h-explorelisted

# h-explore — Keep alternatives live Retrieve current FPF source with `mode="inspect"` for a known SourceID/UnitID, or `mode="concern"` for the exploration question. Inspect the direct pattern body; retrieval does not choose or rank a candidate. Treat a concern result's `candidate_set` as incomplete navigation. Before relying on one candidate, inspect its exact identifier and direct pattern body. Keep several candidates live or abstain when the basis is insufficient. Never query after exploration merely to manufacture support for candidates already chosen. Generate candidates that differ in kind, not only degree. For each state its novelty marker, strengths, risks, weakest link, and any defensible stepping- stone role. Keep unresolved branches and return conditions visible. Return candidates conversationally by default. Call `haft_solution(action="explore")` only on explicit save intent or when current Work supplies a concrete operator-named or agent-inferred receiving use. A typed durable portfolio needs one independently addressable ProjectRecord per option: persist candidate-description Notes under the same exact concern, keep each returned `Haft.ProjectRecordRef`, and pass it as the variant's `project_record_ref`. Do not derive or invent record IDs. Without exact option refs, preserve the legacy portfolio but report typed projection as underdetermined. Do not invent a ProblemCard to satisfy a sequence and do not prescribe comparison next.