[CI]Skip failing text_to_image README examples in CI due to subprocess exit issue (#3190)

Signed-off-by: wangyu <410167048@qq.com>

tests/examples/offline_inference/test_text_to_image.py

@@ -27,9 +27,27 @@ def _skip_readme_snippet(language: str, code: str, h2_title: str) -> tuple[bool,
 
 README_SNIPPETS = ReadmeSnippet.extract_readme_snippets(README_PATH, skipif=_skip_readme_snippet)
 
+# Track: https://github.com/vllm-project/vllm-omni/issues/3123 — CLI example subprocess exit 1 in CI; re-enable when fixed.
+_SKIP_T2I_SNIPPET_IDS = frozenset(
+    {
+        "quick_start_002",
+        "more_cli_examples_001",
+        "more_cli_examples_002",
+        "more_cli_examples_003",
+        "more_cli_examples_007",
+        "more_cli_examples_008",
+    }
+)
+_SKIP_T2I_REASON = (
+    "Skipped: text_to_image README examples failing in CI (subprocess exit 1). "
+    "See https://github.com/vllm-project/vllm-omni/issues/3123"
+)
+
 
 @pytest.mark.parametrize("snippet", README_SNIPPETS, ids=lambda snippet: snippet.test_id)
 def test_text_to_image(snippet: ReadmeSnippet, example_runner: ExampleRunner):
+    if snippet.test_id in _SKIP_T2I_SNIPPET_IDS:
+        pytest.skip(_SKIP_T2I_REASON)
     should_skip, reason = snippet.skip
     if should_skip:
         pytest.skip(reason)