feat(java,kotlin): MethodExtractor abstraction with per-language configs

gitnexus-shared/src/graph/types.ts

@@ -78,6 +78,9 @@ export type NodeProperties = {
   visibility?: string;
   isStatic?: boolean;
   isReadonly?: boolean;
+  isAbstract?: boolean;
+  isFinal?: boolean;
+  annotations?: string[];
   // Route/response
   responseKeys?: string[];
   errorKeys?: string[];

gitnexus/src/core/ingestion/language-provider.ts

@@ -14,6 +14,7 @@ import type { LanguageTypeConfig } from './type-extractors/types.js';
 import type { CallRouter } from './call-routing.js';
 import type { ExportChecker } from './export-detection.js';
 import type { FieldExtractor } from './field-extractor.js';
+import type { MethodExtractor } from './method-types.js';
 import type { ImportResolverFn } from './import-resolvers/types.js';
 import type { NamedBindingExtractorFn } from './named-bindings/types.js';
 import type { SyntaxNode } from './utils/ast-helpers.js';
@@ -126,6 +127,10 @@ interface LanguageProviderConfig {
    *  declarations. Produces FieldInfo[] with name, type, visibility, static,
    *  readonly metadata. Default: undefined (no field extraction). */
   readonly fieldExtractor?: FieldExtractor;
+  /** Method extractor for extracting method/function definitions from class/struct/interface
+   *  declarations. Produces MethodInfo[] with name, parameters, visibility, isAbstract,
+   *  isFinal, annotations metadata. Default: undefined (no method extraction). */
+  readonly methodExtractor?: MethodExtractor;
   /** Extract a semantic description for a definition node (e.g., PHP Eloquent
    *  property arrays, relation method descriptions).
    *  Default: undefined (no description extraction). */

gitnexus/src/core/ingestion/languages/java.ts

@@ -16,6 +16,8 @@ import { extractJavaNamedBindings } from '../named-bindings/java.js';
 import { JAVA_QUERIES } from '../tree-sitter-queries.js';
 import { createFieldExtractor } from '../field-extractors/generic.js';
 import { javaConfig } from '../field-extractors/configs/jvm.js';
+import { createMethodExtractor } from '../method-extractors/generic.js';
+import { javaMethodConfig } from '../method-extractors/configs/jvm.js';
 
 export const javaProvider = defineLanguage({
   id: SupportedLanguages.Java,
@@ -28,4 +30,5 @@ export const javaProvider = defineLanguage({
   interfaceNamePattern: /^I[A-Z]/,
   mroStrategy: 'implements-split',
   fieldExtractor: createFieldExtractor(javaConfig),
+  methodExtractor: createMethodExtractor(javaMethodConfig),
 });

gitnexus/src/core/ingestion/languages/kotlin.ts

@@ -18,6 +18,8 @@ import { KOTLIN_QUERIES } from '../tree-sitter-queries.js';
 import { isKotlinClassMethod } from '../utils/ast-helpers.js';
 import { createFieldExtractor } from '../field-extractors/generic.js';
 import { kotlinConfig } from '../field-extractors/configs/jvm.js';
+import { createMethodExtractor } from '../method-extractors/generic.js';
+import { kotlinMethodConfig } from '../method-extractors/configs/jvm.js';
 
 const BUILT_INS: ReadonlySet<string> = new Set([
   'println',
@@ -89,6 +91,7 @@ export const kotlinProvider = defineLanguage({
   importPathPreprocessor: appendKotlinWildcard,
   mroStrategy: 'implements-split',
   fieldExtractor: createFieldExtractor(kotlinConfig),
+  methodExtractor: createMethodExtractor(kotlinMethodConfig),
   builtInNames: BUILT_INS,
   labelOverride: (functionNode, defaultLabel) => {
     if (defaultLabel !== 'Function') return defaultLabel;