fix: print platform detail lists as plain text

scripts/generate_site.py

@@ -2145,16 +2145,23 @@ def _render_platform_details(profile: dict) -> list[str]:
             if isinstance(pv, dict):
                 lines.append(f"    **{pk}:**")
                 for sk, sv in pv.items():
-                    lines.append(f"    - {sk}: {sv}")
-            elif isinstance(pv, list):
-                lines.append(f"    **{pk}:** {', '.join(str(x) for x in pv)}")
+                    lines.append(f"    - {sk}: {_plain_value(sv)}")
             else:
-                lines.append(f"    **{pk}:** {pv}")
+                lines.append(f"    **{pk}:** {_plain_value(pv)}")
         lines.append("")
 
     return lines
 
 
+def _plain_value(value: object) -> str:
+    """A scalar or a list of scalars as a reader writes it, not as Python does."""
+    if isinstance(value, bool):
+        return "yes" if value else "no"
+    if isinstance(value, (list, tuple)):
+        return ", ".join(_plain_value(item) for item in value)
+    return _escape_tags(str(value))
+
+
 def _render_structured_blocks(profile: dict) -> list[str]:
     """Every remaining structured field, as a collapsible section."""
     lines: list[str] = []

tests/test_site_validation.py

@@ -73,6 +73,22 @@ class WikiSourceHeadings(unittest.TestCase):
         self.assertEqual(offenders, [])
 
 
+class PlatformDetails(unittest.TestCase):
+    def test_lists_and_flags_read_as_prose(self):
+        import generate_site
+
+        lines = generate_site._render_platform_details(
+            {"platform_details": {"megacd": {
+                "extensions_tried": [".bin", ".zip"],
+                "hle_available": False,
+                "root": "<system_dir>/x",
+            }}}
+        )
+        self.assertIn("    - extensions_tried: .bin, .zip", lines)
+        self.assertIn("    - hle_available: no", lines)
+        self.assertIn("    - root: &lt;system_dir>/x", lines)
+
+
 class RenderedSiteValidation(unittest.TestCase):
     def setUp(self) -> None:
         self.temp = tempfile.TemporaryDirectory(dir=TMP_ROOT)