Environment

• Archon version: v0.3.12 (compiled binary, archon-windows-x64.exe)
• Platform: Windows 10 Pro (win32-x64)
• Claude Code: v2.1.144 (npm-installed globally via npm install -g @anthropic-ai/claude-code)

Config

~/.archon/config.yaml:

assistants:
  claude:
    claudeBinaryPath: C:\Users\123\AppData\Roaming\npm\node_modules\@anthropic-ai\claude-code\node_modules\@anthropic-
ai\claude-code-win32-x64

What happens

1. Run archon workflow run archon-assist "test"
2. Archon correctly resolves the binary path from config —log confirms:

   INFO claude.binary_resolved
       binaryPath: "C:\Users\...\claude-code-win32-x64"
       source: "config"
   

3. Path is passed to Claude Agent SDK as pathToClaudeCodeExecutable
4. SDK throws:

ReferenceError: Claude Code native binary not found at C:\Users\123\AppData\Roaming\npm\node_modules\@anthropic-ai\cla
ude-code\node_modules\@anthropic-ai\claude-code-win32-x64. Please ensure Claude Code is installed via native installer
 or specify a valid path with options.pathToClaudeCodeExecutable.
    at <anonymous> (B:/~BUN/root/archon-windows-x64.exe:97:18436)
    at emitError (node:events:43:23)
    at <anonymous> (node:child_process:718:20)

Why this is unexpected

• claude.exe (229 MB) exists inside the specified directory
• Running the binary directly works: claude.exe --version →2.1.144 (Claude Code)
• The error originates from node:child_process spawn, suggesting the SDK's native binary discovery/spawn fails
  inside the Bun-compiled Archon binary on Windows
• The path survives Archon's fileExists check (existsSync returns true for the directory), but the SDK cannot
  spawn it

Tried

• Path as directory: ...\claude-code-win32-x64 →same error
• Path as full executable: ...\claude-code-win32-x64\claude.exe →same error
• CLAUDE_BIN_PATH env var not set (expecting config.yaml to work in compiled binary mode per binary-resolver.ts)

Relevant code path

binary-resolver.ts →provider.ts line 512 (pathToClaudeCodeExecutable: cliPath) →Claude Agent SDK
child_process.spawn()