Delete `get_or_create_journal_entity` and replace with explicit `create_journal_entity` alongside the existing reader `load_journal_entity`. Every caller now composes the two at the call site so writes are visible in the caller's own source: load_journal_entity(id) or create_journal_entity(id, ...) This is the L2 foundation of the entity-write-ownership refactor. Rewritten call sites: - think/importers/shared.py (seed_entities) - apps/speakers/bootstrap.py (bootstrap_voiceprints) - apps/speakers/discovery.py (identify_cluster — reuses existing load) - apps/speakers/owner.py (confirm_owner_candidate) - apps/entities/call.py (attach_entity) - think/entities/saving.py (_save_entities_attached)