Distinct files are allowed to start with underscore (#58)

* feature: deeper dynamic pages
closes #4

* build: upgrade build packages for downstream deps

* tweak: phpstorm analysis

* test: isolate issue #57

* feature: allow underscore files
closes #57

src/Assembly.php

@@ -2,6 +2,7 @@
 namespace Gt\Routing;
 
 use Countable;
+use Gt\Routing\Path\FileMatch\MagicFileMatch;
 use Iterator;
 
 /** @implements Iterator<int, string> */
@@ -36,7 +37,8 @@ public function remove(string $path):void {
 	public function containsDistinctFile():bool {
 		foreach($this->pathList as $path) {
 			$fileName = pathinfo($path, PATHINFO_FILENAME);
-			if($fileName[0] !== "_") {
+			if(!str_starts_with($fileName, "_")
+			|| !in_array($fileName, MagicFileMatch::MAGIC_FILENAME_ARRAY)) {
 				return true;
 			}
 		}

test/phpunit/AssemblyTest.php

@@ -92,4 +92,18 @@ public function testContainsDistinctFile():void {
 
 		self::assertTrue($sut->containsDistinctFile());
 	}
+
+	public function testContainsDistinctFile_magicFilename():void {
+		$pathList = [
+			"/var/www/_header.html",
+			"/var/www/_new.html",
+			"/var/www/_footer.html",
+		];
+		$sut = new Assembly();
+		foreach($pathList as $path) {
+			$sut->add($path);
+		}
+
+		self::assertTrue($sut->containsDistinctFile());
+	}
 }