feat: Apply localization to Login, Dashboard, and Navigation (Phase 9 - Batch 1)

**Pages Localized:**
- Login page: All UI strings (titles, labels, buttons, links)
- Dashboard page: Welcome message, quick actions, daily summary, predictions
- AppShell: Connection status and presence indicators
- MobileNav: Menu items and app branding
- TabBar: Bottom navigation labels

**Translation Files:**
- Created dashboard.json for all 5 languages (en, es, fr, pt, zh)
- Enhanced common.json with navigation and connection strings
- Updated i18n config to include dashboard namespace

**Languages Supported:**
- English, Spanish, French, Portuguese, Chinese (Simplified)

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

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

maternal-web/lib/i18n/config.ts

@@ -4,6 +4,7 @@ import LanguageDetector from 'i18next-browser-languagedetector';
 
 // Import translation files
 import enCommon from '@/locales/en/common.json';
+import enDashboard from '@/locales/en/dashboard.json';
 import enTracking from '@/locales/en/tracking.json';
 import enAi from '@/locales/en/ai.json';
 import enAuth from '@/locales/en/auth.json';
@@ -12,6 +13,7 @@ import enOnboarding from '@/locales/en/onboarding.json';
 import enErrors from '@/locales/en/errors.json';
 
 import esCommon from '@/locales/es/common.json';
+import esDashboard from '@/locales/es/dashboard.json';
 import esTracking from '@/locales/es/tracking.json';
 import esAi from '@/locales/es/ai.json';
 import esAuth from '@/locales/es/auth.json';
@@ -20,6 +22,7 @@ import esOnboarding from '@/locales/es/onboarding.json';
 import esErrors from '@/locales/es/errors.json';
 
 import frCommon from '@/locales/fr/common.json';
+import frDashboard from '@/locales/fr/dashboard.json';
 import frTracking from '@/locales/fr/tracking.json';
 import frAi from '@/locales/fr/ai.json';
 import frAuth from '@/locales/fr/auth.json';
@@ -28,6 +31,7 @@ import frOnboarding from '@/locales/fr/onboarding.json';
 import frErrors from '@/locales/fr/errors.json';
 
 import ptCommon from '@/locales/pt/common.json';
+import ptDashboard from '@/locales/pt/dashboard.json';
 import ptTracking from '@/locales/pt/tracking.json';
 import ptAi from '@/locales/pt/ai.json';
 import ptAuth from '@/locales/pt/auth.json';
@@ -36,6 +40,7 @@ import ptOnboarding from '@/locales/pt/onboarding.json';
 import ptErrors from '@/locales/pt/errors.json';
 
 import zhCommon from '@/locales/zh/common.json';
+import zhDashboard from '@/locales/zh/dashboard.json';
 import zhTracking from '@/locales/zh/tracking.json';
 import zhAi from '@/locales/zh/ai.json';
 import zhAuth from '@/locales/zh/auth.json';
@@ -46,6 +51,7 @@ import zhErrors from '@/locales/zh/errors.json';
 export const resources = {
   en: {
     common: enCommon,
+    dashboard: enDashboard,
     tracking: enTracking,
     ai: enAi,
     auth: enAuth,
@@ -55,6 +61,7 @@ export const resources = {
   },
   es: {
     common: esCommon,
+    dashboard: esDashboard,
     tracking: esTracking,
     ai: esAi,
     auth: esAuth,
@@ -64,6 +71,7 @@ export const resources = {
   },
   fr: {
     common: frCommon,
+    dashboard: frDashboard,
     tracking: frTracking,
     ai: frAi,
     auth: frAuth,
@@ -73,6 +81,7 @@ export const resources = {
   },
   pt: {
     common: ptCommon,
+    dashboard: ptDashboard,
     tracking: ptTracking,
     ai: ptAi,
     auth: ptAuth,
@@ -82,6 +91,7 @@ export const resources = {
   },
   zh: {
     common: zhCommon,
+    dashboard: zhDashboard,
     tracking: zhTracking,
     ai: zhAi,
     auth: zhAuth,