fix(windows): add Node.js path detection for claude.cmd validation

apps/frontend/src/main/claude-cli-utils.ts

@@ -1,6 +1,7 @@
 import path from 'path';
 import { getAugmentedEnv, getAugmentedEnvAsync } from './env-utils';
 import { getToolPath, getToolPathAsync } from './cli-tool-manager';
+import { findNodeJsDirectories } from './platform';
 
 export type ClaudeCliInvocation = {
   command: string;
@@ -25,13 +26,32 @@ function ensureCommandDirInPath(command: string, env: Record<string, string>): R
       .map((entry) => path.normalize(entry))
       .includes(normalizedCommandDir);
 
-  if (hasCommandDir) {
+  // Collect directories to add
+  let dirsToAdd = hasCommandDir ? [] : [commandDir];
+
+  // On Windows, if running claude.cmd, also add Node.js directories to PATH
+  // This is needed because claude.cmd requires node.exe to execute
+  if (process.platform === 'win32' && /\.cmd$/i.test(command)) {
+    const nodeDirs = findNodeJsDirectories();
+    // Filter out directories already in PATH
+    for (const nodeDir of nodeDirs) {
+      const normalizedNodeDir = path.normalize(nodeDir);
+      const hasNodeDir = pathEntries
+        .map((entry) => path.normalize(entry).toLowerCase())
+        .includes(normalizedNodeDir.toLowerCase());
+      if (!hasNodeDir) {
+        dirsToAdd.push(nodeDir);
+      }
+    }
+  }
+
+  if (dirsToAdd.length === 0) {
     return env;
   }
 
   return {
     ...env,
-    PATH: [commandDir, currentPath].filter(Boolean).join(pathSeparator),
+    PATH: [...dirsToAdd, currentPath].filter(Boolean).join(pathSeparator),
   };
 }
 

apps/frontend/src/main/cli-tool-manager.ts

@@ -27,7 +27,7 @@ import os from 'os';
 import { promisify } from 'util';
 import { app } from 'electron';
 import { findExecutable, findExecutableAsync, getAugmentedEnv, getAugmentedEnvAsync, shouldUseShell, existsAsync } from './env-utils';
-import { isWindows, isMacOS, isUnix, joinPaths, getExecutableExtension } from './platform';
+import { isWindows, isMacOS, isUnix, joinPaths, getExecutableExtension, findNodeJsDirectories } from './platform';
 import type { ToolDetectionResult } from '../shared/types';
 import { findHomebrewPython as findHomebrewPythonUtil } from './utils/homebrew-python';
 
@@ -942,7 +942,19 @@ class CLIToolManager {
 
       const needsShell = shouldUseShell(trimmedCmd);
       const cmdDir = path.dirname(unquotedCmd);
-      const env = getAugmentedEnv(cmdDir && cmdDir !== '.' ? [cmdDir] : []);
+
+      // Prepare additional paths for environment augmentation
+      let additionalPaths = cmdDir && cmdDir !== '.' ? [cmdDir] : [];
+
+      // On Windows, if validating claude.cmd, also add Node.js directories to PATH
+      // This is needed because claude.cmd requires node.exe to execute
+      if (isWindows() && /\.cmd$/i.test(unquotedCmd)) {
+        const nodeDirs = findNodeJsDirectories();
+        additionalPaths = [...additionalPaths, ...nodeDirs];
+        console.warn('[Claude CLI] Adding Node.js directories to PATH for .cmd validation:', nodeDirs);
+      }
+
+      const env = getAugmentedEnv(additionalPaths);
 
       let version: string;
 
@@ -1081,7 +1093,19 @@ class CLIToolManager {
 
       const needsShell = shouldUseShell(trimmedCmd);
       const cmdDir = path.dirname(unquotedCmd);
-      const env = await getAugmentedEnvAsync(cmdDir && cmdDir !== '.' ? [cmdDir] : []);
+
+      // Prepare additional paths for environment augmentation
+      let additionalPaths = cmdDir && cmdDir !== '.' ? [cmdDir] : [];
+
+      // On Windows, if validating claude.cmd, also add Node.js directories to PATH
+      // This is needed because claude.cmd requires node.exe to execute
+      if (isWindows() && /\.cmd$/i.test(unquotedCmd)) {
+        const nodeDirs = findNodeJsDirectories();
+        additionalPaths = [...additionalPaths, ...nodeDirs];
+        console.warn('[Claude CLI] Adding Node.js directories to PATH for .cmd validation:', nodeDirs);
+      }
+
+      const env = await getAugmentedEnvAsync(additionalPaths);
 
       let stdout: string;
 

apps/frontend/src/main/ipc-handlers/claude-code-handlers.ts

@@ -19,6 +19,7 @@ import type { ClaudeCodeVersionInfo, ClaudeInstallationList, ClaudeInstallationI
 import { getToolInfo, configureTools, sortNvmVersionDirs, getClaudeDetectionPaths, type ExecFileAsyncOptionsWithVerbatim } from '../cli-tool-manager';
 import { readSettingsFile, writeSettingsFile } from '../settings-utils';
 import { isSecurePath } from '../utils/windows-paths';
+import { findNodeJsDirectories } from '../platform';
 import semver from 'semver';
 
 const execFileAsync = promisify(execFile);
@@ -45,9 +46,19 @@ async function validateClaudeCliAsync(cliPath: string): Promise<[boolean, string
 
     // Augment PATH with the CLI directory for proper resolution
     const cliDir = path.dirname(cliPath);
+    let pathEntries = [cliDir];
+
+    // On Windows, if validating claude.cmd, also add Node.js directories to PATH
+    // This is needed because claude.cmd requires node.exe to execute
+    if (isWindows && /\.cmd$/i.test(cliPath)) {
+      const nodeDirs = findNodeJsDirectories();
+      pathEntries = [...pathEntries, ...nodeDirs];
+      console.log('[Claude CLI] Adding Node.js directories to PATH for .cmd validation:', nodeDirs);
+    }
+
     const env = {
       ...process.env,
-      PATH: cliDir ? `${cliDir}${path.delimiter}${process.env.PATH || ''}` : process.env.PATH,
+      PATH: pathEntries.filter(Boolean).concat(process.env.PATH || '').join(path.delimiter),
     };
 
     let stdout: string;

apps/frontend/src/main/platform/index.ts

@@ -18,7 +18,7 @@ import { spawn, ChildProcess } from 'child_process';
 import { OS, ShellType, PathConfig, ShellConfig, BinaryDirectories } from './types';
 
 // Re-export from paths.ts for backward compatibility
-export { getWindowsShellPaths } from './paths';
+export { getWindowsShellPaths, findNodeJsDirectories } from './paths';
 
 /**
  * Get the current operating system

apps/frontend/src/main/platform/paths.ts

@@ -163,6 +163,75 @@ export function getNpmExecutablePath(): string {
   return 'npm';
 }
 
+/**
+ * Find Node.js installation directories on Windows
+ *
+ * Returns array of potential Node.js bin directories where node.exe might be installed.
+ * This is needed because claude.cmd (npm global binary) requires node.exe to be in PATH.
+ *
+ * Search priority:
+ * 1. Program Files\nodejs (standard installer location)
+ * 2. %APPDATA%\npm (user-level npm globals - may contain node.exe with nvm-windows)
+ * 3. NVM for Windows installation directories
+ * 4. Scoop, Chocolatey installations
+ *
+ * @returns Array of existing Node.js bin directories
+ */
+export function findNodeJsDirectories(): string[] {
+  if (!isWindows()) {
+    return [];
+  }
+
+  const homeDir = os.homedir();
+  const candidates: string[] = [
+    // Standard Node.js installer location
+    joinPaths('C:\\Program Files', 'nodejs'),
+    joinPaths('C:\\Program Files (x86)', 'nodejs'),
+
+    // User-level npm global directory (may contain node.exe with nvm-windows)
+    joinPaths(homeDir, 'AppData', 'Roaming', 'npm'),
+
+    // NVM for Windows default location
+    joinPaths(homeDir, 'AppData', 'Roaming', 'nvm'),
+    joinPaths('C:\\Program Files', 'nvm'),
+
+    // Scoop installation
+    joinPaths(homeDir, 'scoop', 'apps', 'nodejs', 'current'),
+
+    // Chocolatey installation
+    joinPaths('C:\\ProgramData', 'chocolatey', 'bin'),
+  ];
+
+  // For NVM, we need to find the active Node.js version directory
+  const nvmPath = joinPaths(homeDir, 'AppData', 'Roaming', 'nvm');
+  if (existsSync(nvmPath)) {
+    try {
+      // Find all version directories (e.g., v20.0.0, v18.17.1)
+      const entries = readdirSync(nvmPath, { withFileTypes: true });
+      const versionDirs = entries
+        .filter((entry) => entry.isDirectory() && /^v\d+\.\d+\.\d+$/.test(entry.name))
+        .sort((a, b) => {
+          // Sort by version descending (newest first)
+          const vA = a.name.slice(1).split('.').map(Number);
+          const vB = b.name.slice(1).split('.').map(Number);
+          for (let i = 0; i < 3; i++) {
+            const diff = (vB[i] ?? 0) - (vA[i] ?? 0);
+            if (diff !== 0) return diff;
+          }
+          return 0;
+        })
+        .map((entry) => joinPaths(nvmPath, entry.name));
+
+      candidates.push(...versionDirs);
+    } catch {
+      // Ignore errors reading NVM directory
+    }
+  }
+
+  // Return only existing directories
+  return candidates.filter((dir) => existsSync(dir));
+}
+
 /**
  * Get all Windows shell paths for terminal selection
  *