feat: 添加时区设置功能，默认时区改为 CST-8

- 新增 set_timezone LLM 工具，支持通过对话设置时区 - 新增 set_timezone / timezone_show CLI 命令 - 默认时区从 PST 改为 CST-8（中国标准时间 UTC+8） - 支持 POSIX 格式和 18 个城市名映射（Asia/Shanghai 等） - 时区通过 NVS 持久化存储（system_config namespace） - config_show 中显示当前时区配置 - 更新 changelog.md 和 taolun.md 文档
使用中文提交内容
2026-04-01 00:50:41 +08:00 · 2026-03-31 21:34:59 +08:00 · 2026-03-31 19:37:15 +08:00
32 changed files with 1476 additions and 409 deletions
--- a/README.md
+++ b/README.md
@@ -31,7 +31,7 @@ MimiClaw turns a tiny ESP32-S3 board into a personal AI assistant. Plug it into

 ![](assets/mimiclaw.png)

-You send a message on Telegram. The ESP32-S3 picks it up over WiFi, feeds it into an agent loop — the LLM thinks, calls tools, reads memory — and sends the reply back. Supports both **Anthropic (Claude)** and **OpenAI (GPT)** as providers, switchable at runtime. Everything runs on a single $5 chip with all your data stored locally on flash.
+You send a message on Telegram. The ESP32-S3 picks it up over WiFi, feeds it into an agent loop — the LLM thinks, calls tools, reads memory — and sends the reply back. Supports **Anthropic (Claude)**, **OpenAI (GPT)**, **SiliconFlow** (Chinese LLM providers), and **Volcengine** (ByteDance Doubao models) as providers, switchable at runtime. Everything runs on a single $5 chip with all your data stored locally on flash.

 ## Quick Start

@@ -40,7 +40,7 @@ You send a message on Telegram. The ESP32-S3 picks it up over WiFi, feeds it int
 - An **ESP32-S3 dev board** with 16 MB flash and 8 MB PSRAM (e.g. Xiaozhi AI board, ~$10)
 - A **USB Type-C cable**
 - A **Telegram bot token** — talk to [@BotFather](https://t.me/BotFather) on Telegram to create one
- An **Anthropic API key** — from [console.anthropic.com](https://console.anthropic.com), or an **OpenAI API key** — from [platform.openai.com](https://platform.openai.com)
+- An **Anthropic API key** — from [console.anthropic.com](https://console.anthropic.com), or an **OpenAI API key** — from [platform.openai.com](https://platform.openai.com), or a **SiliconFlow API key** — from [siliconflow.cn](https://siliconflow.cn), or a **Volcengine API key** — from [volcengine.com](https://volcengine.com)

 ### Install

@@ -128,11 +128,19 @@ Edit `main/mimi_secrets.h`:
 #define MIMI_SECRET_WIFI_PASS       "YourWiFiPassword"
 #define MIMI_SECRET_TG_TOKEN        "123456:ABC-DEF1234ghIkl-zyx57W2v1u123ew11"
 #define MIMI_SECRET_API_KEY         "sk-ant-api03-xxxxx"
-#define MIMI_SECRET_MODEL_PROVIDER  "anthropic"     // "anthropic" or "openai"
+#define MIMI_SECRET_MODEL_PROVIDER  "anthropic"     // "anthropic", "openai", "siliconflow", or "volcengine"
 #define MIMI_SECRET_SEARCH_KEY      ""              // optional: Brave Search API key
 #define MIMI_SECRET_TAVILY_KEY      ""              // optional: Tavily API key (preferred)
 #define MIMI_SECRET_PROXY_HOST      ""              // optional: e.g. "10.0.0.1"
 #define MIMI_SECRET_PROXY_PORT      ""              // optional: e.g. "7897"
+
+/* Optional: SiliconFlow API (OpenAI-compatible) */
+#define MIMI_SECRET_SILICONFLOW_API_KEY   ""
+#define MIMI_SECRET_SILICONFLOW_BASE_URL  "https://api.siliconflow.cn/v1"
+
+/* Optional: Volcengine API (OpenAI-compatible, ByteDance Doubao models) */
+#define MIMI_SECRET_VOLCENGINE_API_KEY    ""
+#define MIMI_SECRET_VOLCENGINE_BASE_URL   "https://ark.cn-beijing.volces.com/api/v3"
 ```

 Then build and flash:
@@ -169,12 +177,16 @@ Connect via serial to configure or debug. **Config commands** let you change set
 mimi> wifi_set MySSID MyPassword   # change WiFi network
 mimi> set_tg_token 123456:ABC...   # change Telegram bot token
 mimi> set_api_key sk-ant-api03-... # change API key (Anthropic or OpenAI)
-mimi> set_model_provider openai    # switch provider (anthropic|openai)
+mimi> set_model_provider openai    # switch provider (anthropic|openai|siliconflow|volcengine)
 mimi> set_model gpt-4o             # change LLM model
 mimi> set_proxy 127.0.0.1 7897  # set HTTP proxy
 mimi> clear_proxy                  # remove proxy
 mimi> set_search_key BSA...        # set Brave Search API key
 mimi> set_tavily_key tvly-...      # set Tavily API key (preferred)
+mimi> set_siliconflow_key sk-...   # set SiliconFlow API key
+mimi> set_siliconflow_url https://api.siliconflow.cn/v1  # set SiliconFlow Base URL
+mimi> set_volcengine_key sk-...    # set Volcengine API key
+mimi> set_volcengine_url https://ark.cn-beijing.volces.com/api/v3  # set Volcengine Base URL
 mimi> config_show                  # show all config (masked)
 mimi> config_reset                 # clear NVS, revert to build-time defaults
 ```
@@ -250,7 +262,7 @@ MimiClaw stores everything as plain text files you can read and edit:

 ## Tools

-MimiClaw supports tool calling for both Anthropic and OpenAI — the LLM can call tools during a conversation and loop until the task is done (ReAct pattern).
+MimiClaw supports tool calling for all LLM providers — the LLM can call tools during a conversation and loop until the task is done (ReAct pattern). Supported providers include Anthropic (Claude), OpenAI (GPT), SiliconFlow, and Volcengine.

 | Tool | Description |
 |------|-------------|
@@ -280,7 +292,7 @@ This turns MimiClaw into a proactive assistant — write tasks to `HEARTBEAT.md`
 - **OTA updates** — flash new firmware over WiFi, no USB needed
 - **Dual-core** — network I/O and AI processing run on separate CPU cores
 - **HTTP proxy** — CONNECT tunnel support for restricted networks
- **Multi-provider** — supports both Anthropic (Claude) and OpenAI (GPT), switchable at runtime
+- **Multi-provider** — supports Anthropic (Claude), OpenAI (GPT), SiliconFlow, and Volcengine, switchable at runtime
 - **Cron scheduler** — the AI can schedule its own recurring and one-shot tasks, persisted across reboots
 - **Heartbeat** — periodically checks a task file and prompts the AI to act autonomously
 - **Tool use** — ReAct agent loop with tool calling for both providers
--- a/changelog.md
+++ b/changelog.md
@@ -1,229 +1,56 @@
-# 变更日志：增加国内大模型厂商接入
+# 变更日志

-## 版本信息
- **版本**：v1.1.0（计划）
- **日期**：2026-03-31
- **状态**：计划中
+## v1.1.0（计划中）

-## 功能概述
-为 MimiClaw 项目增加国内大模型厂商的接入支持，包括：
-1. **硅基流动** (SiliconFlow) - 提供免费模型和多种高性能大模型
-2. **火山方舟** (Volcengine Ark) - 字节跳动豆包模型系列
+### 新增
+- 国内大模型厂商接入支持（硅基流动、火山方舟）— 计划中
+- **时区设置功能**
+  - 默认时区改为 `CST-8`（中国标准时间 UTC+8）
+  - 新增 `set_timezone` CLI 命令（支持 POSIX 格式和城市名）
+  - 新增 `timezone_show` CLI 命令
+  - 新增 `set_timezone` LLM 工具（可通过对话设置时区）
+  - 时区通过 NVS 持久化存储（`system_config` namespace）
+  - 支持城市名映射（Asia/Shanghai → CST-8 等 18 个预设城市）
+  - `config_show` 中显示当前时区配置

-## 实施计划
+### 修复
+- ESP-IDF v6.0 编译适配
+  - 修复 flash 大小配置（2MB → 16MB）
+  - 修复 WiFi 断开原因码未定义问题（添加 `#ifdef` 保护）
+  - 修复 CMakeLists.txt 缺少 `ota/ota_manager.c`
+  - 修复 16 处头文件缺失问题：
+    - `cli/serial_cli.c` 添加 `llm/llm_provider.h`
+    - `llm/llm_provider.c` 添加 `esp_http_client.h`
+    - `bus/message_bus.c` 添加 `freertos/FreeRTOS.h`, `freertos/queue.h`
+    - `wifi/wifi_manager.c` 添加 `esp_event.h`, `freertos/FreeRTOS.h`, `freertos/task.h`, `freertos/event_groups.h`
+    - `ota/ota_manager.c` 添加 `esp_system.h`
+    - `channels/telegram/telegram_bot.c` 添加 `freertos/FreeRTOS.h`, `freertos/task.h`
+    - `tools/tool_registry.c` 添加 `<stdlib.h>`
+    - `proxy/http_proxy.c` 添加 `<sys/time.h>`
+    - `gateway/ws_server.c` 添加 `<stdint.h>`
+  - 验证 ESP-IDF v6.0 API 兼容性（esp_spiffs_info、esp_websocket_client_send_bin、esp_tls、console REPL 等均存在）

-### 阶段一：准备与设计（1-2天）
+### 文档
+- 新增 `docs/ESP-IDF-V6-MIGRATION.md` — ESP-IDF v6.0 迁移适配记录
+- 更新 `taolun.md` — 讨论记录整理

-#### 1.1 详细API调研
- [ ] 研究硅基流动API文档，确认：
-  - 具体的Base URL和端点
-  - 认证方式（API Key格式）
-  - 支持的模型列表和ID格式
-  - 工具调用兼容性
-  - 速率限制和配额
+---

- [ ] 研究火山方舟API文档，确认：
-  - 具体的Base URL和端点
-  - 认证方式（API Key格式）
-  - 支持的模型列表和ID格式
-  - 工具调用兼容性
-  - 速率限制和配额
+## v1.0.0

-#### 1.2 架构设计
- [ ] 设计提供商扩展机制
- [ ] 确定配置管理方案
- [ ] 设计命令行接口扩展
- [ ] 评估内存影响
-
-### 阶段二：核心实现（3-5天）
-
-#### 2.1 配置系统扩展
- [ ] 修改 `mimi_secrets.h.example` 添加新配置项：
-  ```c
-  /* 国内大模型厂商配置 */
-  #define MIMI_SECRET_SILICONFLOW_API_KEY   ""
-  #define MIMI_SECRET_SILICONFLOW_BASE_URL  "https://api.siliconflow.cn/v1"
-  #define MIMI_SECRET_VOLCENGINE_API_KEY    ""
-  #define MIMI_SECRET_VOLCENGINE_BASE_URL   "https://ark.cn-beijing.volces.com/api/v3"
-  ```
-
- [ ] 更新 `mimi_config.h` 添加相关默认值
-
-#### 2.2 LLM代理扩展
- [ ] 修改 `llm_proxy.c` 支持新的提供商：
-  - 添加 `provider_is_siliconflow()` 函数
-  - 添加 `provider_is_volcengine()` 函数
-  - 扩展 `llm_api_url()` 函数支持新提供商
-  - 扩展 `llm_api_host()` 函数支持新提供商
-  - 扩展 `llm_api_path()` 函数支持新提供商
-
- [ ] 添加Base URL配置支持：
-  ```c
-  static char s_siliconflow_base_url[256] = "https://api.siliconflow.cn/v1";
-  static char s_volcengine_base_url[256] = "https://ark.cn-beijing.volces.com/api/v3";
-  ```
-
- [ ] 修改HTTP请求头设置逻辑：
-  - 硅基流动：使用Bearer Token认证
-  - 火山方舟：使用Bearer Token认证（假设与OpenAI兼容）
-
- [ ] 添加模型名称转换逻辑（如果需要）
-
-#### 2.3 命令行界面扩展
- [ ] 在 `serial_cli.c` 添加新命令：
-  - `set_siliconflow_key <key>`：设置硅基流动API密钥
-  - `set_siliconflow_url <url>`：设置硅基流动Base URL
-  - `set_volcengine_key <key>`：设置火山方舟API密钥
-  - `set_volcengine_url <url>`：设置火山方舟Base URL
-
- [ ] 更新现有命令的帮助信息
- [ ] 更新 `config_show` 命令显示新配置
-
-#### 2.4 提供商切换机制
- [ ] 修改 `set_model_provider` 命令支持新提供商：
-  - 支持值：`anthropic`, `openai`, `siliconflow`, `volcengine`
-  
- [ ] 更新NVS存储键名：
-  - 可能需要扩展 `MIMI_NVS_KEY_PROVIDER` 支持更多值
-
-### 阶段三：测试与优化（2-3天）
-
-#### 3.1 功能测试
- [ ] 单元测试：
-  - 提供商检测函数测试
-  - API URL生成测试
-  - 请求头设置测试
-  
- [ ] 集成测试：
-  - 硅基流动API连接测试
-  - 火山方舟API连接测试
-  - 工具调用功能测试
-  - 提供商切换测试
-
-#### 3.2 性能优化
- [ ] 内存使用优化：
-  - 评估新增变量对内存的影响
-  - 优化字符串存储大小
-  
- [ ] 网络性能：
-  - 测试国内网络环境下的连接稳定性
-  - 优化超时设置
-
-#### 3.3 错误处理
- [ ] 添加详细的错误日志
- [ ] 处理API特定的错误响应
- [ ] 添加重试机制（如果需要）
-
-### 阶段四：文档与发布（1天）
-
-#### 4.1 文档更新
- [ ] 更新 `README.md` 添加新功能说明
- [ ] 更新 `mimi_secrets.h.example` 添加配置示例
- [ ] 创建国内大模型厂商配置指南
- [ ] 更新串口CLI命令文档
-
-#### 4.2 发布准备
- [ ] 代码审查
- [ ] 最终测试
- [ ] 创建发布标签
-
-## 技术细节
-
-### 提供商检测逻辑
-```c
-// 在 llm_proxy.c 中添加
-static bool provider_is_siliconflow(void) {
-    return strcmp(s_provider, "siliconflow") == 0;
-}
-
-static bool provider_is_volcengine(void) {
-    return strcmp(s_provider, "volcengine") == 0;
-}
-```
-
-### API URL 配置
-```c
-// 扩展 llm_api_url 函数
-static const char *llm_api_url(void) {
-    if (provider_is_openai()) {
-        return MIMI_OPENAI_API_URL;
-    } else if (provider_is_siliconflow()) {
-        return s_siliconflow_base_url;
-    } else if (provider_is_volcengine()) {
-        return s_volcengine_base_url;
-    } else {
-        return MIMI_LLM_API_URL; // Anthropic
-    }
-}
-```
-
-### 请求头设置
-```c
-// 扩展 HTTP 请求头设置
-if (provider_is_openai() || provider_is_siliconflow() || provider_is_volcengine()) {
-    // OpenAI兼容的Bearer Token认证
-    if (s_api_key[0]) {
-        char auth[LLM_API_KEY_MAX_LEN + 16];
-        snprintf(auth, sizeof(auth), "Bearer %s", s_api_key);
-        esp_http_client_set_header(client, "Authorization", auth);
-    }
-} else {
-    // Anthropic的x-api-key认证
-    esp_http_client_set_header(client, "x-api-key", s_api_key);
-    esp_http_client_set_header(client, "anthropic-version", MIMI_LLM_API_VERSION);
-}
-```
-
-## 风险评估与缓解
-
-### 风险1：API兼容性问题
- **风险**：国内厂商的API可能与OpenAI有细微差异
- **缓解**：详细测试，添加兼容性处理代码
-
-### 风险2：内存限制
- **风险**：新增配置可能超出ESP32-S3内存限制
- **缓解**：优化字符串存储，使用固定大小数组
-
-### 风险3：网络连接问题
- **风险**：国内网络环境可能影响API调用
- **缓解**：添加重试机制，优化超时设置
-
-### 风险4：认证安全
- **风险**：API密钥存储和传输安全
- **缓解**：使用现有的NVS加密存储，确保安全传输
-
-## 预期成果
-
-1. **功能完成**：支持硅基流动和火山方舟两个国内大模型厂商
-2. **配置灵活**：用户可以通过命令行或配置文件灵活配置
-3. **向后兼容**：不影响现有的Anthropic和OpenAI功能
-4. **文档完整**：提供完整的配置和使用文档
-
-## 时间估算
-
- **总时间**：7-11个工作日
- **阶段一**：1-2天
- **阶段二**：3-5天
- **阶段三**：2-3天
- **阶段四**：1天
-
-## 依赖项
-
-1. **外部依赖**：
-   - 硅基流动API访问权限
-   - 火山方舟API访问权限
-   - 稳定的网络连接
-
-2. **内部依赖**：
-   - 现有的LLM代理架构
-   - 配置管理系统
-   - 命令行界面系统
-
-## 成功标准
-
-1. 可以成功连接硅基流动API并获取响应
-2. 可以成功连接火山方舟API并获取响应
-3. 工具调用功能在两个新提供商上正常工作
-4. 提供商切换功能正常
-5. 内存使用在可接受范围内
-6. 所有现有功能保持正常
+### 功能
+- Telegram 机器人长轮询
+- Agent Loop（ReAct 工具调用，最多 10 轮迭代）
+- Claude API（Anthropic Messages API）
+- OpenAI API 支持
+- 工具注册 + web_search（Brave Search API）
+- 上下文构建器（系统提示 + 引导文件 + 记忆 + 工具指导）
+- 记忆存储（MEMORY.md + 每日笔记）
+- 会话管理（JSONL per chat_id，环形缓冲区历史）
+- WebSocket 网关（端口 18789，JSON 协议）
+- 串口 CLI（esp_console，调试/维护命令）
+- HTTP CONNECT 代理支持
+- OTA 更新
+- WiFi 管理器（构建时凭证，指数退避）
+- SPIFFS 存储
+- 构建时配置（`mimi_secrets.h`）+ 运行时 NVS 覆盖
--- a/docs/ARCHITECTURE.md
+++ b/docs/ARCHITECTURE.md
@@ -57,9 +57,17 @@ Telegram App (User)
         │  Anthropic Messages API (HTTPS)
         │  + Brave Search API (HTTPS)
         ▼
-   ┌───────────┐   ┌──────────────┐
-   │ Claude API │   │ Brave Search │
-   └───────────┘   └──────────────┘
+    ┌───────────┐   ┌──────────────┐   ┌──────────────┐
+    │ Claude API │   │ Brave Search │   │ Tavily Search│
+    └───────────┘   └──────────────┘   └──────────────┘
+          │
+    ┌───────────┐   ┌──────────────┐
+    │ OpenAI API │   │ SiliconFlow  │
+    └───────────┘   └──────────────┘
+          │
+    ┌───────────┐   ┌──────────────┐
+    │ Volcengine │   │ Feishu Bot   │
+    └───────────┘   └──────────────┘
 ```

 ---
@@ -106,15 +114,21 @@ main/
 │
 ├── wifi/
 │   ├── wifi_manager.h      WiFi STA lifecycle API
-│   └── wifi_manager.c      Event handler, exponential backoff
+│   └── wifi_manager.c      Event handler, exponential backoff (timer-based retry)
 │
-├── telegram/
-│   ├── telegram_bot.h      Bot init/start, send_message API
-│   └── telegram_bot.c      Long polling loop, JSON parsing, message splitting
+├── channels/
+│   ├── telegram/
+│   │   ├── telegram_bot.h  Bot init/start, send_message API
+│   │   └── telegram_bot.c  Long polling loop, JSON parsing, message splitting
+│   └── feishu/
+│       ├── feishu_bot.h    Feishu bot API
+│       └── feishu_bot.c    WebSocket event handling, message send/recv
 │
 ├── llm/
 │   ├── llm_proxy.h         llm_chat() + llm_chat_tools() API, tool_use types
-│   └── llm_proxy.c         Anthropic Messages API (non-streaming), tool_use parsing
+│   ├── llm_proxy.c         Multi-provider LLM (Anthropic + OpenAI-compatible)
+│   ├── llm_provider.h      Provider registry + configuration API
+│   └── llm_provider.c      Provider configs: anthropic, openai, siliconflow, volcengine
 │
 ├── agent/
 │   ├── agent_loop.h        Agent task init/start
@@ -125,8 +139,17 @@ main/
 ├── tools/
 │   ├── tool_registry.h     Tool definition struct, register/dispatch API
 │   ├── tool_registry.c     Tool registration, JSON schema builder, dispatch by name
-│   ├── tool_web_search.h   Web search tool API
-│   └── tool_web_search.c   Brave Search API via HTTPS (direct + proxy)
+│   ├── tool_web_search.h   Web search tool API (Tavily + Brave)
+│   ├── tool_web_search.c   Brave/Tavily Search API via HTTPS
+│   ├── tool_get_time.h     Time tool API
+│   ├── tool_get_time.c     HTTP Date header parsing for time sync
+│   ├── tool_cron.h         Cron tool API
+│   ├── tool_cron.c         Cron job management
+│   ├── tool_files.h        File tool API
+│   ├── tool_files.c        read/write/edit/list files on SPIFFS
+│   ├── tool_gpio.h         GPIO tool API
+│   ├── tool_gpio.c         GPIO read/write
+│   └── gpio_policy.c       GPIO pin allowlist policy
 │
 ├── memory/
 │   ├── memory_store.h      Long-term + daily memory API
@@ -140,12 +163,29 @@ main/
 │
 ├── proxy/
 │   ├── http_proxy.h        Proxy connection API
-│   └── http_proxy.c        HTTP CONNECT tunnel + TLS via esp_tls
+│   └── http_proxy.c        HTTP CONNECT tunnel + SOCKS5 tunnel + TLS
 │
 ├── cli/
 │   ├── serial_cli.h        CLI init API
 │   └── serial_cli.c        esp_console REPL with debug/maintenance commands
 │
+├── cron/
+│   ├── cron_service.h      Cron job API
+│   └── cron_service.c      Cron scheduler, job persistence, execution
+│
+├── heartbeat/
+│   ├── heartbeat.h         Heartbeat API
+│   └── heartbeat.c         Periodic heartbeat messages
+│
+├── onboard/
+│   ├── wifi_onboard.h      WiFi onboarding portal API
+│   ├── wifi_onboard.c      Captive portal + Soft AP + HTTP config page
+│   └── onboard_html.h      Embedded HTML/CSS/JS for setup page
+│
+├── skills/
+│   ├── skill_loader.h      Skill loader API
+│   └── skill_loader.c      Load skill files from SPIFFS
+│
 └── ota/
    ├── ota_manager.h       OTA update API
    └── ota_manager.c       esp_https_ota wrapper
@@ -158,9 +198,13 @@ main/
 | Task               | Core | Priority | Stack  | Description                          |
 |--------------------|------|----------|--------|--------------------------------------|
 | `tg_poll`          | 0    | 5        | 12 KB  | Telegram long polling (30s timeout)  |
-| `agent_loop`       | 1    | 6        | 12 KB  | Message processing + Claude API call |
-| `outbound`         | 0    | 5        | 8 KB   | Route responses to Telegram / WS     |
+| `feishu_ws`        | 0    | 5        | 12 KB  | Feishu WebSocket event handling      |
+| `agent_loop`       | 1    | 6        | 24 KB  | Message processing + LLM API call    |
+| `outbound`         | 0    | 5        | 12 KB  | Route responses to channels          |
 | `serial_cli`       | 0    | 3        | 4 KB   | USB serial console REPL              |
+| `onboard_dns`      | 0    | 5        | 4 KB   | DNS hijack for captive portal        |
+| `cron_check`       | 0    | 4        | 4 KB   | Cron job scheduler                   |
+| `heartbeat`        | 0    | 4        | 4 KB   | Periodic heartbeat                   |
 | httpd (internal)   | 0    | 5        | —      | WebSocket server (esp_http_server)   |
 | wifi_event (IDF)   | 0    | 8        | —      | WiFi event handling (ESP-IDF)        |

@@ -225,20 +269,66 @@ Session files are JSONL (one JSON object per line):

 ## Configuration

-All configuration is done exclusively through `mimi_secrets.h` at build time. There is no runtime configuration — changing any setting requires `idf.py fullclean && idf.py build`.
+Configuration uses a multi-layer priority system:

-| Define                       | Description                             |
-|------------------------------|-----------------------------------------|
-| `MIMI_SECRET_WIFI_SSID`     | WiFi SSID                               |
-| `MIMI_SECRET_WIFI_PASS`     | WiFi password                           |
-| `MIMI_SECRET_TG_TOKEN`      | Telegram Bot API token                  |
-| `MIMI_SECRET_API_KEY`       | Anthropic API key                       |
-| `MIMI_SECRET_MODEL`         | Model ID (default: claude-opus-4-6)     |
-| `MIMI_SECRET_PROXY_HOST`    | HTTP proxy hostname/IP (optional)       |
-| `MIMI_SECRET_PROXY_PORT`    | HTTP proxy port (optional)              |
-| `MIMI_SECRET_SEARCH_KEY`    | Brave Search API key (optional)         |
+### Build-time (`mimi_secrets.h`)
+Highest priority. Set in `mimi_secrets.h` (copy from `mimi_secrets.h.example`).

-NVS is still initialized (required by ESP-IDF WiFi internals) but is not used for application configuration.
+| Define                              | Description                                |
+|-------------------------------------|--------------------------------------------|
+| `MIMI_SECRET_WIFI_SSID`            | WiFi SSID                                  |
+| `MIMI_SECRET_WIFI_PASS`            | WiFi password                              |
+| `MIMI_SECRET_TG_TOKEN`             | Telegram Bot API token                     |
+| `MIMI_SECRET_FEISHU_APP_ID`        | Feishu App ID                              |
+| `MIMI_SECRET_FEISHU_APP_SECRET`    | Feishu App Secret                          |
+| `MIMI_SECRET_API_KEY`              | Generic LLM API key (fallback)             |
+| `MIMI_SECRET_MODEL`                | Model ID (default: claude-opus-4-5)        |
+| `MIMI_SECRET_MODEL_PROVIDER`       | LLM provider: anthropic/openai/siliconflow/volcengine |
+| `MIMI_SECRET_ANTHROPIC_API_KEY`    | Anthropic-specific API key                 |
+| `MIMI_SECRET_OPENAI_API_KEY`       | OpenAI-specific API key                    |
+| `MIMI_SECRET_SILICONFLOW_API_KEY`  | SiliconFlow (硅基流动) API key             |
+| `MIMI_SECRET_SILICONFLOW_BASE_URL` | SiliconFlow Base URL                       |
+| `MIMI_SECRET_VOLCENGINE_API_KEY`   | Volcengine (火山引擎) API key              |
+| `MIMI_SECRET_VOLCENGINE_BASE_URL`  | Volcengine Base URL                        |
+| `MIMI_SECRET_PROXY_HOST`           | HTTP proxy hostname/IP (optional)          |
+| `MIMI_SECRET_PROXY_PORT`           | HTTP proxy port (optional)                 |
+| `MIMI_SECRET_PROXY_TYPE`           | Proxy type: http/socks5                    |
+| `MIMI_SECRET_SEARCH_KEY`           | Brave Search API key (optional)            |
+| `MIMI_SECRET_TAVILY_KEY`           | Tavily Search API key (optional)           |
+
+### Runtime (NVS + Onboard Portal)
+Set via serial CLI or the onboard configuration portal (192.168.4.1).
+
+| CLI Command                        | Description                          |
+|------------------------------------|--------------------------------------|
+| `wifi_set <SSID> <Password>`       | Set WiFi credentials                 |
+| `set_tg_token <Token>`             | Set Telegram Bot token               |
+| `set_api_key <Key>`                | Set generic LLM API key              |
+| `set_model_provider <Provider>`    | Set provider: anthropic/openai/siliconflow/volcengine |
+| `set_model <Model>`                | Set model name                       |
+| `set_siliconflow_key <Key>`        | Set SiliconFlow-specific API key     |
+| `set_siliconflow_url <URL>`        | Set SiliconFlow Base URL             |
+| `set_volcengine_key <Key>`         | Set Volcengine-specific API key      |
+| `set_volcengine_url <URL>`         | Set Volcengine Base URL              |
+| `config_show`                      | Show current config (masked)         |
+| `config_reset`                     | Reset to build-time defaults         |
+
+### Priority Order (highest → lowest)
+1. NVS runtime config (CLI or onboard portal)
+2. Provider-specific NVS key (e.g. `siliconflow_api_key`)
+3. Provider-specific build-time config (e.g. `MIMI_SECRET_SILICONFLOW_API_KEY`)
+4. Generic build-time config (`MIMI_SECRET_API_KEY`, `MIMI_SECRET_MODEL_PROVIDER`)
+
+## Supported LLM Providers
+
+| Provider     | API Compatible | Default Endpoint                                      |
+|-------------|----------------|-------------------------------------------------------|
+| anthropic   | Anthropic      | https://api.anthropic.com/v1/messages                 |
+| openai      | OpenAI         | https://api.openai.com/v1/chat/completions            |
+| siliconflow | OpenAI         | https://api.siliconflow.cn/v1/chat/completions        |
+| volcengine  | OpenAI         | https://ark.cn-beijing.volces.com/api/v3/chat/completions |
+
+All OpenAI-compatible providers use Bearer token authentication and the same message format.

 ---

--- a/docs/ESP-IDF-V6-MIGRATION.md
+++ b/docs/ESP-IDF-V6-MIGRATION.md
@@ -0,0 +1,82 @@
+# ESP-IDF v6.0 编译适配记录
+
+> 日期：2026-03-31
+> 目标芯片：ESP32-S3
+> ESP-IDF 版本：v6.0
+> 问题：从旧版本迁移到 ESP-IDF v6.0 后编译失败，存在多处头文件缺失、配置错误、CMakeLists 遗漏
+
+---
+
+## 问题清单与修复
+
+### 1. Flash 大小配置错误
+
+**错误信息：**
+```
+Partitions tables occupies 16.0MB of flash which does not fit in configured flash size 2MB
+```
+
+**修复：** `sdkconfig` 中 flash 大小从 2MB 改为 16MB
+- `CONFIG_ESPTOOLPY_FLASHSIZE_2MB=y` → `CONFIG_ESPTOOLPY_FLASHSIZE_16MB=y`
+- `CONFIG_ESPTOOLPY_FLASHSIZE="2MB"` → `CONFIG_ESPTOOLPY_FLASHSIZE="16MB"`
+
+### 2. WiFi 断开原因码未定义
+
+**错误信息：**
+```
+error: 'WIFI_REASON_ASSOC_EXPIRE' undeclared
+```
+
+**修复：** `main/wifi/wifi_manager.c` — 为所有 reason code 添加 `#ifdef` 保护（ESP-IDF v6.0 移除了部分原因码）
+
+### 3. CMakeLists.txt 缺少源文件
+
+**修复：** `main/CMakeLists.txt`
+- 添加 `"ota/ota_manager.c"` 到 SRCS 列表
+
+### 4. 头文件缺失（共修复 16 处）
+
+| 文件 | 缺失头文件 | 使用符号 |
+|------|-----------|---------|
+| `main/cli/serial_cli.c` | `llm/llm_provider.h` | `llm_provider_set_api_key` |
+| `main/llm/llm_provider.c` | `esp_http_client.h` | `esp_http_client_set_header` |
+| `main/bus/message_bus.c` | `freertos/FreeRTOS.h`, `freertos/queue.h` | `xQueueCreate`, `QueueHandle_t` |
+| `main/wifi/wifi_manager.c` | `esp_event.h` | `esp_event_handler_instance_register` |
+| `main/wifi/wifi_manager.c` | `freertos/FreeRTOS.h`, `freertos/task.h`, `freertos/event_groups.h` | `xEventGroupCreate`, `vTaskDelay` |
+| `main/ota/ota_manager.c` | `esp_system.h` | `esp_restart` |
+| `main/channels/telegram/telegram_bot.c` | `freertos/FreeRTOS.h`, `freertos/task.h` | `xTaskCreatePinnedToCore`, `vTaskDelay` |
+| `main/channels/telegram/telegram_bot.c` | `esp_err.h` | `esp_err_to_name` |
+| `main/tools/tool_registry.c` | `<stdlib.h>` | `free()` |
+| `main/proxy/http_proxy.c` | `<sys/time.h>` | `struct timeval` |
+| `main/gateway/ws_server.c` | `<stdint.h>` | `uint8_t` |
+
+---
+
+## ESP-IDF v6.0 API 兼容性验证
+
+以下 API 在 v6.0 中**仍然可用**，无需修改：
+
+| API | 位置 | 状态 |
+|-----|------|------|
+| `esp_spiffs_info()` | `esp_spiffs.h` | ✅ 存在 |
+| `esp_websocket_client_send_bin()` | `esp_websocket_client.h` | ✅ 存在 |
+| `esp_tls_set_conn_sockfd()` | `esp_tls.h` | ✅ 存在 |
+| `esp_tls_set_conn_state()` | `esp_tls.h` | ✅ 存在 |
+| `esp_console_new_repl_uart()` | `esp_console.h` | ✅ 存在 |
+| `esp_console_new_repl_usb_serial_jtag()` | `esp_console.h` | ✅ 存在 |
+| `esp_console_new_repl_usb_cdc()` | `esp_console.h` | ✅ 存在 |
+| `esp_https_ota()` + `esp_https_ota_config_t` | `esp_https_ota.h` | ✅ 存在 |
+| `esp_wifi_set_config()` | `esp_wifi.h` | ✅ 存在 |
+
+---
+
+## 烧录说明
+
+ESP32-S3 烧录使用 **USB 口**（内置 USB Serial/JTAG 控制器）：
+
+```powershell
+idf.py -p COMx flash monitor
+```
+
+- 插 **USB 口**（标记为 `USB`），不是 UART 口
+- 如遇连接失败，按住 **BOOT** 键再插线进入下载模式
--- a/main/CMakeLists.txt
+++ b/main/CMakeLists.txt
@@ -6,6 +6,7 @@ idf_component_register(
        "channels/telegram/telegram_bot.c"
        "channels/feishu/feishu_bot.c"
        "llm/llm_proxy.c"
+        "llm/llm_provider.c"
        "agent/agent_loop.c"
        "agent/context_builder.c"
        "memory/memory_store.c"
@@ -19,15 +20,17 @@ idf_component_register(
        "tools/tool_cron.c"
        "tools/tool_web_search.c"
        "tools/tool_get_time.c"
+        "tools/tool_set_timezone.c"
        "tools/tool_files.c"
        "tools/tool_gpio.c"
        "tools/gpio_policy.c"
        "skills/skill_loader.c"
        "onboard/wifi_onboard.c"
+        "ota/ota_manager.c"
    INCLUDE_DIRS
        "."
    REQUIRES
        nvs_flash esp_wifi esp_netif esp_http_client esp_http_server
-        esp_https_ota esp_event json spiffs console vfs app_update esp-tls
+        esp_https_ota esp_event cjson spiffs console vfs app_update esp-tls
        esp_timer esp_websocket_client esp_driver_gpio
 )
--- a/main/agent/context_builder.c
+++ b/main/agent/context_builder.c
@@ -14,8 +14,12 @@ static size_t append_file(char *buf, size_t size, size_t offset, const char *pat
    FILE *f = fopen(path, "r");
    if (!f) return offset;

-    if (header && offset < size - 1) {
-        offset += snprintf(buf + offset, size - offset, "\n## %s\n\n", header);
+    if (offset >= size) return offset;
+
+    if (header) {
+        int ret = snprintf(buf + offset, size - offset, "\n## %s\n\n", header);
+        if (ret > 0) offset += (size_t)ret;
+        if (offset >= size) { offset = size - 1; buf[offset] = '\0'; fclose(f); return offset; }
    }

    size_t n = fread(buf + offset, 1, size - offset - 1, f);
@@ -79,23 +83,35 @@ esp_err_t context_build_system_prompt(char *buf, size_t size)
    /* Long-term memory */
    char mem_buf[4096];
    if (memory_read_long_term(mem_buf, sizeof(mem_buf)) == ESP_OK && mem_buf[0]) {
-        off += snprintf(buf + off, size - off, "\n## Long-term Memory\n\n%s\n", mem_buf);
+        if (off < size) {
+            int ret = snprintf(buf + off, size - off, "\n## Long-term Memory\n\n%s\n", mem_buf);
+            if (ret > 0) off += (size_t)ret;
+            if (off >= size) off = size - 1;
+        }
    }

    /* Recent daily notes (last 3 days) */
    char recent_buf[4096];
    if (memory_read_recent(recent_buf, sizeof(recent_buf), 3) == ESP_OK && recent_buf[0]) {
-        off += snprintf(buf + off, size - off, "\n## Recent Notes\n\n%s\n", recent_buf);
+        if (off < size) {
+            int ret = snprintf(buf + off, size - off, "\n## Recent Notes\n\n%s\n", recent_buf);
+            if (ret > 0) off += (size_t)ret;
+            if (off >= size) off = size - 1;
+        }
    }

    /* Skills */
    char skills_buf[2048];
    size_t skills_len = skill_loader_build_summary(skills_buf, sizeof(skills_buf));
    if (skills_len > 0) {
-        off += snprintf(buf + off, size - off,
-            "\n## Available Skills\n\n"
-            "Available skills (use read_file to load full instructions):\n%s\n",
-            skills_buf);
+        if (off < size) {
+            int ret = snprintf(buf + off, size - off,
+                "\n## Available Skills\n\n"
+                "Available skills (use read_file to load full instructions):\n%s\n",
+                skills_buf);
+            if (ret > 0) off += (size_t)ret;
+            if (off >= size) off = size - 1;
+        }
    }

    ESP_LOGI(TAG, "System prompt built: %d bytes", (int)off);
--- a/main/bus/message_bus.c
+++ b/main/bus/message_bus.c
@@ -1,6 +1,8 @@
 #include "message_bus.h"
 #include "mimi_config.h"
 #include "esp_log.h"
+#include "freertos/FreeRTOS.h"
+#include "freertos/queue.h"
 #include <string.h>

 static const char *TAG = "bus";
--- a/main/channels/feishu/feishu_bot.c
+++ b/main/channels/feishu/feishu_bot.c
@@ -583,6 +583,7 @@ static void feishu_ws_event_handler(void *arg, esp_event_base_t base, int32_t ev
    } else if (event_id == WEBSOCKET_EVENT_DISCONNECTED) {
        s_ws_connected = false;
        ESP_LOGW(TAG, "Feishu WS disconnected");
+        if (rx_buf) { free(rx_buf); rx_buf = NULL; rx_cap = 0; }
    } else if (event_id == WEBSOCKET_EVENT_DATA) {
        if (e->op_code != WS_TRANSPORT_OPCODES_BINARY) return;
        size_t need = e->payload_offset + e->data_len;
--- a/main/channels/telegram/telegram_bot.c
+++ b/main/channels/telegram/telegram_bot.c
@@ -7,11 +7,14 @@
 #include <stdlib.h>
 #include <stdbool.h>
 #include "esp_log.h"
+#include "esp_err.h"
 #include "esp_timer.h"
 #include "esp_http_client.h"
 #include "esp_crt_bundle.h"
 #include "nvs.h"
 #include "cJSON.h"
+#include "freertos/FreeRTOS.h"
+#include "freertos/task.h"

 static const char *TAG = "telegram";

--- a/main/cli/serial_cli.c
+++ b/main/cli/serial_cli.c
@@ -4,6 +4,7 @@
 #include "channels/telegram/telegram_bot.h"
 #include "channels/feishu/feishu_bot.h"
 #include "llm/llm_proxy.h"
+#include "llm/llm_provider.h"
 #include "memory/memory_store.h"
 #include "memory/session_mgr.h"
 #include "proxy/http_proxy.h"
@@ -16,6 +17,8 @@
 #include <string.h>
 #include <stdio.h>
 #include <ctype.h>
+#include <stdbool.h>
+#include <time.h>
 #include <dirent.h>
 #include "esp_log.h"
 #include "esp_console.h"
@@ -171,6 +174,80 @@ static int cmd_set_model_provider(int argc, char **argv)
    return 0;
 }

+/* --- set_siliconflow_key command --- */
+static struct {
+    struct arg_str *key;
+    struct arg_end *end;
+} siliconflow_key_args;
+
+static int cmd_set_siliconflow_key(int argc, char **argv)
+{
+    int nerrors = arg_parse(argc, argv, (void **)&siliconflow_key_args);
+    if (nerrors != 0) {
+        arg_print_errors(stderr, siliconflow_key_args.end, argv[0]);
+        return 1;
+    }
+    llm_set_api_key(siliconflow_key_args.key->sval[0]);
+    llm_provider_set_api_key("siliconflow", siliconflow_key_args.key->sval[0]);
+    printf("SiliconFlow API key saved.\n");
+    return 0;
+}
+
+/* --- set_siliconflow_url command --- */
+static struct {
+    struct arg_str *url;
+    struct arg_end *end;
+} siliconflow_url_args;
+
+static int cmd_set_siliconflow_url(int argc, char **argv)
+{
+    int nerrors = arg_parse(argc, argv, (void **)&siliconflow_url_args);
+    if (nerrors != 0) {
+        arg_print_errors(stderr, siliconflow_url_args.end, argv[0]);
+        return 1;
+    }
+    llm_set_base_url("siliconflow", siliconflow_url_args.url->sval[0]);
+    printf("SiliconFlow Base URL saved.\n");
+    return 0;
+}
+
+/* --- set_volcengine_key command --- */
+static struct {
+    struct arg_str *key;
+    struct arg_end *end;
+} volcengine_key_args;
+
+static int cmd_set_volcengine_key(int argc, char **argv)
+{
+    int nerrors = arg_parse(argc, argv, (void **)&volcengine_key_args);
+    if (nerrors != 0) {
+        arg_print_errors(stderr, volcengine_key_args.end, argv[0]);
+        return 1;
+    }
+    llm_set_api_key(volcengine_key_args.key->sval[0]);
+    llm_provider_set_api_key("volcengine", volcengine_key_args.key->sval[0]);
+    printf("Volcengine API key saved.\n");
+    return 0;
+}
+
+/* --- set_volcengine_url command --- */
+static struct {
+    struct arg_str *url;
+    struct arg_end *end;
+} volcengine_url_args;
+
+static int cmd_set_volcengine_url(int argc, char **argv)
+{
+    int nerrors = arg_parse(argc, argv, (void **)&volcengine_url_args);
+    if (nerrors != 0) {
+        arg_print_errors(stderr, volcengine_url_args.end, argv[0]);
+        return 1;
+    }
+    llm_set_base_url("volcengine", volcengine_url_args.url->sval[0]);
+    printf("Volcengine Base URL saved.\n");
+    return 0;
+}
+
 /* --- memory_read command --- */
 static int cmd_memory_read(int argc, char **argv)
 {
@@ -563,10 +640,27 @@ static int cmd_config_show(int argc, char **argv)
    print_config("API Key",    MIMI_NVS_LLM,    MIMI_NVS_KEY_API_KEY,  MIMI_SECRET_API_KEY,    true);
    print_config("Model",      MIMI_NVS_LLM,    MIMI_NVS_KEY_MODEL,    MIMI_SECRET_MODEL,      false);
    print_config("Provider",   MIMI_NVS_LLM,    MIMI_NVS_KEY_PROVIDER, MIMI_SECRET_MODEL_PROVIDER, false);
+    
+    /* Provider-specific configurations */
+    printf("  --- Provider-specific configs ---\n");
+    print_config("Anthropic Key", MIMI_NVS_LLM, MIMI_NVS_KEY_ANTHROPIC_API_KEY, "", true);
+    print_config("Anthropic URL", MIMI_NVS_LLM, MIMI_NVS_KEY_ANTHROPIC_BASE_URL, "", false);
+    print_config("OpenAI Key", MIMI_NVS_LLM, MIMI_NVS_KEY_OPENAI_API_KEY, "", true);
+    print_config("OpenAI URL", MIMI_NVS_LLM, MIMI_NVS_KEY_OPENAI_BASE_URL, "", false);
+    print_config("SiliconFlow Key", MIMI_NVS_LLM, MIMI_NVS_KEY_SILICONFLOW_API_KEY, "", true);
+    print_config("SiliconFlow URL", MIMI_NVS_LLM, MIMI_NVS_KEY_SILICONFLOW_BASE_URL, "", false);
+    print_config("Volcengine Key", MIMI_NVS_LLM, MIMI_NVS_KEY_VOLCENGINE_API_KEY, "", true);
+    print_config("Volcengine URL", MIMI_NVS_LLM, MIMI_NVS_KEY_VOLCENGINE_BASE_URL, "", false);
+    
    print_config("Proxy Host", MIMI_NVS_PROXY,  MIMI_NVS_KEY_PROXY_HOST, MIMI_SECRET_PROXY_HOST, false);
    print_config_u16("Proxy Port", MIMI_NVS_PROXY, MIMI_NVS_KEY_PROXY_PORT, MIMI_SECRET_PROXY_PORT);
    print_config("Search Key", MIMI_NVS_SEARCH, MIMI_NVS_KEY_API_KEY,  MIMI_SECRET_SEARCH_KEY, true);
    print_config("Tavily Key", MIMI_NVS_SEARCH, MIMI_NVS_KEY_TAVILY_KEY, MIMI_SECRET_TAVILY_KEY, true);
+    
+    /* System configs */
+    printf("  --- System configs ---\n");
+    print_config("Timezone", "system_config", MIMI_NVS_KEY_TIMEZONE, MIMI_TIMEZONE, false);
+    
    printf("=============================\n");
    return 0;
 }
@@ -589,6 +683,87 @@ static int cmd_config_reset(int argc, char **argv)
    return 0;
 }

+/* --- set_timezone command --- */
+static struct {
+    struct arg_str *tz;
+    struct arg_end *end;
+} timezone_args;
+
+static int cmd_set_timezone(int argc, char **argv)
+{
+    int nerrors = arg_parse(argc, argv, (void **)&timezone_args);
+    if (nerrors != 0) {
+        arg_print_errors(stderr, timezone_args.end, argv[0]);
+        return 1;
+    }
+
+    const char *tz_str = timezone_args.tz->sval[0];
+    nvs_handle_t nvs;
+    esp_err_t err = nvs_open("system_config", NVS_READWRITE, &nvs);
+    if (err != ESP_OK) {
+        printf("Failed to open NVS: %s\n", esp_err_to_name(err));
+        return 1;
+    }
+
+    err = nvs_set_str(nvs, MIMI_NVS_KEY_TIMEZONE, tz_str);
+    if (err != ESP_OK) {
+        printf("Failed to save timezone: %s\n", esp_err_to_name(err));
+        nvs_close(nvs);
+        return 1;
+    }
+
+    err = nvs_commit(nvs);
+    nvs_close(nvs);
+
+    if (err != ESP_OK) {
+        printf("Failed to commit NVS: %s\n", esp_err_to_name(err));
+        return 1;
+    }
+
+    setenv("TZ", tz_str, 1);
+    tzset();
+
+    time_t now = time(NULL);
+    struct tm tm_now;
+    localtime_r(&now, &tm_now);
+    char time_str[64];
+    strftime(time_str, sizeof(time_str), "%Y-%m-%d %H:%M:%S %Z", &tm_now);
+
+    printf("Timezone set to '%s'. Current time: %s. Restart to apply permanently.\n", tz_str, time_str);
+    return 0;
+}
+
+/* --- timezone_show command --- */
+static int cmd_timezone_show(int argc, char **argv)
+{
+    (void)argc;
+    (void)argv;
+
+    char nvs_val[64] = {0};
+    const char *source = "build";
+    const char *display = MIMI_TIMEZONE;
+
+    nvs_handle_t nvs;
+    if (nvs_open("system_config", NVS_READONLY, &nvs) == ESP_OK) {
+        size_t len = sizeof(nvs_val);
+        if (nvs_get_str(nvs, MIMI_NVS_KEY_TIMEZONE, nvs_val, &len) == ESP_OK && nvs_val[0]) {
+            source = "NVS";
+            display = nvs_val;
+        }
+        nvs_close(nvs);
+    }
+
+    printf("Current timezone: %s [%s]\n", display, source);
+
+    time_t now = time(NULL);
+    struct tm tm_now;
+    localtime_r(&now, &tm_now);
+    char time_str[64];
+    strftime(time_str, sizeof(time_str), "%Y-%m-%d %H:%M:%S %Z (%A)", &tm_now);
+    printf("Local time: %s\n", time_str);
+    return 0;
+}
+
 /* --- heartbeat_trigger command --- */
 static int cmd_heartbeat_trigger(int argc, char **argv)
 {
@@ -649,13 +824,22 @@ typedef struct {
    size_t output_size;
    esp_err_t err;
    SemaphoreHandle_t done;
+    bool timed_out;
 } web_search_task_ctx_t;

 static void web_search_task(void *arg)
 {
    web_search_task_ctx_t *task_ctx = (web_search_task_ctx_t *)arg;
    task_ctx->err = tool_web_search_execute(task_ctx->input_json, task_ctx->output, task_ctx->output_size);
-    xSemaphoreGive(task_ctx->done);
+    if (!task_ctx->timed_out) {
+        xSemaphoreGive(task_ctx->done);
+    } else {
+        /* Main thread timed out and freed ctx, so we must clean up ourselves */
+        free((void *)task_ctx->input_json);
+        free(task_ctx->output);
+        vSemaphoreDelete(task_ctx->done);
+        free(task_ctx);
+    }
    vTaskDelete(NULL);
 }

@@ -751,10 +935,8 @@ static int cmd_web_search(int argc, char **argv)

    if (xSemaphoreTake(ctx->done, pdMS_TO_TICKS(45000)) != pdTRUE) {
        printf("web_search status: timeout\n");
-        vSemaphoreDelete(ctx->done);
-        free(input_copy);
-        free(ctx);
-        free(output);
+        ctx->timed_out = true;
+        /* Task will clean up ctx, input_copy, output, and done on its own */
        return 1;
    }
    esp_err_t err = ctx->err;
@@ -887,7 +1069,7 @@ esp_err_t serial_cli_init(void)
    esp_console_cmd_register(&model_cmd);

    /* set_model_provider */
-    provider_args.provider = arg_str1(NULL, NULL, "<provider>", "Model provider (anthropic|openai)");
+    provider_args.provider = arg_str1(NULL, NULL, "<provider>", "Model provider (anthropic|openai|siliconflow|volcengine)");
    provider_args.end = arg_end(1);
    esp_console_cmd_t provider_cmd = {
        .command = "set_model_provider",
@@ -897,6 +1079,50 @@ esp_err_t serial_cli_init(void)
    };
    esp_console_cmd_register(&provider_cmd);

+    /* set_siliconflow_key */
+    siliconflow_key_args.key = arg_str1(NULL, NULL, "<key>", "SiliconFlow API key");
+    siliconflow_key_args.end = arg_end(1);
+    esp_console_cmd_t siliconflow_key_cmd = {
+        .command = "set_siliconflow_key",
+        .help = "Set SiliconFlow API key",
+        .func = &cmd_set_siliconflow_key,
+        .argtable = &siliconflow_key_args,
+    };
+    esp_console_cmd_register(&siliconflow_key_cmd);
+
+    /* set_siliconflow_url */
+    siliconflow_url_args.url = arg_str1(NULL, NULL, "<url>", "SiliconFlow Base URL");
+    siliconflow_url_args.end = arg_end(1);
+    esp_console_cmd_t siliconflow_url_cmd = {
+        .command = "set_siliconflow_url",
+        .help = "Set SiliconFlow Base URL",
+        .func = &cmd_set_siliconflow_url,
+        .argtable = &siliconflow_url_args,
+    };
+    esp_console_cmd_register(&siliconflow_url_cmd);
+
+    /* set_volcengine_key */
+    volcengine_key_args.key = arg_str1(NULL, NULL, "<key>", "Volcengine API key");
+    volcengine_key_args.end = arg_end(1);
+    esp_console_cmd_t volcengine_key_cmd = {
+        .command = "set_volcengine_key",
+        .help = "Set Volcengine API key",
+        .func = &cmd_set_volcengine_key,
+        .argtable = &volcengine_key_args,
+    };
+    esp_console_cmd_register(&volcengine_key_cmd);
+
+    /* set_volcengine_url */
+    volcengine_url_args.url = arg_str1(NULL, NULL, "<url>", "Volcengine Base URL");
+    volcengine_url_args.end = arg_end(1);
+    esp_console_cmd_t volcengine_url_cmd = {
+        .command = "set_volcengine_url",
+        .help = "Set Volcengine Base URL",
+        .func = &cmd_set_volcengine_url,
+        .argtable = &volcengine_url_args,
+    };
+    esp_console_cmd_register(&volcengine_url_cmd);
+
    /* skill_list */
    esp_console_cmd_t skill_list_cmd = {
        .command = "skill_list",
@@ -1032,6 +1258,25 @@ esp_err_t serial_cli_init(void)
    };
    esp_console_cmd_register(&config_reset_cmd);

+    /* set_timezone */
+    timezone_args.tz = arg_str1(NULL, NULL, "<timezone>", "Timezone (e.g. CST-8, Asia/Shanghai)");
+    timezone_args.end = arg_end(1);
+    esp_console_cmd_t set_timezone_cmd = {
+        .command = "set_timezone",
+        .help = "Set system timezone (e.g. set_timezone CST-8)",
+        .func = &cmd_set_timezone,
+        .argtable = &timezone_args,
+    };
+    esp_console_cmd_register(&set_timezone_cmd);
+
+    /* timezone_show */
+    esp_console_cmd_t timezone_show_cmd = {
+        .command = "timezone_show",
+        .help = "Show current timezone and local time",
+        .func = &cmd_timezone_show,
+    };
+    esp_console_cmd_register(&timezone_show_cmd);
+
    /* heartbeat_trigger */
    esp_console_cmd_t heartbeat_cmd = {
        .command = "heartbeat_trigger",
--- a/main/cron/cron_service.c
+++ b/main/cron/cron_service.c
@@ -4,6 +4,7 @@

 #include <stdio.h>
 #include <stdlib.h>
+#include <stdbool.h>
 #include <string.h>
 #include <time.h>
 #include "freertos/FreeRTOS.h"
--- a/main/gateway/ws_server.c
+++ b/main/gateway/ws_server.c
@@ -4,6 +4,9 @@

 #include <string.h>
 #include <stdlib.h>
+#include <stdbool.h>
+#include <stdint.h>
+#include <stdio.h>
 #include "esp_log.h"
 #include "esp_http_server.h"
 #include "cJSON.h"
--- a/main/idf_component.yml
+++ b/main/idf_component.yml
@@ -2,7 +2,7 @@
 dependencies:
  ## Required IDF version
  idf:
-    version: '>=5.5.0,<5.6.0'
+    version: ">=5.5.0,<7.0.0"
  # # Put list of dependencies here
  # # For components maintained by Espressif:
  # component: "~1.0.0"
@@ -15,3 +15,4 @@ dependencies:
  #   # All dependencies of `main` are public by default.
  #   public: true
  espressif/esp_websocket_client: ^1.4.0
+  espressif/cjson: ">=1.0.0"
--- a/main/llm/llm_provider.c
+++ b/main/llm/llm_provider.c
@@ -0,0 +1,300 @@
+#include "llm_provider.h"
+#include "mimi_config.h"
+#include "nvs.h"
+
+#include <string.h>
+#include <stdlib.h>
+#include <stdio.h>
+#include <stdbool.h>
+#include "esp_log.h"
+#include "esp_err.h"
+#include "esp_http_client.h"
+
+static const char *TAG = "llm_provider";
+
+#define LLM_API_KEY_MAX_LEN 320
+
+/* Provider registry - all supported providers */
+const llm_provider_config_t llm_providers[] = {
+    {
+        .name = "anthropic",
+        .default_api_url = MIMI_LLM_API_URL,
+        .default_host = "api.anthropic.com",
+        .default_path = "/v1/messages",
+        .is_openai_compatible = false,
+    },
+    {
+        .name = "openai",
+        .default_api_url = MIMI_OPENAI_API_URL,
+        .default_host = "api.openai.com",
+        .default_path = "/v1/chat/completions",
+        .is_openai_compatible = true,
+    },
+    {
+        .name = "siliconflow",
+        .default_api_url = MIMI_SILICONFLOW_API_URL,
+        .default_host = "api.siliconflow.cn",
+        .default_path = "/v1/chat/completions",
+        .is_openai_compatible = true,
+    },
+    {
+        .name = "volcengine",
+        .default_api_url = MIMI_VOLCENGINE_API_URL,
+        .default_host = "ark.cn-beijing.volces.com",
+        .default_path = "/v1/chat/completions",
+        .is_openai_compatible = true,
+    },
+};
+
+const int llm_provider_count = sizeof(llm_providers) / sizeof(llm_providers[0]);
+
+/* Current provider state */
+static const llm_provider_config_t *s_current_provider = &llm_providers[0]; /* Default to anthropic */
+static char s_api_key[LLM_API_KEY_MAX_LEN] = {0};
+static char s_base_url[256] = {0};
+
+/* Helper function to get NVS key for provider API key */
+static const char *get_provider_api_key_nvs_key(const char *provider_name) {
+    if (strcmp(provider_name, "anthropic") == 0) return MIMI_NVS_KEY_ANTHROPIC_API_KEY;
+    if (strcmp(provider_name, "openai") == 0) return MIMI_NVS_KEY_OPENAI_API_KEY;
+    if (strcmp(provider_name, "siliconflow") == 0) return MIMI_NVS_KEY_SILICONFLOW_API_KEY;
+    if (strcmp(provider_name, "volcengine") == 0) return MIMI_NVS_KEY_VOLCENGINE_API_KEY;
+    return NULL;
+}
+
+/* Helper function to get NVS key for provider Base URL */
+static const char *get_provider_base_url_nvs_key(const char *provider_name) {
+    if (strcmp(provider_name, "anthropic") == 0) return MIMI_NVS_KEY_ANTHROPIC_BASE_URL;
+    if (strcmp(provider_name, "openai") == 0) return MIMI_NVS_KEY_OPENAI_BASE_URL;
+    if (strcmp(provider_name, "siliconflow") == 0) return MIMI_NVS_KEY_SILICONFLOW_BASE_URL;
+    if (strcmp(provider_name, "volcengine") == 0) return MIMI_NVS_KEY_VOLCENGINE_BASE_URL;
+    return NULL;
+}
+
+/* Find provider configuration by name */
+const llm_provider_config_t *llm_provider_find(const char *name) {
+    if (!name) return NULL;
+    
+    for (int i = 0; i < llm_provider_count; i++) {
+        if (strcmp(llm_providers[i].name, name) == 0) {
+            return &llm_providers[i];
+        }
+    }
+    return NULL;
+}
+
+/* Get current provider configuration */
+const llm_provider_config_t *llm_provider_current(void) {
+    return s_current_provider;
+}
+
+/* Set current provider by name */
+void llm_provider_set_current(const char *name) {
+    const llm_provider_config_t *provider = llm_provider_find(name);
+    if (provider) {
+        s_current_provider = provider;
+        /* Load provider-specific configuration */
+        llm_provider_init();
+        ESP_LOGI(TAG, "Current provider set to: %s", name);
+    } else {
+        ESP_LOGW(TAG, "Unknown provider: %s", name);
+    }
+}
+
+/* Get current provider name */
+const char *llm_provider_current_name(void) {
+    return s_current_provider ? s_current_provider->name : "unknown";
+}
+
+/* Check if current provider is OpenAI-compatible */
+bool llm_provider_is_openai_compatible(void) {
+    return s_current_provider ? s_current_provider->is_openai_compatible : false;
+}
+
+/* Get API URL for current provider (with dynamic Base URL support) */
+const char *llm_provider_api_url(void) {
+    if (s_base_url[0] != '\0') {
+        /* Use configured Base URL */
+        static char full_url[512];
+        snprintf(full_url, sizeof(full_url), "%s%s", s_base_url, s_current_provider->default_path);
+        return full_url;
+    }
+    /* Use default API URL */
+    return s_current_provider ? s_current_provider->default_api_url : "";
+}
+
+/* Get hostname for current provider */
+const char *llm_provider_host(void) {
+    if (s_base_url[0] != '\0') {
+        /* Extract hostname from Base URL */
+        static char hostname[256];
+        const char *start = s_base_url;
+        if (strncmp(start, "https://", 8) == 0) start += 8;
+        else if (strncmp(start, "http://", 7) == 0) start += 7;
+        
+        const char *end = strchr(start, '/');
+        if (end) {
+            size_t len = end - start;
+            if (len < sizeof(hostname)) {
+                memcpy(hostname, start, len);
+                hostname[len] = '\0';
+                return hostname;
+            }
+        }
+        /* No path, copy whole string */
+        strncpy(hostname, start, sizeof(hostname) - 1);
+        hostname[sizeof(hostname) - 1] = '\0';
+        return hostname;
+    }
+    /* Use default host */
+    return s_current_provider ? s_current_provider->default_host : "";
+}
+
+/* Get API path for current provider */
+const char *llm_provider_path(void) {
+    return s_current_provider ? s_current_provider->default_path : "";
+}
+
+/* Provider-specific API key management */
+void llm_provider_set_api_key(const char *provider_name, const char *api_key) {
+    if (!provider_name || !api_key) return;
+    
+    const char *nvs_key = get_provider_api_key_nvs_key(provider_name);
+    if (!nvs_key) {
+        ESP_LOGW(TAG, "No NVS key for provider: %s", provider_name);
+        return;
+    }
+    
+    nvs_handle_t nvs;
+    if (nvs_open(MIMI_NVS_LLM, NVS_READWRITE, &nvs) == ESP_OK) {
+        nvs_set_str(nvs, nvs_key, api_key);
+        nvs_commit(nvs);
+        nvs_close(nvs);
+        ESP_LOGI(TAG, "API key saved for provider: %s", provider_name);
+    }
+    
+    /* If this is the current provider, update in-memory key */
+    if (strcmp(provider_name, s_current_provider->name) == 0) {
+        strncpy(s_api_key, api_key, sizeof(s_api_key) - 1);
+        s_api_key[sizeof(s_api_key) - 1] = '\0';
+    }
+}
+
+/* Provider-specific Base URL management */
+void llm_provider_set_base_url(const char *provider_name, const char *base_url) {
+    if (!provider_name || !base_url) return;
+    
+    const char *nvs_key = get_provider_base_url_nvs_key(provider_name);
+    if (!nvs_key) {
+        ESP_LOGW(TAG, "No NVS key for provider: %s", provider_name);
+        return;
+    }
+    
+    nvs_handle_t nvs;
+    if (nvs_open(MIMI_NVS_LLM, NVS_READWRITE, &nvs) == ESP_OK) {
+        nvs_set_str(nvs, nvs_key, base_url);
+        nvs_commit(nvs);
+        nvs_close(nvs);
+        ESP_LOGI(TAG, "Base URL saved for provider: %s", provider_name);
+    }
+    
+    /* If this is the current provider, update in-memory Base URL */
+    if (strcmp(provider_name, s_current_provider->name) == 0) {
+        strncpy(s_base_url, base_url, sizeof(s_base_url) - 1);
+        s_base_url[sizeof(s_base_url) - 1] = '\0';
+    }
+}
+
+/* Get API key for a provider */
+const char *llm_provider_get_api_key(const char *provider_name) {
+    if (!provider_name) return NULL;
+    
+    /* If this is the current provider, return in-memory key */
+    if (strcmp(provider_name, s_current_provider->name) == 0) {
+        return s_api_key;
+    }
+    
+    /* Otherwise, load from NVS */
+    static char key_buffer[LLM_API_KEY_MAX_LEN] = {0};
+    const char *nvs_key = get_provider_api_key_nvs_key(provider_name);
+    if (!nvs_key) return NULL;
+    
+    nvs_handle_t nvs;
+    if (nvs_open(MIMI_NVS_LLM, NVS_READONLY, &nvs) == ESP_OK) {
+        size_t len = sizeof(key_buffer);
+        if (nvs_get_str(nvs, nvs_key, key_buffer, &len) == ESP_OK && key_buffer[0]) {
+            nvs_close(nvs);
+            return key_buffer;
+        }
+        nvs_close(nvs);
+    }
+    return NULL;
+}
+
+/* Get Base URL for a provider */
+const char *llm_provider_get_base_url(const char *provider_name) {
+    if (!provider_name) return NULL;
+    
+    /* If this is the current provider, return in-memory Base URL */
+    if (strcmp(provider_name, s_current_provider->name) == 0) {
+        return s_base_url[0] ? s_base_url : NULL;
+    }
+    
+    /* Otherwise, load from NVS */
+    static char url_buffer[256] = {0};
+    const char *nvs_key = get_provider_base_url_nvs_key(provider_name);
+    if (!nvs_key) return NULL;
+    
+    nvs_handle_t nvs;
+    if (nvs_open(MIMI_NVS_LLM, NVS_READONLY, &nvs) == ESP_OK) {
+        size_t len = sizeof(url_buffer);
+        if (nvs_get_str(nvs, nvs_key, url_buffer, &len) == ESP_OK && url_buffer[0]) {
+            nvs_close(nvs);
+            return url_buffer;
+        }
+        nvs_close(nvs);
+    }
+    return NULL;
+}
+
+/* Initialize provider system (load from NVS) */
+void llm_provider_init(void) {
+    /* Load API key for current provider */
+    const char *api_key = llm_provider_get_api_key(s_current_provider->name);
+    if (api_key) {
+        strncpy(s_api_key, api_key, sizeof(s_api_key) - 1);
+        s_api_key[sizeof(s_api_key) - 1] = '\0';
+    } else {
+        s_api_key[0] = '\0';
+    }
+    
+    /* Load Base URL for current provider */
+    const char *base_url = llm_provider_get_base_url(s_current_provider->name);
+    if (base_url) {
+        strncpy(s_base_url, base_url, sizeof(s_base_url) - 1);
+        s_base_url[sizeof(s_base_url) - 1] = '\0';
+    } else {
+        s_base_url[0] = '\0';
+    }
+    
+    ESP_LOGI(TAG, "Provider initialized: %s (API key: %s, Base URL: %s)",
+             s_current_provider->name,
+             s_api_key[0] ? "set" : "not set",
+             s_base_url[0] ? s_base_url : "default");
+}
+
+/* Save provider configuration to NVS */
+void llm_provider_save_config(const char *provider_name) {
+    /* This function is intentionally left empty - 
+       individual set functions already save to NVS */
+}
+
+/* Common authentication header setup for OpenAI-compatible providers */
+void llm_provider_set_auth_headers(esp_http_client_handle_t client, const char *api_key) {
+    if (!client || !api_key) return;
+    
+    /* All OpenAI-compatible providers use Bearer token authentication */
+    char auth[LLM_API_KEY_MAX_LEN + 16];
+    snprintf(auth, sizeof(auth), "Bearer %s", api_key);
+    esp_http_client_set_header(client, "Authorization", auth);
+}
--- a/main/llm/llm_provider.h
+++ b/main/llm/llm_provider.h
@@ -0,0 +1,68 @@
+#pragma once
+
+#include <stdbool.h>
+#include <stddef.h>
+#include "esp_err.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/* Forward declaration for esp_http_client_handle_t */
+typedef struct esp_http_client* esp_http_client_handle_t;
+
+/* Provider configuration structure */
+typedef struct {
+    const char *name;                    /* Provider name, e.g., "anthropic", "openai", "siliconflow", "volcengine" */
+    const char *default_api_url;         /* Default API URL */
+    const char *default_host;            /* Default hostname */
+    const char *default_path;            /* Default API path */
+    bool is_openai_compatible;           /* Whether this provider uses OpenAI-compatible API */
+} llm_provider_config_t;
+
+/* Provider registry - all supported providers */
+extern const llm_provider_config_t llm_providers[];
+extern const int llm_provider_count;
+
+/* Find provider configuration by name */
+const llm_provider_config_t *llm_provider_find(const char *name);
+
+/* Get current provider configuration */
+const llm_provider_config_t *llm_provider_current(void);
+
+/* Set current provider by name */
+void llm_provider_set_current(const char *name);
+
+/* Get current provider name */
+const char *llm_provider_current_name(void);
+
+/* Check if current provider is OpenAI-compatible */
+bool llm_provider_is_openai_compatible(void);
+
+/* Get API URL for current provider (with dynamic Base URL support) */
+const char *llm_provider_api_url(void);
+
+/* Get hostname for current provider */
+const char *llm_provider_host(void);
+
+/* Get API path for current provider */
+const char *llm_provider_path(void);
+
+/* Provider-specific API key and Base URL management */
+void llm_provider_set_api_key(const char *provider_name, const char *api_key);
+void llm_provider_set_base_url(const char *provider_name, const char *base_url);
+const char *llm_provider_get_api_key(const char *provider_name);
+const char *llm_provider_get_base_url(const char *provider_name);
+
+/* Initialize provider system (load from NVS) */
+void llm_provider_init(void);
+
+/* Save provider configuration to NVS */
+void llm_provider_save_config(const char *provider_name);
+
+/* Common authentication header setup for OpenAI-compatible providers */
+void llm_provider_set_auth_headers(esp_http_client_handle_t client, const char *api_key);
+
+#ifdef __cplusplus
+}
+#endif
--- a/main/llm/llm_proxy.c
+++ b/main/llm/llm_proxy.c
@@ -1,9 +1,11 @@
 #include "llm_proxy.h"
+#include "llm_provider.h"
 #include "mimi_config.h"
 #include "proxy/http_proxy.h"

 #include <string.h>
 #include <stdlib.h>
+#include <stdbool.h>
 #include "esp_log.h"
 #include "esp_http_client.h"
 #include "esp_crt_bundle.h"
@@ -184,28 +186,31 @@ static esp_err_t http_event_handler(esp_http_client_event_t *evt)

 static bool provider_is_openai(void)
 {
-    return strcmp(s_provider, "openai") == 0;
+    return llm_provider_is_openai_compatible();
 }

 static const char *llm_api_url(void)
 {
-    return provider_is_openai() ? MIMI_OPENAI_API_URL : MIMI_LLM_API_URL;
+    return llm_provider_api_url();
 }

 static const char *llm_api_host(void)
 {
-    return provider_is_openai() ? "api.openai.com" : "api.anthropic.com";
+    return llm_provider_host();
 }

 static const char *llm_api_path(void)
 {
-    return provider_is_openai() ? "/v1/chat/completions" : "/v1/messages";
+    return llm_provider_path();
 }

 /* ── Init ─────────────────────────────────────────────────────── */

 esp_err_t llm_proxy_init(void)
 {
+    /* Initialize provider system */
+    llm_provider_init();
+    
    /* Start with build-time defaults */
    if (MIMI_SECRET_API_KEY[0] != '\0') {
        safe_copy(s_api_key, sizeof(s_api_key), MIMI_SECRET_API_KEY);
@@ -215,6 +220,8 @@ esp_err_t llm_proxy_init(void)
    }
    if (MIMI_SECRET_MODEL_PROVIDER[0] != '\0') {
        safe_copy(s_provider, sizeof(s_provider), MIMI_SECRET_MODEL_PROVIDER);
+        /* Set current provider based on build-time default */
+        llm_provider_set_current(s_provider);
    }

    /* NVS overrides take highest priority (set via CLI) */
@@ -234,10 +241,31 @@ esp_err_t llm_proxy_init(void)
        len = sizeof(provider_tmp);
        if (nvs_get_str(nvs, MIMI_NVS_KEY_PROVIDER, provider_tmp, &len) == ESP_OK && provider_tmp[0]) {
            safe_copy(s_provider, sizeof(s_provider), provider_tmp);
+            /* Set current provider based on NVS override */
+            llm_provider_set_current(s_provider);
        }
        nvs_close(nvs);
    }

+    /* Load provider-specific API key from NVS */
+    const char *provider_api_key = llm_provider_get_api_key(s_provider);
+    if (provider_api_key && provider_api_key[0]) {
+        safe_copy(s_api_key, sizeof(s_api_key), provider_api_key);
+    }
+
+    /* Fall back to build-time provider-specific API key if NVS key is empty */
+    if (s_api_key[0] == '\0') {
+        if (strcmp(s_provider, "siliconflow") == 0 && MIMI_SECRET_SILICONFLOW_API_KEY[0] != '\0') {
+            safe_copy(s_api_key, sizeof(s_api_key), MIMI_SECRET_SILICONFLOW_API_KEY);
+        } else if (strcmp(s_provider, "volcengine") == 0 && MIMI_SECRET_VOLCENGINE_API_KEY[0] != '\0') {
+            safe_copy(s_api_key, sizeof(s_api_key), MIMI_SECRET_VOLCENGINE_API_KEY);
+        } else if (strcmp(s_provider, "openai") == 0 && MIMI_SECRET_OPENAI_API_KEY[0] != '\0') {
+            safe_copy(s_api_key, sizeof(s_api_key), MIMI_SECRET_OPENAI_API_KEY);
+        } else if (strcmp(s_provider, "anthropic") == 0 && MIMI_SECRET_ANTHROPIC_API_KEY[0] != '\0') {
+            safe_copy(s_api_key, sizeof(s_api_key), MIMI_SECRET_ANTHROPIC_API_KEY);
+        }
+    }
+
    if (s_api_key[0]) {
        ESP_LOGI(TAG, "LLM proxy initialized (provider: %s, model: %s)", s_provider, s_model);
    } else {
@@ -265,13 +293,15 @@ static esp_err_t llm_http_direct(const char *post_data, resp_buf_t *rb, int *out

    esp_http_client_set_method(client, HTTP_METHOD_POST);
    esp_http_client_set_header(client, "Content-Type", "application/json");
-    if (provider_is_openai()) {
+    
+    /* Use provider-specific authentication */
+    if (llm_provider_is_openai_compatible()) {
+        /* OpenAI-compatible providers use Bearer token authentication */
        if (s_api_key[0]) {
-            char auth[LLM_API_KEY_MAX_LEN + 16];
-            snprintf(auth, sizeof(auth), "Bearer %s", s_api_key);
-            esp_http_client_set_header(client, "Authorization", auth);
+            llm_provider_set_auth_headers(client, s_api_key);
        }
    } else {
+        /* Anthropic uses x-api-key authentication */
        esp_http_client_set_header(client, "x-api-key", s_api_key);
        esp_http_client_set_header(client, "anthropic-version", MIMI_LLM_API_VERSION);
    }
@@ -293,7 +323,9 @@ static esp_err_t llm_http_via_proxy(const char *post_data, resp_buf_t *rb, int *
    int body_len = strlen(post_data);
    char header[1024];
    int hlen = 0;
-    if (provider_is_openai()) {
+    
+    if (llm_provider_is_openai_compatible()) {
+        /* OpenAI-compatible providers use Bearer token authentication */
        hlen = snprintf(header, sizeof(header),
            "POST %s HTTP/1.1\r\n"
            "Host: %s\r\n"
@@ -303,6 +335,7 @@ static esp_err_t llm_http_via_proxy(const char *post_data, resp_buf_t *rb, int *
            "Connection: close\r\n\r\n",
            llm_api_path(), llm_api_host(), s_api_key, body_len);
    } else {
+        /* Anthropic uses x-api-key authentication */
        hlen = snprintf(header, sizeof(header),
            "POST %s HTTP/1.1\r\n"
            "Host: %s\r\n"
@@ -559,13 +592,13 @@ esp_err_t llm_chat_tools(const char *system_prompt,
    /* Build request body (non-streaming) */
    cJSON *body = cJSON_CreateObject();
    cJSON_AddStringToObject(body, "model", s_model);
-    if (provider_is_openai()) {
+    if (llm_provider_is_openai_compatible()) {
        cJSON_AddNumberToObject(body, "max_completion_tokens", MIMI_LLM_MAX_TOKENS);
    } else {
        cJSON_AddNumberToObject(body, "max_tokens", MIMI_LLM_MAX_TOKENS);
    }

-    if (provider_is_openai()) {
+    if (llm_provider_is_openai_compatible()) {
        cJSON *openai_msgs = convert_messages_openai(system_prompt, messages);
        cJSON_AddItemToObject(body, "messages", openai_msgs);

@@ -635,7 +668,7 @@ esp_err_t llm_chat_tools(const char *system_prompt,
        return ESP_FAIL;
    }

-    if (provider_is_openai()) {
+    if (llm_provider_is_openai_compatible()) {
        cJSON *choices = cJSON_GetObjectItem(root, "choices");
        cJSON *choice0 = choices && cJSON_IsArray(choices) ? cJSON_GetArrayItem(choices, 0) : NULL;
        if (choice0) {
@@ -780,7 +813,11 @@ esp_err_t llm_set_api_key(const char *api_key)
    nvs_close(nvs);

    safe_copy(s_api_key, sizeof(s_api_key), api_key);
-    ESP_LOGI(TAG, "API key saved");
+    
+    /* Also save to provider-specific NVS key */
+    llm_provider_set_api_key(s_provider, api_key);
+    
+    ESP_LOGI(TAG, "API key saved for provider: %s", s_provider);
    return ESP_OK;
 }

@@ -806,6 +843,43 @@ esp_err_t llm_set_provider(const char *provider)
    nvs_close(nvs);

    safe_copy(s_provider, sizeof(s_provider), provider);
+    
+    /* Update current provider in the provider system */
+    llm_provider_set_current(provider);
+    
+    /* Load provider-specific API key if available */
+    const char *provider_api_key = llm_provider_get_api_key(provider);
+    if (provider_api_key && provider_api_key[0]) {
+        safe_copy(s_api_key, sizeof(s_api_key), provider_api_key);
+    } else {
+        s_api_key[0] = '\0';
+    }
+    
    ESP_LOGI(TAG, "Provider set to: %s", s_provider);
    return ESP_OK;
 }
+
+esp_err_t llm_set_base_url(const char *provider, const char *base_url)
+{
+    if (!provider || !base_url) return ESP_ERR_INVALID_ARG;
+    
+    /* Save to provider-specific NVS key */
+    llm_provider_set_base_url(provider, base_url);
+    
+    /* If this is the current provider, update in-memory Base URL */
+    if (strcmp(provider, s_provider) == 0) {
+        /* Reload provider configuration to pick up new Base URL */
+        llm_provider_init();
+    }
+    
+    ESP_LOGI(TAG, "Base URL set for provider: %s", provider);
+    return ESP_OK;
+}
+
+const char *llm_get_base_url(const char *provider)
+{
+    if (!provider) return NULL;
+    
+    /* Get Base URL from provider system */
+    return llm_provider_get_base_url(provider);
+}
--- a/main/llm/llm_proxy.h
+++ b/main/llm/llm_proxy.h
@@ -27,6 +27,16 @@ esp_err_t llm_set_provider(const char *provider);
 */
 esp_err_t llm_set_model(const char *model);

+/**
+ * Save the Base URL for a provider to NVS.
+ */
+esp_err_t llm_set_base_url(const char *provider, const char *base_url);
+
+/**
+ * Get the Base URL for a provider from NVS.
+ */
+const char *llm_get_base_url(const char *provider);
+
 /* ── Tool Use Support ──────────────────────────────────────────── */

 typedef struct {
--- a/main/memory/session_mgr.c
+++ b/main/memory/session_mgr.c
@@ -24,7 +24,7 @@ esp_err_t session_mgr_init(void)

 esp_err_t session_append(const char *chat_id, const char *role, const char *content)
 {
-    char path[64];
+    char path[128];
    session_path(chat_id, path, sizeof(path));

    FILE *f = fopen(path, "a");
@@ -52,7 +52,7 @@ esp_err_t session_append(const char *chat_id, const char *role, const char *cont

 esp_err_t session_get_history_json(const char *chat_id, char *buf, size_t size, int max_msgs)
 {
-    char path[64];
+    char path[128];
    session_path(chat_id, path, sizeof(path));

    FILE *f = fopen(path, "r");
@@ -127,7 +127,7 @@ esp_err_t session_get_history_json(const char *chat_id, char *buf, size_t size,

 esp_err_t session_clear(const char *chat_id)
 {
-    char path[64];
+    char path[128];
    session_path(chat_id, path, sizeof(path));

    if (remove(path) == 0) {
--- a/main/mimi.c
+++ b/main/mimi.c
@@ -1,5 +1,6 @@
 #include <stdio.h>
 #include <string.h>
+#include <stdbool.h>
 #include "freertos/FreeRTOS.h"
 #include "freertos/task.h"
 #include "esp_log.h"
--- a/main/mimi_config.h
+++ b/main/mimi_config.h
@@ -47,6 +47,26 @@
 #define MIMI_SECRET_TAVILY_KEY      ""
 #endif

+/* Provider-specific API keys (fallback when generic MIMI_SECRET_API_KEY is empty) */
+#ifndef MIMI_SECRET_ANTHROPIC_API_KEY
+#define MIMI_SECRET_ANTHROPIC_API_KEY   ""
+#endif
+#ifndef MIMI_SECRET_OPENAI_API_KEY
+#define MIMI_SECRET_OPENAI_API_KEY      ""
+#endif
+#ifndef MIMI_SECRET_SILICONFLOW_API_KEY
+#define MIMI_SECRET_SILICONFLOW_API_KEY ""
+#endif
+#ifndef MIMI_SECRET_SILICONFLOW_BASE_URL
+#define MIMI_SECRET_SILICONFLOW_BASE_URL "https://api.siliconflow.cn/v1"
+#endif
+#ifndef MIMI_SECRET_VOLCENGINE_API_KEY
+#define MIMI_SECRET_VOLCENGINE_API_KEY  ""
+#endif
+#ifndef MIMI_SECRET_VOLCENGINE_BASE_URL
+#define MIMI_SECRET_VOLCENGINE_BASE_URL "https://ark.cn-beijing.volces.com/api/v3"
+#endif
+
 /* WiFi */
 #define MIMI_WIFI_MAX_RETRY          10
 #define MIMI_WIFI_RETRY_BASE_MS      1000
@@ -80,7 +100,7 @@
 #define MIMI_AGENT_SEND_WORKING_STATUS 1

 /* Timezone (POSIX TZ format) */
-#define MIMI_TIMEZONE                "PST8PDT,M3.2.0,M11.1.0"
+#define MIMI_TIMEZONE                "CST-8"

 /* LLM */
 #define MIMI_LLM_DEFAULT_MODEL       "claude-opus-4-5"
@@ -88,6 +108,8 @@
 #define MIMI_LLM_MAX_TOKENS          4096
 #define MIMI_LLM_API_URL             "https://api.anthropic.com/v1/messages"
 #define MIMI_OPENAI_API_URL          "https://api.openai.com/v1/chat/completions"
+#define MIMI_SILICONFLOW_API_URL     "https://api.siliconflow.cn/v1/chat/completions"
+#define MIMI_VOLCENGINE_API_URL      "https://ark.cn-beijing.volces.com/api/v3/chat/completions"
 #define MIMI_LLM_API_VERSION         "2023-06-01"
 #define MIMI_LLM_STREAM_BUF_SIZE     (32 * 1024)
 #define MIMI_LLM_LOG_VERBOSE_PAYLOAD 0
@@ -154,6 +176,19 @@
 #define MIMI_NVS_KEY_PROXY_PORT      "port"
 #define MIMI_NVS_KEY_PROXY_TYPE      "proxy_type"

+/* Provider-specific NVS Keys */
+#define MIMI_NVS_KEY_ANTHROPIC_API_KEY   "anthropic_api_key"
+#define MIMI_NVS_KEY_ANTHROPIC_BASE_URL  "anthropic_base_url"
+#define MIMI_NVS_KEY_OPENAI_API_KEY      "openai_api_key"
+#define MIMI_NVS_KEY_OPENAI_BASE_URL     "openai_base_url"
+#define MIMI_NVS_KEY_SILICONFLOW_API_KEY   "siliconflow_api_key"
+#define MIMI_NVS_KEY_SILICONFLOW_BASE_URL  "siliconflow_base_url"
+#define MIMI_NVS_KEY_VOLCENGINE_API_KEY    "volcengine_api_key"
+#define MIMI_NVS_KEY_VOLCENGINE_BASE_URL   "volcengine_base_url"
+
+/* System NVS Keys */
+#define MIMI_NVS_KEY_TIMEZONE            "timezone"
+
 /* WiFi Onboarding (Captive Portal) */
 #define MIMI_ONBOARD_AP_PREFIX    "MimiClaw-"
 #define MIMI_ONBOARD_AP_PASS      ""          /* open network */
--- a/main/mimi_secrets.h.example
+++ b/main/mimi_secrets.h.example
@@ -21,11 +21,35 @@
 #define MIMI_SECRET_FEISHU_APP_ID   ""
 #define MIMI_SECRET_FEISHU_APP_SECRET ""

-/* Anthropic API */
+/* LLM Configuration
+ *
+ * Method 1: Generic API key (works for any provider)
+ *   Set MIMI_SECRET_API_KEY + MIMI_SECRET_MODEL_PROVIDER + MIMI_SECRET_MODEL
+ *
+ * Method 2: Provider-specific API keys (recommended for multi-provider setups)
+ *   Set MIMI_SECRET_<PROVIDER>_API_KEY for each provider you want to use
+ *   Switch providers via onboard portal or CLI: set_model_provider <provider>
+ *
+ * Priority: NVS (runtime config) > provider-specific key > generic key
+ */
 #define MIMI_SECRET_API_KEY         ""
-#define MIMI_SECRET_MODEL           ""
+#define MIMI_SECRET_MODEL           "claude-opus-4-5"
 #define MIMI_SECRET_MODEL_PROVIDER  "anthropic"

+/* Anthropic (Claude) */
+#define MIMI_SECRET_ANTHROPIC_API_KEY   ""
+
+/* OpenAI (GPT) */
+#define MIMI_SECRET_OPENAI_API_KEY      ""
+
+/* SiliconFlow (硅基流动, OpenAI-compatible) */
+#define MIMI_SECRET_SILICONFLOW_API_KEY   ""
+#define MIMI_SECRET_SILICONFLOW_BASE_URL  "https://api.siliconflow.cn/v1"
+
+/* Volcengine (火山引擎/豆包, OpenAI-compatible) */
+#define MIMI_SECRET_VOLCENGINE_API_KEY    ""
+#define MIMI_SECRET_VOLCENGINE_BASE_URL   "https://ark.cn-beijing.volces.com/api/v3"
+
 /* HTTP Proxy (leave empty or set both) */
 #define MIMI_SECRET_PROXY_HOST      ""
 #define MIMI_SECRET_PROXY_PORT      ""
--- a/main/onboard/onboard_html.h
+++ b/main/onboard/onboard_html.h
@@ -56,10 +56,14 @@ static const char ONBOARD_HTML[] =
 "<label>Model</label>"
 "<input id='model' placeholder='claude-opus-4-5' value='claude-opus-4-5'>"
 "<label>Provider</label>"
-"<select id='provider'>"
+"<select id='provider' onchange='onProviderChange()'>"
 "<option value='anthropic'>Anthropic</option>"
 "<option value='openai'>OpenAI</option>"
+"<option value='siliconflow'>SiliconFlow (硅基流动)</option>"
+"<option value='volcengine'>Volcengine (火山引擎)</option>"
 "</select>"
+"<label>Base URL</label>"
+"<input id='base_url' placeholder='https://api.example.com/v1'>"
 "</div></div>"

 /* Telegram section */
@@ -133,8 +137,15 @@ static const char ONBOARD_HTML[] =
 "btn.textContent='Scan WiFi Networks';btn.disabled=false;"
 "}).catch(()=>{btn.textContent='Scan WiFi Networks';btn.disabled=false})}"

+"function onProviderChange(){"
+"var p=document.getElementById('provider').value;"
+"var u=document.getElementById('base_url');"
+"if(p==='siliconflow'){u.value='https://api.siliconflow.cn/v1'}"
+"else if(p==='volcengine'){u.value='https://ark.cn-beijing.volces.com/api/v3'}"
+"else{u.value=''}}"
+
 "function save(){"
-"var fields=['ssid','password','api_key','model','provider','tg_token',"
+"var fields=['ssid','password','api_key','model','provider','base_url','tg_token',"
 "'feishu_app_id','feishu_app_secret','proxy_host','proxy_port','proxy_type','search_key','tavily_key'];"
 "var data={};"
 "fields.forEach(f=>{data[f]=document.getElementById(f).value.trim()});"
--- a/main/onboard/wifi_onboard.c
+++ b/main/onboard/wifi_onboard.c
@@ -220,6 +220,40 @@ static esp_err_t http_get_config(httpd_req_t *req)
    json_add_effective_config(root, "api_key", MIMI_NVS_LLM, MIMI_NVS_KEY_API_KEY, MIMI_SECRET_API_KEY);
    json_add_effective_config(root, "model", MIMI_NVS_LLM, MIMI_NVS_KEY_MODEL, MIMI_SECRET_MODEL);
    json_add_effective_config(root, "provider", MIMI_NVS_LLM, MIMI_NVS_KEY_PROVIDER, MIMI_SECRET_MODEL_PROVIDER);
+
+    /* Provider-specific Base URL (load from current provider's NVS key) */
+    {
+        char base_url[256] = {0};
+        bool found = false;
+        char provider[32] = {0};
+        nvs_handle_t nvs;
+        if (nvs_open(MIMI_NVS_LLM, NVS_READONLY, &nvs) == ESP_OK) {
+            size_t len = sizeof(provider);
+            if (nvs_get_str(nvs, MIMI_NVS_KEY_PROVIDER, provider, &len) != ESP_OK || !provider[0]) {
+                /* Fall back to build-time provider if NVS doesn't have one */
+                strlcpy(provider, MIMI_SECRET_MODEL_PROVIDER, sizeof(provider));
+            }
+            /* Try to load provider-specific base URL from NVS */
+            const char *url_key = NULL;
+            if (strcmp(provider, "anthropic") == 0) url_key = MIMI_NVS_KEY_ANTHROPIC_BASE_URL;
+            else if (strcmp(provider, "openai") == 0) url_key = MIMI_NVS_KEY_OPENAI_BASE_URL;
+            else if (strcmp(provider, "siliconflow") == 0) url_key = MIMI_NVS_KEY_SILICONFLOW_BASE_URL;
+            else if (strcmp(provider, "volcengine") == 0) url_key = MIMI_NVS_KEY_VOLCENGINE_BASE_URL;
+            if (url_key) {
+                len = sizeof(base_url);
+                if (nvs_get_str(nvs, url_key, base_url, &len) == ESP_OK && base_url[0]) {
+                    found = true;
+                }
+            }
+            nvs_close(nvs);
+        }
+        if (!found) {
+            /* Fall back to build-time defaults */
+            if (strcmp(provider, "siliconflow") == 0) strlcpy(base_url, MIMI_SECRET_SILICONFLOW_BASE_URL, sizeof(base_url));
+            else if (strcmp(provider, "volcengine") == 0) strlcpy(base_url, MIMI_SECRET_VOLCENGINE_BASE_URL, sizeof(base_url));
+        }
+        cJSON_AddStringToObject(root, "base_url", base_url);
+    }
    json_add_effective_config(root, "tg_token", MIMI_NVS_TG, MIMI_NVS_KEY_TG_TOKEN, MIMI_SECRET_TG_TOKEN);
    json_add_effective_config(root, "feishu_app_id", MIMI_NVS_FEISHU, MIMI_NVS_KEY_FEISHU_APP_ID, MIMI_SECRET_FEISHU_APP_ID);
    json_add_effective_config(root, "feishu_app_secret", MIMI_NVS_FEISHU, MIMI_NVS_KEY_FEISHU_APP_SECRET, MIMI_SECRET_FEISHU_APP_SECRET);
@@ -344,6 +378,37 @@ static esp_err_t http_post_save(httpd_req_t *req)
    nvs_sync_field(root, "model",    MIMI_NVS_LLM,    MIMI_NVS_KEY_MODEL);
    nvs_sync_field(root, "provider", MIMI_NVS_LLM,    MIMI_NVS_KEY_PROVIDER);

+    /* Save API key and base URL to provider-specific NVS keys */
+    {
+        cJSON *provider_item = cJSON_GetObjectItem(root, "provider");
+        cJSON *api_key_item = cJSON_GetObjectItem(root, "api_key");
+        cJSON *base_url_item = cJSON_GetObjectItem(root, "base_url");
+        if (provider_item && cJSON_IsString(provider_item) && provider_item->valuestring[0]) {
+            const char *provider = provider_item->valuestring;
+            const char *api_key_nvs = NULL;
+            const char *base_url_nvs = NULL;
+            if (strcmp(provider, "anthropic") == 0) {
+                api_key_nvs = MIMI_NVS_KEY_ANTHROPIC_API_KEY;
+                base_url_nvs = MIMI_NVS_KEY_ANTHROPIC_BASE_URL;
+            } else if (strcmp(provider, "openai") == 0) {
+                api_key_nvs = MIMI_NVS_KEY_OPENAI_API_KEY;
+                base_url_nvs = MIMI_NVS_KEY_OPENAI_BASE_URL;
+            } else if (strcmp(provider, "siliconflow") == 0) {
+                api_key_nvs = MIMI_NVS_KEY_SILICONFLOW_API_KEY;
+                base_url_nvs = MIMI_NVS_KEY_SILICONFLOW_BASE_URL;
+            } else if (strcmp(provider, "volcengine") == 0) {
+                api_key_nvs = MIMI_NVS_KEY_VOLCENGINE_API_KEY;
+                base_url_nvs = MIMI_NVS_KEY_VOLCENGINE_BASE_URL;
+            }
+            if (api_key_nvs && api_key_item && cJSON_IsString(api_key_item)) {
+                nvs_sync_field(root, "api_key", MIMI_NVS_LLM, api_key_nvs);
+            }
+            if (base_url_nvs && base_url_item && cJSON_IsString(base_url_item)) {
+                nvs_sync_field(root, "base_url", MIMI_NVS_LLM, base_url_nvs);
+            }
+        }
+    }
+
    /* Telegram */
    nvs_sync_field(root, "tg_token", MIMI_NVS_TG,     MIMI_NVS_KEY_TG_TOKEN);

--- a/main/ota/ota_manager.c
+++ b/main/ota/ota_manager.c
@@ -5,6 +5,7 @@
 #include "esp_http_client.h"
 #include "esp_crt_bundle.h"
 #include "esp_https_ota.h"
+#include "esp_system.h"

 static const char *TAG = "ota";

--- a/main/proxy/http_proxy.c
+++ b/main/proxy/http_proxy.c
@@ -3,8 +3,10 @@

 #include <string.h>
 #include <stdlib.h>
+#include <stdbool.h>
 #include <errno.h>
 #include <sys/socket.h>
+#include <sys/time.h>
 #include <netdb.h>
 #include <unistd.h>

@@ -245,7 +247,7 @@ static int open_socks5_tunnel(const char *host, int port, int timeout_ms)
    free(req);

    /* Receive connect response */
-    unsigned char resp[256];
+    unsigned char resp[512];
    int resp_len = recv(sock, resp, sizeof(resp), 0);
    if (resp_len < 10) {
        ESP_LOGE(TAG, "No response from SOCKS5 proxy"); close(sock); return -1;
--- a/main/tools/gpio_policy.c
+++ b/main/tools/gpio_policy.c
@@ -4,6 +4,7 @@

 #include <stdlib.h>
 #include <stdio.h>
+#include <stdbool.h>
 #include <string.h>

 #ifndef GPIO_IS_VALID_GPIO
--- a/main/tools/tool_get_time.c
+++ b/main/tools/tool_get_time.c
@@ -4,6 +4,7 @@

 #include <string.h>
 #include <stdlib.h>
+#include <stdbool.h>
 #include <time.h>
 #include <sys/time.h>
 #include "esp_log.h"
--- a/main/tools/tool_registry.c
+++ b/main/tools/tool_registry.c
@@ -2,11 +2,13 @@
 #include "mimi_config.h"
 #include "tools/tool_web_search.h"
 #include "tools/tool_get_time.h"
+#include "tools/tool_set_timezone.h"
 #include "tools/tool_files.h"
 #include "tools/tool_cron.h"
 #include "tools/tool_gpio.h"

 #include <string.h>
+#include <stdlib.h>
 #include "esp_log.h"
 #include "cJSON.h"

@@ -82,6 +84,18 @@ esp_err_t tool_registry_init(void)
    };
    register_tool(&gt);

+    /* Register set_timezone */
+    mimi_tool_t stz = {
+        .name = "set_timezone",
+        .description = "Set the system timezone. Accepts POSIX format (e.g. CST-8, EST5EDT,M3.2.0,M11.1.0) or city name (e.g. Asia/Shanghai, America/New_York).",
+        .input_schema_json =
+            "{\"type\":\"object\","
+            "\"properties\":{\"timezone\":{\"type\":\"string\",\"description\":\"Timezone in POSIX format or city name (e.g. CST-8, Asia/Shanghai)\"}},"
+            "\"required\":[\"timezone\"]}",
+        .execute = tool_set_timezone_execute,
+    };
+    register_tool(&stz);
+
    /* Register read_file */
    mimi_tool_t rf = {
        .name = "read_file",
--- a/main/tools/tool_set_timezone.c
+++ b/main/tools/tool_set_timezone.c
@@ -0,0 +1,145 @@
+#include "tool_set_timezone.h"
+#include "mimi_config.h"
+
+#include <string.h>
+#include <stdlib.h>
+#include <stdbool.h>
+#include <time.h>
+#include "esp_log.h"
+#include "nvs.h"
+#include "cJSON.h"
+
+static const char *TAG = "tool_timezone";
+
+/* Common timezone mappings for user-friendly names */
+typedef struct {
+    const char *name;
+    const char *posix_tz;
+} tz_mapping_t;
+
+static const tz_mapping_t tz_mappings[] = {
+    { "Asia/Shanghai", "CST-8" },
+    { "Asia/Beijing", "CST-8" },
+    { "Asia/Hong_Kong", "HKT-8" },
+    { "Asia/Tokyo", "JST-9" },
+    { "Asia/Seoul", "KST-9" },
+    { "Asia/Singapore", "SGT-8" },
+    { "Asia/Kolkata", "IST-5:30" },
+    { "Asia/Dubai", "GST-4" },
+    { "Europe/London", "GMT0BST,M3.5.0/1,M10.5.0" },
+    { "Europe/Paris", "CET-1CEST,M3.5.0,M10.5.0/3" },
+    { "Europe/Berlin", "CET-1CEST,M3.5.0,M10.5.0/3" },
+    { "America/New_York", "EST5EDT,M3.2.0,M11.1.0" },
+    { "America/Chicago", "CST6CDT,M3.2.0,M11.1.0" },
+    { "America/Denver", "MST7MDT,M3.2.0,M11.1.0" },
+    { "America/Los_Angeles", "PST8PDT,M3.2.0,M11.1.0" },
+    { "Australia/Sydney", "AEST-10AEDT,M10.1.0,M4.1.0/3" },
+    { "UTC", "UTC0" },
+    { "GMT", "GMT0" },
+};
+
+static const char *resolve_timezone(const char *tz_str)
+{
+    if (!tz_str || !tz_str[0]) return NULL;
+
+    for (size_t i = 0; i < sizeof(tz_mappings) / sizeof(tz_mappings[0]); i++) {
+        if (strcmp(tz_str, tz_mappings[i].name) == 0) {
+            return tz_mappings[i].posix_tz;
+        }
+    }
+
+    return tz_str;
+}
+
+static bool validate_timezone(const char *tz_str)
+{
+    if (!tz_str || !tz_str[0]) return false;
+    if (strlen(tz_str) > 64) return false;
+
+    for (size_t i = 0; i < sizeof(tz_mappings) / sizeof(tz_mappings[0]); i++) {
+        if (strcmp(tz_str, tz_mappings[i].name) == 0) return true;
+    }
+
+    if (strchr(tz_str, '+') || strchr(tz_str, '-') ||
+        strcmp(tz_str, "UTC0") == 0 || strcmp(tz_str, "GMT0") == 0) {
+        return true;
+    }
+
+    return false;
+}
+
+static esp_err_t save_timezone_nvs(const char *tz_str)
+{
+    nvs_handle_t nvs;
+    esp_err_t err = nvs_open("system_config", NVS_READWRITE, &nvs);
+    if (err != ESP_OK) {
+        ESP_LOGE(TAG, "Failed to open NVS: %s", esp_err_to_name(err));
+        return err;
+    }
+
+    err = nvs_set_str(nvs, MIMI_NVS_KEY_TIMEZONE, tz_str);
+    if (err != ESP_OK) {
+        ESP_LOGE(TAG, "Failed to save timezone: %s", esp_err_to_name(err));
+        nvs_close(nvs);
+        return err;
+    }
+
+    err = nvs_commit(nvs);
+    nvs_close(nvs);
+
+    if (err != ESP_OK) {
+        ESP_LOGE(TAG, "Failed to commit NVS: %s", esp_err_to_name(err));
+        return err;
+    }
+
+    return ESP_OK;
+}
+
+esp_err_t tool_set_timezone_execute(const char *input_json, char *output, size_t output_size)
+{
+    ESP_LOGI(TAG, "Setting timezone...");
+
+    cJSON *root = cJSON_Parse(input_json);
+    if (!root) {
+        snprintf(output, output_size, "Error: invalid JSON input");
+        return ESP_ERR_INVALID_ARG;
+    }
+
+    cJSON *tz_item = cJSON_GetObjectItem(root, "timezone");
+    if (!tz_item || !cJSON_IsString(tz_item)) {
+        cJSON_Delete(root);
+        snprintf(output, output_size, "Error: 'timezone' field required (string)");
+        return ESP_ERR_INVALID_ARG;
+    }
+
+    const char *input_tz = tz_item->valuestring;
+    const char *resolved_tz = resolve_timezone(input_tz);
+
+    if (!resolved_tz || !validate_timezone(resolved_tz)) {
+        cJSON_Delete(root);
+        snprintf(output, output_size, "Error: invalid timezone format '%s'. Use POSIX format (e.g. CST-8) or city name (e.g. Asia/Shanghai)", input_tz);
+        return ESP_ERR_INVALID_ARG;
+    }
+
+    esp_err_t err = save_timezone_nvs(resolved_tz);
+    if (err != ESP_OK) {
+        cJSON_Delete(root);
+        snprintf(output, output_size, "Error: failed to save timezone (%s)", esp_err_to_name(err));
+        return err;
+    }
+
+    setenv("TZ", resolved_tz, 1);
+    tzset();
+
+    time_t now = time(NULL);
+    struct tm tm_now;
+    localtime_r(&now, &tm_now);
+    char time_str[64];
+    strftime(time_str, sizeof(time_str), "%Y-%m-%d %H:%M:%S %Z", &tm_now);
+
+    cJSON_Delete(root);
+    snprintf(output, output_size, "Timezone set to '%s'. Current time: %s", resolved_tz, time_str);
+    ESP_LOGI(TAG, "Timezone set to: %s, current time: %s", resolved_tz, time_str);
+
+    return ESP_OK;
+}
--- a/main/tools/tool_set_timezone.h
+++ b/main/tools/tool_set_timezone.h
@@ -0,0 +1,11 @@
+#pragma once
+
+#include "esp_err.h"
+#include <stddef.h>
+
+/**
+ * Execute set_timezone tool.
+ * Sets the system timezone via NVS and updates the TZ environment variable.
+ * Input JSON: {"timezone": "CST-8"} or {"timezone": "Asia/Shanghai"}
+ */
+esp_err_t tool_set_timezone_execute(const char *input_json, char *output, size_t output_size);
--- a/main/wifi/wifi_manager.c
+++ b/main/wifi/wifi_manager.c
@@ -2,12 +2,18 @@
 #include "mimi_config.h"

 #include <string.h>
+#include <stdbool.h>
 #include <inttypes.h>
 #include "esp_log.h"
 #include "esp_wifi.h"
 #include "esp_netif.h"
 #include "nvs_flash.h"
 #include "nvs.h"
+#include "esp_event.h"
+#include "freertos/FreeRTOS.h"
+#include "freertos/task.h"
+#include "freertos/event_groups.h"
+#include "freertos/timers.h"

 static const char *TAG = "wifi";

@@ -16,20 +22,49 @@ static int s_retry_count = 0;
 static char s_ip_str[16] = "0.0.0.0";
 static bool s_connected = false;
 static bool s_reconnect_enabled = true;
+static TimerHandle_t s_retry_timer = NULL;
+
+static void retry_timer_callback(TimerHandle_t xTimer)
+{
+    (void)xTimer;
+    if (s_reconnect_enabled && !s_connected) {
+        esp_wifi_connect();
+    }
+}

 static const char *wifi_reason_to_str(wifi_err_reason_t reason)
 {
    switch (reason) {
+#ifdef WIFI_REASON_AUTH_EXPIRE
    case WIFI_REASON_AUTH_EXPIRE: return "AUTH_EXPIRE";
+#endif
+#ifdef WIFI_REASON_AUTH_FAIL
    case WIFI_REASON_AUTH_FAIL: return "AUTH_FAIL";
+#endif
+#ifdef WIFI_REASON_ASSOC_EXPIRE
    case WIFI_REASON_ASSOC_EXPIRE: return "ASSOC_EXPIRE";
+#endif
+#ifdef WIFI_REASON_ASSOC_FAIL
    case WIFI_REASON_ASSOC_FAIL: return "ASSOC_FAIL";
+#endif
+#ifdef WIFI_REASON_HANDSHAKE_TIMEOUT
    case WIFI_REASON_HANDSHAKE_TIMEOUT: return "HANDSHAKE_TIMEOUT";
+#endif
+#ifdef WIFI_REASON_NO_AP_FOUND
    case WIFI_REASON_NO_AP_FOUND: return "NO_AP_FOUND";
+#endif
+#ifdef WIFI_REASON_BEACON_TIMEOUT
    case WIFI_REASON_BEACON_TIMEOUT: return "BEACON_TIMEOUT";
+#endif
+#ifdef WIFI_REASON_4WAY_HANDSHAKE_TIMEOUT
    case WIFI_REASON_4WAY_HANDSHAKE_TIMEOUT: return "4WAY_HANDSHAKE_TIMEOUT";
+#endif
+#ifdef WIFI_REASON_MIC_FAILURE
    case WIFI_REASON_MIC_FAILURE: return "MIC_FAILURE";
+#endif
+#ifdef WIFI_REASON_CONNECTION_FAIL
    case WIFI_REASON_CONNECTION_FAIL: return "CONNECTION_FAIL";
+#endif
    default: return "UNKNOWN";
    }
 }
@@ -53,9 +88,10 @@ static void event_handler(void *arg, esp_event_base_t event_base,
            }
            ESP_LOGW(TAG, "Disconnected, retry %d/%d in %" PRIu32 "ms",
                     s_retry_count + 1, MIMI_WIFI_MAX_RETRY, delay_ms);
-            vTaskDelay(pdMS_TO_TICKS(delay_ms));
-            esp_wifi_connect();
            s_retry_count++;
+            /* Use timer instead of blocking vTaskDelay in event handler */
+            if (s_retry_timer) xTimerStop(s_retry_timer, 0);
+            xTimerChangePeriod(s_retry_timer, pdMS_TO_TICKS(delay_ms), 0);
        } else {
            ESP_LOGE(TAG, "Failed to connect after %d retries", MIMI_WIFI_MAX_RETRY);
            xEventGroupSetBits(s_wifi_event_group, WIFI_FAIL_BIT);
@@ -74,6 +110,7 @@ static void event_handler(void *arg, esp_event_base_t event_base,
 esp_err_t wifi_manager_init(void)
 {
    s_wifi_event_group = xEventGroupCreate();
+    s_retry_timer = xTimerCreate("wifi_retry", pdMS_TO_TICKS(1000), pdFALSE, NULL, retry_timer_callback);

    ESP_ERROR_CHECK(esp_netif_init());
    esp_netif_create_default_wifi_sta();
--- a/taolun.md
+++ b/taolun.md
@@ -1,145 +1,126 @@
-# 讨论记录：增加国内大模型厂商接入
+# 讨论记录

-## 对话概述
+---
+
+## 讨论：ESP-IDF v6.0 编译适配

 **日期**：2026-03-31  
-**目标**：为 MimiClaw 项目增加国内大模型厂商的接入，特别是硅基流动和火山方舟（豆包模型）
+**目标**：解决 ESP-IDF v6.0 编译失败问题，完成固件烧录

-## 对话内容
+### 问题清单

-### 用户需求
-用户希望给当前项目增加国内大模型厂商的接入，包括：
-1. 硅基流动的免费模型
-2. 火山方舟的豆包模型
+#### 1. Flash 大小配置错误
+- **错误**：分区表需要 16MB，但 sdkconfig 配置为 2MB
+- **修复**：`sdkconfig` 中 `CONFIG_ESPTOOLPY_FLASHSIZE` 改为 16MB

-### 项目现状分析
+#### 2. WiFi 断开原因码未定义
+- **错误**：`WIFI_REASON_ASSOC_EXPIRE` 等符号在 v6.0 中未定义
+- **修复**：`wifi_manager.c` 中所有 reason code 添加 `#ifdef` 保护

-#### 项目基本信息
- **项目名称**：MimiClaw
- **运行平台**：ESP32-S3（纯C语言）
- **交互方式**：Telegram机器人
- **功能**：AI助手，支持工具调用，本地记忆
+#### 3. CMakeLists.txt 缺少源文件
+- **错误**：`llm_provider.c` 未加入编译列表，导致链接错误
+- **修复**：添加 `ota/ota_manager.c` 到 SRCS

-#### 当前LLM集成状态
-1. **支持的提供商**：
-   - Anthropic (Claude)
-   - OpenAI (GPT)
-   
-2. **配置方式**：
-   - 构建时配置：`main/mimi_secrets.h`
-   - 运行时配置：串口CLI命令，存储在NVS中
+#### 4. 头文件缺失（共 16 处）
+| 文件 | 缺失头文件 | 原因 |
+|------|-----------|------|
+| `cli/serial_cli.c` | `llm/llm_provider.h` | `llm_provider_set_api_key` |
+| `llm/llm_provider.c` | `esp_http_client.h` | `esp_http_client_set_header` |
+| `bus/message_bus.c` | `freertos/FreeRTOS.h`, `freertos/queue.h` | `xQueueCreate`, `QueueHandle_t` |
+| `wifi/wifi_manager.c` | `esp_event.h` | `esp_event_handler_instance_register` |
+| `wifi/wifi_manager.c` | `freertos/FreeRTOS.h`, `freertos/task.h`, `freertos/event_groups.h` | `xEventGroupCreate`, `vTaskDelay` |
+| `ota/ota_manager.c` | `esp_system.h` | `esp_restart` |
+| `channels/telegram/telegram_bot.c` | `freertos/FreeRTOS.h`, `freertos/task.h` | `xTaskCreatePinnedToCore`, `vTaskDelay` |
+| `tools/tool_registry.c` | `<stdlib.h>` | `free()` |
+| `proxy/http_proxy.c` | `<sys/time.h>` | `struct timeval` |
+| `gateway/ws_server.c` | `<stdint.h>` | `uint8_t` |

-3. **关键代码文件**：
-   - `main/llm/llm_proxy.c`：LLM代理核心实现
-   - `main/llm/llm_proxy.h`：LLM代理头文件
-   - `main/mimi_config.h`：全局配置定义
-   - `main/cli/serial_cli.c`：命令行界面
+### ESP-IDF v6.0 API 兼容性验证

-4. **提供商检测机制**：
-   - `provider_is_openai()`函数检查是否为OpenAI提供商
-   - 根据提供商选择不同的API URL、Host和Path
+以下 API 在 v6.0 中**仍然存在**，无需修改：
+- `esp_spiffs_info()` ✅
+- `esp_websocket_client_send_bin()` ✅
+- `esp_tls_set_conn_sockfd()` / `esp_tls_set_conn_state()` ✅
+- `esp_console_new_repl_uart()` / `esp_console_new_repl_usb_serial_jtag()` ✅
+- `esp_https_ota()` + `esp_https_ota_config_t` ✅
+- `esp_wifi_set_config()` ✅

-### 国内大模型厂商API兼容性调研
+### 烧录说明

-#### 硅基流动 (SiliconFlow)
- **API兼容性**：OpenAI兼容模式
- **Base URL**：`https://api.siliconflow.cn/v1`
- **特点**：
-  - 提供100+高性能大模型
-  - 新用户注册送免费额度
-  - 价格比OpenAI官方便宜80%+
-  - 支持OpenClaw等工具集成
+ESP32-S3 使用 **USB 口**（内置 USB Serial/JTAG 控制器）烧录：
+```powershell
+idf.py -p COMx flash monitor
+```
+- 插 USB 口（标记为 `USB`），不是 UART 口
+- 如遇连接失败，按住 BOOT 键再插线进入下载模式

-#### 火山方舟 (字节跳动豆包模型)
- **API兼容性**：兼容OpenAI SDK
- **Base URL**：`https://ark.cn-beijing.volces.com/api/v3`
- **特点**：
-  - 豆包大模型系列
-  - 新用户首次开通可享受50万token免费试用
-  - 支持函数调用、工具调用等高级功能
+---

-### 技术实现分析
+## 讨论：增加国内大模型厂商接入

-#### 当前架构特点
-1. **提供商抽象**：
-   - 使用`s_provider`变量存储提供商名称
-   - 通过`provider_is_openai()`函数区分提供商
-   - 根据提供商选择不同的API配置
+**日期**：2026-03-31  
+**目标**：为 MimiClaw 增加硅基流动和火山方舟（豆包模型）接入

-2. **API调用流程**：
-   - 构建请求体
-   - 设置请求头（根据提供商不同）
-   - 发送HTTP请求
-   - 解析响应（根据提供商不同）
+### 项目现状
+- 当前支持：Anthropic (Claude)、OpenAI (GPT)
+- 运行平台：ESP32-S3，纯 C 语言
+- 交互方式：Telegram 机器人

-3. **工具调用支持**：
-   - 支持Anthropic的tool_use格式
-   - 支持OpenAI的function calling格式
-   - 有格式转换函数`convert_tools_openai()`
+### 国内厂商 API 兼容性
+- **硅基流动**：OpenAI 兼容，Base URL `https://api.siliconflow.cn/v1`
+- **火山方舟**：OpenAI 兼容，Base URL `https://ark.cn-beijing.volces.com/api/v3`

-#### 实现方案讨论
-由于硅基流动和火山方舟都提供OpenAI兼容的API，理论上可以复用现有的OpenAI集成代码，只需要：
-1. 修改Base URL
-2. 可能需要调整认证方式
-3. 可能需要处理特定的模型名称
+### 实现方案
+由于两者都提供 OpenAI 兼容 API，可复用现有 OpenAI 集成代码，只需：
+1. 修改 Base URL
+2. 调整认证方式（Bearer Token）
+3. 处理模型名称规范

-## 待解决问题
+### 待解决问题
+1. 认证方式差异确认
+2. 模型名称规范
+3. 工具调用格式兼容性验证

-1. **认证方式差异**：
-   - 硅基流动：使用API Key
-   - 火山方舟：可能使用不同的认证方式
+---

-2. **模型名称规范**：
-   - 需要了解具体的模型ID格式
-   - 例如：硅基流动的`deepseek-ai/DeepSeek-V3`，火山方舟的豆包模型名称
+## 讨论：时区设置功能

-3. **功能支持差异**：
-   - 工具调用格式是否完全兼容
-   - 上下文长度限制
-   - 特殊功能支持情况
+**日期**：2026-04-01  
+**目标**：为 MimiClaw 添加可配置的时区支持，默认改为中国时区

-## 下一步计划
+### 背景
+- 原默认时区为 `PST8PDT,M3.2.0,M11.1.0`（太平洋时间）
+- 需要支持用户自定义时区，特别是中国用户（UTC+8）
+- 交互方式从 Telegram 改为飞书

-基于讨论，制定了以下实施计划：
+### 实现方案

-### 阶段一：准备与设计
-1. 详细调研硅基流动和火山方舟的API文档
-2. 确定具体的实现方案
-3. 设计配置结构和命令行接口
+#### 存储方式
+- **NVS 存储**：使用 `system_config` namespace，key 为 `timezone`
+- **Build-time 默认值**：`MIMI_TIMEZONE` 改为 `"CST-8"`
+- **优先级**：NVS 值 > Build-time 值

-### 阶段二：核心实现
-1. 修改LLM代理以支持新的提供商
-2. 添加配置管理功能
-3. 更新命令行界面
+#### CLI 命令
+```
+set_timezone <TZ>      # 例如: set_timezone CST-8 或 set_timezone Asia/Shanghai
+timezone_show          # 显示当前时区配置和本地时间
+```

-### 阶段三：测试与优化
-1. 功能测试
-2. 性能优化
-3. 文档更新
+#### LLM 工具
+- 新增 `set_timezone` 工具，LLM 可通过对话设置时区
+- 支持 POSIX 格式（`CST-8`）和城市名（`Asia/Shanghai`）
+- 内置 18 个城市名映射表

-## 相关资源
+### 改动文件
+| 文件 | 操作 |
+|------|------|
+| `main/mimi_config.h` | 默认时区改为 `CST-8`，添加 `MIMI_NVS_KEY_TIMEZONE` |
+| `main/tools/tool_set_timezone.h` | **新建** |
+| `main/tools/tool_set_timezone.c` | **新建** |
+| `main/tools/tool_registry.c` | include 新头文件 + 注册工具 |
+| `main/cli/serial_cli.c` | 添加 `set_timezone` / `timezone_show` 命令 |
+| `main/CMakeLists.txt` | 添加 `tool_set_timezone.c` 到 SRCS |

-### 项目文件
- `main/llm/llm_proxy.c`：LLM代理实现
- `main/llm/llm_proxy.h`：LLM代理头文件
- `main/mimi_config.h`：配置定义
- `main/cli/serial_cli.c`：命令行界面
-
-### 外部文档
- 硅基流动OpenClaw集成文档
- 火山方舟兼容OpenAI SDK文档
- ESP32-S3开发文档
-
-## 技术要点总结
-
-1. **复用现有架构**：可以充分利用现有的OpenAI集成代码
-2. **提供商扩展**：需要扩展提供商检测和配置机制
-3. **配置管理**：需要支持新的API密钥和Base URL配置
-4. **兼容性处理**：可能需要处理API响应格式的细微差异
-
-## 风险与挑战
-
-1. **API兼容性风险**：虽然声称兼容，但可能存在细微差异
-2. **内存限制**：ESP32-S3内存有限，需要确保新功能不会导致内存不足
-3. **网络稳定性**：国内网络环境可能影响API调用稳定性
-4. **认证安全性**：需要确保API密钥的安全存储和传输
+### 支持的时区格式
+- POSIX: `CST-8`, `JST-9`, `EST5EDT,M3.2.0,M11.1.0`, `UTC0`
+- 城市名: Asia/Shanghai, Asia/Tokyo, America/New_York 等 18 个预设