diff --git a/tests/skills/cases/db-create/false-success-no-ib.json b/tests/skills/cases/db-create/false-success-no-ib.json
new file mode 100644
index 00000000..63b3f3d0
--- /dev/null
+++ b/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
+}
diff --git a/tests/skills/cases/db-dump-cf/false-success-no-output.json b/tests/skills/cases/db-dump-cf/false-success-no-output.json
new file mode 100644
index 00000000..59b7c173
--- /dev/null
+++ b/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
+}
diff --git a/tests/skills/cases/db-run/early-exit.json b/tests/skills/cases/db-run/early-exit.json
new file mode 100644
index 00000000..31ae8ccc
--- /dev/null
+++ b/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
+}
diff --git a/tests/skills/runner.mjs b/tests/skills/runner.mjs
index 28d95a23..4454928b 100644
--- a/tests/skills/runner.mjs
+++ b/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);