## ADDED Requirements

### Requirement: Dashboard shows month-specific financial totals
The system SHALL return month-specific dashboard data for a requested `YYYY-MM` month using the local machine timezone for month boundaries.

#### Scenario: Dashboard totals are calculated for a populated month
- **WHEN** the user requests the dashboard for a month with expenses and paychecks
- **THEN** the system returns total expenses, total paychecks, net cash flow, and a category breakdown for that month

#### Scenario: Dashboard supports partial current-month data
- **WHEN** the user requests the dashboard for the current month before the month is complete
- **THEN** the system returns meaningful month-to-date totals and comparisons using the transactions recorded so far

### Requirement: Dashboard includes derived spending comparisons
The system SHALL provide derived comparisons for the selected month, including highest category, largest expense, average daily spend, and paycheck coverage information.

#### Scenario: Derived comparisons are available
- **WHEN** the selected month contains enough data for comparisons
- **THEN** the system returns the highest category, largest single expense, average daily spend, and spend-versus-paycheck coverage values

#### Scenario: Derived comparisons degrade safely for sparse data
- **WHEN** the selected month has no expenses or otherwise insufficient data for a comparison
- **THEN** the system returns null or empty-safe comparison fields instead of failing