[BUG] "Word (By Anthropic)" extension: replace_text always fails with AppleScript syntax error

Preflight Checklist

• [x] I have searched existing issues and this hasn't been reported yet
• [x] This is a single bug report (please file separate reports for different bugs)
• [x] I am using the latest version of Claude Code

What's Wrong?

The replace_text function of the "Word (By Anthropic)" desktop extension always fails. It generates malformed AppleScript regardless of the search text or the "all" parameter — Word rejects it with a syntax error because the "replace" parameter is set twice in the execute command.

What Should Happen?

replace_text should find and replace the given text in the active Word document without error.

Error Messages/Logs

execute find findObject replace replace all replace replace all
→ syntax error: The «class 5642» parameter is specified more than once. (-2750)

Steps to Reproduce

1. Open a .docx file with the "Word (By Anthropic)" extension (open_document)
2. Call replace_text with any find/replace string, e.g. find: "test", replace: "Test"
3. Observe AppleScript syntax error every time, even for a single plain word

Claude Model

Sonnet (default)

Is this a regression?

Yes, this worked in a previous version

Last Working Version

_No response_

Claude Code Version

Claude Desktop 1.52386.3

Platform

Other

Operating System

macOS

Terminal/Shell

Other

Additional Information

This occurs via the "Word (By Anthropic)" local MCP extension in Claude Desktop, not the Claude Code CLI. Device: macOS, arm64.