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Overlay sources now have two distinct collections: `columns:` for computed columns (requiring `expr` + `type`) and `column_overrides:` for metadata patches to inherited manifest columns. Composing or loading an overlay that mixes the two — or references an unknown column — fails with a typed error. Introduce `ResolvedSemanticLayerSource` / `resolvedSourceSchema` / `toResolvedWire` as the strict shape sent to the Python engine, and add a schema contract test that diffs Zod against the Pydantic JSON schema dumped by `python -m semantic_layer dump-schema`. `SourceDefinition` is now `extra="forbid"` on the Python side. `loadAllSources` surfaces per-file load errors instead of swallowing them, so validation/query paths can report manifest shard parse failures. |
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|---|---|---|
| .. | ||
| __init__.py | ||
| __main__.py | ||
| cli.py | ||
| duplicate_check.py | ||
| engine.py | ||
| generator.py | ||
| graph.py | ||
| loader.py | ||
| manifest.py | ||
| models.py | ||
| parser.py | ||
| planner.py | ||
| sql_table_extractor.py | ||
| table_identifier_parser.py | ||