feat: add interface-*, cfe-* tests (batches 8+9) — all skills covered

- interface-edit, interface-validate: 2 cases
- cfe-init, cfe-validate, cfe-borrow, cfe-patch-method, cfe-diff: 5 cases
- runner: switch params in preRun (true = no value)
- Findings: interface-edit JSON-in-JSON, cfe-patch-method type naming

52 tests across 40 skills, all passing (~48s).

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

tests/skills/cases/cfe-patch-method/after-handler.json

@@ -0,0 +1,24 @@
+{
+  "name": "Перехватчик После для модуля объекта",
+  "preRun": [
+    {
+      "script": "meta-compile/scripts/meta-compile",
+      "input": { "type": "Catalog", "name": "Товары" },
+      "args": { "-JsonPath": "{inputFile}", "-OutputDir": "{workDir}" }
+    },
+    {
+      "script": "cfe-init/scripts/cfe-init",
+      "args": { "-Name": "Тест", "-OutputDir": "{workDir}/ext", "-ConfigPath": "{workDir}" }
+    },
+    {
+      "script": "cfe-borrow/scripts/cfe-borrow",
+      "args": { "-ExtensionPath": "{workDir}/ext", "-ConfigPath": "{workDir}", "-Object": "Catalog.Товары" }
+    }
+  ],
+  "params": {
+    "extensionPath": "ext",
+    "modulePath": "Catalog.Товары.ObjectModule",
+    "methodName": "ПриЗаписи",
+    "interceptorType": "After"
+  }
+}