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openspec/changes/archive/2026-02-17-fix-stats-chart-bugs/specs/chart-data-filtering/spec.md

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+## ADDED Requirements
+
+### Requirement: Line chart date range truncation
+The line chart SHALL display data only up to the current date, not the full natural period.
+
+#### Scenario: Monthly view shows data to current day
+- **GIVEN** today is the 15th of the month
+- **WHEN** the user views the monthly statistics chart
+- **THEN** the chart SHALL display data from the 1st to the 15th only
+- **AND** the X-axis SHALL NOT show dates beyond the current day
+
+#### Scenario: Weekly view shows data to current day
+- **GIVEN** today is Wednesday
+- **WHEN** the user views the weekly statistics chart  
+- **THEN** the chart SHALL display data from Monday to Wednesday only
+- **AND** no flat line segments SHALL appear for future dates
+
+#### Scenario: Yearly view shows data to current month
+- **GIVEN** today is in June
+- **WHEN** the user views the yearly statistics chart
+- **THEN** the chart SHALL display data from January to June only

openspec/changes/archive/2026-02-17-fix-stats-chart-bugs/specs/chart-label-overlay/spec.md

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+## ADDED Requirements
+
+### Requirement: Pie chart direct category labeling
+The pie chart SHALL display category names directly on or adjacent to their corresponding sectors.
+
+#### Scenario: Category labels rendered on pie sectors
+- **WHEN** the expense category pie chart is displayed
+- **THEN** each sector SHALL display its category name as a label
+- **AND** the label SHALL be positioned to not obscure the sector
+
+#### Scenario: Labels adapt to sector size
+- **GIVEN** a category represents less than 5% of total expenses
+- **WHEN** the pie chart renders
+- **THEN** the label for that small sector MAY be hidden to avoid clutter
+- **AND** the category SHALL still be identifiable via tooltip on hover
+
+#### Scenario: Label visibility in dark mode
+- **GIVEN** the application is in dark mode
+- **WHEN** the pie chart displays labels on sectors
+- **THEN** the label text color SHALL provide sufficient contrast against the sector color
+- **AND** labels SHALL remain readable against both light and dark sector colors

openspec/changes/archive/2026-02-17-fix-stats-chart-bugs/specs/chart-layout-constraint/spec.md

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+## ADDED Requirements
+
+### Requirement: Chart container boundary enforcement
+The chart SHALL be fully contained within its parent card container without overflow.
+
+#### Scenario: Chart renders within card boundaries
+- **WHEN** the statistics page displays a line chart in a card component
+- **THEN** the chart canvas SHALL NOT extend beyond the card's padding boundaries
+- **AND** the chart SHALL adapt to container resize events
+
+#### Scenario: Chart adapts to mobile viewport
+- **WHEN** the viewport width is less than 375px
+- **THEN** the chart SHALL scale down proportionally
+- **AND** no horizontal scrolling SHALL be required to view the full chart