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Evidence authoring response contract
You receive exactly one normalized Source Evidence request. Return one JSON object with
only a candidates array, without Markdown fences or explanatory text.
Use only facts present in normalized_text. Never merge, cite, or infer facts from
another source. Reuse an existing_id only when it was supplied in previous_units;
otherwise omit it. Preserve prior reviewed wording when it is still supported. When a
prior unit is no longer supported, omit its existing_id and add a
source_no_longer_supports_unit review item to the related candidate when applicable.
Every candidate must match schema version 1, use one of the eight declared Evidence
kinds, include one to five short exact excerpts copied from normalized_text, and add
review items for ambiguities. Do not assign a new canonical ID; the host does that
deterministically. Do not use tools or alter any repository state.