refactor(ops): split 5,300-line ops.py into a package with focused submodules

src/boring_semantic_layer/ops/__init__.py

@@ -0,0 +1,67 @@
+"""Semantic layer operations.
+
+This package was split out of a single ``ops.py``. ``__init__`` re-exports
+the names that callers import from ``boring_semantic_layer.ops`` so existing
+imports keep working unchanged.
+"""
+
+from ._column_extraction import (
+    ColumnExtractionResult,
+    ColumnTracker,
+    JoinColumnExtractionResult,
+    TableColumnRequirements,
+    _extract_columns_from_callable,
+    _extract_join_key_columns,
+    _extract_requirements_from_keys,
+    _extract_requirements_from_measures,
+    _make_tracking_proxy,
+    _parse_prefixed_field,
+)
+from ._core import (
+    # Public value objects
+    Dimension,
+    Measure,
+    # Public Op classes
+    SemanticAggregateOp,
+    SemanticFilterOp,
+    SemanticGroupByOp,
+    SemanticIndexOp,
+    SemanticJoinOp,
+    SemanticLimitOp,
+    SemanticMutateOp,
+    SemanticOrderByOp,
+    SemanticProjectOp,
+    SemanticTableOp,
+    SemanticUnnestOp,
+    # Private helpers used by other modules in this package
+    _CallableWrapper,
+    _classify_measure,
+    _collect_measure_refs,
+    _ensure_xorq_table,
+    _find_all_root_models,
+    _get_field_dict,
+    _get_merged_fields,
+    _is_deferred,
+    _make_schema,
+    _merge_fields_with_prefixing,
+    _normalize_join_predicate,
+    _normalize_to_name,
+    _rebind_to_backend,
+    _rebind_to_canonical_backend,
+)
+
+__all__ = [
+    "Dimension",
+    "Measure",
+    "SemanticAggregateOp",
+    "SemanticFilterOp",
+    "SemanticGroupByOp",
+    "SemanticIndexOp",
+    "SemanticJoinOp",
+    "SemanticLimitOp",
+    "SemanticMutateOp",
+    "SemanticOrderByOp",
+    "SemanticProjectOp",
+    "SemanticTableOp",
+    "SemanticUnnestOp",
+]