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>

languages/wp-prometheus-de_CH.po

@@ -3,7 +3,7 @@
 # This file is distributed under the GPL v2 or later.
 msgid ""
 msgstr ""
-"Project-Id-Version: WP Prometheus 0.4.0\n"
+"Project-Id-Version: WP Prometheus 0.4.2\n"
 "Report-Msgid-Bugs-To: https://src.bundespruefstelle.ch/magdev/wp-prometheus/issues\n"
 "POT-Creation-Date: 2026-02-02T00:00:00+00:00\n"
 "PO-Revision-Date: 2026-02-02T00:00:00+00:00\n"
@@ -879,3 +879,43 @@ msgstr "APCu funktioniert. Speicher: %s belegt."
 #: src/Metrics/StorageFactory.php
 msgid "APCu fetch operation returned unexpected value."
 msgstr "APCu-Abrufoperation hat unerwarteten Wert zurueckgegeben."
+
+#: src/Admin/Settings.php
+msgid "Early Mode"
+msgstr "Fruehzeitiger Modus"
+
+#: src/Admin/Settings.php
+msgid "Early mode intercepts /metrics requests before full WordPress initialization. This prevents memory exhaustion issues caused by some plugins (e.g., Twig-based themes/plugins) but disables the wp_prometheus_collect_metrics hook for custom metrics."
+msgstr "Der fruehzeitige Modus faengt /metrics-Anfragen vor der vollstaendigen WordPress-Initialisierung ab. Dies verhindert Speichererschoepfungsprobleme, die durch einige Plugins verursacht werden (z.B. Twig-basierte Themes/Plugins), deaktiviert jedoch den wp_prometheus_collect_metrics-Hook fuer benutzerdefinierte Metriken."
+
+#: src/Admin/Settings.php
+msgid "Early mode is configured via WP_PROMETHEUS_DISABLE_EARLY_MODE environment variable. Admin settings will be ignored."
+msgstr "Der fruehzeitige Modus ist ueber die Umgebungsvariable WP_PROMETHEUS_DISABLE_EARLY_MODE konfiguriert. Admin-Einstellungen werden ignoriert."
+
+#: src/Admin/Settings.php
+msgid "Disable Early Mode"
+msgstr "Fruehzeitigen Modus deaktivieren"
+
+#: src/Admin/Settings.php
+msgid "Disable early metrics interception"
+msgstr "Fruehzeitige Metriken-Abfangung deaktivieren"
+
+#: src/Admin/Settings.php
+msgid "When disabled, metrics are collected through normal WordPress template loading. This enables the wp_prometheus_collect_metrics hook for custom metrics but may cause issues with some plugins."
+msgstr "Wenn deaktiviert, werden Metriken ueber das normale WordPress-Template-Laden erfasst. Dies aktiviert den wp_prometheus_collect_metrics-Hook fuer benutzerdefinierte Metriken, kann jedoch Probleme mit einigen Plugins verursachen."
+
+#: src/Admin/Settings.php
+msgid "Early mode is active (this request was served via early interception)"
+msgstr "Fruehzeitiger Modus ist aktiv (diese Anfrage wurde ueber fruehzeitige Abfangung verarbeitet)"
+
+#: src/Admin/Settings.php
+msgid "Early mode is disabled"
+msgstr "Fruehzeitiger Modus ist deaktiviert"
+
+#: src/Admin/Settings.php
+msgid "Early mode is enabled (active for /metrics requests)"
+msgstr "Fruehzeitiger Modus ist aktiviert (aktiv fuer /metrics-Anfragen)"
+
+#: src/Admin/Settings.php
+msgid "Clear all accumulated runtime metric data (HTTP requests, database queries). This is useful for testing or starting fresh."
+msgstr "Alle gesammelten Laufzeit-Metrikdaten loeschen (HTTP-Anfragen, Datenbank-Abfragen). Dies ist nuetzlich zum Testen oder fuer einen Neuanfang."

languages/wp-prometheus.pot

@@ -2,7 +2,7 @@
 # This file is distributed under the GPL v2 or later.
 msgid ""
 msgstr ""
-"Project-Id-Version: WP Prometheus 0.4.0\n"
+"Project-Id-Version: WP Prometheus 0.4.2\n"
 "Report-Msgid-Bugs-To: https://src.bundespruefstelle.ch/magdev/wp-prometheus/issues\n"
 "POT-Creation-Date: 2026-02-02T00:00:00+00:00\n"
 "MIME-Version: 1.0\n"
@@ -876,3 +876,43 @@ msgstr ""
 #: src/Metrics/StorageFactory.php
 msgid "APCu fetch operation returned unexpected value."
 msgstr ""
+
+#: src/Admin/Settings.php
+msgid "Early Mode"
+msgstr ""
+
+#: src/Admin/Settings.php
+msgid "Early mode intercepts /metrics requests before full WordPress initialization. This prevents memory exhaustion issues caused by some plugins (e.g., Twig-based themes/plugins) but disables the wp_prometheus_collect_metrics hook for custom metrics."
+msgstr ""
+
+#: src/Admin/Settings.php
+msgid "Early mode is configured via WP_PROMETHEUS_DISABLE_EARLY_MODE environment variable. Admin settings will be ignored."
+msgstr ""
+
+#: src/Admin/Settings.php
+msgid "Disable Early Mode"
+msgstr ""
+
+#: src/Admin/Settings.php
+msgid "Disable early metrics interception"
+msgstr ""
+
+#: src/Admin/Settings.php
+msgid "When disabled, metrics are collected through normal WordPress template loading. This enables the wp_prometheus_collect_metrics hook for custom metrics but may cause issues with some plugins."
+msgstr ""
+
+#: src/Admin/Settings.php
+msgid "Early mode is active (this request was served via early interception)"
+msgstr ""
+
+#: src/Admin/Settings.php
+msgid "Early mode is disabled"
+msgstr ""
+
+#: src/Admin/Settings.php
+msgid "Early mode is enabled (active for /metrics requests)"
+msgstr ""
+
+#: src/Admin/Settings.php
+msgid "Clear all accumulated runtime metric data (HTTP requests, database queries). This is useful for testing or starting fresh."
+msgstr ""