15cfb821d3
A secret-safe equivalent of blueprint import: the graph editor's overflow menu gains "Duplicate selection", which deep-clones the selected value and colour-strip sources server-side (full config preserved, never crossing the wire) and rewires references that point within the selection — shared dependencies (devices, HA sources, …) stay shared. - graph_schema.remap_refs: write-twin of extract_refs (same dot/list/bindable grammar) that rewrites only in-selection ids; 8 unit tests. - BaseSqliteStore.clone(): faithful deep-copy clone (no schema round-trip, so no field is lost), prefix-preserving fresh id; reusable by any store. - POST /api/v1/graph/duplicate: two-pass clone-then-rewire restricted to value / colour-strip sources (no inline secrets), with a safety net flagging any unremapped reference; 7 integration tests vs real stores. - Frontend: duplicateSubgraph (+cache invalidation), graphDuplicateSelection (reload + reselect the new cluster), overflow-menu item, i18n (en/ru/zh).