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sigma_ingest

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Extract durable ktx wiki knowledge from staged Sigma data model specs and workbook summaries. Load for WorkUnits with unitKey sigma-data-models or sigma-workbooks.

packages/cli/src/skills/sigma_ingest/SKILL.md

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Oct 22, 2026
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Apache-2.0

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# Sigma Ingest

Sigma ingest turns staged data model specs and workbook summaries into durable ktx wiki knowledge. The deterministic `project()` step has already written semantic-layer YAML for all warehouse-table data model elements before this skill runs — do not re-write those SL sources.

## Work unit structure

Sigma produces at minimum two work units per ingest run:

- `sigma-data-models` or `sigma-data-models-N`
  - `rawFiles`: `data-models/<id>.json` files (one per data model in this batch)
  - `peerFileIndex`: `workbooks/<id>.json` files + `sigma-manifest.json` + `sigma-projection-config.json`
  - When the workspace has more than 50 data models, split into batches: `sigma-data-models-0`, `sigma-data-models-1`, … with `displayLabel` like `"Sigma: data models (1/8)"`. When ≤50 data models, the unitKey is simply `sigma-data-models` with no suffix.
- `sigma-workbooks` or `sigma-workbooks-N`
  - `rawFiles`: `workbooks/<id>.json` files (one per workbook in this batch)
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