fix(ruby): scope-resolution namespaced class/module definitions — F62 (#1933) (#1972)

* fix(ruby): namespaced class/module definition captures — F62 (#1933)

* chore(bench): regenerate Ruby golden captures after F62 scope_resolution patterns

* fix(ruby): namespaced class/module definition captures — F62 (#1933)

* chore: remove unused imports from ruby-namespaced test

* chore: add comment about capture-only scope in ruby-namespaced test

---------

Co-authored-by: Gergő Magyar <gergomagyar@icloud.com>

gitnexus/bench/scope-capture/baselines.json

@@ -37,9 +37,10 @@
     "_rebaselined": "#1956: heritage-bearing scale source (class extends Base + use trait); both forms gated at scale; linear (~1.04)."
   },
   "ruby": {
-    "fingerprint": "bdc7dbfbe5ce7b1e98292f88b404071b4a4b5566f6e756cd637e36a2214967e1",
+    "fingerprint": "c3e9eec6ed152eae1f7d9759c08041d7d6230a4c532ec07d33f3c9f1ff7b9588",
     "scaling_budget": 1.5,
-    "_rebaselined": "#1956 synth-widening: + ruby-qualified-base fixture; synth now reduces a scope_resolution superclass (class C < Mod::Super) to its trailing constant (matching the #1940 legacy leg), at parity. Linear (~1.03). (Earlier #1956: heritage-bearing scale source.)"
+    "_rebaselined": "#1956 synth-widening: + ruby-qualified-base fixture; synth now reduces a scope_resolution superclass (class C < Mod::Super) to its trailing constant (matching the #1940 legacy leg), at parity. Linear (~1.03). (Earlier #1956: heritage-bearing scale source.)",
+    "_note": "F62: + scope_resolution class/module declaration captures — fixture count 78→81, fingerprint drift expected."
   },
   "swift": {
     "fingerprint": "53325c6345161c5a495f997297af5a24fb718fd3e6647040160f8ab2a2c8e4c0",

gitnexus/src/core/ingestion/languages/ruby/query.ts

@@ -54,11 +54,21 @@ const RUBY_SCOPE_QUERY = `
 (class
   name: (constant) @declaration.name) @declaration.class
 
+;; class Foo::Bar — namespaced class definition
+(class
+  name: (scope_resolution
+    name: (constant) @declaration.name)) @declaration.class
+
 ;; ── Declarations — module (labeled Trait for class-like registry lookup) ─
 
 (module
   name: (constant) @declaration.name) @declaration.trait
 
+;; module Baz::Qux — namespaced module definition
+(module
+  name: (scope_resolution
+    name: (constant) @declaration.name)) @declaration.trait
+
 ;; ── Declarations — method (instance) ─────────────────────────────────────
 
 (method

gitnexus/test/fixtures/lang-resolution/ruby-namespaced/namespaced.rb

@@ -0,0 +1,11 @@
+class Foo::Bar
+  def bar_method; end
+end
+
+module Baz::Qux
+  def qux_method; end
+end
+
+class Outer::Middle::Inner
+  def inner_method; end
+end

gitnexus/test/fixtures/ruby-captures-golden/expected-captures.json

@@ -203,6 +203,10 @@
     "captureGroups": 12,
     "digest": "c10f36dbbbe2be16fc3fccbebb7ee79668ec7a77b75adbd5281ded31893d49de"
   },
+  "ruby-namespaced/namespaced.rb": {
+    "captureGroups": 16,
+    "digest": "34e07387fece6c1d2deb49c39fc2bfe0badfe8015dd1f7ae956d57ac98322a1d"
+  },
   "ruby-overload-dispatch/lib/app.rb": {
     "captureGroups": 10,
     "digest": "288d5386cf37fb76b52a94bc7da6bf8e7843830ebbb01fcd8100d1590c0e3f72"

gitnexus/test/integration/resolvers/ruby-namespaced.test.ts

@@ -0,0 +1,82 @@
+/**
+ * Regression tests for Ruby namespaced class/module definitions (issue #1933 F62).
+ *
+ * The existing query captures (class) and (module) with name: (constant) only —
+ * missing namespaced forms like class Foo::Bar and module Baz::Qux where the
+ * name field is a scope_resolution node.
+ */
+// NOTE: Tests are capture-level only. Graph-node modeling for namespaced
+// class/module definitions is a tracked follow-up — the scope-extractor
+// doesn't yet handle scope_resolution names end-to-end.
+import { describe, it, expect } from 'vitest';
+import { emitRubyScopeCaptures } from '../../../src/core/ingestion/languages/ruby/index.js';
+import type { CaptureMatch } from 'gitnexus-shared';
+
+describe('Ruby namespaced class/module definitions (F62) — capture-level', () => {
+  it('class Foo::Bar captures @declaration.class with tail constant (Bar)', () => {
+    const src = `class Foo::Bar
+  def bar_method; end
+end
+`;
+    const matches = emitRubyScopeCaptures(src, 'test.rb') as CaptureMatch[];
+    const classDecls = matches.filter((m) => m['@declaration.class']);
+    expect(classDecls.length).toBe(1);
+    expect(classDecls[0]['@declaration.name'].text).toBe('Bar');
+  });
+
+  it('module Baz::Qux captures @declaration.trait with tail constant (Qux)', () => {
+    const src = `module Baz::Qux
+  def qux_method; end
+end
+`;
+    const matches = emitRubyScopeCaptures(src, 'test.rb') as CaptureMatch[];
+    const moduleDecls = matches.filter((m) => m['@declaration.trait']);
+    expect(moduleDecls.length).toBe(1);
+    expect(moduleDecls[0]['@declaration.name'].text).toBe('Qux');
+  });
+
+  it('nested chain Outer::Middle::Inner resolves to tail constant (Inner)', () => {
+    const src = `class Outer::Middle::Inner
+  def inner_method; end
+end
+`;
+    const matches = emitRubyScopeCaptures(src, 'test.rb') as CaptureMatch[];
+    const classDecls = matches.filter((m) => m['@declaration.class']);
+    expect(classDecls.length).toBe(1);
+    expect(classDecls[0]['@declaration.name'].text).toBe('Inner');
+  });
+
+  it('bare class Foo still works alongside namespaced class', () => {
+    const src = `
+class Foo
+  def foo_method; end
+end
+
+class Foo::Bar
+  def bar_method; end
+end
+`;
+    const matches = emitRubyScopeCaptures(src, 'test.rb') as CaptureMatch[];
+    const classDecls = matches.filter((m) => m['@declaration.class']);
+    expect(classDecls.length).toBe(2);
+    const names = classDecls.map((m) => m['@declaration.name'].text).sort();
+    expect(names).toEqual(['Bar', 'Foo']);
+  });
+
+  it('bare module Baz still works alongside namespaced module', () => {
+    const src = `
+module Baz
+  def baz_method; end
+end
+
+module Baz::Qux
+  def qux_method; end
+end
+`;
+    const matches = emitRubyScopeCaptures(src, 'test.rb') as CaptureMatch[];
+    const moduleDecls = matches.filter((m) => m['@declaration.trait']);
+    expect(moduleDecls.length).toBe(2);
+    const names = moduleDecls.map((m) => m['@declaration.name'].text).sort();
+    expect(names).toEqual(['Baz', 'Qux']);
+  });
+});