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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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6
packages/cli/src/sl.ts
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@ -213,7 +213,11 @@ export async function runKtxSl(args: KtxSlArgs, io: KtxSlIo = process, deps: Ktx
if (!source) {
throw new Error(`Semantic-layer source "${args.connectionId}/${args.sourceName}" was not found`);
}
const result = await validateLocalSlSource(source.yaml, { project, connectionId: args.connectionId });
const result = await validateLocalSlSource(source.yaml, {
project,
connectionId: args.connectionId,
sourceName: args.sourceName,
});
if (!result.valid) {
for (const error of result.errors) {
io.stderr.write(`${error}\n`);