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refactor(sl): split overlay columns from column_overrides and enforce TS/Python wire contract

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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.
This commit is contained in:
Andrey Avtomonov 2026-05-15 00:36:52 +02:00
parent 3e12a9fef4
commit f561bfa850
42 changed files with 847 additions and 193 deletions
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packages/context/package.json
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@ -153,6 +153,7 @@
"@types/node": "^25.7.0",
"@types/pg": "^8.20.0",
"@vitest/coverage-v8": "^4.1.6",
"ajv": "8.20.0",
"typescript": "^6.0.3",
"vitest": "^4.1.6"
},