ingest_triage

1# Ingest Triage - conflict classification and resolution
2 
3This skill is loaded in two contexts:
4- By a Stage 3 WorkUnit agent when `sl_discover`, deterministic projection
5  output, existing project memory, or prior provenance overlaps with what the
6  current WorkUnit is about to write.
7- By the Stage 4 reconciliation agent for cross-WorkUnit sweeps, accepted patch
8  overlap, and eviction decisions.
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10Apply the rules below before every write that could collide with an existing artifact.
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12## Decision tree
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141. **Is this the same artifact I'm producing now, or a different one with the same name?**
15   Read both. If names match and content matches (modulo whitespace): no conflict - skip the write, the prior one stands.
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172. **If content differs, is it an expression-only change (e.g. a different `sql:` body for the same measure name, same grain, same columns)?**
18   Re-ingest change (expression-only): silently replace via `sl_edit_source`. No flag.
19 
203. **If the difference is structural - grain, columns, filter, join shape - is the current bundle the re-ingest of a previously-ingested bundle (i.e. `priorProvenance` has a row for this raw file and artifact)?**
21   Re-ingest change (semantic break): replace + flag. Record in the IngestReport's `conflicts_resolved` list with `flagged_for_human: true`.
22 
234. **If reconciliation sees accepted patches from this same job with no
24prior-sync row, check for same-ingest contradictions:**
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26   | Kind | Detection | Resolution |
27   |---|---|---|
28…