F.0.2:4.2 - Source-basis branches

Source situation	Authoring move	Boundary
An admitted maintained synthesis already integrates a field	Recover every occurrence that can change the receiving question. Follow its cited sources where a load-bearing distinction or limit depends on them, and compare current alternatives that could change the answer.	The synthesis is a valuable conceptual map, not independent confirmation of its own integrated claims.
Several independent sources answer the question	Give each source an explicit role: proposed contribution, rival explanation, counterexample, boundary, evidence limit, or current alternative.	A reading list or source count does not establish coverage or relevance.
An identified `G.2` pack already exists	Reuse its identified source claims, editions, alignment records, and provenance when they answer the bounded question.	Pack conformance, a fusion record, or a coverage measure does not establish the receiving-framework claim.
An earlier DPF supplies a lesson	Classify the lesson as direct FPF reuse, a bounded FPF improvement proposal, or a domain/local claim retained in the receiving DPF.	Precedent does not create ecosystem law or prescribe package shape.
A derived lookup proposes FPF or DPF contributions	Return each result to the authoritative pattern body and edition. Report a partial result when a source is unavailable, stale, or incompletely indexed, and widen the search when a known contribution is absent.	A lookup result aids discovery; non-return is not evidence that a contribution is absent.