Add additive schema for demo (user.display_name, innovation.tags, FLEXIBLE free-form fields) and a fully synthetic seed with organizations, personas, problems, submissions, innovations, knowledge items, grant calls, ideas and tester feedback. Verified on SurrealDB 3.2.4: migrations apply cleanly and are idempotent.
Add an idempotent SurrealDB 3.x schema for all domain entities with indexes (HNSW vector and full-text), record access and permissions, plus a taxonomy seed with the 8 social challenges, grouped tags and sample locations. Verified on SurrealDB 3.2.4: migrations apply cleanly, re-run is idempotent and CRUD works.