fix: désactiver thinking mode DeepSeek pour fiabiliser le tool calling

Co-authored-by: Cursor <cursoragent@cursor.com>

memento-note/lib/ai/providers/custom-openai.ts

@@ -26,6 +26,19 @@ export class CustomOpenAIProvider implements AIProvider {
         const headers = new Headers(options?.headers);
         headers.set('HTTP-Referer', 'https://localhost:3000');
         headers.set('X-Title', 'Memento AI');
+        // Disable DeepSeek extended thinking for reliable tool/function calling
+        if (options?.body) {
+          try {
+            const body = JSON.parse(options.body as string)
+            if (
+              typeof body.model === 'string' &&
+              (body.model.includes('deepseek') || body.model.includes('thinking') || body.model.includes('reasoner'))
+            ) {
+              body.thinking = { type: 'disabled' }
+            }
+            return fetch(url, { ...options, headers, body: JSON.stringify(body) })
+          } catch { /* ignore parse errors */ }
+        }
         return fetch(url, { ...options, headers });
       }
     });