The Swift `enum_entry` handler in `_swift_extra_walk` iterated the entry's
children only for the `simple_identifier` case name (emitting a `case_of`
edge) and never descended into the sibling `enum_type_parameters` node, where
associated-value types live (`enum_type_parameters -> user_type ->
type_identifier`). As a result `case started(Session)` silently dropped the
`Event -> Session` type reference.
Descend into each `enum_type_parameters` child after emitting `case_of`, run
`_swift_collect_type_refs` over its named children, and emit a `references`
edge from the enum node to each collected type (context `type`, or
`generic_arg` for generic roles), guarding target != enum node. Mirrors the
existing Swift property/parameter/return-type emit style.
Fixture: add `case failed(Config)` to `NetworkError` in sample.swift.
Test: assert (`NetworkError`, `Config`) in references(context=type).
* feat: add Swift language support
Add tree-sitter-swift extractor for classes, structs, protocols,
functions, imports, and call graph edges. Includes 8 passing tests.
* feat: full Swift AST support — enums, extensions, actors, conformance
- Enums: extract enum types, methods, and cases (case_of edges)
- Extensions: methods attach to the original type (no duplicate nodes)
- Actors: recognized via unified class_declaration node type
- Conformance/inheritance: inherits edges from : Protocol syntax
- deinit/subscript: name resolution for nameless declarations
- 12 new tests (110 total, all passing)
Synvoya