refactor(tree_renderer, lint): use shared frontmatter module

Author: KylinMountain

openkb/lint.py

@@ -15,6 +15,7 @@
 
 import yaml
 
+from openkb import frontmatter
 from openkb.schema import PAGE_CONTENT_DIRS
 
 # Matches [[wikilink]] or [[subdir/link]]
@@ -500,16 +501,7 @@ def find_missing_okf_fields(wiki: Path) -> list[str]:
         if not subdir_path.exists():
             continue
         for path in sorted(subdir_path.glob("*.md")):
-            text = _read_md(path)
-            fm = None
-            if text.startswith("---"):
-                end = text.find("\n---", 3)
-                if end != -1:
-                    try:
-                        fm = yaml.safe_load(text[3:end].strip("\n"))
-                    except yaml.YAMLError:
-                        fm = None
-            fm = fm if isinstance(fm, dict) else {}
+            fm = frontmatter.parse(_read_md(path))
             rel = path.relative_to(wiki)
             type_val = fm.get("type")
             if not (isinstance(type_val, str) and type_val.strip()):

openkb/tree_renderer.py

@@ -1,21 +1,16 @@
 """Markdown renderers for PageIndex tree structures."""
 from __future__ import annotations
 
-import json
-
-
-def _yaml_kv_line(key: str, value: str) -> str:
-    """Return a single YAML key-value line with the value JSON-quoted."""
-    return f"{key}: {json.dumps(value, ensure_ascii=False)}"
+from openkb import frontmatter
 
 
 def _yaml_frontmatter(source_name: str, doc_id: str, description: str = "") -> str:
     """Return a YAML frontmatter block for a PageIndex wiki page."""
-    lines = [_yaml_kv_line("type", "Summary")]
+    lines = [frontmatter.kv_line("type", "Summary")]
     if description:
-        lines.append(_yaml_kv_line("description", description))
+        lines.append(frontmatter.kv_line("description", description))
     lines.append("doc_type: pageindex")
-    lines.append(_yaml_kv_line("full_text", f"sources/{source_name}.json"))
+    lines.append(frontmatter.kv_line("full_text", f"sources/{source_name}.json"))
     return "---\n" + "\n".join(lines) + "\n---\n"