feat(i18n): localize onboarding & reports; logout

- add en/ms keys for welcome, onboarding, capture/review, errors, and
  settings labels
- replace hardcoded strings with I18n.t in WelcomeScreen, OnboardingFlow,
  CaptureScreen, ReviewScreen, Map severity legend, and Settings
- update StartRouter: onboarded guests go to MainScreen; non-guest users
  see SignIn; skip marks user as onboarded guest
- add logout action in Settings that clears onboarding/user mode prefs
  and returns to the welcome flow
- refine settings diagnostics and app section; move labels to i18n
- leave TODOs for app subtitle, processing status, and ReportCard menu
  labels for future i18n coverage

assets/lang/ms.json

@@ -97,5 +97,60 @@
   "auth.title": "Log masuk",
   "auth.signInWithApple": "Log masuk dengan Apple",
   "auth.signInWithGoogle": "Log masuk dengan Google",
-  "auth.comingSoon": "Akan datang"
+  "auth.comingSoon": "Akan datang",
+  "welcome.title": "Nampak. Tangkap. Baiki.",
+  "welcome.subtitle": "Lapor isu bandar dalam beberapa saat dengan pengesanan berkuasa AI. Bantu mencipta komuniti yang lebih selamat dan lebih baik.",
+  "cta.continueGuest": "Teruskan sebagai Tetamu",
+  "cta.signIn": "Log Masuk",
+  "cta.skip": "Langkau buat masa ini",
+  "onboarding.header": "Selamat Datang ke FixMate",
+  "onboarding.title1": "Laporan Isu Pantas",
+  "onboarding.subtitle1": "Pengesanan Berkuasa AI",
+  "onboarding.body1": "Hanya ambil gambar mana-mana isu bandar - AI kami secara automatik mengenal pasti dan mengkategorikan masalah dalam beberapa saat.",
+  "onboarding.title2": "Pemetaan Bandar Pintar",
+  "onboarding.subtitle2": "Penglihatan Masa Nyata",
+  "onboarding.body2": "Lihat semua isu yang dilaporkan di peta interaktif dengan pengelompokan dan penapisan pintar.",
+  "onboarding.title3": "Jejak Kemajuan",
+  "onboarding.subtitle3": "Kekal Maklum",
+  "onboarding.body3": "Ikuti status laporan anda dari penyerahan hingga penyelesaian. Bantu memperbaiki komuniti anda.",
+  "onboarding.skip": "Langkau",
+  "onboarding.next": "Seterusnya",
+  "onboarding.getStarted": "Mula",
+  "review.title": "Semak & Hantar",
+  "review.submit": "Hantar",
+  "review.aiAnalysis": "Analisis AI Selesai",
+  "review.aiConfidence": "Pengesanan pintar dengan keyakinan {0}%",
+  "review.useSuggestion": "Guna Cadangan AI",
+  "review.editManually": "Edit Secara Manual",
+  "review.category": "Kategori Isu",
+  "review.severity": "Tahap Keterukan",
+  "review.notes": "Nota Tambahan",
+  "review.notesHint": "Tambah sebarang butiran atau konteks tambahan...",
+  "review.location": "Butiran Lokasi",
+  "review.coordinates": "Koordinat",
+  "review.accuracy": "Ketepatan: {0}m",
+  "error.saving": "Ralat menyimpan laporan: {0}",
+  "error.imagePick": "Ralat memilih imej: {0}",
+  "error.location": "Tidak dapat mendapatkan lokasi. Sila cuba lagi.",
+  "error.imageProcessing": "Ralat memproses imej: {0}",
+  "capture.title": "Lapor Isu",
+  "capture.subtitle": "Lapor Isu Bandar",
+  "capture.description": "Ambil gambar mana-mana isu penyelenggaraan bandar seperti lubang jalan, lampu jalan rosak, atau papan tanda rosak.",
+  "capture.processing": "Memproses imej...",
+  "capture.takePhoto": "Ambil Gambar",
+  "capture.gallery": "Pilih dari Galeri",
+  "report.viewDetails": "Lihat Butiran",
+  "report.updateStatus": "Kemas Kini Status",
+  "report.delete": "Padam",
+  "report.comingSoon": "Akan Datang!",
+  "settings.loading": "Memuatkan...",
+  "settings.app": "Apl",
+  "settings.version": "v1.0.0",
+  "settings.account": "Akaun",
+  "settings.account.guest": "Mod Tetamu",
+  "btn.logout": "Log Keluar",
+  "confirm.logout.title": "Log keluar?",
+  "confirm.logout.message": "Anda akan dibawa kembali ke skrin selamat datang.",
+  "label.createdAt": "Dicipta Pada",
+  "error.clearData": "Gagal mengosongkan data"
 }