Add genlocke lineage tracking with aligned timeline view

Implement read-only lineage view that traces Pokemon across genlocke legs
via existing transfer records. Backend walks transfer chains to build
lineage entries; frontend renders them as cards with a column-aligned
timeline grid so leg dots line up vertically across all lineages.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

frontend/src/components/index.ts

@@ -4,6 +4,7 @@ export { EncounterModal } from './EncounterModal'
 export { EndRunModal } from './EndRunModal'
 export { GameCard } from './GameCard'
 export { GenlockeGraveyard } from './GenlockeGraveyard'
+export { GenlockeLineage } from './GenlockeLineage'
 export { HofTeamModal } from './HofTeamModal'
 export { GameGrid } from './GameGrid'
 export { Layout } from './Layout'