Initial public ModelForge release

docs/architecture/adr/0025-frozen-retrieval-candidate-pools.md

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+# ADR-0025: Freeze first-stage candidate pools for reranking comparisons
+
+## Status
+
+Accepted — 2026-08-25.
+
+## Decision
+
+Control and reranked results must consume the same immutable ordered candidate pool, identified by
+suite case, embedding source, corpus and retrieval configuration. Persist IDs, scores and content
+hashes, never text. Top 40 is a ceiling, not permission to pad an in-scope pool.
+
+## Consequences
+
+Reranker gains cannot be caused by retrieval drift. A reranker cannot claim recovery of an item not
+present in the pool, and mismatched pools are non-comparable.