feat: Complete internationalization and code cleanup

## Translation Files
- Add 11 new language files (es, de, pt, ru, zh, ja, ko, ar, hi, nl, pl)
- Add 100+ missing translation keys across all 15 languages
- New sections: notebook, pagination, ai.batchOrganization, ai.autoLabels
- Update nav section with workspace, quickAccess, myLibrary keys

## Component Updates
- Update 15+ components to use translation keys instead of hardcoded text
- Components: notebook dialogs, sidebar, header, note-input, ghost-tags, etc.
- Replace 80+ hardcoded English/French strings with t() calls
- Ensure consistent UI across all supported languages

## Code Quality
- Remove 77+ console.log statements from codebase
- Clean up API routes, components, hooks, and services
- Keep only essential error handling (no debugging logs)

## UI/UX Improvements
- Update Keep logo to yellow post-it style (from-yellow-400 to-amber-500)
- Change selection colors to #FEF3C6 (notebooks) and #EFB162 (nav items)
- Make "+" button permanently visible in notebooks section
- Fix grammar and syntax errors in multiple components

## Bug Fixes
- Fix JSON syntax errors in it.json, nl.json, pl.json, zh.json
- Fix syntax errors in notebook-suggestion-toast.tsx
- Fix syntax errors in use-auto-tagging.ts
- Fix syntax errors in paragraph-refactor.service.ts
- Fix duplicate "fusion" section in nl.json

🤖 Generated with [Claude Code](https://claude.com/claude-code)

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

Ou une version plus courte si vous préférez :

feat(i18n): Add 15 languages, remove logs, update UI components

- Create 11 new translation files (es, de, pt, ru, zh, ja, ko, ar, hi, nl, pl)
- Add 100+ translation keys: notebook, pagination, AI features
- Update 15+ components to use translations (80+ strings)
- Remove 77+ console.log statements from codebase
- Fix JSON syntax errors in 4 translation files
- Fix component syntax errors (toast, hooks, services)
- Update logo to yellow post-it style
- Change selection colors (#FEF3C6, #EFB162)

🤖 Generated with [Claude Code](https://claude.com/claude-code)

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

keep-notes/hooks/use-reminder-check.ts

@@ -10,27 +10,27 @@ export function useReminderCheck(notes: Note[]) {
   useEffect(() => {
     const checkReminders = () => {
       const now = new Date();
-      
+      const dueReminders: string[] = [];
+
+      // First pass: collect which reminders are due
       notes.forEach(note => {
         if (!note.reminder) return;
-        
         const reminderDate = new Date(note.reminder);
-        
-        // Check if reminder is due (within last minute or future)
-        // We only notify if it's due now or just passed, not old overdue ones (unless we want to catch up)
-        // Let's say: notify if reminder time is passed AND we haven't notified yet.
-        
+
         if (reminderDate <= now && !notifiedReminders.has(note.id)) {
-          // Play sound (optional)
-          // const audio = new Audio('/notification.mp3');
-          // audio.play().catch(e => console.log('Audio play failed', e));
-
+          dueReminders.push(note.id);
           toast.info("🔔 Reminder: " + (note.title || "Untitled Note"));
-
-          // Mark as notified in local state
-          setNotifiedReminders(prev => new Set(prev).add(note.id));
         }
       });
+
+      // Second pass: update state only once with all due reminders
+      if (dueReminders.length > 0) {
+        setNotifiedReminders(prev => {
+          const newSet = new Set(prev);
+          dueReminders.forEach(id => newSet.add(id));
+          return newSet;
+        });
+      }
     };
 
     // Check immediately
@@ -40,5 +40,5 @@ export function useReminderCheck(notes: Note[]) {
     const interval = setInterval(checkReminders, 30000);
 
     return () => clearInterval(interval);
-  }, [notes, notifiedReminders]);
+  }, [notes]);
 }