diff --git a/VERSION b/VERSION
index ee74734a..627a3f43 100644
--- a/VERSION
+++ b/VERSION
@@ -1 +1 @@
-4.1.0
+4.1.1
diff --git a/bin/ccs.js b/bin/ccs.js
index 163110ff..a88cc491 100755
--- a/bin/ccs.js
+++ b/bin/ccs.js
@@ -255,6 +255,12 @@ async function handleDoctorCommand() {
 }
 
 async function handleUpdateCommand() {
+  // First, copy .claude/ directory from package to ~/.ccs/.claude/
+  const ClaudeDirInstaller = require('./utils/claude-dir-installer');
+  const installer = new ClaudeDirInstaller();
+  installer.install();
+
+  // Then, create symlinks from ~/.ccs/.claude/ to ~/.claude/
   const ClaudeSymlinkManager = require('./utils/claude-symlink-manager');
   const manager = new ClaudeSymlinkManager();
 
diff --git a/bin/utils/claude-dir-installer.js b/bin/utils/claude-dir-installer.js
new file mode 100644
index 00000000..7d57a1ef
--- /dev/null
+++ b/bin/utils/claude-dir-installer.js
@@ -0,0 +1,102 @@
+#!/usr/bin/env node
+'use strict';
+
+const fs = require('fs');
+const path = require('path');
+const os = require('os');
+
+/**
+ * ClaudeDirInstaller - Manages copying .claude/ directory from package to ~/.ccs/.claude/
+ * v4.1.1: Fix for npm install not copying .claude/ directory
+ */
+class ClaudeDirInstaller {
+  constructor() {
+    this.homeDir = os.homedir();
+    this.ccsClaudeDir = path.join(this.homeDir, '.ccs', '.claude');
+  }
+
+  /**
+   * Copy .claude/ directory from package to ~/.ccs/.claude/
+   * @param {string} packageDir - Package installation directory (default: auto-detect)
+   */
+  install(packageDir) {
+    try {
+      // Auto-detect package directory if not provided
+      if (!packageDir) {
+        // Try to find package root by going up from this file
+        packageDir = path.join(__dirname, '..', '..');
+      }
+
+      const packageClaudeDir = path.join(packageDir, '.claude');
+
+      if (!fs.existsSync(packageClaudeDir)) {
+        console.log('[!] Package .claude/ directory not found');
+        console.log(`    Searched in: ${packageClaudeDir}`);
+        console.log('    This may be a development installation');
+        return false;
+      }
+
+      console.log('[i] Installing CCS .claude/ items...');
+
+      // Remove old version before copying new one
+      if (fs.existsSync(this.ccsClaudeDir)) {
+        fs.rmSync(this.ccsClaudeDir, { recursive: true, force: true });
+      }
+
+      // Use fs.cpSync for recursive copy (Node.js 16.7.0+)
+      // Fallback to manual copy for older Node.js versions
+      if (fs.cpSync) {
+        fs.cpSync(packageClaudeDir, this.ccsClaudeDir, { recursive: true });
+      } else {
+        // Fallback for Node.js < 16.7.0
+        this._copyDirRecursive(packageClaudeDir, this.ccsClaudeDir);
+      }
+
+      console.log('[OK] Copied .claude/ items to ~/.ccs/.claude/');
+      return true;
+    } catch (err) {
+      console.warn('[!] Failed to copy .claude/ directory:', err.message);
+      console.warn('    CCS items may not be available');
+      return false;
+    }
+  }
+
+  /**
+   * Recursively copy directory (fallback for Node.js < 16.7.0)
+   * @param {string} src - Source directory
+   * @param {string} dest - Destination directory
+   * @private
+   */
+  _copyDirRecursive(src, dest) {
+    // Create destination directory
+    if (!fs.existsSync(dest)) {
+      fs.mkdirSync(dest, { recursive: true });
+    }
+
+    // Read source directory
+    const entries = fs.readdirSync(src, { withFileTypes: true });
+
+    for (const entry of entries) {
+      const srcPath = path.join(src, entry.name);
+      const destPath = path.join(dest, entry.name);
+
+      if (entry.isDirectory()) {
+        // Recursively copy subdirectory
+        this._copyDirRecursive(srcPath, destPath);
+      } else {
+        // Copy file
+        fs.copyFileSync(srcPath, destPath);
+      }
+    }
+  }
+
+  /**
+   * Check if ~/.ccs/.claude/ exists and is valid
+   * @returns {boolean} True if directory exists
+   */
+  isInstalled() {
+    return fs.existsSync(this.ccsClaudeDir);
+  }
+}
+
+module.exports = ClaudeDirInstaller;
diff --git a/installers/install.ps1 b/installers/install.ps1
index 2272b732..cfda70fa 100644
--- a/installers/install.ps1
+++ b/installers/install.ps1
@@ -31,7 +31,7 @@ $InstallMethod = if ($ScriptDir -and ((Test-Path "$ScriptDir\lib\ccs.ps1") -or (
 # IMPORTANT: Update this version when releasing new versions!
 # This hardcoded version is used for standalone installations (irm | iex)
 # For git installations, VERSION file is read if available
-$CcsVersion = "4.1.0"
+$CcsVersion = "4.1.1"
 
 # Try to read VERSION file for git installations
 if ($ScriptDir) {
diff --git a/installers/install.sh b/installers/install.sh
index cf482eb5..8f23ca38 100755
--- a/installers/install.sh
+++ b/installers/install.sh
@@ -32,7 +32,7 @@ fi
 # IMPORTANT: Update this version when releasing new versions!
 # This hardcoded version is used for standalone installations (curl | bash)
 # For git installations, VERSION file is read if available
-CCS_VERSION="4.1.0"
+CCS_VERSION="4.1.1"
 
 # Try to read VERSION file for git installations
 if [[ -f "$SCRIPT_DIR/VERSION" ]]; then
diff --git a/lib/ccs b/lib/ccs
index 01c4b040..f177d438 100755
--- a/lib/ccs
+++ b/lib/ccs
@@ -2,7 +2,7 @@
 set -euo pipefail
 
 # Version (updated by scripts/bump-version.sh)
-CCS_VERSION="4.1.0"
+CCS_VERSION="4.1.1"
 SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
 readonly CONFIG_FILE="${CCS_CONFIG:-$HOME/.ccs/config.json}"
 readonly PROFILES_JSON="$HOME/.ccs/profiles.json"
diff --git a/lib/ccs.ps1 b/lib/ccs.ps1
index 4880ec1f..0798f1c4 100644
--- a/lib/ccs.ps1
+++ b/lib/ccs.ps1
@@ -12,7 +12,7 @@ param(
 $ErrorActionPreference = "Stop"
 
 # Version (updated by scripts/bump-version.sh)
-$CcsVersion = "4.1.0"
+$CcsVersion = "4.1.1"
 $ScriptDir = Split-Path -Parent $MyInvocation.MyCommand.Path
 $ConfigFile = if ($env:CCS_CONFIG) { $env:CCS_CONFIG } else { "$env:USERPROFILE\.ccs\config.json" }
 $ProfilesJson = "$env:USERPROFILE\.ccs\profiles.json"
diff --git a/package.json b/package.json
index ff5ddc80..a1eff3c3 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@kaitranntt/ccs",
-  "version": "4.1.0",
+  "version": "4.1.1",
   "description": "Claude Code Switch - Instant profile switching between Claude Sonnet 4.5 and GLM 4.6",
   "keywords": [
     "cli",
diff --git a/scripts/postinstall.js b/scripts/postinstall.js
index 6301f39e..ab19055c 100755
--- a/scripts/postinstall.js
+++ b/scripts/postinstall.js
@@ -103,6 +103,17 @@ function createConfigFiles() {
     }
     console.log('');
 
+    // Copy .claude/ directory from package to ~/.ccs/.claude/ (v4.1.1)
+    try {
+      const ClaudeDirInstaller = require('../bin/utils/claude-dir-installer');
+      const installer = new ClaudeDirInstaller();
+      const packageDir = path.join(__dirname, '..');
+      installer.install(packageDir);
+    } catch (err) {
+      console.warn('[!] Failed to install .claude/ directory:', err.message);
+      console.warn('    CCS items may not be available');
+    }
+
     // Install CCS items to ~/.claude/ (v4.1.0)
     try {
       const ClaudeSymlinkManager = require('../bin/utils/claude-symlink-manager');