feat: add role-*, subsystem-* tests (batches 4+5)

- role-compile, role-validate, role-info: 3 cases
- subsystem-compile, subsystem-validate, subsystem-info: 3 cases
- 34 tests across 22 skills, all passing

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

tests/skills/cases/subsystem-compile/basic.json

@@ -0,0 +1,18 @@
+{
+  "name": "Подсистема с объектами",
+  "preRun": [
+    {
+      "script": "meta-compile/scripts/meta-compile",
+      "input": { "type": "Catalog", "name": "Товары" },
+      "args": { "-JsonPath": "{inputFile}", "-OutputDir": "{workDir}" }
+    }
+  ],
+  "input": {
+    "name": "Склад",
+    "synonym": "Склад",
+    "objects": ["Catalogs.Товары"]
+  },
+  "expect": {
+    "files": ["Subsystems/Склад.xml"]
+  }
+}