fix: boucle infinie Maximum update depth dans useAutoTagging + toolbar

- use-auto-tagging: onQuotaExceeded via ref stable → n'invalide plus
  useCallback analyzeContent à chaque render parent
- note-editor-context: filteredSuggestions et existingLabelsLower
  stabilisés avec useMemo (était recalculé sans memo → nouvelle ref
  à chaque render → état useMemo state se réexécutait → boucle)
- deepseek.ts: generateTags via generateText (pas generateObject)
  pour éviter response_format:json_schema non supporté

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

memento-note/hooks/use-auto-tagging.ts

@@ -25,6 +25,9 @@ export function useAutoTagging({ content, notebookId, enabled = true, onQuotaExc
   const previousNotebookId = useRef<string | null | undefined>(notebookId);
   // AbortController for cancelling in-flight requests
   const abortRef = useRef<AbortController | null>(null);
+  // Stable ref for onQuotaExceeded — avoids re-creating analyzeContent on every render
+  const onQuotaExceededRef = useRef(onQuotaExceeded);
+  onQuotaExceededRef.current = onQuotaExceeded;
 
   const analyzeContent = useCallback(async (contentToAnalyze: string, currentNotebookId?: string | null, currentLanguage?: string) => {
     if (!contentToAnalyze || contentToAnalyze.length < 10) {
@@ -63,8 +66,8 @@ export function useAutoTagging({ content, notebookId, enabled = true, onQuotaExc
       if (controller.signal.aborted) return;
 
       if (!response.ok) {
-        if (response.status === 402 && onQuotaExceeded) {
-          onQuotaExceeded();
+        if (response.status === 402) {
+          onQuotaExceededRef.current?.();
         }
         throw new Error('Error during analysis');
       }
@@ -79,7 +82,7 @@ export function useAutoTagging({ content, notebookId, enabled = true, onQuotaExc
         setIsAnalyzing(false);
       }
     }
-  }, [hasAiConsent, requestAiConsent, onQuotaExceeded]);
+  }, [hasAiConsent, requestAiConsent]); // onQuotaExceeded via ref — stable
 
   // Trigger on content change
   useEffect(() => {