feat: rebuild Guanghan topology diagram

Co-Authored-By: Codex <noreply@openai.com>

tests/test_guanghan_topology_demo.py

@@ -65,11 +65,13 @@ class GuanghanTopologySourceTests(unittest.TestCase):
 
     def test_every_clickable_module_has_dimensions_field(self) -> None:
         for module_id in CLICKABLE_MODULES:
-            self.assertRegex(
+            match = re.search(
+                rf'"{re.escape(module_id)}"\s*:\s*\{{(.*?)\n    \}}(?:,|\n)',
                 self.html,
-                rf'"{re.escape(module_id)}"\s*:\s*\{{.*?dimensions\s*:',
-                msg=f"{module_id} is missing dimensions",
+                flags=re.S,
             )
+            self.assertIsNotNone(match, msg=f"{module_id} detail object is missing")
+            self.assertIn("dimensions:", match.group(1), msg=f"{module_id} is missing dimensions")
 
     def test_timeline_contains_only_the_two_real_corridors(self) -> None:
         for incorrect in (