Add ProjectZomboidServerLog (DebugLog-server.txt)

Concrete Log subclass for the engine debug log. Captures time, level,
and subsystem prefix per entry; stack-trace continuation lines attach
to the triggering ERROR entry via PatternParser's append-on-no-match
behaviour. Detectors: filename match on DebugLog-server.txt plus two
content signatures (the version=X.Y.Z+hash banner and the level/
subsystem/f/t/st header shape). Pattern constants live in
src/Pattern/ProjectZomboid/DebugServerPattern.php with named groups
ready for analyser use in phase B. Synthetic fixture under
test/src/Games/ProjectZomboid/fixtures/ uses zeroed identifiers and
placeholder paths.

src/Log/ProjectZomboid/ProjectZomboidServerLog.php

@@ -0,0 +1,54 @@
+<?php
+
+namespace IndifferentKetchup\Codex\Log\ProjectZomboid;
+
+use IndifferentKetchup\Codex\Analyser\AnalyserInterface;
+use IndifferentKetchup\Codex\Analyser\PatternAnalyser;
+use IndifferentKetchup\Codex\Detective\FilenameDetector;
+use IndifferentKetchup\Codex\Detective\WeightedSinglePatternDetector;
+use IndifferentKetchup\Codex\Parser\ParserInterface;
+use IndifferentKetchup\Codex\Parser\PatternParser;
+use IndifferentKetchup\Codex\Pattern\ProjectZomboid\DebugServerPattern;
+
+/**
+ * Project Zomboid engine debug log (DebugLog-server.txt).
+ *
+ * Multi-line format: ERROR entries are followed by tab-indented stack trace
+ * frames. PatternParser handles continuation by appending non-matching lines
+ * to the most recent Entry, which is exactly the behaviour we need.
+ */
+class ProjectZomboidServerLog extends ProjectZomboidLog
+{
+    public static function getDefaultParser(): ParserInterface
+    {
+        return static::makePatternParser(
+            DebugServerPattern::LINE,
+            [PatternParser::TIME, PatternParser::LEVEL, PatternParser::PREFIX]
+        );
+    }
+
+    public static function getDefaultAnalyser(): AnalyserInterface
+    {
+        return new PatternAnalyser();
+    }
+
+    public static function getDetectors(): array
+    {
+        return [
+            (new FilenameDetector())
+                ->setPattern('/DebugLog-server\.txt$/')
+                ->setWeight(0.95),
+            (new WeightedSinglePatternDetector())
+                ->setPattern('/version=\d+\.\d+\.\d+ [a-f0-9]{40}/')
+                ->setWeight(0.95),
+            (new WeightedSinglePatternDetector())
+                ->setPattern('/^\[\d{2}-\d{2}-\d{2} \d{2}:\d{2}:\d{2}\.\d{3}\] (?:LOG|WARN|ERROR):\s+\w+\s+f:\d+, t:\d+, st:[\d,]+>/m')
+                ->setWeight(0.80),
+        ];
+    }
+
+    public function getTitle(): string
+    {
+        return "Project Zomboid Debug Server Log";
+    }
+}

src/Pattern/ProjectZomboid/DebugServerPattern.php

@@ -0,0 +1,27 @@
+<?php
+
+namespace IndifferentKetchup\Codex\Pattern\ProjectZomboid;
+
+/**
+ * Regex constants for the Project Zomboid DebugLog-server.txt format.
+ *
+ * LINE captures, in order:
+ *   1. time   (DD-MM-YY HH:MM:SS.mmm)
+ *   2. level  (LOG | WARN | ERROR | INFO | DEBUG)
+ *   3. prefix (subsystem name, e.g. General, Mod, WorldGen)
+ *
+ * The f:/t:/st: metadata and trailing message body are intentionally not
+ * captured by the parser; analyzers reach into the Line raw text directly.
+ */
+class DebugServerPattern
+{
+    public const string LINE = '/^\[(\d{2}-\d{2}-\d{2} \d{2}:\d{2}:\d{2}\.\d{3})\]\s+(\w+)\s*:\s+(\S+)\s+f:\d+,\s+t:\d+,\s+st:[\d,]+>\s+.*$/';
+
+    public const string VERSION = '/version=(?<version>\S+) (?<hash>[a-f0-9]{40}) (?<date>\d{4}-\d{2}-\d{2}) (?<time>\d{2}:\d{2}:\d{2})/';
+
+    public const string MOD_LOAD = '/loading (?<mod>[A-Za-z0-9_]+)\.?$/';
+
+    public const string MOD_MISSING = '/required mod "(?<mod>[^"]+)" not found/';
+
+    public const string EXCEPTION_HEADER = '/^\[\d{2}-\d{2}-\d{2} \d{2}:\d{2}:\d{2}\.\d{3}\]\s+ERROR:.*Exception thrown/';
+}