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-validate/valid-info-register.json

@@ -0,0 +1,18 @@
+{
+  "name": "Корректный регистр сведений проходит валидацию",
+  "setup": "empty-config",
+  "preRun": [
+    {
+      "script": "meta-compile/scripts/meta-compile",
+      "input": {
+        "type": "InformationRegister",
+        "name": "КурсыВалют",
+        "periodicity": "Day",
+        "dimensions": ["Валюта: CatalogRef.Валюты"],
+        "resources": ["Курс: Number(15,4)"]
+      },
+      "args": { "-JsonPath": "{inputFile}", "-OutputDir": "{workDir}" }
+    }
+  ],
+  "params": { "objectPath": "InformationRegisters/КурсыВалют" }
+}