fix: use getTagsProvider for all auto-labeling paths, allow suggestions without notebook

- app/api/ai/tags/route.ts: getAIProvider → getTagsProvider (was using
  embedding model instead of tags model for legacy tag generation)
- lib/ai/services/auto-label-creation.service.ts: same fix
- hooks/use-auto-tagging.ts: remove notebookId gate that blocked all
  suggestions in "General Notes" — the API has a legacy path for this
- app/actions/admin-settings.ts: revalidateTag → updateTag (Next.js 16
  requires 2 args for revalidateTag)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

memento-note/app/actions/admin-settings.ts

@@ -3,7 +3,7 @@
 import prisma from '@/lib/prisma'
 import { auth } from '@/auth'
 import { sendEmail } from '@/lib/mail'
-import { revalidateTag } from 'next/cache'
+import { updateTag } from 'next/cache'
 
 async function checkAdmin() {
   const session = await auth()
@@ -63,7 +63,7 @@ export async function updateSystemConfig(data: Record<string, string>) {
     await prisma.$transaction(operations)
 
     // Invalidate cache after update
-    revalidateTag('system-config')
+    updateTag('system-config')
 
     return { success: true }
   } catch (error) {

memento-note/app/api/ai/tags/route.ts

@@ -1,7 +1,7 @@
 import { NextRequest, NextResponse } from 'next/server';
 import { auth } from '@/auth';
 import { contextualAutoTagService } from '@/lib/ai/services/contextual-auto-tag.service';
-import { getAIProvider } from '@/lib/ai/factory';
+import { getTagsProvider } from '@/lib/ai/factory';
 import { getSystemConfig } from '@/lib/config';
 import { z } from 'zod';
 
@@ -44,7 +44,7 @@ export async function POST(req: NextRequest) {
 
     // Otherwise, use legacy auto-tagging (generates new tags)
     const config = await getSystemConfig();
-    const provider = getAIProvider(config);
+    const provider = getTagsProvider(config);
     const tags = await provider.generateTags(content, language);
 
     return NextResponse.json({ tags });

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

@@ -22,13 +22,6 @@ export function useAutoTagging({ content, notebookId, enabled = true }: UseAutoT
   const previousNotebookId = useRef<string | null | undefined>(notebookId);
 
   const analyzeContent = async (contentToAnalyze: string) => {
-    // CRITICAL: Don't suggest labels in "General Notes" (notebookId is null)
-    // Labels should ONLY appear within notebooks, not in the general notes section
-    if (!notebookId) {
-      setSuggestions([]);
-      return;
-    }
-
     if (!contentToAnalyze || contentToAnalyze.length < 10) {
       setSuggestions([]);
       return;

memento-note/lib/ai/services/auto-label-creation.service.ts

@@ -1,5 +1,5 @@
 import { prisma } from '@/lib/prisma'
-import { getAIProvider } from '@/lib/ai/factory'
+import { getTagsProvider } from '@/lib/ai/factory'
 import { getSystemConfig } from '@/lib/config'
 
 export interface SuggestedLabel {
@@ -106,7 +106,7 @@ export class AutoLabelCreationService {
 
     try {
       const config = await getSystemConfig()
-      const provider = getAIProvider(config)
+      const provider = getTagsProvider(config)
       const response = await provider.generateText(prompt)
 
       // Parse AI response