feat(cli): scaffold entities/ in init and count it in status

- `openkb init` now creates wiki/entities/ alongside wiki/concepts/
- init seed index.md gains ## Entities between ## Concepts and ## Explorations,
  matching the _update_index template in compiler.py
- print_status subdirs list gains "entities" after "concepts"
- Tests updated: assert wiki/entities/ exists and index.md contains ## Entities;
  status test asserts "entities" appears in output

Author: KylinMountain

openkb/cli.py

@@ -538,11 +538,12 @@ def init(model, language):
     Path("wiki/sources/images").mkdir(parents=True, exist_ok=True)
     Path("wiki/summaries").mkdir(parents=True, exist_ok=True)
     Path("wiki/concepts").mkdir(parents=True, exist_ok=True)
+    Path("wiki/entities").mkdir(parents=True, exist_ok=True)
 
     # Write wiki files
     Path("wiki/AGENTS.md").write_text(AGENTS_MD, encoding="utf-8")
     Path("wiki/index.md").write_text(
-        "# Knowledge Base Index\n\n## Documents\n\n## Concepts\n\n## Explorations\n",
+        "# Knowledge Base Index\n\n## Documents\n\n## Concepts\n\n## Entities\n\n## Explorations\n",
         encoding="utf-8",
     )
     Path("wiki/log.md").write_text("# Operations Log\n\n", encoding="utf-8")
@@ -1307,7 +1308,7 @@ def list_cmd(ctx):
 def print_status(kb_dir: Path) -> None:
     """Print knowledge base status. Usable from CLI and chat REPL."""
     wiki_dir = kb_dir / "wiki"
-    subdirs = ["sources", "summaries", "concepts", "reports"]
+    subdirs = ["sources", "summaries", "concepts", "entities", "reports"]
 
     # Print the active KB path as the first line. Agents and scripts
     # parse this to locate the wiki without assuming cwd == KB root.

tests/test_cli.py

@@ -24,6 +24,7 @@ def test_init_creates_structure(tmp_path):
         assert (cwd / "wiki" / "sources" / "images").is_dir()
         assert (cwd / "wiki" / "summaries").is_dir()
         assert (cwd / "wiki" / "concepts").is_dir()
+        assert (cwd / "wiki" / "entities").is_dir()
         assert (cwd / ".openkb").is_dir()
 
         # Files
@@ -39,7 +40,7 @@ def test_init_creates_structure(tmp_path):
 
         # index.md header
         index_content = (cwd / "wiki" / "index.md").read_text()
-        assert index_content == "# Knowledge Base Index\n\n## Documents\n\n## Concepts\n\n## Explorations\n"
+        assert index_content == "# Knowledge Base Index\n\n## Documents\n\n## Concepts\n\n## Entities\n\n## Explorations\n"
 
 
 def test_init_schema_content(tmp_path):

tests/test_list_status.py

@@ -17,6 +17,7 @@ def _setup_kb(tmp_path: Path) -> Path:
     (kb_dir / "wiki" / "sources" / "images").mkdir(parents=True)
     (kb_dir / "wiki" / "summaries").mkdir(parents=True)
     (kb_dir / "wiki" / "concepts").mkdir(parents=True)
+    (kb_dir / "wiki" / "entities").mkdir(parents=True)
     (kb_dir / "wiki" / "reports").mkdir(parents=True)
     openkb_dir = kb_dir / ".openkb"
     openkb_dir.mkdir()
@@ -111,6 +112,7 @@ def test_status_shows_directory_counts(self, tmp_path):
         assert "sources" in result.output
         assert "summaries" in result.output
         assert "concepts" in result.output
+        assert "entities" in result.output
         assert "reports" in result.output
 
     def test_status_shows_total_indexed(self, tmp_path):