feat(seo): add security.txt, humans.txt, Schema.org JSON-LD

public/.well-known/security.txt

@@ -0,0 +1,6 @@
+Contact: mailto:admin@pushkinohistory.ru
+Contact: https://pushkinohistory.ru/privacy/
+Expires: 2027-05-21T00:00:00.000Z
+Preferred-Languages: ru, en
+Canonical: https://pushkinohistory.ru/.well-known/security.txt
+Policy: https://pushkinohistory.ru/privacy/

public/humans.txt

@@ -0,0 +1,10 @@
+/* SITE */
+Site: История города Пушкино — pushkinohistory.ru
+Last update: 2026-05-21
+Standards: HTML5, CSS3, RSS 2.0
+Components: Astro 6, nginx 1.29
+Software: Docker, Gitea Actions
+
+/* TEAM */
+Maintained by: HHIVP
+Contact: admin@pushkinohistory.ru