## ADDED Requirements

### Requirement: Mode description explains practical behavior
The ModeToggle component SHALL display a multi-sentence description for each optimization mode that explains the algorithm's practical behavior and when a user would choose it.

For "Maximize Count", the description SHALL convey that:
- The algorithm finds the combination of specializations that achieves the highest count (up to 3).
- The user's ranking is used only to break ties when multiple combinations achieve the same count.

For "Priority Order", the description SHALL convey that:
- The algorithm processes specializations in the user's ranked order, top to bottom.
- It locks in the highest-ranked achievable specialization first, then adds more if feasible.
- The user's ranking directly controls which specializations are prioritized.

#### Scenario: User selects Maximize Count mode
- **WHEN** the optimization mode is set to "maximize-count"
- **THEN** a description is displayed that explains the algorithm finds the largest possible set of specializations and uses ranking only as a tiebreaker

#### Scenario: User selects Priority Order mode
- **WHEN** the optimization mode is set to "priority-order"
- **THEN** a description is displayed that explains the algorithm guarantees the top-ranked specialization first and greedily adds more in rank order

#### Scenario: Description updates on mode switch
- **WHEN** the user switches from one mode to the other
- **THEN** the description text SHALL update immediately to reflect the newly selected mode