Update Space card: honest demo framing (provider-agnostic; stub for keyless demo)

README.md

@@ -11,7 +11,9 @@ short_description: AI e-commerce support automation + ROI dashboard
 
 # SupportCopilot
 
-**An AI agent that automates first-line e-commerce customer support and proves the ROI — runs end-to-end with zero paid API keys.**
+**An AI agent that automates first-line e-commerce customer support and proves the ROI — grounded in your own catalog + policies, with a provider-agnostic LLM layer.**
+
+> **Demo note:** the deflection and ROI figures are measured on a seeded 20-ticket eval set; the public demo runs a deterministic stub (add an `ANTHROPIC_API_KEY` / `OPENAI_API_KEY` for a live model).
 
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