feat: deepen skill test coverage — 52 → 247 cases across all 43 skills

Add 195 new test cases covering examples from SKILL.md, edge cases,
and parameter combinations. Create _skill.json for form-edit, skd-edit,
subsystem-edit. Add fixtures for negative validate cases. Fix
normalizeUuids in meta-validate/meta-info configs.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

tests/skills/cases/meta-compile/document-multiple-tabparts.json

@@ -0,0 +1,29 @@
+{
+  "name": "Документ с несколькими ТЧ и реквизитами",
+  "input": {
+    "type": "Document",
+    "name": "РеализацияТоваров",
+    "registerRecords": ["AccumulationRegister.Продажи"],
+    "attributes": [
+      "Организация: CatalogRef.Организации",
+      "Контрагент: CatalogRef.Контрагенты",
+      "Склад: CatalogRef.Склады",
+      "Валюта: CatalogRef.Валюты"
+    ],
+    "tabularSections": {
+      "Товары": [
+        "Номенклатура: CatalogRef.Номенклатура",
+        "Количество: Number(15,3)",
+        "Цена: Number(15,2)",
+        "Сумма: Number(15,2)"
+      ],
+      "Услуги": [
+        "Номенклатура: CatalogRef.Номенклатура",
+        "Сумма: Number(15,2)"
+      ]
+    }
+  },
+  "expect": {
+    "files": ["Documents/РеализацияТоваров.xml"]
+  }
+}