Toolbox binary not available for Linux aarch64 architecture.

Pre-reqs

• I've searched the current open issues
• I've updated to the latest versions

Extension Version

0.2.1

Gemini CLI Version

0.26.0

Environment

Linux vm-ubuntu24dev 6.14.0-37-generic #37~24.04.1-Ubuntu SMP PREEMPT_DYNAMIC Fri Nov 21 03:10:52 UTC 2 aarch64 aarch64 aarch64 GNU/Linux

Current Behavior

I am using Gemini CLI on a Ubuntu VM on a Macbook M3 (ARM). The toolbox binary that gets installed for this extension on my ARM-based Linux VM is for x86-64 architecture. This gives the following message on startup:

Error during discovery for MCP server 'postgresql': MCP error -32000: Connection closed

Expected Behavior

I would expect that the aarch64 version of the binary to be installed. Also, the error message given is incorrect making this harder to determine the actual cause. I would expect the message to match closer what the repo documentation says:

either:

MCP ERROR: Error: spawn /Users/USER/.gemini/extensions/postgres/toolbox ENOENT": The Toolbox binary did not download correctly. Ensure you are using Gemini CLI v0.6.0+.

or

"cannot execute binary file": The Toolbox binary did not download correctly. Ensure the correct binary for your OS/Architecture has been downloaded.

Steps to reproduce?

1. Using an ARM version of Linux, install Gemini CLI from a terminal.
2. Install postgres extension via: $ gemini extensions install https://github.com/gemini-cli-extensions/postgres
3. Check the 'toolbox' binary via: $ file ~/.gemini/extensions/postgres/toolbox

Additional Details

No response

Start by reproducing the installation on Linux aarch64 with the documented Gemini CLI extension command, then inspect the installed toolbox using the file command. Trace how the extension selects or downloads the binary. Done means the aarch64 binary is installed and the startup failure reports the documented architecture or download problem.