Adds Better Stack uptime monitoring details

Documents the use of Better Stack for production uptime monitoring,
including monitored endpoints, alerting setup, and evidence location.

monitoring/README.md

@@ -34,3 +34,25 @@ Shows the 90th percentile of model prediction time.
 ```promql
 hopcroft_prediction_processing_seconds{quantile="0.9"}
 ```
+
+---
+
+## Uptime Monitoring (Better Stack)
+
+We used Better Stack Uptime to monitor the availability of the production deployment hosted on Hugging Face Spaces.
+
+**Base URL**
+- https://dacrow13-hopcroft-skill-classification.hf.space
+
+**Monitored endpoints**
+- https://dacrow13-hopcroft-skill-classification.hf.space/health
+- https://dacrow13-hopcroft-skill-classification.hf.space/openapi.json
+- https://dacrow13-hopcroft-skill-classification.hf.space/docs
+
+**Checks and alerts**
+- Monitors are configured to run from multiple locations.
+- Email notifications are enabled for failures.
+- A failure scenario was tested to confirm Better Stack reports the server error details.
+
+**Evidence**
+- Screenshots are available in `monitoring/screenshots/`.