tree-sitter-groovy exposes inheritance via the same `superclass` and
`interfaces`/`type_list` fields as tree-sitter-java, but the inheritance-
emitting block in `_extract_generic` was gated on
`ts_module == "tree_sitter_java"`. Groovy was the only class-based JVM
language in the file with no inheritance handler, so every Groovy
`extends`/`implements` was silently dropped (contains/methods/imports/calls
were unaffected).
Widen the gate to include `tree_sitter_groovy`; the existing
`_emit_java_parent_type` path handles the identical node shapes verbatim.
Adds a base class + interface to the Groovy fixture and two regression
tests (extends -> inherits, implements -> implements).
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
- Register .groovy and .gradle in CODE_EXTENSIONS, _DISPATCH, and collect_files
- Add _GROOVY_CONFIG (reuses Java import handler)
- Add regex-based _extract_spock_fallback for Spock spec files where
tree-sitter-groovy wraps the body in ERROR nodes due to def-string methods
- _is_spock_file detects via regex scan (def "...") instead of node-label
heuristic, avoiding false negatives on classes whose name differs from stem
- Fallback retains only file node + import edges from tree-sitter pass to
prevent orphaned constructor/method nodes
- Add tree-sitter-groovy>=0.1.2 dependency
- Add 11 tests covering plain Groovy and Spock paths, including apostrophe
in feature method names
