feat: Add option to disable early mode (v0.4.2)

- Add wp_prometheus_disable_early_mode option in admin settings
- Support WP_PROMETHEUS_DISABLE_EARLY_MODE environment variable
- Add Early Mode section in Metrics tab with status indicator
- Allow users to enable wp_prometheus_collect_metrics hook

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

CHANGELOG.md

@@ -5,6 +5,19 @@ 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).
 
+## [0.4.2] - 2026-02-02
+
+### Added
+
+- Option to disable early mode in admin settings (Metrics tab)
+- Support for `WP_PROMETHEUS_DISABLE_EARLY_MODE` environment variable
+- Early mode status display in settings
+
+### Changed
+
+- Early mode can now be disabled for users who need the `wp_prometheus_collect_metrics` hook for custom metrics
+- Updated translations with new early mode strings (English and German)
+
 ## [0.4.1] - 2026-02-02
 
 ### Fixed