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/information-register.json

@@ -0,0 +1,13 @@
+{
+  "name": "Регистр сведений с периодичностью",
+  "input": {
+    "type": "InformationRegister",
+    "name": "КурсыВалют",
+    "periodicity": "Day",
+    "dimensions": ["Валюта: CatalogRef.Валюты | master, mainFilter, denyIncomplete"],
+    "resources": ["Курс: Number(15,4)", "Кратность: Number(10,0)"]
+  },
+  "expect": {
+    "files": ["InformationRegisters/КурсыВалют.xml", "InformationRegisters/КурсыВалют/Ext/RecordSetModule.bsl"]
+  }
+}