docs: Guides für Farben, Variablen, Theme-Optionen, Schriften, Snapshots und Schleifen-Inhalte

Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com>

tests/Unit/Guides/ToolNamingTest.php

@@ -130,6 +130,17 @@ final class ToolNamingTest extends TestCase
         self::assertSame($files, $listedTopics);
     }
 
+    /** Every indirect tool is named in the overview (the only place a client learns which `lit/` tools exist). */
+    public function testOverviewNamesEveryIndirectTool(): void
+    {
+        $overview = (string) file_get_contents(dirname(__DIR__, 3) . '/docs/guides/overview.md');
+        preg_match_all('#`lit/([a-z]+(?:-[a-z]+)*)`#', $overview, $named);
+
+        $indirect = array_keys(array_filter(self::abilities(), static fn (bool $direct): bool => ! $direct));
+        self::assertNotEmpty($indirect);
+        self::assertSame([], array_values(array_diff($indirect, $named[1])), 'indirect tools missing in overview.md');
+    }
+
     public function testOverviewListsExactlyTheDirectTools(): void
     {
         $overview = (string) file_get_contents(dirname(__DIR__, 3) . '/docs/guides/overview.md');