Add ProjectZomboidAdminLog (admin.txt)

Free-form English message body with verb-dispatched analyser regexes
(ADDED_ITEM, ADDED_XP, GRANTED_ACCESS, CHANGED_OPTION,
RELOADED_OPTIONS, TELEPORTED). Parser captures only the timestamp,
since the admin name itself can include parentheses or whitespace.
Detectors: filename match plus content signatures on
'added item Base.X in Y's inventory' and 'granted ROLE access level on'.

src/Pattern/ProjectZomboid/AdminPattern.php

@@ -0,0 +1,28 @@
+<?php
+
+namespace IndifferentKetchup\Codex\Pattern\ProjectZomboid;
+
+/**
+ * Regex constants for the Project Zomboid admin.txt format.
+ *
+ * Free-form English: '[time] <admin> <verb> ...' Verb dispatch is left
+ * to the analyser layer. The admin name itself can contain parentheses
+ * (Nathan(Weerd)) or whitespace (silly goose) so the parser captures
+ * only the timestamp.
+ */
+class AdminPattern
+{
+    public const string LINE = '/^\[(\d{2}-\d{2}-\d{2} \d{2}:\d{2}:\d{2}\.\d{3})\] .+\.$/';
+
+    public const string ADDED_ITEM = '/^(?<admin>.+?) added item (?<item>Base\.\S+) in (?<target>.+?)\'s inventory$/';
+
+    public const string ADDED_XP = '/^(?<admin>.+?) added (?<amount>[\d.]+) (?<skill>\S+) xp\'s to (?<target>.+)$/';
+
+    public const string GRANTED_ACCESS = '/^(?<admin>.+?) granted (?<level>\w+) access level on (?<target>.+)$/';
+
+    public const string CHANGED_OPTION = '/^(?<admin>.+?) changed option (?<option>\S+?)=(?<value>.+)$/';
+
+    public const string RELOADED_OPTIONS = '/^(?<admin>.+?) reloaded options$/';
+
+    public const string TELEPORTED = '/^(?<admin>.+?) teleported (?<target>.+?) to (?<x>\d+),(?<y>\d+),(?<z>-?\d+)$/';
+}