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server/server.md

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+# KeyLock Server
+
+This is the server-side component of the KeyLock system. It's a self-contained Gradio application that provides a secure API endpoint for decrypting data hidden in PNG images.
+
+## Functionality
+-   **Hosts a UI**: Provides documentation and status information.
+-   **Exposes an API**: Listens for `POST` requests at `/run/keylock-auth-decoder`.
+-   **Secure Decryption**: Uses a private RSA key to decrypt a one-time AES key, which is then used to decrypt the main data payload.
+
+## Setup & Running
+
+**1. Install Dependencies:**
+```bash
+pip install -r requirements.txt