Fixes GLOSSARY position-step value (1000→10), adds DEFERRABLE constraint note,
and documents GeschichteView, JourneyItemView, and DocumentSummary read-model types.
ADR-035 records the decision to use Optional<String> for three-way PATCH semantics
instead of jackson-databind-nullable (which targets Jackson 2.x and is incompatible
with Spring Boot 4.0 / Jackson 3.x).
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
