refactor: unify capability types with data-studio-agent - Remove duplicate capabilities/types.rs and capabilities/registry.rs - Import types and registry from data-studio-agent - Replace SourceKind::SqlKit with SourceKind::AppLocal - Update init_registry() call to pass registration function array - Update agent/executor.rs and agent_adapters.rs to use data-studio-agent paths

refactor: unify capability types with data-studio-agent - Remove duplicate capabilities/types.rs and capabilities/registry.rs - Import types and registry from data-studio-agent - Replace SourceKind::SqlKit with SourceKind::AppLocal - Update init_registry() call to pass registration function array - Update agent/executor.rs and agent_adapters.rs to use data-studio-agent paths #394