fix(terminal): escape paths for PowerShell and cmd.exe in Windows launcher

`cmd.exe` cannot set a UNC path (e.g. `\\wsl$\...`) as the current
directory via `cd /d`; it errors with "CMD does not support UNC paths
as current directories". Switch to `pushd` which temporarily maps the
UNC share to a drive letter.

Rename `build_windows_cd_command` → `build_windows_cwd_command` to
reflect the broader semantics. Extract `build_windows_cwd_command_str`
and `is_windows_unc_path` helpers for testability, and add unit tests
covering drive paths, UNC paths, and batch metacharacter escaping.

Also fix minor style issues: sort mod declarations alphabetically,
add missing EOF newline in lightweight.rs, add explicit type annotation
in streaming_responses test, and reformat tray menu builder chain.

src-tauri/src/commands/misc.rs

@@ -6,7 +6,7 @@ use crate::services::ProviderService;
 use once_cell::sync::Lazy;
 use regex::Regex;
 use std::collections::HashMap;
-use std::path::Path;
+use std::path::{Path, PathBuf};
 use std::str::FromStr;
 use tauri::AppHandle;
 use tauri::State;
@@ -720,8 +720,10 @@ pub async fn open_provider_terminal(
     state: State<'_, crate::store::AppState>,
     app: String,
     #[allow(non_snake_case)] providerId: String,
+    cwd: Option<String>,
 ) -> Result<bool, String> {
     let app_type = AppType::from_str(&app).map_err(|e| e.to_string())?;
+    let launch_cwd = resolve_launch_cwd(cwd)?;
 
     // 获取提供商配置
     let providers = ProviderService::list(state.inner(), app_type.clone())
@@ -736,7 +738,8 @@ pub async fn open_provider_terminal(
     let env_vars = extract_env_vars_from_config(config, &app_type);
 
     // 根据平台启动终端，传入提供商ID用于生成唯一的配置文件名
-    launch_terminal_with_env(env_vars, &providerId).map_err(|e| format!("启动终端失败: {e}"))?;
+    launch_terminal_with_env(env_vars, &providerId, launch_cwd.as_deref())
+        .map_err(|e| format!("启动终端失败: {e}"))?;
 
     Ok(true)
 }
@@ -791,11 +794,49 @@ fn extract_env_vars_from_config(
     env_vars
 }
 
+fn resolve_launch_cwd(cwd: Option<String>) -> Result<Option<PathBuf>, String> {
+    let Some(raw_path) = cwd.filter(|value| !value.trim().is_empty()) else {
+        return Ok(None);
+    };
+
+    if raw_path.contains('\n') || raw_path.contains('\r') {
+        return Err("目录路径包含非法换行符".to_string());
+    }
+
+    let path = Path::new(&raw_path);
+    if !path.exists() {
+        return Err(format!("目录不存在: {raw_path}"));
+    }
+
+    let resolved = std::fs::canonicalize(path).map_err(|e| format!("解析目录失败: {e}"))?;
+    if !resolved.is_dir() {
+        return Err(format!("选择的路径不是文件夹: {}", resolved.display()));
+    }
+
+    // Strip Windows extended-length prefix that canonicalize produces,
+    // as it can break batch scripts and other shell commands.
+    // Special-case \\?\UNC\server\share -> \\server\share for network/WSL paths.
+    #[cfg(target_os = "windows")]
+    let resolved = {
+        let s = resolved.to_string_lossy();
+        if let Some(unc) = s.strip_prefix(r"\\?\UNC\") {
+            PathBuf::from(format!(r"\\{unc}"))
+        } else if let Some(stripped) = s.strip_prefix(r"\\?\") {
+            PathBuf::from(stripped)
+        } else {
+            resolved
+        }
+    };
+
+    Ok(Some(resolved))
+}
+
 /// 创建临时配置文件并启动 claude 终端
 /// 使用 --settings 参数传入提供商特定的 API 配置
 fn launch_terminal_with_env(
     env_vars: Vec<(String, String)>,
     provider_id: &str,
+    cwd: Option<&Path>,
 ) -> Result<(), String> {
     let temp_dir = std::env::temp_dir();
     let config_file = temp_dir.join(format!(
@@ -809,19 +850,19 @@ fn launch_terminal_with_env(
 
     #[cfg(target_os = "macos")]
     {
-        launch_macos_terminal(&config_file)?;
+        launch_macos_terminal(&config_file, cwd)?;
         Ok(())
     }
 
     #[cfg(target_os = "linux")]
     {
-        launch_linux_terminal(&config_file)?;
+        launch_linux_terminal(&config_file, cwd)?;
         Ok(())
     }
 
     #[cfg(target_os = "windows")]
     {
-        launch_windows_terminal(&temp_dir, &config_file)?;
+        launch_windows_terminal(&temp_dir, &config_file, cwd)?;
         return Ok(());
     }
 
@@ -851,7 +892,7 @@ fn write_claude_config(
 
 /// macOS: 根据用户首选终端启动
 #[cfg(target_os = "macos")]
-fn launch_macos_terminal(config_file: &std::path::Path) -> Result<(), String> {
+fn launch_macos_terminal(config_file: &std::path::Path, cwd: Option<&Path>) -> Result<(), String> {
     use std::os::unix::fs::PermissionsExt;
 
     let preferred = crate::settings::get_preferred_terminal();
@@ -860,18 +901,21 @@ fn launch_macos_terminal(config_file: &std::path::Path) -> Result<(), String> {
     let temp_dir = std::env::temp_dir();
     let script_file = temp_dir.join(format!("cc_switch_launcher_{}.sh", std::process::id()));
     let config_path = config_file.to_string_lossy();
+    let cd_command = build_shell_cd_command(cwd);
 
     // Write the shell script to a temp file
     let script_content = format!(
         r#"#!/bin/bash
 trap 'rm -f "{config_path}" "{script_file}"' EXIT
+{cd_command}
 echo "Using provider-specific claude config:"
 echo "{config_path}"
 claude --settings "{config_path}"
 exec bash --norc --noprofile
 "#,
         config_path = config_path,
-        script_file = script_file.display()
+        script_file = script_file.display(),
+        cd_command = cd_command,
     );
 
     std::fs::write(&script_file, &script_content).map_err(|e| format!("写入启动脚本失败: {e}"))?;
@@ -1007,7 +1051,7 @@ fn launch_macos_open_app(
 
 /// Linux: 根据用户首选终端启动
 #[cfg(target_os = "linux")]
-fn launch_linux_terminal(config_file: &std::path::Path) -> Result<(), String> {
+fn launch_linux_terminal(config_file: &std::path::Path, cwd: Option<&Path>) -> Result<(), String> {
     use std::os::unix::fs::PermissionsExt;
     use std::process::Command;
 
@@ -1029,17 +1073,20 @@ fn launch_linux_terminal(config_file: &std::path::Path) -> Result<(), String> {
     let temp_dir = std::env::temp_dir();
     let script_file = temp_dir.join(format!("cc_switch_launcher_{}.sh", std::process::id()));
     let config_path = config_file.to_string_lossy();
+    let cd_command = build_shell_cd_command(cwd);
 
     let script_content = format!(
         r#"#!/bin/bash
 trap 'rm -f "{config_path}" "{script_file}"' EXIT
+{cd_command}
 echo "Using provider-specific claude config:"
 echo "{config_path}"
 claude --settings "{config_path}"
 exec bash --norc --noprofile
 "#,
         config_path = config_path,
-        script_file = script_file.display()
+        script_file = script_file.display(),
+        cd_command = cd_command,
     );
 
     std::fs::write(&script_file, &script_content).map_err(|e| format!("写入启动脚本失败: {e}"))?;
@@ -1118,28 +1165,35 @@ fn which_command(cmd: &str) -> bool {
 fn launch_windows_terminal(
     temp_dir: &std::path::Path,
     config_file: &std::path::Path,
+    cwd: Option<&Path>,
 ) -> Result<(), String> {
     let preferred = crate::settings::get_preferred_terminal();
     let terminal = preferred.as_deref().unwrap_or("cmd");
 
     let bat_file = temp_dir.join(format!("cc_switch_claude_{}.bat", std::process::id()));
-    let config_path_for_batch = config_file.to_string_lossy().replace('&', "^&");
+    let config_path_for_batch = escape_windows_batch_value(&config_file.to_string_lossy());
+    let cwd_command = build_windows_cwd_command(cwd);
 
     let content = format!(
         "@echo off
+{cwd_command}
 echo Using provider-specific claude config:
 echo {}
 claude --settings \"{}\"
 del \"{}\" >nul 2>&1
 del \"%~f0\" >nul 2>&1
 ",
-        config_path_for_batch, config_path_for_batch, config_path_for_batch
+        config_path_for_batch,
+        config_path_for_batch,
+        config_path_for_batch,
+        cwd_command = cwd_command,
     );
 
     std::fs::write(&bat_file, &content).map_err(|e| format!("写入批处理文件失败: {e}"))?;
 
     let bat_path = bat_file.to_string_lossy();
-    let ps_cmd = format!("& '{}'", bat_path);
+    let bat_path_for_cmd = build_windows_cmd_command_str(&bat_path);
+    let ps_cmd = format!("& '{}'", escape_powershell_single_quoted(&bat_path));
 
     // Try the preferred terminal first
     let result = match terminal {
@@ -1147,8 +1201,10 @@ del \"%~f0\" >nul 2>&1
             &["powershell", "-NoExit", "-Command", &ps_cmd],
             "PowerShell",
         ),
-        "wt" => run_windows_start_command(&["wt", "cmd", "/K", &bat_path], "Windows Terminal"),
-        _ => run_windows_start_command(&["cmd", "/K", &bat_path], "cmd"), // "cmd" or default
+        "wt" => {
+            run_windows_start_command(&["wt", "cmd", "/K", &bat_path_for_cmd], "Windows Terminal")
+        }
+        _ => run_windows_start_command(&["cmd", "/K", &bat_path_for_cmd], "cmd"), // "cmd" or default
     };
 
     // If preferred terminal fails and it's not the default, try cmd as fallback
@@ -1158,12 +1214,81 @@ del \"%~f0\" >nul 2>&1
             terminal,
             result.as_ref().err()
         );
-        return run_windows_start_command(&["cmd", "/K", &bat_path], "cmd");
+        return run_windows_start_command(&["cmd", "/K", &bat_path_for_cmd], "cmd");
     }
 
     result
 }
 
+fn build_shell_cd_command(cwd: Option<&Path>) -> String {
+    cwd.map(|dir| {
+        format!(
+            "cd {} || exit 1\n",
+            shell_single_quote(&dir.to_string_lossy())
+        )
+    })
+    .unwrap_or_default()
+}
+
+fn shell_single_quote(value: &str) -> String {
+    format!("'{}'", value.replace('\'', "'\"'\"'"))
+}
+
+#[cfg_attr(not(target_os = "windows"), allow(dead_code))]
+fn escape_powershell_single_quoted(value: &str) -> String {
+    value.replace('\'', "''")
+}
+
+#[cfg_attr(not(target_os = "windows"), allow(dead_code))]
+fn build_windows_cmd_command_str(path: &str) -> String {
+    // Avoid handing `cmd /K` a string that starts with a single quoted path:
+    // per cmd.exe parsing rules, those outer quotes may be stripped when the
+    // quoted text contains shell metacharacters. An explicit `call "..."` form
+    // keeps the command from starting with a quote while still protecting
+    // spaces and other special characters in the batch path.
+    format!("call \"{}\"", escape_windows_cmd_quoted_path(path))
+}
+
+#[cfg_attr(not(target_os = "windows"), allow(dead_code))]
+fn escape_windows_cmd_quoted_path(value: &str) -> String {
+    value.replace('%', "%%")
+}
+
+#[cfg_attr(not(target_os = "windows"), allow(dead_code))]
+fn is_windows_unc_path(path: &str) -> bool {
+    path.starts_with(r"\\")
+}
+
+#[cfg_attr(not(target_os = "windows"), allow(dead_code))]
+fn build_windows_cwd_command_str(path: &str) -> String {
+    let escaped = escape_windows_batch_value(path);
+
+    if is_windows_unc_path(path) {
+        // `cmd.exe` cannot make a UNC path current via `cd`; `pushd` maps it first.
+        format!("pushd \"{escaped}\" || exit /b 1\r\n")
+    } else {
+        format!("cd /d \"{escaped}\" || exit /b 1\r\n")
+    }
+}
+
+#[cfg(target_os = "windows")]
+fn build_windows_cwd_command(cwd: Option<&Path>) -> String {
+    cwd.map(|dir| build_windows_cwd_command_str(&dir.to_string_lossy()))
+        .unwrap_or_default()
+}
+
+#[cfg_attr(not(target_os = "windows"), allow(dead_code))]
+fn escape_windows_batch_value(value: &str) -> String {
+    value
+        .replace('^', "^^")
+        .replace('%', "%%")
+        .replace('&', "^&")
+        .replace('|', "^|")
+        .replace('<', "^<")
+        .replace('>', "^>")
+        .replace('(', "^(")
+        .replace(')', "^)")
+}
 /// Windows: Run a start command with common error handling
 #[cfg(target_os = "windows")]
 fn run_windows_start_command(args: &[&str], terminal_name: &str) -> Result<(), String> {
@@ -1338,4 +1463,76 @@ mod tests {
             ]
         );
     }
+
+    #[test]
+    fn resolve_launch_cwd_accepts_existing_directory() {
+        let resolved =
+            resolve_launch_cwd(Some(std::env::temp_dir().to_string_lossy().into_owned()))
+                .expect("temp dir should resolve")
+                .expect("temp dir should be present");
+
+        assert!(resolved.is_dir());
+    }
+
+    #[test]
+    fn resolve_launch_cwd_rejects_missing_directory() {
+        let unique = std::time::SystemTime::now()
+            .duration_since(std::time::UNIX_EPOCH)
+            .expect("clock should be after epoch")
+            .as_nanos();
+        let missing = std::env::temp_dir().join(format!("cc-switch-missing-{unique}"));
+
+        let error = resolve_launch_cwd(Some(missing.to_string_lossy().into_owned()))
+            .expect_err("missing directory should fail");
+
+        assert!(error.contains("目录不存在"));
+    }
+
+    #[test]
+    fn build_shell_cd_command_quotes_spaces_and_single_quotes() {
+        let command = build_shell_cd_command(Some(Path::new("/tmp/project O'Brien")));
+
+        assert_eq!(command, "cd '/tmp/project O'\"'\"'Brien' || exit 1\n");
+    }
+
+    #[test]
+    fn escape_powershell_single_quoted_doubles_embedded_quotes() {
+        let escaped = escape_powershell_single_quoted(r"C:\Users\O'Brien\AppData\Local\Temp");
+
+        assert_eq!(escaped, r"C:\Users\O''Brien\AppData\Local\Temp");
+    }
+
+    #[test]
+    fn build_windows_cmd_command_str_quotes_and_escapes_metacharacters() {
+        let command = build_windows_cmd_command_str(r"C:\Users\100%&(test)\cc switch.bat");
+
+        assert_eq!(command, "call \"C:\\Users\\100%%&(test)\\cc switch.bat\"");
+    }
+
+    #[test]
+    fn build_windows_cwd_command_str_uses_cd_for_drive_paths() {
+        let command = build_windows_cwd_command_str(r"C:\work\repo");
+
+        assert_eq!(command, "cd /d \"C:\\work\\repo\" || exit /b 1\r\n");
+    }
+
+    #[test]
+    fn build_windows_cwd_command_str_uses_pushd_for_unc_paths() {
+        let command = build_windows_cwd_command_str(r"\\wsl$\Ubuntu\home\coder\repo");
+
+        assert_eq!(
+            command,
+            "pushd \"\\\\wsl$\\Ubuntu\\home\\coder\\repo\" || exit /b 1\r\n"
+        );
+    }
+
+    #[test]
+    fn build_windows_cwd_command_str_escapes_batch_metacharacters() {
+        let command = build_windows_cwd_command_str(r"\\server\share\100%&(test)");
+
+        assert_eq!(
+            command,
+            "pushd \"\\\\server\\share\\100%%^&^(test^)\" || exit /b 1\r\n"
+        );
+    }
 }

src-tauri/src/commands/mod.rs

@@ -22,10 +22,10 @@ pub mod skill;
 mod stream_check;
 mod sync_support;
 
+mod lightweight;
 mod usage;
 mod webdav_sync;
 mod workspace;
-mod lightweight;
 
 pub use auth::*;
 pub use config::*;
@@ -48,7 +48,7 @@ pub use settings::*;
 pub use skill::*;
 pub use stream_check::*;
 
+pub use lightweight::*;
 pub use usage::*;
 pub use webdav_sync::*;
 pub use workspace::*;
-pub use lightweight::*;

src-tauri/src/lightweight.rs

@@ -87,4 +87,4 @@ pub fn exit_lightweight_mode(app: &tauri::AppHandle) -> Result<(), String> {
 
 pub fn is_lightweight_mode() -> bool {
     LIGHTWEIGHT_MODE.load(Ordering::Acquire)
-}
+}

src-tauri/src/proxy/providers/streaming_responses.rs

@@ -974,7 +974,9 @@ mod tests {
             "data: {\"type\":\"response.completed\",\"response\":{\"status\":\"completed\",\"usage\":{\"input_tokens\":5,\"output_tokens\":2}}}\n\n"
         );
 
-        let upstream = stream::iter(vec![Ok(Bytes::from(input.as_bytes().to_vec()))]);
+        let upstream = stream::iter(vec![Ok::<_, std::io::Error>(Bytes::from(
+            input.as_bytes().to_vec(),
+        ))]);
         let converted = create_anthropic_sse_stream_from_responses(upstream);
         let chunks: Vec<_> = converted.collect().await;
         let events: Vec<Value> = chunks

src-tauri/src/tray.rs

@@ -393,11 +393,10 @@ pub fn create_tray_menu(
         true,
         crate::lightweight::is_lightweight_mode(),
         None::<&str>,
-    ).map_err(|e| AppError::Message(format!("创建轻量模式菜单失败: {e}")))?;
+    )
+    .map_err(|e| AppError::Message(format!("创建轻量模式菜单失败: {e}")))?;
 
-    menu_builder = menu_builder
-        .item(&lightweight_item)
-        .separator();
+    menu_builder = menu_builder.item(&lightweight_item).separator();
 
     // 退出菜单（分隔符已在上面的 section 循环中添加）
     let quit_item = MenuItem::with_id(app, "quit", tray_texts.quit, true, None::<&str>)
@@ -472,10 +471,8 @@ pub fn handle_tray_menu_event(app: &tauri::AppHandle, event_id: &str) {
                 if let Err(e) = crate::lightweight::exit_lightweight_mode(app) {
                     log::error!("退出轻量模式失败: {e}");
                 }
-            } else {
-                if let Err(e) = crate::lightweight::enter_lightweight_mode(app) {
-                    log::error!("进入轻量模式失败: {e}");
-                }
+            } else if let Err(e) = crate::lightweight::enter_lightweight_mode(app) {
+                log::error!("进入轻量模式失败: {e}");
             }
         }
         "quit" => {

src/App.tsx

@@ -648,7 +648,14 @@ function App() {
 
   const handleOpenTerminal = async (provider: Provider) => {
     try {
-      await providersApi.openTerminal(provider.id, activeApp);
+      const selectedDir = await settingsApi.pickDirectory();
+      if (!selectedDir) {
+        return;
+      }
+
+      await providersApi.openTerminal(provider.id, activeApp, {
+        cwd: selectedDir,
+      });
       toast.success(
         t("provider.terminalOpened", {
           defaultValue: "终端已打开",

src/lib/api/providers.ts

@@ -21,6 +21,10 @@ export interface SwitchResult {
   warnings: string[];
 }
 
+export interface OpenTerminalOptions {
+  cwd?: string;
+}
+
 export const providersApi = {
   async getAll(appId: AppId): Promise<Record<string, Provider>> {
     return await invoke("get_providers", { app: appId });
@@ -83,8 +87,17 @@ export const providersApi = {
    * 任何提供商都可以打开终端，不受是否为当前激活提供商的限制
    * 终端会使用该提供商特定的 API 配置，不影响全局设置
    */
-  async openTerminal(providerId: string, appId: AppId): Promise<boolean> {
-    return await invoke("open_provider_terminal", { providerId, app: appId });
+  async openTerminal(
+    providerId: string,
+    appId: AppId,
+    options?: OpenTerminalOptions,
+  ): Promise<boolean> {
+    const { cwd } = options ?? {};
+    return await invoke("open_provider_terminal", {
+      providerId,
+      app: appId,
+      cwd,
+    });
   },
 
   /**

src/lib/api/settings.ts

@@ -47,6 +47,10 @@ export const settingsApi = {
     await invoke("open_config_folder", { app: appId });
   },
 
+  async pickDirectory(defaultPath?: string): Promise<string | null> {
+    return await invoke("pick_directory", { defaultPath });
+  },
+
   async selectConfigDirectory(defaultPath?: string): Promise<string | null> {
     return await invoke("pick_directory", { defaultPath });
   },