[gemma4] first step

skillls/constants.py

@@ -0,0 +1,19 @@
+"""
+Centralized constants for the Skill language parser and LSP server.
+"""
+
+from typing import Final, Set
+
+# Node types that represent syntax errors in Tree-sitter
+ERROR_NODE_TYPES: Final[Set[str]] = {"ERROR", "MISSING"}
+
+# Node types that are considered significant enough to appear in the Document Symbol outline
+SYMBOLIC_NODE_TYPES: Final[Set[str]] = {
+    "function_definition",
+    "procedure_definition",
+    "namespace",
+    "let_binding",
+}
+
+# Node types used to identify names/identifiers within symbolic nodes
+IDENTIFIER_NODE_TYPES: Final[Set[str]] = {"identifier", "name"}