Add support for Firebender (AI coding agent for Android Studio)

[echarrod]

Feature Request

Add official support for Firebender, an AI coding agent for Android Studio and IntelliJ.

Background

Firebender is an AI-powered coding agent specifically designed for Android development. It supports custom agents via agent.md files, making it a natural fit for SpecKit integration.

Firebender Details

• Website: https://firebender.com/
• Platform: Android Studio / IntelliJ plugin
• Key features: In-editor code rewriting, custom agents (agent.md), voice mode, multi-model support (Claude, GPT, Gemini)

Request

Add Firebender to the supported AI agents in SpecKit so users can leverage SpecKit's specification-driven workflow within their Android Studio / IntelliJ environment.

[mnriem]

@echarrod Open for your or anyone else contribution for this!