fix: add required HF Spaces YAML header to README.md

README.md

@@ -1,3 +1,14 @@
+---
+title: Advanced Fraud Analyst
+emoji: 🔍
+colorFrom: red
+colorTo: orange
+sdk: streamlit
+sdk_version: "1.28.1"
+app_file: app.py
+pinned: false
+---
+
 # Advanced Fraud Analyst
 
 ## What it does
@@ -22,7 +33,7 @@ A 60–90s demo GIF or Loom video should be placed here to showcase basic usage.
 ## Eval results
 | metric      | accuracy | groundedness | latency (ms) | cost/query | cache hit rate |
 | ----------- | -------- | ------------ | ------------ | ---------- | -------------- |
-| example run | 0.92     | 0.95         | 850          | $0.002    | 80%            |
+| example run | 0.92     | 0.95         | 850          | $0.002     | 80%            |
 
 ## Safety
 * Handles PII via mode-switching and redaction.
@@ -35,4 +46,4 @@ Current evaluations are synthetic. Real datasets, richer adversarial prompts, an
 See [metrics/fastapi_metrics.png](metrics/fastapi_metrics.png) for p50/p95 latency, cost per query, and cache hit rate screenshots.
 
 ## Commit signal
-Ship small daily. Open issues with labels (`bug`, `feature`, `eval`) and close them with PRs tied to metrics improvements.
+Ship small daily. Open issues with labels (`bug`, `feature`, `eval`) and close them with PRs tied to metrics improvements.