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/app/(auth)/forgot-password/page.tsx

@@ -7,8 +7,10 @@ import { Card, CardContent, CardDescription, CardFooter, CardHeader, CardTitle }
 import { forgotPassword } from '@/app/actions/auth-reset'
 import { toast } from 'sonner'
 import Link from 'next/link'
+import { useLanguage } from '@/lib/i18n'
 
 export default function ForgotPasswordPage() {
+  const { t } = useLanguage()
   const [isSubmitting, setIsSubmitting] = useState(false)
   const [isDone, setIsSubmittingDone] = useState(false)
 
@@ -18,7 +20,7 @@ export default function ForgotPasswordPage() {
     const formData = new FormData(e.currentTarget)
     const result = await forgotPassword(formData.get('email') as string)
     setIsSubmitting(false)
-    
+
     if (result.error) {
       toast.error(result.error)
     } else {
@@ -31,14 +33,14 @@ export default function ForgotPasswordPage() {
       <main className="flex items-center justify-center md:h-screen p-4">
         <Card className="w-full max-w-[400px]">
           <CardHeader>
-            <CardTitle>Check your email</CardTitle>
+            <CardTitle>{t('auth.checkYourEmail')}</CardTitle>
             <CardDescription>
-              We have sent a password reset link to your email address if it exists in our system.
+              {t('auth.resetEmailSent')}
             </CardDescription>
           </CardHeader>
           <CardFooter>
             <Link href="/login" className="w-full">
-              <Button variant="outline" className="w-full">Return to Login</Button>
+              <Button variant="outline" className="w-full">{t('auth.returnToLogin')}</Button>
             </Link>
           </CardFooter>
         </Card>
@@ -50,24 +52,24 @@ export default function ForgotPasswordPage() {
     <main className="flex items-center justify-center md:h-screen p-4">
       <Card className="w-full max-w-[400px]">
         <CardHeader>
-          <CardTitle>Forgot Password</CardTitle>
+          <CardTitle>{t('auth.forgotPasswordTitle')}</CardTitle>
           <CardDescription>
-            Enter your email address and we'll send you a link to reset your password.
+            {t('auth.forgotPasswordDescription')}
           </CardDescription>
         </CardHeader>
         <form onSubmit={handleSubmit}>
           <CardContent className="space-y-4">
             <div className="space-y-2">
-              <label htmlFor="email" className="text-sm font-medium">Email</label>
+              <label htmlFor="email" className="text-sm font-medium">{t('auth.email')}</label>
               <Input id="email" name="email" type="email" required placeholder="name@example.com" />
             </div>
           </CardContent>
           <CardFooter className="flex flex-col gap-4">
             <Button type="submit" className="w-full" disabled={isSubmitting}>
-              {isSubmitting ? 'Sending...' : 'Send Reset Link'}
+              {isSubmitting ? t('auth.sending') : t('auth.sendResetLink')}
             </Button>
             <Link href="/login" className="text-sm text-center underline">
-              Back to login
+              {t('auth.backToLogin')}
             </Link>
           </CardFooter>
         </form>