ide: advertise typed-language keywords

tests/test_validate_ide_metadata.py

@@ -0,0 +1,34 @@
+import json
+import subprocess
+from pathlib import Path
+
+ROOT = Path(__file__).resolve().parents[1]
+
+
+def test_ide_metadata_lists_current_typed_function_keywords():
+    result = subprocess.run(
+        ["python3", "tools/validate_ide_metadata.py"],
+        cwd=ROOT,
+        text=True,
+        stdout=subprocess.PIPE,
+        stderr=subprocess.STDOUT,
+    )
+
+    assert result.returncode == 0, result.stdout
+    assert result.stdout.strip() == "IDE metadata validation OK"
+
+
+def test_ide_metadata_is_valid_json_with_keyword_list():
+    result = subprocess.run(
+        ["./claro", "ide"],
+        cwd=ROOT,
+        text=True,
+        stdout=subprocess.PIPE,
+        stderr=subprocess.STDOUT,
+        check=True,
+    )
+    metadata = json.loads(result.stdout)
+
+    assert "RETURNS" in metadata["keywords"]
+    assert "CHECK" in metadata["keywords"]
+    assert "TYPE" in metadata["keywords"]