diff --git a/scripts/check_harness.py b/scripts/check_harness.py
index 8f82dcd..d363d52 100644
--- a/scripts/check_harness.py
+++ b/scripts/check_harness.py
@@ -165,6 +165,16 @@ def check_task_template(errors: list[str], root: Path = ROOT) -> None:
         errors.append(f"单元任务模板缺少：{section}")
 
 
+def core_mapping_errors(configured_mappings: dict[str, str]) -> list[str]:
+    errors: list[str] = []
+    for page, expected_path in CORE_PAGE_PATHS.items():
+        if configured_mappings.get(page) != expected_path:
+            errors.append(
+                f"核心 Wiki 页面映射缺失或路径错误：{page} -> {expected_path}"
+            )
+    return errors
+
+
 def check_wiki_mirrors(errors: list[str]) -> None:
     """检查每份本地文档都有显式映射和可追踪的镜像头。"""
 
@@ -175,11 +185,7 @@ def check_wiki_mirrors(errors: list[str]) -> None:
         return
 
     configured_mappings = {mapping.page: mapping.path for mapping in config.mappings}
-    for page, expected_path in CORE_PAGE_PATHS.items():
-        if configured_mappings.get(page) != expected_path:
-            errors.append(
-                f"核心 Wiki 页面映射缺失或路径错误：{page} -> {expected_path}"
-            )
+    errors.extend(core_mapping_errors(configured_mappings))
 
     mapped_paths = {mapping.path for mapping in config.mappings}
     actual_paths = {
diff --git a/tests/test_harness_docs.py b/tests/test_harness_docs.py
index 79f4f32..c15cb31 100644
--- a/tests/test_harness_docs.py
+++ b/tests/test_harness_docs.py
@@ -14,6 +14,7 @@ from check_harness import (  # noqa: E402
     REQUIRED_FILES,
     check_core_documents,
     check_task_template,
+    core_mapping_errors,
     missing_sections,
 )
 from wiki_docs import load_config  # noqa: E402
@@ -39,6 +40,13 @@ class CoreDocumentTests(unittest.TestCase):
         for page, path in CORE_PAGE_PATHS.items():
             self.assertEqual(mappings.get(page), path)
 
+    def test_missing_or_wrong_core_mapping_is_reported(self) -> None:
+        errors = core_mapping_errors({"Home": "docs/wrong.md"})
+        self.assertTrue(any("Home -> docs/README.md" in error for error in errors))
+        self.assertTrue(
+            any("Architecture-and-Code-Map" in error for error in errors)
+        )
+
 
 class TaskTemplateTests(unittest.TestCase):
     def test_task_template_requires_document_impact(self) -> None: