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/cf-edit/add-default-role.json

@@ -0,0 +1,13 @@
+{
+  "name": "Добавление роли по умолчанию",
+  "preRun": [
+    {
+      "script": "cf-edit/scripts/cf-edit",
+      "input": [{ "operation": "add-childObject", "value": "Role.ПолныеПрава" }],
+      "args": { "-ConfigPath": "{workDir}", "-DefinitionFile": "{inputFile}" }
+    }
+  ],
+  "input": [
+    { "operation": "add-defaultRole", "value": "ПолныеПрава" }
+  ]
+}