These fields were unused in practice. Removed from frontend types,
issue detail UI, backend handlers, daemon prompt/context, protocol
messages, SQL queries, and tests. DB columns retained with defaults.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
The repository JSONB column on the issue table is unused. This removes
it end-to-end: migration to drop the column, sqlc queries, Go handler/
service/daemon/protocol structs, TypeScript types, and the
RepositoryEditor UI component.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>