fix: unify theme system - fix theme switching persistence

- Unified localStorage key to 'theme-preference' across all components
- Fixed header.tsx using wrong localStorage key ('theme' instead of 'theme-preference')
- Added localStorage hybrid persistence for instant theme changes
- Removed router.refresh() which was causing stale data revert
- Replaced Blue theme with Sepia
- Consolidated auth() calls to prevent race conditions
- Updated UserSettingsData types to include all themes

keep-notes/app/actions/notes.ts

@@ -6,7 +6,8 @@ import { Note, CheckItem } from '@/lib/types'
 import { auth } from '@/auth'
 import { getAIProvider } from '@/lib/ai/factory'
 import { cosineSimilarity, validateEmbedding, calculateRRFK, detectQueryType, getSearchWeights } from '@/lib/utils'
-import { getSystemConfig, getConfigNumber, SEARCH_DEFAULTS } from '@/lib/config'
+import { getSystemConfig, getConfigNumber, getConfigBoolean, SEARCH_DEFAULTS } from '@/lib/config'
+import { contextualAutoTagService } from '@/lib/ai/services/contextual-auto-tag.service'
 
 // Helper function to parse JSON strings from database
 function parseNote(dbNote: any): Note {
@@ -337,6 +338,41 @@ export async function createNote(data: {
       console.error('Embedding generation failed:', e);
     }
 
+    // AUTO-LABELING: If no labels provided and auto-labeling is enabled, suggest labels
+    let labelsToUse = data.labels || null;
+    if ((!labelsToUse || labelsToUse.length === 0) && data.notebookId) {
+      try {
+        const autoLabelingEnabled = await getConfigBoolean('AUTO_LABELING_ENABLED', true);
+        const autoLabelingConfidence = await getConfigNumber('AUTO_LABELING_CONFIDENCE_THRESHOLD', 70);
+
+        if (autoLabelingEnabled) {
+          console.log('[AUTO-LABELING] Generating suggestions for new note in notebook:', data.notebookId);
+          const suggestions = await contextualAutoTagService.suggestLabels(
+            data.content,
+            data.notebookId,
+            session.user.id
+          );
+
+          // Apply suggestions with confidence >= threshold
+          const appliedLabels = suggestions
+            .filter(s => s.confidence >= autoLabelingConfidence)
+            .map(s => s.label);
+
+          if (appliedLabels.length > 0) {
+            labelsToUse = appliedLabels;
+            console.log(`[AUTO-LABELING] Applied ${appliedLabels.length} labels:`, appliedLabels);
+          } else {
+            console.log('[AUTO-LABELING] No suggestions met confidence threshold');
+          }
+        } else {
+          console.log('[AUTO-LABELING] Disabled in config');
+        }
+      } catch (error) {
+        console.error('[AUTO-LABELING] Failed to suggest labels:', error);
+        // Continue without auto-labeling on error
+      }
+    }
+
     const note = await prisma.note.create({
       data: {
         userId: session.user.id,
@@ -345,7 +381,7 @@ export async function createNote(data: {
         color: data.color || 'default',
         type: data.type || 'text',
         checkItems: data.checkItems ? JSON.stringify(data.checkItems) : null,
-        labels: data.labels ? JSON.stringify(data.labels) : null,
+        labels: labelsToUse ? JSON.stringify(labelsToUse) : null,
         images: data.images ? JSON.stringify(data.images) : null,
         links: data.links ? JSON.stringify(data.links) : null,
         isArchived: data.isArchived || false,
@@ -360,8 +396,8 @@ export async function createNote(data: {
     })
 
     // Sync labels to ensure Label records exist
-    if (data.labels && data.labels.length > 0) {
-      await syncLabels(session.user.id, data.labels)
+    if (labelsToUse && labelsToUse.length > 0) {
+      await syncLabels(session.user.id, labelsToUse)
     }
 
     // Revalidate main page (handles both inbox and notebook views via query params)