Add voice interactions with Gemini Live and ros-mcp-server to Gemini example.

[tracelarue]

Gemini Live for low-latency bidirectional voice interactions with ros-mcp-server.

• Added gemini_live to examples/2_gemini.
• Enables audio input from the user and audio output from Gemini.
• Enables Gemini Live to use ros-mcp-server.
• Tested in ubuntu 22.04, python 3.10, ros2 humble.

[stex2005]

Thank you for your contribution, @tracelarue. I will give it a try soon.

@rjohn-v — I’d suggest adding a client/ folder in the repository to store installation packages and runnable clients. This would help keep different client implementations (e.g., Gemini API client) and their installation steps organized in one place. I’m not sure I’d keep this under examples/.

[stex2005]

I connected issue #62 to this PR.
After, we can close it and reopen for other APIs.

[stex2005]

Raises this error during installation, seems that I need a system-package: portaudio.

I woudl recommend trying to include this into dependencies in the README.md + comamnd to install:

sudo apt install portaudio19-dev

[stex2005]

Couldn't run uv run on my WSL Ubuntu. Please specify that this works only on Ubuntu, will try on Ubuntu soon.

[stex2005]

@tracelarue @rjohn-v Another good next step would be to provide a dockerized version of the Gemini client, so it can be run more easily in different environments. Since the client is only a tool within this project, I don’t think we should invest too much effort in tightly integrating it into the repo. A simplified version of client_gemini (without audio support) would already be a good, lightweight solution and would find a good place in clients folder.

[stex2005]

Couldn't run uv run on my WSL Ubuntu. Please specify that this works only on Ubuntu, will try on Ubuntu soon.

This is the same error when I try to run mcp_handler.py

[tracelarue]

@stex2005 Thank you for the review and feedback. I'll work on getting these changes and fixes implemented.

[mokcontoro]

@tracelarue wow, voice command sounds super cool. thanks for your contributions. I cannot wait for trying this feature soon!

[tracelarue]

@stex2005 Ready for review

Changes made:

• removed mcp_config.json and instruct user to create their own
• removed pyproject.toml and uv.lock. Now uses uv pip install to install dependencies in the existing ros-mcp .venv
• updated README.md to specify .env location
• renamed gemini_live.py to gemini_client.py
• specified it only works on ubuntu in README.md (try WSL again after these changes)
• removed mcp_handler.py in favor of Google's latest method to connect to mcp servers
• Other gemini_client.py improvements and README.md updates