test(skills): регресс ложного успеха через fake-платформу + гейт runtimeOnly

Кейсы с .cmd-заглушкой платформы (Start-Process исполняет .cmd) проверяют, что
db-create/db-run/db-dump-cf не рапортуют успех, когда платформа вышла с 0/умерла
без артефакта. Гейт runtimeOnly пропускает кейс на несовместимом порту (py
list-exec не запускает .cmd) — гоняются под powershell на Windows.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

tests/skills/cases/db-create/false-success-no-ib.json

@@ -0,0 +1,9 @@
+{
+  "name": "Ложный успех: платформа вернула 0 без 1Cv8.1CD (fake platform)",
+  "runtimeOnly": "powershell",
+  "preRun": [
+    { "writeFile": { "path": "fake.cmd", "content": "@echo off\r\nexit /b 0\r\n" } }
+  ],
+  "args_extra": ["-V8Path", "{workDir}\\fake.cmd", "-InfoBasePath", "{workDir}\\ib"],
+  "expectError": true
+}

tests/skills/cases/db-dump-cf/false-success-no-output.json

@@ -0,0 +1,9 @@
+{
+  "name": "Ложный успех: платформа вернула 0 без выходного файла (fake platform)",
+  "runtimeOnly": "powershell",
+  "preRun": [
+    { "writeFile": { "path": "fake.cmd", "content": "@echo off\r\nexit /b 0\r\n" } }
+  ],
+  "args_extra": ["-V8Path", "{workDir}\\fake.cmd", "-InfoBasePath", "{workDir}\\ib", "-OutputFile", "{workDir}\\out.cf"],
+  "expectError": true
+}

tests/skills/cases/db-run/early-exit.json

@@ -0,0 +1,9 @@
+{
+  "name": "Ранний выход: процесс умер в контрольном окне, не должно быть launched (fake platform)",
+  "runtimeOnly": "powershell",
+  "preRun": [
+    { "writeFile": { "path": "fake.cmd", "content": "@echo off\r\nexit /b 1\r\n" } }
+  ],
+  "args_extra": ["-V8Path", "{workDir}\\fake.cmd", "-InfoBasePath", "{workDir}\\ib"],
+  "expectError": true
+}

tests/skills/runner.mjs

@@ -539,6 +539,12 @@ async function runCaseAsync(testCase, opts) {
   let workDir = null;
   let inputFile = null;
 
+  // runtimeOnly: gate a case to a single port (e.g. a .cmd fake platform only runs via
+  // PowerShell's Start-Process; python's list-exec can't launch it). Skipped elsewhere.
+  if (caseData.runtimeOnly && caseData.runtimeOnly !== opts.runtime) {
+    return { id: testCase.id, skill: testCase.skillDir, name: testCase.name, passed: true, skipped: true, errors: [], elapsed: '0.0s' };
+  }
+
   try {
     const skillCasesDir = join(CASES, testCase.skillDir);
     const fixturePath = ensureSetup(setupName, opts.runtime, skillCasesDir);