Trackmate - Expenses

1. Bar Chart (Intact & Improved)
• Displays either daily (Sun–Sat) or day numbers (1–31) depending on the selected range (Week, Month, Custom).
• Dynamically adjusts height based on transaction values.
• Uses light mint green for income and deep red-orange for expenses.
• Always shows the last 7 days (or selected custom range), even if data is missing.

2. Transaction View Modes
• Toggle between Expenses, Income, and Net using a SegmentedButton.
• The chart updates accordingly.

3. Date Range Selector
• Switch between:
• This Week
• This Month
• Custom Range (with a showDateRangePicker)

4. Category Spend Summary
• Responsive grid layout with:
• Category title
• Percentage of total spend
• Gradient cards based on theme (light or dark)
5. Theming via theme.dart
• Respects both dark and light theme styling.
• Uses colorScheme throughout for consistent color handling.