0.19.0

Debug log: each session writes a metadata-only log under agentmon-live/debug//, pruned after seven days; /agentmon debug prints the path.

Learning: one store key per session and per bench row, so sessions in one project no longer overwrite each other; a full store gives up the oldest keys of other projects; old single entries migrate.

Internal: locales split into hooks/lang/.ts; turn clock, release checks and the done gate moved out of register.tsx; review fixes.