feat: add provider-agnostic LLM extractor adapter

src/ingestion/types.ts

@@ -17,6 +17,16 @@ export interface FactExtractor {
   extract(input: string): Promise<ExtractedFact>;
 }
 
+export interface LlmTextGenerationModel {
+  generateText(prompt: string): Promise<string>;
+}
+
+export interface LlmFactExtractorOptions {
+  model: LlmTextGenerationModel;
+  instructions?: string;
+  promptBuilder?: (input: string, instructions?: string) => string;
+}
+
 export interface IngestStatementOptions {
   extractor: FactExtractor;
   embeddingProvider?: EmbeddingProvider;