Initial plugin setup (v0.0.1)

- Create initial WordPress plugin structure
- Add Prometheus metrics collector with default metrics
- Implement authenticated /metrics endpoint with Bearer token
- Add license management integration
- Create admin settings page under Settings > Metrics
- Set up Gitea CI/CD pipeline for automated releases
- Add extensibility via wp_prometheus_collect_metrics hook

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

CHANGELOG.md

@@ -0,0 +1,32 @@
+# Changelog
+
+All notable changes to this project will be documented in this file.
+
+The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
+and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
+
+## [0.0.1] - 2026-02-01
+
+### Added
+
+- Initial plugin structure and bootstrap
+- Main plugin class with singleton pattern
+- License management integration with wc-licensed-product-client
+- Prometheus metrics collector with default WordPress metrics:
+  - `wordpress_info` - WordPress installation information
+  - `wordpress_users_total` - Total users by role
+  - `wordpress_posts_total` - Total posts by type and status
+  - `wordpress_comments_total` - Total comments by status
+  - `wordpress_plugins_total` - Total plugins by status
+- Authenticated `/metrics` endpoint with Bearer token
+- Admin settings page under Settings > Metrics
+- Extensibility via `wp_prometheus_collect_metrics` action hook
+- Gitea CI/CD pipeline for automated releases
+- Comprehensive documentation (README.md, PLAN.md, CLAUDE.md)
+
+### Security
+
+- Bearer token authentication for metrics endpoint
+- Nonce verification for all AJAX requests
+- Capability checks for admin operations
+- Input sanitization and output escaping