docs: repository links now point to ragleap/ragleap-core (the repository moved from antonyrag/ragleap-core)
Home, Roadmap, FAQ: ragleap-agents v0.3.0 (123 tests; json mode still intermittent, taint rule untriggered by a real model); FAQ no longer says agents is not built
Add full wiki: Home, Getting Started, Architecture, Vector Backends, Benchmarks, Migration Guide, Roadmap, FAQ, Contributing