feat: move default db to config dir, add skill/mcp enable toggles

- Store default SQLite database at <config_dir>/data/picobot.db instead of
  the workspace, keeping session data independent of the workspace; the
  reload equivalence check and docs follow the new default
- Add per-skill enable/disable persisted in <config_dir>/skills_state.json;
  skills default to enabled, disabled skills are excluded from prompts,
  listings, and get_skill at load time
- Add mcp.servers[].enabled (default true); disabled servers are skipped
  at activation and by health checks
- WebUI Tools page: switches for Skills and MCP servers, plus a concrete
  MCP tool list with connection status and errors
- Add PUT /api/skills/{name} API and expose enabled/tool details in the
  skills/status APIs
- Bump version to 1.15.0

AGENTS.md

@@ -108,6 +108,8 @@ Scheduler → SessionManager scheduled execution → AgentLoop → Scheduler del
 - **Tools** are executed by `AgentLoop`; every invocation is normalized to `ToolOutput` and passes through `ToolOutputProcessor`. Plain `ToolResult` implementations use the default conversion, while artifact-producing tools declare model/user audience explicitly; model capability checks, final-reply attachment, channel delivery, and Provider serialization stay outside tools
 - **Delegated tool access**: a named Agent's tool set is decided solely by its definition file (admin-authored). `delegate`, `emit_signal`, `get_skill` and `agent_task` are runtime-injected and must never be declared in `tools` (`get_skill` is the scoped-skill switch); `allowed_tools` can only narrow the definition, never expand it
 - **No foreground wait tool**: Agents wait for asynchronous work by ending the Turn and letting queued completions/signals open a continuation Turn, or by polling status tools; there is no model-callable `sleep`/wait tool. Cancelling a Turn must still normalize active tool blocks to `Cancelled`
+- **Skill enable/disable**: skills default to enabled; user-disabled skill names are persisted in `<config_dir>/skills_state.json` (skill files are never modified), and disabled skills are excluded from prompts, listings, and `get_skill` at load time
+- **MCP enable/disable**: `mcp.servers[].enabled` defaults to true; disabled servers are skipped at activation (no connection attempt) and by health checks
 - **Stateful tools** receive `ToolExecutionContext`; browser calls without `persistent_id` map each PicoBot dialog to an opaque transient agent-browser session. For long-running work an Agent may autonomously create a persistent identity and must pass its validated ID on every related action; the same ID shares one agent-browser session and serialization gate across dialogs, while different IDs have independent sessions/gates. `browser_profiles` may create IDs, persist bounded semantic labels, list, or delete only validated IDs beneath the configured profile root. Do not introduce a global persistence mode switch, a default persistent ID, automatic per-dialog persistent Profiles, Fantoccini, ChromeDriver, WebDriver, model-controlled raw agent-browser session IDs, or arbitrary Profile paths
 - **Health diagnostics** are read-only and share `HealthService` across `picobot health`, the `health` tool, and `/health`; checks must not install/fix dependencies, call Provider APIs, or expose secrets
 
@@ -131,7 +133,7 @@ Scheduler → SessionManager scheduled execution → AgentLoop → Scheduler del
 ### Key Constraints
 
 - Gateway **changes working directory** to workspace in `GatewayState::new` (`src/gateway/mod.rs`)
-- Session/message persistence uses SQLite via `sqlx`; DB stored in workspace as `picobot.db` by default
+- Session/message persistence uses SQLite via `sqlx`; DB stored in `<config_dir>/data/picobot.db` by default (`config_dir` is `~/.picobot`), independent of the workspace
 - `ChannelManager` owns the `MessageBus` and all channel instances
 - `OutboundDispatcher` routes outbound messages to the correct channel via `ChannelManager`
 - Layered config/workspace `.env` loading uses `unsafe { env::set_var(...) }` during single-threaded startup — don't move it after Gateway tasks are spawned or refactor it without understanding process-wide side effects

Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "picobot"
-version = "1.13.1"
+version = "1.15.0"
 edition = "2024"
 
 [dependencies]

README.md

@@ -90,7 +90,7 @@ Gateway 首次启动时会把模板释放到 `~/.picobot/config.example.json`。
 cargo run -- gateway
 ```
 
-默认监听 `127.0.0.1:19876`。Gateway 启动后会把进程工作目录切到 `workspace_dir`，默认 SQLite 数据库也会写到该 workspace 下的 `picobot.db`。
+默认监听 `127.0.0.1:19876`。Gateway 启动后会把进程工作目录切到 `workspace_dir`，默认 SQLite 数据库写到配置目录（`~/.picobot`）`data/` 下的 `picobot.db`，与 workspace 相互独立。
 
 监听地址可通过配置文件或命令行覆盖。命令行参数优先于 `config.json`：
 

docs/ARCHITECTURE.md

@@ -212,7 +212,7 @@ SessionManager 负责组装会话上下文：系统提示、Skills、召回的 K
 
 ## 6. 持久化
 
-`Storage` 使用 SQLx + SQLite，默认数据库为 `{workspace_dir}/picobot.db`。连接启用：
+`Storage` 使用 SQLx + SQLite，默认数据库为 `{config_dir}/data/picobot.db`（`config_dir` 默认 `~/.picobot`），与 workspace 相互独立。连接启用：
 
 - WAL journal mode。
 - foreign keys。

docs/CONFIG_HOT_RELOAD_DESIGN.md

@@ -322,7 +322,7 @@ WebUI `PUT /api/config` 只负责原子写文件、恢复被掩码的 secret 并
 - 候选配置允许 Provider/模型等运行时字段变化。
 - 相对 `workspace_dir` 按启动 cwd 正确解析。
 - workspace 变化被拒绝且返回明确错误。
-- `None` 与 `./picobot.db` 指向同一有效数据库路径时允许重载。
+- `None` 与显式指向同一有效数据库路径（默认 `{config_dir}/data/picobot.db`）时允许重载。
 - admission 关闭后拒绝新工作，并等待现有 activity guard 释放。
 - command output 在 dispatcher 明确确认投递前不会释放处理任务。
 - 真实子进程 Gateway 可完成 generation 2 切换；无效候选返回 400 且旧代 `/health` 继续可用。

resources/skills/about-picobot/references/architecture.md

@@ -59,7 +59,7 @@ Scheduler → SessionManager.handle_cron_message → AgentLoop → send_message
 ## 关键约束
 
 - Gateway 启动时切换到 workspace 目录
-- SQLite 数据在 `{workspace}/picobot.db`
+- SQLite 数据在 `{config_dir}/data/picobot.db`（`config_dir` 默认 `~/.picobot`），与 workspace 相互独立
 - ChannelManager 持有 MessageBus 和所有 channel
 - OutboundDispatcher 通过 ChannelManager 路由出站消息
 - 配置目录 `.env` 与 workspace `.env` 仅在单线程启动阶段分层加载，并使用 `unsafe { env::set_var(...) }` 写入进程环境；优先级为既有进程环境 > workspace > 配置目录

resources/skills/about-picobot/references/config.md

@@ -80,7 +80,7 @@ Gateway WebUI 的“配置”页可以编辑实际加载的配置文件。读取
 | `port` | int | 19876 | 监听端口 |
 | `require_pairing` | bool | true | 是否要求 WebUI 与 CLI 设备先使用一次性代码配对 |
 | `session_ttl_hours` | int | - | 兼容/预留字段；当前没有会话 TTL 清理循环 |
-| `session_db_path` | string | - | SQLite 数据库路径，默认在 workspace 下 |
+| `session_db_path` | string | - | SQLite 数据库路径，默认在配置目录 `data/` 下 |
 | `cleanup_interval_minutes` | int | - | 兼容/预留字段；当前没有按此间隔运行的 session 清理任务 |
 | `scheduler` | object | - | 调度器配置 |
 
@@ -139,6 +139,7 @@ MCP 服务器单条配置:
 | 字段 | 说明 |
 |------|------|
 | `name` | 服务器名称 |
+| `enabled` | 是否启用，默认 true；关闭后启动/重载时不连接该服务器 |
 | `transport` | 传输方式: `stdio`、`sse`、`streamable-http` |
 | `command` | 启动命令（stdio 模式） |
 | `args` | 命令参数 |

resources/skills/about-picobot/references/db-schema.md

@@ -1,6 +1,6 @@
 # PicoBot 数据库表结构
 
-数据库为 SQLite，默认位于 workspace 下的 `picobot.db`。
+数据库为 SQLite，默认位于配置目录（`~/.picobot`）`data/` 下的 `picobot.db`，与 workspace 相互独立。
 
 连接启用 WAL、`synchronous=NORMAL`、foreign keys、5 秒 busy timeout，连接池最多 8 个连接。当前 `PRAGMA user_version=8`；启动时会在事务内补齐旧库字段和索引，遇到比程序更新的 schema version 会拒绝启动。
 

resources/skills/about-picobot/references/faq.md

@@ -34,7 +34,11 @@ docker compose exec picobot picobot pair --gateway-url http://127.0.0.1:19876
 
 ## Q: 数据库文件在哪里？
 
-默认 `{workspace}/picobot.db`，workspace 默认 `~/.picobot/workspace/`。
+默认 `{config_dir}/data/picobot.db`，`config_dir` 默认 `~/.picobot`，与 workspace 相互独立。
+
+## Q: 如何禁用某个 skill 或 MCP 服务器？
+
+Skill 安装后默认启用，可在 WebUI「工具 → Skills」页用开关禁用；禁用状态记录在 `~/.picobot/skills_state.json`，被禁用的 skill 不再进入提示词、列表和 `get_skill`。MCP 服务器在配置 `mcp.servers[].enabled`（默认 true）中控制，可在 WebUI「工具 → MCP」页开关；关闭后下次启动/重载时不连接该服务器。
 
 ## Q: 如何查看历史会话？
 

src/config/mod.rs

@@ -17,6 +17,13 @@ pub fn get_default_workspace_dir() -> PathBuf {
     get_user_config_dir().join("workspace")
 }
 
+/// Get the default session database path (`<config_dir>/data/picobot.db`).
+/// Kept under the user config directory rather than the workspace so session
+/// data is independent of the workspace directory.
+pub fn get_default_db_path() -> PathBuf {
+    get_user_config_dir().join("data").join("picobot.db")
+}
+
 /// Expand ~ in path to user home directory
 pub fn expand_path(path: &str) -> PathBuf {
     if let Some(path) = path.strip_prefix("~/") {
@@ -528,6 +535,8 @@ impl Default for McpConfig {
 #[derive(Debug, Clone, Deserialize, Serialize)]
 pub struct McpServerConfig {
     pub name: String,
+    #[serde(default = "default_true")]
+    pub enabled: bool,
     #[serde(default = "default_mcp_transport")]
     pub transport: McpTransport,
     #[serde(default)]

src/gateway/http.rs

@@ -791,8 +791,17 @@ pub async fn get_status(State(state): State<Arc<GatewayState>>) -> Result<Json<V
         .map(|status| {
             json!({
                 "name": status.name,
+                "transport": status.transport,
                 "connected": status.connected,
-                "tools": status.tools.len(),
+                "error": status.error,
+                "tools": status
+                    .tools
+                    .iter()
+                    .map(|tool| json!({
+                        "name": tool.name,
+                        "description": tool.description,
+                    }))
+                    .collect::<Vec<_>>(),
             })
         })
         .collect::<Vec<_>>();
@@ -1129,6 +1138,44 @@ pub async fn get_skills(State(state): State<Arc<GatewayState>>) -> Result<Json<V
                 "name": s.name,
                 "description": s.description,
                 "always": s.always,
+                "enabled": loader.is_enabled(&s.name),
+                "source": loader.source_of(s.path.as_deref()),
+            })
+        })
+        .collect();
+    Ok(Json(json!({ "skills": skills })))
+}
+
+#[derive(Deserialize)]
+pub struct SkillEnableUpdate {
+    enabled: bool,
+}
+
+/// Enable or disable a skill. The change is persisted to the skills state
+/// file and takes effect immediately (disabled skills are excluded from
+/// prompts, listings, and `get_skill`).
+pub async fn put_skill_enabled(
+    State(state): State<Arc<GatewayState>>,
+    Path(name): Path<String>,
+    Json(update): Json<SkillEnableUpdate>,
+) -> Result<Json<Value>, ApiError> {
+    let loader = state.session_manager.skills_loader();
+    let known = loader.get_loaded_skills().iter().any(|s| s.name == name);
+    if !known {
+        return Err(ApiError::not_found(format!("skill {name} not found")));
+    }
+    loader
+        .set_enabled(&name, update.enabled)
+        .map_err(ApiError::bad_request)?;
+    let skills: Vec<Value> = loader
+        .get_loaded_skills()
+        .iter()
+        .map(|s| {
+            json!({
+                "name": s.name,
+                "description": s.description,
+                "always": s.always,
+                "enabled": loader.is_enabled(&s.name),
                 "source": loader.source_of(s.path.as_deref()),
             })
         })

src/gateway/mod.rs

@@ -123,8 +123,17 @@ impl GatewayState {
         let db_path = if let Some(ref path) = config.gateway.session_db_path {
             std::path::PathBuf::from(path)
         } else {
-            workspace_path.join("picobot.db")
+            crate::config::get_default_db_path()
         };
+        if let Some(parent) = db_path.parent() {
+            std::fs::create_dir_all(parent).map_err(|e| {
+                format!(
+                    "Failed to create database directory {}: {}",
+                    parent.display(),
+                    e
+                )
+            })?;
+        }
         let storage = Arc::new(
             crate::storage::Storage::new(&db_path)
                 .await
@@ -683,6 +692,10 @@ fn build_router(state: Arc<GatewayState>) -> Router {
         .route("/api/status", routing::get(http::get_status))
         .route("/api/tools", routing::get(http::get_tools))
         .route("/api/skills", routing::get(http::get_skills))
+        .route(
+            "/api/skills/{name}",
+            routing::put(http::put_skill_enabled),
+        )
         .route("/api/jobs", routing::get(http::get_jobs))
         .route("/api/jobs/{id}/runs", routing::get(http::get_job_runs))
         .route(

src/gateway/reload.rs

@@ -319,7 +319,7 @@ fn effective_db_path(config: &Config, workspace: &Path) -> PathBuf {
         .session_db_path
         .as_deref()
         .map(crate::config::expand_path)
-        .unwrap_or_else(|| workspace.join("picobot.db"));
+        .unwrap_or_else(crate::config::get_default_db_path);
     let path = if path.is_relative() {
         workspace.join(path)
     } else {
@@ -395,18 +395,22 @@ mod tests {
     }
 
     #[test]
-    fn equivalent_default_database_paths_are_reloadable() {
+    fn default_database_path_equivalence_is_reloadable() {
         let temp = tempfile::tempdir().unwrap();
         let workspace = temp.path().join("workspace");
         std::fs::create_dir_all(&workspace).unwrap();
-        std::fs::write(workspace.join("picobot.db"), []).unwrap();
         let config_path = temp.path().join("config.json");
         let current: Config = serde_json::from_str(&config_json(&workspace, "old-model")).unwrap();
+
+        // The implicit default (no session_db_path) is the config-dir data
+        // path; an explicit path resolving to the same file stays reloadable.
+        let default_db = crate::config::get_default_db_path();
         let mut candidate: serde_json::Value =
             serde_json::from_str(&config_json(&workspace, "new-model")).unwrap();
-        candidate["gateway"] = serde_json::json!({ "session_db_path": "./picobot.db" });
+        candidate["gateway"] = serde_json::json!({
+            "session_db_path": default_db.to_string_lossy()
+        });
         std::fs::write(&config_path, serde_json::to_vec(&candidate).unwrap()).unwrap();
-
         load_candidate(
             &config_path,
             &HashMap::new(),
@@ -415,6 +419,28 @@ mod tests {
             &workspace,
         )
         .unwrap();
+
+        // A different explicit path (e.g. the old workspace location) must be
+        // rejected as restart-only to protect the shared database identity.
+        let mut candidate: serde_json::Value =
+            serde_json::from_str(&config_json(&workspace, "new-model")).unwrap();
+        candidate["gateway"] = serde_json::json!({
+            "session_db_path": workspace.join("picobot.db").to_string_lossy()
+        });
+        std::fs::write(&config_path, serde_json::to_vec(&candidate).unwrap()).unwrap();
+        let error = load_candidate(
+            &config_path,
+            &HashMap::new(),
+            temp.path(),
+            &current,
+            &workspace,
+        )
+        .unwrap_err();
+        assert!(
+            error
+                .to_string()
+                .contains("session_db_path cannot be reloaded")
+        );
     }
 
     #[tokio::test]

src/health.rs

@@ -145,6 +145,9 @@ impl HealthService {
         let mut seen = HashSet::new();
         let mut checks = Vec::new();
         for server in &self.config.mcp.servers {
+            if !server.enabled {
+                continue;
+            }
             if !matches!(server.transport, McpTransport::Stdio) {
                 continue;
             }

src/mcp/mod.rs

@@ -129,6 +129,14 @@ pub async fn connect_all(config: &McpConfig) -> Vec<ToolInfo> {
     let mut server_statuses = Vec::new();
 
     for server_config in &config.servers {
+        if !server_config.enabled {
+            tracing::info!(
+                server = %server_config.name,
+                "MCP server disabled by config, skipping"
+            );
+            continue;
+        }
+
         let transport_str = match server_config.transport {
             McpTransport::Stdio => "stdio",
             McpTransport::Sse => "sse",

src/skills/mod.rs

@@ -4,6 +4,7 @@ mod embedded {
     include!(concat!(env!("OUT_DIR"), "/embedded_skills.rs"));
 }
 
+use std::collections::HashSet;
 use std::path::{Path, PathBuf};
 use std::sync::{Arc, Mutex};
 use std::time::SystemTime;
@@ -28,9 +29,13 @@ struct SkillMarkdownMeta {
 #[derive(Clone)]
 struct SkillsState {
     loaded_skills: Vec<Skill>,
+    /// Skill names explicitly disabled by the user; everything else is
+    /// enabled by default.
+    disabled_skills: HashSet<String>,
     last_picobot_mtime: Option<SystemTime>,
     last_agent_mtime: Option<SystemTime>,
     last_workspace_mtime: Option<SystemTime>,
+    last_state_mtime: Option<SystemTime>,
     last_load_time: SystemTime,
 }
 
@@ -38,9 +43,11 @@ impl Default for SkillsState {
     fn default() -> Self {
         Self {
             loaded_skills: Vec::new(),
+            disabled_skills: HashSet::new(),
             last_picobot_mtime: None,
             last_agent_mtime: None,
             last_workspace_mtime: None,
+            last_state_mtime: None,
             last_load_time: SystemTime::now(),
         }
     }
@@ -52,6 +59,9 @@ pub struct SkillsLoader {
     picobot_skills_dir: PathBuf,
     agent_skills_dir: PathBuf,
     workspace_skills_dir: Option<PathBuf>,
+    /// Path of the JSON state file recording user-disabled skills
+    /// (`<config_dir>/skills_state.json`).
+    state_path: PathBuf,
     state: Arc<Mutex<SkillsState>>,
 }
 
@@ -60,6 +70,10 @@ impl SkillsLoader {
     pub fn new() -> Self {
         let home = dirs::home_dir().unwrap_or_else(|| PathBuf::from("."));
         let picobot_skills_dir = home.join(".picobot/skills");
+        let state_path = picobot_skills_dir
+            .parent()
+            .unwrap_or(home.as_path())
+            .join("skills_state.json");
 
         builtin::install_builtin_skills(&picobot_skills_dir);
 
@@ -67,16 +81,22 @@ impl SkillsLoader {
             picobot_skills_dir,
             agent_skills_dir: home.join(".agents/skills"),
             workspace_skills_dir: None,
+            state_path,
             state: Arc::new(Mutex::new(SkillsState::default())),
         }
     }
 
     #[cfg(test)]
     pub(crate) fn new_for_testing(picobot_dir: PathBuf, agent_dir: PathBuf) -> Self {
+        let state_path = picobot_dir
+            .parent()
+            .unwrap_or(picobot_dir.as_path())
+            .join("skills_state.json");
         Self {
             picobot_skills_dir: picobot_dir,
             agent_skills_dir: agent_dir,
             workspace_skills_dir: None,
+            state_path,
             state: Arc::new(Mutex::new(SkillsState::default())),
         }
     }
@@ -89,7 +109,9 @@ impl SkillsLoader {
     /// Load all skills from all directories and record modification times.
     /// Priority: workspace > ~/.picobot/skills > ~/.agents/skills.
     /// Same-name skills from higher-priority directories replace lower-priority ones.
+    /// User-disabled skills (see `set_enabled`) are excluded from the result.
     pub fn load_skills(&self) {
+        self.load_state();
         let mut state = self.state.lock().unwrap();
         state.loaded_skills.clear();
 
@@ -170,6 +192,11 @@ impl SkillsLoader {
 
         state.last_load_time = SystemTime::now();
 
+        let disabled_skills = state.disabled_skills.clone();
+        state
+            .loaded_skills
+            .retain(|skill| !disabled_skills.contains(&skill.name));
+
         if state.loaded_skills.is_empty() {
             tracing::debug!("No skills found in any skills directory");
         } else {
@@ -209,7 +236,9 @@ impl SkillsLoader {
             false
         };
 
-        picobot_changed || agent_changed || workspace_changed
+        let state_changed = Self::get_file_mtime(&self.state_path) != state.last_state_mtime;
+
+        picobot_changed || agent_changed || workspace_changed || state_changed
     }
 
     /// Reload skills if changes are detected
@@ -248,6 +277,78 @@ impl SkillsLoader {
         max_mtime
     }
 
+    /// Get the modification time of a single file (missing file -> None).
+    fn get_file_mtime(path: &Path) -> Option<SystemTime> {
+        std::fs::metadata(path).and_then(|metadata| metadata.modified()).ok()
+    }
+
+    /// Read the disabled-skills state file into `state.disabled_skills`.
+    /// A missing or malformed file resets to "everything enabled".
+    fn load_state(&self) {
+        let mut state = self.state.lock().unwrap();
+        match std::fs::read_to_string(&self.state_path) {
+            Ok(content) => {
+                let mut disabled = HashSet::new();
+                if let Ok(value) = serde_json::from_str::<serde_json::Value>(&content)
+                    && let Some(items) = value.get("disabled").and_then(|v| v.as_array())
+                {
+                    disabled = items
+                        .iter()
+                        .filter_map(serde_json::Value::as_str)
+                        .map(str::to_string)
+                        .collect();
+                }
+                state.disabled_skills = disabled;
+            }
+            Err(_) => {
+                state.disabled_skills.clear();
+            }
+        }
+        state.last_state_mtime = Self::get_file_mtime(&self.state_path);
+    }
+
+    /// Persist the disabled-skills state atomically.
+    fn save_state(&self) -> Result<(), String> {
+        let mut disabled: Vec<String> = {
+            let state = self.state.lock().unwrap();
+            state.disabled_skills.iter().cloned().collect()
+        };
+        disabled.sort();
+        let content = serde_json::json!({ "disabled": disabled }).to_string();
+
+        let parent = self
+            .state_path
+            .parent()
+            .unwrap_or_else(|| Path::new("."));
+        std::fs::create_dir_all(parent).map_err(|e| format!("create state dir: {e}"))?;
+        let temp = parent.join(".skills_state.json.tmp");
+        std::fs::write(&temp, &content).map_err(|e| format!("write state: {e}"))?;
+        std::fs::rename(&temp, &self.state_path).map_err(|e| format!("rename state: {e}"))
+    }
+
+    /// Whether a skill is enabled. Skills are enabled by default; only names
+    /// explicitly disabled by the user return false.
+    pub fn is_enabled(&self, name: &str) -> bool {
+        let state = self.state.lock().unwrap();
+        !state.disabled_skills.contains(name)
+    }
+
+    /// Enable or disable a skill and persist the change. Disabled skills are
+    /// excluded from prompts, listings, and `get_skill`.
+    pub fn set_enabled(&self, name: &str, enabled: bool) -> Result<(), String> {
+        {
+            let mut state = self.state.lock().unwrap();
+            if enabled {
+                state.disabled_skills.remove(name);
+            } else {
+                state.disabled_skills.insert(name.to_string());
+            }
+        }
+        self.save_state()?;
+        self.load_skills();
+        Ok(())
+    }
+
     pub fn source_of(&self, path: Option<&Path>) -> &'static str {
         let Some(path) = path else {
             return "unknown";
@@ -654,4 +755,42 @@ This is the content.
             "other"
         );
     }
+
+    #[test]
+    fn test_set_enabled_persists_and_filters() {
+        let temp = tempfile::tempdir().unwrap();
+        let picobot_dir = temp.path().join("picobot");
+        let agent_dir = temp.path().join("agents");
+        for name in ["alpha", "beta"] {
+            let skill_dir = picobot_dir.join(name);
+            std::fs::create_dir_all(&skill_dir).unwrap();
+            std::fs::write(
+                skill_dir.join("SKILL.md"),
+                format!("---\nname: {name}\ndescription: {name}\n---\ncontent"),
+            )
+            .unwrap();
+        }
+
+        let loader = SkillsLoader::new_for_testing(picobot_dir.clone(), agent_dir.clone());
+        loader.load_skills();
+        assert_eq!(loader.get_loaded_skills().len(), 2);
+        assert!(loader.is_enabled("beta"));
+
+        loader.set_enabled("beta", false).unwrap();
+        let loaded = loader.get_loaded_skills();
+        assert_eq!(loaded.len(), 1);
+        assert_eq!(loaded[0].name, "alpha");
+        assert!(!loader.is_enabled("beta"));
+        assert!(loader.is_enabled("alpha"));
+
+        // State survives a fresh loader instance reading the same state file.
+        let loader2 = SkillsLoader::new_for_testing(picobot_dir, agent_dir);
+        loader2.load_skills();
+        assert_eq!(loader2.get_loaded_skills().len(), 1);
+        assert!(!loader2.is_enabled("beta"));
+
+        loader2.set_enabled("beta", true).unwrap();
+        assert_eq!(loader2.get_loaded_skills().len(), 2);
+        assert!(loader2.is_enabled("beta"));
+    }
 }

webui/package-lock.json

@@ -1,12 +1,12 @@
 {
   "name": "picobot-webui",
-  "version": "1.13.1",
+  "version": "1.15.0",
   "lockfileVersion": 3,
   "requires": true,
   "packages": {
     "": {
       "name": "picobot-webui",
-      "version": "1.13.1",
+      "version": "1.15.0",
       "dependencies": {
         "bits-ui": "^2.0.0",
         "dompurify": "^3.4.12",

webui/package.json

@@ -1,7 +1,7 @@
 {
   "name": "picobot-webui",
   "private": true,
-  "version": "1.13.1",
+  "version": "1.15.0",
   "type": "module",
   "engines": {
     "node": ">=20"

webui/src/App.svelte

@@ -152,7 +152,7 @@
       {:else if current === "tasks"}<TasksPage />
       {:else if current === "settings"}<SettingsPage notify={(text, error) => toast.show(text, error)} />
       {:else if current === "overview"}<OverviewPage />
-      {:else if current === "tools"}<ToolsPage />
+      {:else if current === "tools"}<ToolsPage notify={(text, error) => toast.show(text, error)} />
       {:else if current === "agents"}<AgentsPage />
       {:else}<div class="empty-card">即将上线</div>{/if}
     </main>

webui/src/pages/ToolsPage.svelte

@@ -4,11 +4,14 @@
   import { api } from "../lib/api.js";
   import Icon from "../lib/Icon.svelte";
 
+  let { notify } = $props();
   let tab = $state("tools");
   let tools = $state([]);
   let skills = $state([]);
   let servers = $state([]);
+  let config = $state(null);
   let loading = $state(true);
+  let saving = $state(false);
   let error = $state("");
   let query = $state("");
   let filter = $state("all");
@@ -40,6 +43,28 @@
 
   const connected = $derived(servers.filter((server) => server.connected).length);
 
+  // Merge MCP servers from the loaded config (source of truth, includes
+  // disabled servers) with live connection status by name.
+  const mcpList = $derived.by(() => {
+    const byName = new Map(servers.map((server) => [server.name, server]));
+    return (config?.mcp?.servers || []).map((server) => {
+      const status = byName.get(server.name);
+      return {
+        name: server.name,
+        transport: server.transport || "stdio",
+        enabled: server.enabled !== false,
+        connected: status?.connected ?? false,
+        error: status?.error || "",
+        tools: status?.tools || []
+      };
+    });
+  });
+
+  const mcpConnected = $derived(mcpList.filter((server) => server.connected).length);
+  const mcpToolCount = $derived(
+    mcpList.reduce((sum, server) => sum + (server.tools?.length || 0), 0)
+  );
+
   function schema(tool) {
     return tool.parameters_schema ? JSON.stringify(tool.parameters_schema, null, 2) : "{}";
   }
@@ -48,14 +73,16 @@
     loading = true;
     error = "";
     try {
-      const [toolRes, skillRes, status] = await Promise.all([
+      const [toolRes, skillRes, status, cfg] = await Promise.all([
         api("/api/tools"),
         api("/api/skills"),
-        api("/api/status")
+        api("/api/status"),
+        api("/api/config")
       ]);
       tools = toolRes.tools || [];
       skills = skillRes.skills || [];
       servers = status.mcp || [];
+      config = cfg.config || null;
     } catch (caught) {
       error = caught.message;
     } finally {
@@ -63,6 +90,46 @@
     }
   }
 
+  async function toggleSkill(skill) {
+    saving = true;
+    try {
+      const result = await api(`/api/skills/${encodeURIComponent(skill.name)}`, {
+        method: "PUT",
+        body: JSON.stringify({ enabled: !skill.enabled })
+      });
+      skills = result.skills || skills;
+      notify(skill.enabled ? `已禁用 Skill「${skill.name}」` : `已启用 Skill「${skill.name}」`);
+    } catch (caught) {
+      notify(caught.message, true);
+    } finally {
+      saving = false;
+    }
+  }
+
+  async function toggleMcp(server) {
+    if (!config?.mcp?.servers) return;
+    saving = true;
+    try {
+      const next = JSON.parse(JSON.stringify(config));
+      const target = next.mcp.servers.find((item) => item.name === server.name);
+      if (!target) return;
+      target.enabled = !server.enabled;
+      const result = await api("/api/config", { method: "PUT", body: JSON.stringify({ config: next }) });
+      config = result.config || next;
+      await api("/api/config/reload", { method: "POST" });
+      notify(
+        server.enabled
+          ? `已禁用 MCP「${server.name}」，重载后生效`
+          : `已启用 MCP「${server.name}」，重载后生效`
+      );
+      setTimeout(load, 1500);
+    } catch (caught) {
+      notify(caught.message, true);
+    } finally {
+      saving = false;
+    }
+  }
+
   function changeTab(value) {
     tab = value;
   }
@@ -137,7 +204,18 @@
               <p>{skill.description}</p>
               <div class="meta"><span>{skill.source}</span></div>
             </div>
-            {#if skill.always}<span class="badge ok">always</span>{/if}
+            <div class="card-actions">
+              {#if skill.always}<span class="badge ok">always</span>{/if}
+              <button
+                class="switch"
+                data-state={skill.enabled ? "checked" : "unchecked"}
+                aria-label={skill.enabled ? `禁用 ${skill.name}` : `启用 ${skill.name}`}
+                onclick={() => toggleSkill(skill)}
+                disabled={saving}
+              >
+                <span class="switch-thumb" data-state={skill.enabled ? "checked" : "unchecked"}></span>
+              </button>
+            </div>
           </div>
         </article>
       {:else}
@@ -146,20 +224,56 @@
     </div>
   {:else}
     <div class="metrics">
-      <div class="metric"><b>{servers.length}</b><small>MCP 服务器</small></div>
-      <div class="metric"><b>{connected}</b><small>已连接</small></div>
-      <div class="metric"><b>{servers.reduce((sum, server) => sum + (server.tools || 0), 0)}</b><small>工具总数</small></div>
+      <div class="metric"><b>{mcpList.length}</b><small>MCP 服务器</small></div>
+      <div class="metric"><b>{mcpConnected}</b><small>已连接</small></div>
+      <div class="metric"><b>{mcpToolCount}</b><small>工具总数</small></div>
     </div>
     <div class="cards">
-      {#each servers as server (server.name)}
-        <article class="card">
+      {#each mcpList as server (server.name)}
+        <article class="card" class:disabled={!server.enabled}>
           <div class="card-row">
             <div>
               <h3 class="mono">{server.name}</h3>
-              <div class="meta"><span>{server.tools || 0} 个工具</span></div>
+              <div class="meta">
+                <span>{server.transport}</span>
+                <span>{server.tools?.length || 0} 个工具</span>
+              </div>
+            </div>
+            <div class="card-actions">
+              {#if !server.enabled}
+                <span class="badge fail">已禁用</span>
+              {:else if server.connected}
+                <span class="badge ok">已连接</span>
+              {:else}
+                <span class="badge fail">未连接</span>
+              {/if}
+              <button
+                class="switch"
+                data-state={server.enabled ? "checked" : "unchecked"}
+                aria-label={server.enabled ? `禁用 ${server.name}` : `启用 ${server.name}`}
+                onclick={() => toggleMcp(server)}
+                disabled={saving}
+              >
+                <span class="switch-thumb" data-state={server.enabled ? "checked" : "unchecked"}></span>
+              </button>
             </div>
-            <span class="badge" class:ok={server.connected} class:fail={!server.connected}>{server.connected ? "已连接" : "未连接"}</span>
           </div>
+          {#if server.error}<div class="mcp-error">{server.error}</div>{/if}
+          {#if server.tools?.length}
+            <details class="schema-wrap">
+              <summary>{server.tools.length} 个工具</summary>
+              <ul class="mcp-tools">
+                {#each server.tools as tool (tool.name)}
+                  <li>
+                    <code>{tool.name}</code>
+                    {#if tool.description}<span>{tool.description}</span>{/if}
+                  </li>
+                {/each}
+              </ul>
+            </details>
+          {:else if server.enabled}
+            <p class="mcp-empty">连接后无可用工具</p>
+          {/if}
         </article>
       {:else}
         <div class="empty-card">暂无 MCP 服务器</div>
@@ -177,6 +291,14 @@
   .schema-wrap { margin-top: 12px; border-top: 1px solid var(--line); padding-top: 10px; }
   .schema-wrap summary { cursor: pointer; color: var(--muted); font-size: 12px; }
   .schema-wrap pre { max-height: 300px; margin: 8px 0 0; padding: 10px 11px; overflow: auto; border: 1px solid var(--line); border-radius: 8px; color: var(--text-soft); background: var(--code-bg); font-size: 12px; line-height: 1.6; white-space: pre-wrap; overflow-wrap: anywhere; }
+  .card-actions { display: flex; align-items: center; gap: 10px; }
+  .card.disabled { opacity: 0.65; }
+  .mcp-tools { display: grid; gap: 7px; margin: 10px 0 0; padding: 0; list-style: none; }
+  .mcp-tools li { display: flex; flex-direction: column; gap: 2px; padding: 8px 10px; border: 1px solid var(--line); border-radius: 8px; }
+  .mcp-tools code { font: 600 12px/1.5 var(--font-mono); color: var(--text); }
+  .mcp-tools span { font-size: 12px; color: var(--muted); line-height: 1.5; }
+  .mcp-error { margin-top: 10px; padding: 8px 10px; border-radius: 8px; background: var(--danger-soft); color: var(--danger); font-size: 12px; line-height: 1.5; word-break: break-all; }
+  .mcp-empty { margin: 10px 0 0; color: var(--muted); font-size: 12px; }
   @media (max-width: 800px) {
     .tool-grid { grid-template-columns: 1fr; }
   }