## ADDED Requirements

### Requirement: Clear all course selections
The course selection panel SHALL provide a "Clear All" button that resets all pinned course selections at once.

#### Scenario: Clear all with some pinned
- **WHEN** at least one course is pinned and the user clicks "Clear All"
- **THEN** all pinned courses SHALL be unpinned and every elective set SHALL return to the open state showing all course options

#### Scenario: Clear all button visibility
- **WHEN** no courses are pinned
- **THEN** the "Clear All" button SHALL not be visible

#### Scenario: Clear all button visible
- **WHEN** at least one course is pinned
- **THEN** the "Clear All" button SHALL be visible in the course selection panel header

### Requirement: State persistence after clear all
After clearing all selections, the cleared state SHALL be persisted to localStorage like any other state change.

#### Scenario: Persistence
- **WHEN** the user clicks "Clear All" and reloads the page
- **THEN** all sets SHALL remain in the open (unpinned) state