fix: handle host-prefixed root path in PublicPathMatcher

The host-prefix regex required at least one character after the slash
(/\+.+/), so a pattern like 'code.example.com/' was silently dropped
instead of matching the root path '/'. Changed \+.+ to \+.* so the
trailing slash alone is accepted as the path '/'.

Added tests covering the exact bug scenario from PUBLIC_PATHS
config: 'code.digitaladapt.com/,code.digitaladapt.com/public/**'

src/Service/PublicPathMatcher.php

@@ -79,7 +79,7 @@ final readonly class PublicPathMatcher implements PublicPathMatcherInterface
             $host = null;
             $path = $entry;
 
-            if (preg_match('/^([a-z0-9.-]+)(\/.+)$/i', $entry, $m)) {
+            if (preg_match('/^([a-z0-9.-]+)(\/.*)$/i', $entry, $m)) {
                 $host = strtolower($m[1]);
                 $path = $m[2];
             }

tests/Unit/Service/PublicPathMatcherTest.php

@@ -176,6 +176,25 @@ final class PublicPathMatcherTest extends TestCase
         self::assertFalse($matcher->matches('other.host', '/public/repo'));
     }
 
+    public function testDomainPrefixedRootPathMatchesRoot(): void
+    {
+        // host/  — the trailing slash is the entire path, nothing after it
+        $matcher = new PublicPathMatcher('code.example.com/');
+        self::assertTrue($matcher->matches('code.example.com', '/'));
+        self::assertFalse($matcher->matches('code.example.com', '/public'));
+        self::assertFalse($matcher->matches('other.example.com', '/'));
+    }
+
+    public function testDomainPrefixedRootWithOtherPatterns(): void
+    {
+        // The exact scenario from the bug report
+        $matcher = new PublicPathMatcher('code.example.com/,code.example.com/public/**');
+        self::assertTrue($matcher->matches('code.example.com', '/'));
+        self::assertTrue($matcher->matches('code.example.com', '/public/repo'));
+        self::assertFalse($matcher->matches('code.example.com', '/private'));
+        self::assertFalse($matcher->matches('other.example.com', '/'));
+    }
+
     public function testDomainPrefixIsCaseInsensitive(): void
     {
         $matcher = new PublicPathMatcher('Code.Example.COM/public/**');