feat: add a SurrealDB Laravel schema and migration driver foundation #113
Description
Context
As a developer building on Katra's Surreal foundation, I need Laravel to understand SurrealDB as a database/schema target so migrations can describe graph tables and fields through a Laravel-native workflow instead of only through the custom document store.
Acceptance Criteria
- A Laravel-compatible Surreal connection foundation exists for schema and migration work.
- Laravel migrations can create and drop at least one Surreal-backed table/collection through the new driver.
- The implementation is covered by automated tests.
- Configuration and service registration are documented in the repo.
Notes
This issue should build on the already-merged Surreal model foundation from #25 rather than replacing it.
The goal here is not full SQL parity. A narrow migration/schema slice is acceptable if it gives Katra a real Laravel migration path for Surreal-backed application data.
Out of Scope
- Cache, queue, and session driver work
- Full Eloquent parity for every query feature
- GraphRAG- or streaming-specific APIs