feat(staff): implement staff home screen shell (staff_main)

- Created staff_main package structure
- Implemented StaffMainPage, StaffMainBottomBar, StaffMainCubit
- Added localization for staff_main tabs
- Added typed navigation extension
- Registered package in workspace

apps/mobile/packages/core_localization/lib/src/l10n/en.i18n.json

@@ -365,4 +365,59 @@
     "pending_badge": "PENDING APPROVAL",
     "paid_badge": "PAID"
   }
+  ,
+  "staff": {
+    "home": {
+      "header": {
+        "welcome_back": "Welcome back",
+        "user_name_placeholder": "Krower"
+      },
+      "banners": {
+        "complete_profile_title": "Complete Your Profile",
+        "complete_profile_subtitle": "Get verified to see more shifts",
+        "availability_title": "Availability",
+        "availability_subtitle": "Update your availability for next week"
+      },
+      "quick_actions": {
+        "find_shifts": "Find Shifts",
+        "availability": "Availability",
+        "messages": "Messages",
+        "earnings": "Earnings"
+      },
+      "sections": {
+        "todays_shift": "Today's Shift",
+        "scheduled_count": "$count scheduled",
+        "tomorrow": "Tomorrow",
+        "recommended_for_you": "Recommended for You",
+        "view_all": "View all"
+      },
+      "empty_states": {
+        "no_shifts_today": "No shifts scheduled for today",
+        "find_shifts_cta": "Find shifts →",
+        "no_shifts_tomorrow": "No shifts for tomorrow",
+        "no_recommended_shifts": "No recommended shifts"
+      },
+      "pending_payment": {
+        "title": "Pending Payment",
+        "subtitle": "Payment processing",
+        "amount": "$amount"
+      },
+      "recommended_card": {
+        "act_now": "• ACT NOW",
+        "one_day": "One Day",
+        "today": "Today",
+        "applied_for": "Applied for $title",
+        "time_range": "$start - $end"
+      }
+    }
+  },
+  "staff_main": {
+    "tabs": {
+      "shifts": "Shifts",
+      "payments": "Payments",
+      "home": "Home",
+      "clock_in": "Clock In",
+      "profile": "Profile"
+    }
+  }
 }