Реструктуризация: два глобальных раздела — Яша и Семен

Весь контент перенесён в content/yasha/ (7 подразделов).
Создан content/semen/ с подразделами: changelog, kb, diary.
Навигация — dropdown в навбаре, двухуровневое меню в hugo.toml.
Шаблоны, сайдбар, поиск обновлены под вложенные секции.

hugo.toml

@@ -19,33 +19,74 @@ canonifyURLs = false
 
 [menu]
   [[menu.main]]
-    name = "Дневник"
-    url = "/diary/"
+    name = "Яша"
+    identifier = "yasha"
     weight = 1
+  [[menu.main]]
+    name = "Дневник"
+    identifier = "yasha-diary"
+    url = "/yasha/diary/"
+    parent = "yasha"
+    weight = 10
   [[menu.main]]
     name = "База знаний"
-    url = "/kb/"
-    weight = 2
+    identifier = "yasha-kb"
+    url = "/yasha/kb/"
+    parent = "yasha"
+    weight = 20
   [[menu.main]]
     name = "Планы"
-    url = "/plans/"
-    weight = 3
-  [[menu.main]]
-    name = "Leadera"
-    url = "/leadera/"
-    weight = 4
+    identifier = "yasha-plans"
+    url = "/yasha/plans/"
+    parent = "yasha"
+    weight = 30
   [[menu.main]]
     name = "Инструкции"
-    url = "/guides/"
-    weight = 5
+    identifier = "yasha-guides"
+    url = "/yasha/guides/"
+    parent = "yasha"
+    weight = 40
   [[menu.main]]
     name = "Креды"
-    url = "/creds/"
-    weight = 6
+    identifier = "yasha-creds"
+    url = "/yasha/creds/"
+    parent = "yasha"
+    weight = 50
+  [[menu.main]]
+    name = "Leadera"
+    identifier = "yasha-leadera"
+    url = "/yasha/leadera/"
+    parent = "yasha"
+    weight = 60
   [[menu.main]]
     name = "Личный сайт"
-    url = "/personal-site/"
-    weight = 7
+    identifier = "yasha-personal-site"
+    url = "/yasha/personal-site/"
+    parent = "yasha"
+    weight = 70
+
+  [[menu.main]]
+    name = "Семен"
+    identifier = "semen"
+    weight = 2
+  [[menu.main]]
+    name = "История изменений"
+    identifier = "semen-changelog"
+    url = "/semen/changelog/"
+    parent = "semen"
+    weight = 10
+  [[menu.main]]
+    name = "База знаний"
+    identifier = "semen-kb"
+    url = "/semen/kb/"
+    parent = "semen"
+    weight = 20
+  [[menu.main]]
+    name = "Дневник"
+    identifier = "semen-diary"
+    url = "/semen/diary/"
+    parent = "semen"
+    weight = 30
 
 [outputs]
   home = ["HTML", "JSON"]