Add byok ai extension

[ivankmk]

Summary

BYOK AI - Bring Your Own Key Chat is a Chrome side panel extension for chatting with any OpenRouter model using your own API key.

Features

• Page context sharing -- attach visible page text to your prompt
• Custom roles (system prompt + prefix) with 3 presets: Page Assistant, Data Scraper, Briefing Agent
• Quick model and role switchers with starred favorites
• Local chat history (last 50 chats, searchable)
• Model pricing shown inline (input/output cost per million tokens)
• No backend, no analytics -- API key stored in chrome.storage.local, requests go directly to OpenRouter

Links

• Chrome Web Store: https://chromewebstore.google.com/detail/byok-ai-bring-your-own-ke/hlplpnglhpoklidbkkaelahmdkfigooe
• Setup docs: https://ivankmk.tech/projects/byok_chat/#how-to-use
• Privacy policy: https://ivankmk.tech/projects/byok_chat/privacy/

Checklist

• Uses OpenRouter for AI model access
• Users bring their own OpenRouter API key
• Publicly accessible (published on Chrome Web Store, v1.4.0)
• Logo included (logo.png)