Add Bugzilla quicksearch to MCP server

[loganrosen]

Adding support for Bugzilla quicksearch to the MCP server so that people working on Firefox code can easily find relevant bugs while using AI assistance in their editor. Example output:

I've also made the API keys optional because I don't think they should be required for someone developing on this MCP server. Please let me know if you think otherwise.

[suhaibmujahid]

The Quick Search does not really support natural-language search. The Quick Search enables shortcuts, e.g, Status:RESOLVED (without space after :), which get converted to an advanced search.

Here is how to use it: https://bugzilla.mozilla.org/page.cgi?id=quicksearch.html

I think something like a Skill would be more suitable for this, since explaining it in the tool description would be overkill.

I'm curious to learn about your use case for this tool.

[loganrosen]

Makes sense. My use case is wanting to find any existing bugs that might be related to something I discover in the code while working on the Firefox codebase vs. having to manually search Bugzilla in my browser. I can clarify the guidance in a skill and keep the tool lightweight for performing the queries. What do you think?

[suhaibmujahid]

@loganrosen, sorry for the late reply. It seems that I missed the notification.

Creating a lightweight tool to perform the queries sounds good to me. We could try it without a skill at first, just by pointing to the doc's URL. The URL could trigger relevant context, and the model might know how to use it even without fetching the URL.

[loganrosen]

Sounds good — I've updated the docstring to drop the natural-language claim and just link to the quicksearch docs. Let me know if the updated description looks alright.