别（openai-image-vision）、LinkAI智能体、网页抓取等。内置Skill根据依赖条件 (API Key、系统命令等) 自动判断是否启用。通过技能创造器可以快速创建自定义技能。
+
+- **自定义技能：** 由用户通过对话创建，存放在工作空间中 (`~/cow/skills/`)，基于自定义技能可以实现任何
+
+
+#### 3.1 创建技能
+
+通过 `skill-creator` 技能可以通过对话的方式快速创建技能。你可以在与Agent的写作中让他对将某个工作流程固化为技能，或者把任意接口文档和示例发送给Agent，让他直接完成对接：
+
+<img width="700" src="https://cdn.link-ai.tech/doc/20260202202247.png">
+
+
+#### 3.2 搜索和图像识别
+
+- **搜索技能：** 系统内置实现了 `bocha-search`(博查搜索)的Skill，依赖环境变量 `BOCHA_SEARCH_API_KEY`，可在[控制台]()进行创建，并发送给Agent完成配置
+- **图像识别技能：** 实现了 `openai-image-vision` 插件，可使用 gpt-4.1-mini、gpt-4.1 等图像识别模型。依赖秘钥 `OPENAI_API_KEY`，可通过config.json或env_config工具进行维护。
+
+<img width="700" src="https://cdn.link-ai.tech/doc/20260202213219.png">
+
+
+#### 3.3 三方知识库和插件
+
+`linkai-agent` 技能可以将 [LinkAI](https://link-ai.tech/) 上的所有智能体作为skill交给Agent使用，并实现多智能体决策的效果。配置文件在 `skills/linkai-agent/config.json`中，示例如下：
+
+```json
+{
+  "apps": [
+    {
+      "app_code": "G7z6vKwp",
+      "app_name": "LinkAI客服助手",
+      "app_description": "当用户需要了解LinkAI平台相关问题时才选择该助手，基于LinkAI知识库进行回答"
+    },
+    {
+      "app_code": "SFY5x7JR",
+      "app_name": "内容创作助手",
+      "app_description": "当用户需要创作图片或视频时才使用该助手，支持Nano Banana、Seedream、即梦、Veo、可灵等多种模型"
+    }
+  ]
+}
+```
+
+Agent可根据智能体的名称和描述进行决策，并通过 app_code 调用接口访问对应的应用/工作流，通过该技能，可以灵活访问LinkAI平台上的智能体、知识库、插件等能力，实现效果如下：
+
+
+
+
+注：需通过env_config配置 `LINKAI_API_KEY`，或在config.json中添加 linkai_api_key 配置。
+
+
+
diff --git a/skills/openai-image-vision/scripts/vision.sh b/skills/openai-image-vision/scripts/vision.sh
index 65008c4..c8294a1 100755
--- a/skills/openai-image-vision/scripts/vision.sh
+++ b/skills/openai-image-vision/scripts/vision.sh
@@ -80,7 +80,7 @@ else
         # Use sips (macOS) or convert (ImageMagick) to compress
         if command -v sips &> /dev/null; then
             # macOS: resize to max 800px on longest side
-            sips -Z 800 "$image_input" --out "$temp_compressed" &> /dev/null
+            $(command -v sips) -Z 800 "$image_input" --out "$temp_compressed" &> /dev/null
             if [ $? -eq 0 ]; then
                 image_to_encode="$temp_compressed"
                 >&2 echo "[vision.sh] Compressed large image ($(($file_size / 1024))KB) to avoid parameter limit"
@@ -123,7 +123,8 @@ else
     # Encode image to base64
     if command -v base64 &> /dev/null; then
         # macOS and most Linux systems
-        base64_image=$(base64 -i "$image_to_encode" 2>/dev/null || base64 "$image_to_encode" 2>/dev/null)
+        base64_cmd=$(command -v base64)
+        base64_image=$($base64_cmd -i "$image_to_encode" 2>/dev/null || $base64_cmd "$image_to_encode" 2>/dev/null)
     else
         echo '{"error": "base64 command not found", "help": "Please install base64 utility"}'
         # Clean up temp file if exists
@@ -171,7 +172,8 @@ EOF
 fi
 
 # Call OpenAI API
-response=$(curl -sS --max-time 60 \
+curl_cmd=$(command -v curl)
+response=$($curl_cmd -sS --max-time 60 \
     -X POST \
     -H "Authorization: Bearer $OPENAI_API_KEY" \
     -H "Content-Type: application/json" \