fix: centralize app API URL fallbacks

src/utils/tldraw/cc-base/canvas-event-logger/CanvasEventLogger.ts

@@ -5,6 +5,7 @@
 
 import { Editor, TLStoreEventInfo } from '@tldraw/tldraw';
 import { useTranscriptionStore } from '../../stores/transcriptionStore';
+import { API_BASE } from '../../../../config/apiConfig';
 
 export class CanvasEventLogger {
   private editor: Editor | null = null;
@@ -221,7 +222,7 @@ export class CanvasEventLogger {
     this.buffer = [];
 
     try {
-      const response = await fetch('http://192.168.0.64:8000/transcribe/canvas-events', {
+      const response = await fetch(`${API_BASE}/transcribe/canvas-events`, {
         method: 'POST',
         headers: {
           'Content-Type': 'application/json',