FA-99625 / RAG context assembly / Member archive
Repeated chunk identifiers consume the evidence budget twice · case 05
Repeated chunk identifiers consume the evidence budget twice.
Case contract
Rows are [chunk_id,text]. Preserve first occurrence by ID and return its text.
Why this case matters
A small deterministic evidence assembly model makes context budgeting behavior inspectable.
One recorded failure
Sample boundary fixtureThis sample comes from the broken implementation of a controlled reproducer.
| Boundary fixture | Actual | Expected | Outcome |
|---|---|---|---|
| same id distinct text | ["first", "updated"] | ["first"] | Failed |
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