[Feature Request] Add support for RikkaHub

[Infinifar]

Description

Please add support for RikkaHub as a supported AI assistant in SwitchAI.

About RikkaHub

RikkaHub is a native Android LLM chat client (Kotlin + Jetpack Compose + Material You) that supports multiple AI providers (OpenAI, Anthropic, Google, etc.), multimodal input, MCP support, and Markdown rendering. It's available on Google Play and has an active community.

Technical Details

Property	Value
Package Name	me.rerere.rikkahub
Main Activity	me.rerere.rikkahub.RouteActivity
Google Play URL	https://play.google.com/store/apps/details?id=me.rerere.rikkahub
GitHub	https://github.com/rikkahub/rikkahub

Suggested Implementation

Following the existing assistant pattern, it would look like:

package com.wstxda.switchai.assistant

import com.wstxda.switchai.R
import com.wstxda.switchai.activity.AssistantActivity
import com.wstxda.switchai.logic.openAssistant
import com.wstxda.switchai.utils.AssistantProperties

class RikkaHubAssistant : AssistantActivity() {

    companion object : AssistantProperties {
        override val packageName = "me.rerere.rikkahub"
    }

    override fun onCreateInternal() {
        openAssistant(
            intents = listOf(createRikkaHubIntent()),
            errorMessage = R.string.assistant_application_not_found
        )
    }

    private fun createRikkaHubIntent() = createAssistantIntent(
        packageName = Companion.packageName,
        defaultActivity = "me.rerere.rikkahub.RouteActivity"
    )
}

RikkaHub doesn't have a dedicated voice input activity, so only defaultActivity is needed. The same defaultActivity can be opened with ASSIST action for voice input — or just use the default activity for both.

Thank you for considering this request! Happy to provide any additional information if needed.