feat: add LangChain agent types to CompletionAdapter interface

Co-authored-by: Copilot <copilot@github.com>

Author: ivictbor

adminforth/types/adapters/CompletionAdapter.ts

@@ -34,6 +34,15 @@ export type CompletionRequest = {
   ) => void | Promise<void>;
 };
 
+export type CompletionAdapterLangChainAgentPurpose =
+  | "primary"
+  | "summary";
+
+export type CompletionAdapterLangChainAgentSpec = {
+  model: unknown;
+  middleware?: unknown[];
+};
+
 export interface CompletionAdapter {
 
   /**
@@ -60,3 +69,11 @@ export interface CompletionAdapter {
    */
   measureTokensCount(content: string): Promise<number> | number;
 }
+
+export interface LangChainAgentCompletionAdapter extends CompletionAdapter {
+  getLangChainAgentSpec(params: {
+    maxTokens: number;
+    purpose: CompletionAdapterLangChainAgentPurpose;
+  }): Promise<CompletionAdapterLangChainAgentSpec>
+    | CompletionAdapterLangChainAgentSpec;
+}

adminforth/types/adapters/index.ts

@@ -1,7 +1,10 @@
 export type { EmailAdapter } from './EmailAdapter.js';
 export type {
 	CompletionAdapter,
+	CompletionAdapterLangChainAgentPurpose,
+	CompletionAdapterLangChainAgentSpec,
 	CompletionReasoningEffort,
+	LangChainAgentCompletionAdapter,
 	CompletionRequest,
 	CompletionStreamEvent,
 	CompletionTool,