Refactor error handling, client, and tests for Ollama integration

src/chat-view.ts

@@ -36,6 +36,19 @@ export class ChatView extends ItemView {
   private newChatButtonClickHandler: (() => void) | null = null;
   private listenersAttached = false;
 
+  // Getters for testing
+  public getSendButtonClickHandler(): (() => Promise<void>) | null {
+    return this.sendButtonClickHandler;
+  }
+
+  public getInputKeyDownHandler(): ((e: KeyboardEvent) => Promise<void>) | null {
+    return this.inputKeyDownHandler;
+  }
+
+  public getNewChatButtonClickHandler(): (() => void) | null {
+    return this.newChatButtonClickHandler;
+  }
+
   constructor(leaf: WorkspaceLeaf, settings: PluginSettings) {
     super(leaf);
     this.settings = settings;