feat: persist selected agent

Resolves #37

Author: theboxer

_build/js/src/chatHistory.ts

@@ -224,7 +224,9 @@ export const chatHistory = {
       };
     }
 
-    _namespace[key].onAddMessage = onAddMessage;
+    if (onAddMessage) {
+      _namespace[key].onAddMessage = onAddMessage;
+    }
 
     return {
       addUserMessage: (content, hidden = false) => {

_build/js/src/globalState.ts

@@ -1,8 +1,9 @@
-import type { Config } from './index';
+import type { AvailableAgent, Config } from './index';
 import type { Modal } from './ui/localChat/types';
 
 export const globalState = {
   modalOpen: false,
   config: {} as Config,
   modal: {} as Modal,
+  selectedAgent: {} as Record<string, AvailableAgent | undefined>,
 };

_build/js/src/ui/localChat/modalInput.ts

@@ -176,9 +176,10 @@ export const buildModalInput = (config: LocalChatConfig) => {
 
   const agentSelectComponent = buildSelect(
     globalState.config.availableAgents,
-    globalState.modal.selectedAgent?.id,
+    globalState.selectedAgent[config.key]?.id,
     (selectedAgent) => {
       globalState.modal.selectedAgent = selectedAgent ?? undefined;
+      globalState.selectedAgent[config.key] = selectedAgent ?? undefined;
     },
     {
       idProperty: 'id',