docs: Add initial README.md

README.md

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+# Multi-Platform Chat Overlay
+
+A self-hosted tool to aggregate chat from multiple streaming platforms (YouTube, Twitch) and display it in a customizable OBS overlay. This project also provides a suite of tools for both the streamer (host) and their moderators to manage the chat.
+
+## Core Features
+
+*   **Combined Chat:** Aggregates chat from YouTube and Twitch into a single feed.
+*   **OBS Overlay:** A customizable web-based overlay to display the chat in your stream.
+*   **Host Control Panel:** A dockable OBS panel for the streamer to:
+    *   Highlight important messages to feature them on the overlay.
+    *   View a queue of messages tagged by moderators.
+    *   Dismiss queued messages after they have been addressed.
+*   **Moderator Panel:** A separate, secure web page for moderators to:
+    *   View the combined chat feed.
+    *   "Tag" or "Queue" important messages for the host's attention.
+
+## Technology Stack
+
+*   **Backend:** Python 3.9+ with FastAPI and WebSockets.
+*   **Frontend:** HTML5, CSS3, and vanilla JavaScript.
+*   **Chat Libraries:** `pytchat` for YouTube and `TwitchIO` for Twitch.
+
+## Getting Started
+
+_(Instructions will be added here once the initial version is complete)_
+
+1.  Clone the repository.
+2.  Install Python dependencies.
+3.  Run the backend server.
+4.  Add the frontend components to OBS as Browser Sources/Docks.