diff --git a/src/utils/ai.js b/src/utils/ai.js
index 66acd6ad..13d404c2 100644
--- a/src/utils/ai.js
+++ b/src/utils/ai.js
@@ -149,6 +149,8 @@ var MULTIMODAL_PROVIDERS = ['litellm', 'openrouter', 'azure'];
 
 function applyImageAttachments(messages, images) {
   if (!Array.isArray(images) || !images.length) return messages;
+  // One-line observability: confirms image parts reach the provider request.
+  console.log('[clinical-ai] attaching ' + images.length + ' image part(s) to the provider request');
   if (MULTIMODAL_PROVIDERS.indexOf(activeProvider) === -1) {
     var unsupported = new Error('Image attachments require an OpenAI-compatible provider (LiteLLM, OpenRouter, or Azure). The active provider cannot accept image input, so no request was sent.');
     unsupported.statusCode = 400;