diff --git a/package-lock.json b/package-lock.json
index c697f98..21c5986 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -10,322 +10,26 @@
       "hasInstallScript": true,
       "license": "MIT",
       "dependencies": {
-        "@anthropic-ai/claude-agent-sdk": "^0.1.0",
+        "cross-spawn": "^7.0.6",
         "qrcode": "^1.5.4",
         "qrcode-terminal": "^0.12.0"
       },
       "devDependencies": {
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         "@types/node": "^22.0.0",
         "@types/qrcode": "^1.5.6",
         "@types/qrcode-terminal": "^0.12.0",
         "typescript": "^5.7.0"
       }
     },
-    "node_modules/@anthropic-ai/claude-agent-sdk": {
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-      "resolved": "https://registry.npmjs.org/@anthropic-ai/claude-agent-sdk/-/claude-agent-sdk-0.1.77.tgz",
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-      "license": "SEE LICENSE IN README.md",
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-        "node": ">=18.0.0"
-      },
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-      },
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-      }
-    },
-    "node_modules/@img/sharp-win32-x64": {
-      "version": "0.33.5",
-      "resolved": "https://registry.npmjs.org/@img/sharp-win32-x64/-/sharp-win32-x64-0.33.5.tgz",
-      "integrity": "sha512-MpY/o8/8kj+EcnxwvrP4aTJSWw/aZ7JIGR4aBeZkZw5B7/Jn+tY9/VNwtcoGmdT7GfggGIU4kygOMSbYnOrAbg==",
-      "cpu": [
-        "x64"
-      ],
-      "license": "Apache-2.0 AND LGPL-3.0-or-later",
-      "optional": true,
-      "os": [
-        "win32"
-      ],
-      "engines": {
-        "node": "^18.17.0 || ^20.3.0 || >=21.0.0"
-      },
-      "funding": {
-        "url": "https://opencollective.com/libvips"
+    "node_modules/@types/cross-spawn": {
+      "version": "6.0.6",
+      "resolved": "https://registry.npmjs.org/@types/cross-spawn/-/cross-spawn-6.0.6.tgz",
+      "integrity": "sha512-fXRhhUkG4H3TQk5dBhQ7m/JDdSNHKwR2BBia62lhwEIq9xGiQKLxd6LymNhn47SjXhsUEPmxi+PKw2OkW4LLjA==",
+      "dev": true,
+      "license": "MIT",
+      "dependencies": {
+        "@types/node": "*"
       }
     },
     "node_modules/@types/node": {
@@ -417,6 +121,20 @@
       "integrity": "sha512-dOy+3AuW3a2wNbZHIuMZpTcgjGuLU/uBL/ubcZF9OXbDo8ff4O8yVp5Bf0efS8uEoYo5q4Fx7dY9OgQGXgAsQA==",
       "license": "MIT"
     },
+    "node_modules/cross-spawn": {
+      "version": "7.0.6",
+      "resolved": "https://registry.npmjs.org/cross-spawn/-/cross-spawn-7.0.6.tgz",
+      "integrity": "sha512-uV2QOWP2nWzsy2aMp8aRibhi9dlzF5Hgh5SHaB9OiTGEyDTiJJyx0uy51QXdyWbtAHNua4XJzUKca3OzKUd3vA==",
+      "license": "MIT",
+      "dependencies": {
+        "path-key": "^3.1.0",
+        "shebang-command": "^2.0.0",
+        "which": "^2.0.1"
+      },
+      "engines": {
+        "node": ">= 8"
+      }
+    },
     "node_modules/decamelize": {
       "version": "1.2.0",
       "resolved": "https://registry.npmjs.org/decamelize/-/decamelize-1.2.0.tgz",
@@ -469,6 +187,12 @@
         "node": ">=8"
       }
     },
+    "node_modules/isexe": {
+      "version": "2.0.0",
+      "resolved": "https://registry.npmjs.org/isexe/-/isexe-2.0.0.tgz",
+      "integrity": "sha512-RHxMLp9lnKHGHRng9QFhRCMbYAcVpn69smSGcq3f36xjgVVWThj4qqLbTLlq7Ssj8B+fIQ1EuCEGI2lKsyQeIw==",
+      "license": "ISC"
+    },
     "node_modules/locate-path": {
       "version": "5.0.0",
       "resolved": "https://registry.npmjs.org/locate-path/-/locate-path-5.0.0.tgz",
@@ -526,6 +250,15 @@
         "node": ">=8"
       }
     },
+    "node_modules/path-key": {
+      "version": "3.1.1",
+      "resolved": "https://registry.npmjs.org/path-key/-/path-key-3.1.1.tgz",
+      "integrity": "sha512-ojmeN0qd+y0jszEtoY48r0Peq5dwMEkIlCOu6Q5f41lfkswXuKtYrhgoTpLnyIcHm24Uhqx+5Tqm2InSwLhE6Q==",
+      "license": "MIT",
+      "engines": {
+        "node": ">=8"
+      }
+    },
     "node_modules/pngjs": {
       "version": "5.0.0",
       "resolved": "https://registry.npmjs.org/pngjs/-/pngjs-5.0.0.tgz",
@@ -581,6 +314,27 @@
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       "license": "ISC"
     },
+    "node_modules/shebang-command": {
+      "version": "2.0.0",
+      "resolved": "https://registry.npmjs.org/shebang-command/-/shebang-command-2.0.0.tgz",
+      "integrity": "sha512-kHxr2zZpYtdmrN1qDjrrX/Z1rR1kG8Dx+gkpK1G4eXmvXswmcE1hTWBWYUzlraYw1/yZp6YuDY77YtvbN0dmDA==",
+      "license": "MIT",
+      "dependencies": {
+        "shebang-regex": "^3.0.0"
+      },
+      "engines": {
+        "node": ">=8"
+      }
+    },
+    "node_modules/shebang-regex": {
+      "version": "3.0.0",
+      "resolved": "https://registry.npmjs.org/shebang-regex/-/shebang-regex-3.0.0.tgz",
+      "integrity": "sha512-7++dFhtcx3353uBaq8DDR4NuxBetBzC7ZQOhmTQInHEd6bSrXdiEyzCvG07Z44UYdLShWUyXt5M/yhz8ekcb1A==",
+      "license": "MIT",
+      "engines": {
+        "node": ">=8"
+      }
+    },
     "node_modules/string-width": {
       "version": "4.2.3",
       "resolved": "https://registry.npmjs.org/string-width/-/string-width-4.2.3.tgz",
@@ -628,6 +382,21 @@
       "dev": true,
       "license": "MIT"
     },
+    "node_modules/which": {
+      "version": "2.0.2",
+      "resolved": "https://registry.npmjs.org/which/-/which-2.0.2.tgz",
+      "integrity": "sha512-BLI3Tl1TW3Pvl70l3yq3Y64i+awpwXqsGBYWkkqMtnbXgrMD+yj7rhW0kuEDxzJaYXGjEW5ogapKNMEKNMjibA==",
+      "license": "ISC",
+      "dependencies": {
+        "isexe": "^2.0.0"
+      },
+      "bin": {
+        "node-which": "bin/node-which"
+      },
+      "engines": {
+        "node": ">= 8"
+      }
+    },
     "node_modules/which-module": {
       "version": "2.0.1",
       "resolved": "https://registry.npmjs.org/which-module/-/which-module-2.0.1.tgz",
@@ -688,16 +457,6 @@
       "engines": {
         "node": ">=6"
       }
-    },
-    "node_modules/zod": {
-      "version": "4.3.6",
-      "resolved": "https://registry.npmjs.org/zod/-/zod-4.3.6.tgz",
-      "integrity": "sha512-rftlrkhHZOcjDwkGlnUtZZkvaPHCsDATp4pGpuOOMDaTdDDXF91wuVDJoWoPsKX/3YPQ5fHuF3STjcYyKr+Qhg==",
-      "license": "MIT",
-      "peer": true,
-      "funding": {
-        "url": "https://github.com/sponsors/colinhacks"
-      }
     }
   }
 }
diff --git a/package.json b/package.json
index eace5c4..9fd6e9f 100644
--- a/package.json
+++ b/package.json
@@ -11,20 +11,31 @@
     "dev": "tsc --watch",
     "test": "node --test dist/tests/*.test.js",
     "setup": "node dist/main.js setup",
-    "daemon": "bash scripts/daemon.sh",
+    "daemon": "node scripts/daemon.js",
+    "daemon:unix": "bash scripts/daemon.sh",
+    "daemon:win": "powershell -NoProfile -ExecutionPolicy Bypass -File scripts/daemon.ps1",
     "visualize": "npx tsx src/tools/visualize-logs.ts"
   },
   "dependencies": {
-"qrcode": "^1.5.4",
+    "cross-spawn": "^7.0.6",
+    "qrcode": "^1.5.4",
     "qrcode-terminal": "^0.12.0"
   },
   "devDependencies": {
+    "@types/cross-spawn": "^6.0.6",
     "@types/node": "^22.0.0",
     "@types/qrcode": "^1.5.6",
     "@types/qrcode-terminal": "^0.12.0",
     "typescript": "^5.7.0"
   },
-  "keywords": ["wechat", "claude-code", "claude", "bridge", "chat", "skill"],
+  "keywords": [
+    "wechat",
+    "claude-code",
+    "claude",
+    "bridge",
+    "chat",
+    "skill"
+  ],
   "author": "Wechat-ggGitHub",
   "license": "MIT",
   "repository": {
diff --git a/scripts/daemon.ps1 b/scripts/daemon.ps1
new file mode 100644
index 0000000..b049a2a
--- /dev/null
+++ b/scripts/daemon.ps1
@@ -0,0 +1,259 @@
+param(
+    [Parameter(Position = 0)]
+    [ValidateSet("setup", "start", "stop", "restart", "status", "logs")]
+    [string]$Command = "status",
+
+    [Parameter(Position = 1)]
+    [ValidatePattern("^[A-Za-z0-9_-]+$")]
+    [string]$Instance = "default"
+)
+
+$ErrorActionPreference = "Stop"
+
+$ProjectDir = (Resolve-Path (Join-Path $PSScriptRoot "..")).Path
+
+# default 实例继续使用原来的数据目录，保留当前已登录账号
+$BaseDataDir = Join-Path $env:USERPROFILE ".wechat-claude-code"
+
+if ($Instance -eq "default") {
+    $DataDir = $BaseDataDir
+} else {
+    $InstancesDir = Join-Path $BaseDataDir "instances"
+    $DataDir = Join-Path $InstancesDir $Instance
+}
+
+# Node.js 子进程会继承这个环境变量
+$env:WCC_DATA_DIR = $DataDir
+
+$LogDir = Join-Path $DataDir "logs"
+$PidFile = Join-Path $DataDir "wechat-claude-code.pid"
+$StdoutLog = Join-Path $LogDir "stdout.log"
+$StderrLog = Join-Path $LogDir "stderr.log"
+$EntryFile = Join-Path $ProjectDir "dist\main.js"
+
+function Get-NodePath {
+    $nodeCommand = Get-Command node -ErrorAction Stop
+    return $nodeCommand.Source
+}
+
+function Get-SavedProcessId {
+    if (-not (Test-Path $PidFile)) {
+        return $null
+    }
+
+    try {
+        $value = (Get-Content $PidFile -Raw).Trim()
+        [int]$parsedId = 0
+
+        if ([int]::TryParse($value, [ref]$parsedId)) {
+            return $parsedId
+        }
+    } catch {
+        return $null
+    }
+
+    return $null
+}
+
+function Test-ProcessRunning {
+    param(
+        [int]$ProcessId
+    )
+
+    if ($ProcessId -le 0) {
+        return $false
+    }
+
+    try {
+        Get-Process -Id $ProcessId -ErrorAction Stop | Out-Null
+        return $true
+    } catch {
+        return $false
+    }
+}
+
+function Remove-PidFile {
+    if (Test-Path $PidFile) {
+        Remove-Item $PidFile -Force -ErrorAction SilentlyContinue
+    }
+}
+
+function Invoke-InstanceSetup {
+    if (-not (Test-Path $EntryFile)) {
+        throw "dist/main.js not found. Run 'npm run build' first."
+    }
+
+    New-Item -ItemType Directory -Force -Path $DataDir | Out-Null
+
+    $nodePath = Get-NodePath
+
+    Write-Host "Setting up instance: $Instance"
+    Write-Host "Data directory: $DataDir"
+    Write-Host ""
+
+    Push-Location $ProjectDir
+
+    try {
+        & $nodePath $EntryFile setup
+
+        if ($LASTEXITCODE -ne 0) {
+            throw "Setup failed with exit code $LASTEXITCODE"
+        }
+    } finally {
+        Pop-Location
+    }
+}
+
+function Start-Daemon {
+    $savedPid = Get-SavedProcessId
+
+    if ($savedPid -and (Test-ProcessRunning -ProcessId $savedPid)) {
+        Write-Host "Instance '$Instance' is already running (PID: $savedPid)"
+        return
+    }
+
+    Remove-PidFile
+
+    if (-not (Test-Path $EntryFile)) {
+        throw "dist/main.js not found. Run 'npm run build' first."
+    }
+
+    New-Item -ItemType Directory -Force -Path $LogDir | Out-Null
+
+    $nodePath = Get-NodePath
+
+    Write-Host "Starting instance '$Instance'..."
+    Write-Host "Data directory: $DataDir"
+
+    $process = Start-Process `
+        -FilePath $nodePath `
+        -ArgumentList @("`"$EntryFile`"", "start") `
+        -WorkingDirectory $ProjectDir `
+        -WindowStyle Hidden `
+        -RedirectStandardOutput $StdoutLog `
+        -RedirectStandardError $StderrLog `
+        -PassThru
+
+    Set-Content -Path $PidFile -Value $process.Id -Encoding ASCII
+
+    Start-Sleep -Milliseconds 800
+
+    if (-not (Test-ProcessRunning -ProcessId $process.Id)) {
+        Remove-PidFile
+
+        Write-Host ""
+        Write-Host "Daemon exited immediately."
+
+        if (Test-Path $StderrLog) {
+            Write-Host "=== stderr.log ==="
+            Get-Content $StderrLog -Encoding UTF8 -Tail 50
+        }
+
+        throw "Failed to start instance '$Instance'"
+    }
+
+    Write-Host "Started instance '$Instance' (PID: $($process.Id))"
+    Write-Host "Logs: $StdoutLog"
+}
+
+function Stop-Daemon {
+    $savedPid = Get-SavedProcessId
+
+    if (-not $savedPid) {
+        Write-Host "Instance '$Instance' is not running (no PID file)"
+        Remove-PidFile
+        return
+    }
+
+    if (-not (Test-ProcessRunning -ProcessId $savedPid)) {
+        Write-Host "Instance '$Instance' is not running (stale PID: $savedPid)"
+        Remove-PidFile
+        return
+    }
+
+    Write-Host "Stopping instance '$Instance' (PID: $savedPid)..."
+
+    & taskkill.exe /PID $savedPid /T /F | Out-Host
+
+    Start-Sleep -Milliseconds 500
+    Remove-PidFile
+
+    Write-Host "Stopped instance '$Instance'"
+}
+
+function Show-Status {
+    $savedPid = Get-SavedProcessId
+
+    Write-Host "Instance: $Instance"
+    Write-Host "Data directory: $DataDir"
+
+    if ($savedPid -and (Test-ProcessRunning -ProcessId $savedPid)) {
+        $process = Get-Process -Id $savedPid
+        $uptime = (Get-Date) - $process.StartTime
+
+        Write-Host "Status: Running"
+        Write-Host "PID: $savedPid"
+        Write-Host "Started: $($process.StartTime)"
+        Write-Host "Uptime: $([math]::Floor($uptime.TotalHours))h $($uptime.Minutes)m"
+        return
+    }
+
+    if ($savedPid) {
+        Remove-PidFile
+    }
+
+    Write-Host "Status: Not running"
+}
+
+function Show-Logs {
+    Write-Host "Instance: $Instance"
+    Write-Host "Data directory: $DataDir"
+    Write-Host ""
+
+    $found = $false
+
+    if (Test-Path $StdoutLog) {
+        $found = $true
+        Write-Host "=== stdout.log ==="
+        Get-Content $StdoutLog -Encoding UTF8 -Tail 100
+    }
+
+    if (Test-Path $StderrLog) {
+        $found = $true
+        Write-Host ""
+        Write-Host "=== stderr.log ==="
+        Get-Content $StderrLog -Encoding UTF8 -Tail 100
+    }
+
+    if (-not $found) {
+        Write-Host "No logs found"
+    }
+}
+
+switch ($Command) {
+    "setup" {
+        Invoke-InstanceSetup
+    }
+
+    "start" {
+        Start-Daemon
+    }
+
+    "stop" {
+        Stop-Daemon
+    }
+
+    "restart" {
+        Stop-Daemon
+        Start-Sleep -Seconds 1
+        Start-Daemon
+    }
+
+    "status" {
+        Show-Status
+    }
+
+    "logs" {
+        Show-Logs
+    }
+}
\ No newline at end of file
diff --git a/src/claude/provider.ts b/src/claude/provider.ts
index fedb7a3..0f82f0c 100644
--- a/src/claude/provider.ts
+++ b/src/claude/provider.ts
@@ -1,4 +1,5 @@
-import { spawn, type ChildProcess } from 'node:child_process';
+import crossSpawn from 'cross-spawn';
+import type { ChildProcess } from 'node:child_process';
 import { writeFileSync, unlinkSync, mkdirSync } from 'node:fs';
 import { join } from 'node:path';
 import { tmpdir } from 'node:os';
@@ -121,10 +122,11 @@ export async function claudeQuery(options: QueryOptions): Promise<QueryResult> {
     };
 
     try {
-      child = spawn('claude', args, {
+      child = crossSpawn('claude', args, {
         cwd,
         stdio: ['pipe', 'pipe', 'pipe'],
         env: { ...process.env },
+        windowsHide: true,
       });
     } catch (err: unknown) {
       const msg = err instanceof Error ? err.message : String(err);
diff --git a/src/config.ts b/src/config.ts
index 085d33c..094df56 100644
--- a/src/config.ts
+++ b/src/config.ts
@@ -1,7 +1,6 @@
 import { readFileSync, writeFileSync, mkdirSync, chmodSync } from "node:fs";
 import { join } from "node:path";
-import { homedir } from "node:os";
-import { DEFAULT_WORKING_DIR } from "./constants.js";
+import { DATA_DIR, DEFAULT_WORKING_DIR } from "./constants.js";
 
 export interface Config {
   workingDirectory: string;
@@ -9,7 +8,7 @@ export interface Config {
   systemPrompt?: string;
 }
 
-const CONFIG_DIR = join(homedir(), ".wechat-claude-code");
+const CONFIG_DIR = DATA_DIR;
 const CONFIG_PATH = join(CONFIG_DIR, "config.json");
 
 const DEFAULT_CONFIG: Config = {
diff --git a/src/logger.ts b/src/logger.ts
index 90ba24b..81ec109 100644
--- a/src/logger.ts
+++ b/src/logger.ts
@@ -1,8 +1,8 @@
 import { mkdirSync, appendFileSync, readdirSync, unlinkSync } from "node:fs";
 import { join } from "node:path";
-import { homedir } from "node:os";
+import { DATA_DIR } from "./constants.js";
 
-const LOG_DIR = join(homedir(), ".wechat-claude-code", "logs");
+const LOG_DIR = join(DATA_DIR, "logs");
 const MAX_LOG_FILES = 30; // Keep at most 30 days of logs
 
 /** Clean up old log files beyond MAX_LOG_FILES retention. */
diff --git a/src/main.ts b/src/main.ts
index e0bb69b..1878c88 100644
--- a/src/main.ts
+++ b/src/main.ts
@@ -379,7 +379,7 @@ async function handleMessage(
       accountId: account.accountId,
       session,
       updateSession,
-      clearSession: () => sessionStore.clear(account.accountId),
+      clearSession: () => sessionStore.clear(account.accountId, session),
       getChatHistoryText: (limit?: number) => sessionStore.getChatHistoryText(session, limit),
       text: userText,
     };
diff --git a/src/wechat/accounts.ts b/src/wechat/accounts.ts
index aa057a8..6d50304 100644
--- a/src/wechat/accounts.ts
+++ b/src/wechat/accounts.ts
@@ -1,8 +1,8 @@
 import { join } from 'node:path';
-import { homedir } from 'node:os';
 import { readdirSync, statSync } from 'node:fs';
 import { loadJson, saveJson, validateAccountId } from '../store.js';
 import { logger } from '../logger.js';
+import { DATA_DIR } from '../constants.js';
 
 export const DEFAULT_BASE_URL = 'https://ilinkai.weixin.qq.com';
 
@@ -14,7 +14,7 @@ export interface AccountData {
   createdAt: string;
 }
 
-const ACCOUNTS_DIR = join(homedir(), '.wechat-claude-code', 'accounts');
+const ACCOUNTS_DIR = join(DATA_DIR, 'accounts');
 
 function accountPath(accountId: string): string {
   validateAccountId(accountId);