add live HF Space URL to README

Demo lives at huggingface.co/spaces/ub-aac-chatbot/aac-chatbot —
surface it near the top so anyone landing on the source doesn't
have to dig for the deployed instance, and update the Hosting
section's example git remote to the real Space URL.

README.md

@@ -15,6 +15,8 @@ A chatbot that **speaks as an AAC user, not to them.** You pick a persona — fo
 
 It's a training-free agentic RAG pipeline — a plain Python function chain with two branching points, torch matmul for retrieval, JSONL for logging. The goal was to keep every piece simple enough to read top-to-bottom in an afternoon.
 
+> **Live demo:** [huggingface.co/spaces/ub-aac-chatbot/aac-chatbot](https://huggingface.co/spaces/ub-aac-chatbot/aac-chatbot) — pick a persona, allow webcam access, and chat. First turn after a cold start adds ~3s for the one-time NLI model load; subsequent turns run at normal speed.
+
 ---
 
 ## Table of Contents
@@ -353,7 +355,7 @@ The repo doubles as an HF Space — `README.md` carries the YAML frontmatter HF
 1. Create a new Space on huggingface.co (Docker SDK, public).
 2. Add this repo as a remote:
    ```bash
-   git remote add space https://huggingface.co/spaces/<your-username>/aac-chatbot
+   git remote add space https://huggingface.co/spaces/ub-aac-chatbot/aac-chatbot
    git push space main
    ```
 3. In the Space's *Settings → Variables and secrets*, add the LLM-tier secrets (don't commit them):