Add Grafana dashboard and wp-prometheus integration (v0.7.5)

- Add example Grafana dashboard with 24 panels for license metrics
- Register dashboard with wp-prometheus via hook
- Add dashboard documentation with PromQL examples and alerting rules
- Update README with monitoring section

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

CHANGELOG.md

@@ -7,6 +7,28 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## [Unreleased]
 
+## [0.7.5] - 2026-02-03
+
+### Added
+
+- **Grafana Dashboard**: Example dashboard for license metrics monitoring
+  - 24 panels organized into 4 sections: License Overview, Downloads & Versions, API Metrics, Errors & Rate Limiting
+  - Template variables for data source and instance filtering
+  - Includes example Prometheus alerting rules
+- **WP Prometheus Dashboard Integration**: Dashboard automatically registered with wp-prometheus
+  - Appears in Settings > WP Prometheus > Dashboards when metrics are enabled
+  - Uses `wp_prometheus_register_dashboards` hook for seamless integration
+- Documentation for Grafana dashboard installation and PromQL query examples
+
+### New Files
+
+- `docs/grafana-dashboard.json` - Complete Grafana dashboard with 24 panels
+- `docs/grafana-dashboard.md` - Installation and usage documentation
+
+### Changed
+
+- Updated README with "Monitoring with Prometheus & Grafana" section
+
 ## [0.7.4] - 2026-02-03
 
 ### Added