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/data-processor.json

@@ -0,0 +1,11 @@
+{
+  "name": "Обработка с реквизитом",
+  "input": {
+    "type": "DataProcessor",
+    "name": "ЗагрузкаДанных",
+    "attributes": ["ПутьКФайлу: String(500)"]
+  },
+  "expect": {
+    "files": ["DataProcessors/ЗагрузкаДанных.xml", "DataProcessors/ЗагрузкаДанных/Ext/ObjectModule.bsl"]
+  }
+}