docs(mobile): add M3 milestone CHANGELOGs for staff and client apps

apps/mobile/apps/client_app/CHANGELOG.md

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+# Client Mobile App - Change Log
+
+## [0.0.1-M3] - Milestone 3 - 2026-02-15
+
+### Added - Authentication & Onboarding
+- Business email and password authentication
+- Client account registration
+- Business onboarding flow
+- Company information setup
+
+### Added - Home Dashboard
+- Welcome screen with business name
+- Coverage statistics for today:
+  - Coverage percentage
+  - Workers checked in vs needed
+  - Open positions count
+- Late workers alerts with visual indicators
+- Today's estimated labor cost
+- Upcoming shifts section
+- Quick action buttons:
+  - RAPID (urgent same-day coverage)
+  - Create Order
+  - Hubs management
+
+### Added - Hub Management
+- Hubs page accessible from settings
+- Hub creation flow:
+  - Hub name input
+  - Address autocomplete with Google Maps Places API
+  - Hub creation confirmation
+- Hubs list view showing all created hubs
+- Hub card display with name, address, and tag ID
+
+### Added - Order Creation
+- Orders tab in bottom navigation
+- "+ Post" button to create new orders
+- Order type selection screen:
+  - One-Time orders (implemented)
+  - RAPID orders (placeholder)
+  - Recurring orders (planned)
+  - Permanent orders (planned)
+- One-Time Order creation form:
+  - Order name
+  - Date picker
+  - Hub selection
+  - Position management:
+    - Role selection
+    - Worker count
+    - Start/end time
+    - Shift duration calculation
+  - Cost estimation
+- Order creation confirmation
+
+### Added - Order Management
+- Orders list view with:
+  - Order cards showing date, location, time
+  - Worker count (filled/needed)
+  - Coverage percentage bar
+  - Status indicators (OPEN, FILLED, IN PROGRESS)
+- Order details view:
+  - Event name and location
+  - Roles and worker requirements
+  - Clock in/out times
+  - Estimated cost
+  - Coverage percentage
+  - Map integration with directions
+
+### Added - Coverage Monitoring
+- Coverage tab in bottom navigation
+- Real-time worker status dashboard:
+  - Checked In (green indicator)
+  - En Route (yellow indicator)
+  - Late (red indicator)
+  - Not Arrived status
+- Color-coded status badges
+- Worker information cards
+- Active shift monitoring
+
+### Added - Navigation
+- Bottom navigation bar with tabs:
+  - Coverage
+  - Billing
+  - Home
+  - Orders
+  - Reports
+- Settings menu accessible from home screen
+- Back navigation handling
+
+### Added - Settings
+- Settings page with options:
+  - Hubs management
+  - Profile editing
+  - Notifications preferences
+  - Log out
+
+### Technical Features
+- Firebase authentication integration
+- Data Connect backend integration
+- Google Maps Places API for address autocomplete
+- Real-time worker status tracking
+- Cost calculation engine
+- Coverage percentage calculations
+
+### Known Limitations
+- Orders require hub assignment
+- Currently supports one-time orders only
+- Order approval flow not yet implemented
+- RAPID, Recurring, and Permanent order types are placeholders
+
+---

apps/mobile/apps/staff_app/CHANGELOG.md

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+# Staff Mobile App - Change Log
+
+## [0.0.1-M3] - Milestone 3 - 2026-02-15
+
+### Added - Authentication & Onboarding
+- Phone number authentication with OTP verification
+- Staff onboarding flow with profile setup
+- Personal information collection (name, bio, languages)
+- Preferred work locations selection
+- Skills and industry selection
+
+### Added - Home Dashboard
+- Welcome screen with personalized greeting
+- Today's shifts section showing confirmed shifts
+- Tomorrow's shifts preview
+- Recommended shifts section based on profile
+- Quick action buttons (Find Shifts, Availability, Messages, Earnings)
+
+### Added - Shift Management
+- Find Shifts functionality to discover available work
+- Shift details view showing:
+  - Business name and location
+  - Hourly rate and estimated earnings
+  - Date, start time, end time
+  - Job requirements
+  - Map integration with directions
+- Shift booking/application process
+- Booking confirmation dialog
+- My Shifts view with week-by-week navigation
+- Color-coded shift status (Confirmed, Pending, Completed)
+
+### Added - Clock In/Out
+- Clock In page with slider interaction
+- Clock Out page with slider interaction
+- Automatic timestamp recording
+- Shift status updates upon clock in/out
+- Visual status indicators (green for checked in)
+
+### Added - Profile Management
+- Profile tab with personal information
+- Emergency Contact management:
+  - Contact name
+  - Relationship
+  - Phone number
+- Bank Account linking for direct deposit
+- Tax Forms section:
+  - W-4 form access
+  - I-9 form access
+- Time Card view:
+  - Historical shift records
+  - Hours worked tracking
+  - Earnings history
+
+### Added - Navigation
+- Bottom navigation bar with 5 tabs:
+  - Shifts
+  - Payments
+  - Home
+  - Clock In
+  - Profile
+- Tab bar hiding on specific pages
+
+### Technical Features
+- Firebase authentication integration
+- Data Connect backend integration
+- Google Maps integration for locations
+- Phone verification system
+- OTP code handling
+
+### Known Limitations
+- Newly created orders don't appear immediately in Find Shifts (requires vendor approval)
+- Limited to one-time order types in this milestone
+
+---