## Why

The cancelled course "Managing Growing Companies" in Summer Elective Set 2 needs to be replaced with a new course "Innovation and Design" that counts towards different specializations (BRM, ENT, MKT, STR-S2 instead of ENT, LCM, MGT, STR-S1).

## What Changes

- Remove the cancelled course entry `sum2-managing-growing` ("Managing Growing Companies") from the course data
- Add a new course `sum2-innovation-design` ("Innovation and Design") in Summer Set 2 with qualifications: Brand Management (BRM), Entrepreneurship and Innovation (ENT), Marketing (MKT), Strategy (STR, S2 marker)
- Update test assertions to reflect changed specialization counts and Strategy marker counts

## Capabilities

### New Capabilities

_None — this is a data change, not a new capability._

### Modified Capabilities

_None — no spec-level behavior changes, only course data._

## Impact

- `app/src/data/courses.ts` — replace cancelled course entry with new course
- `app/src/data/__tests__/data.test.ts` — update assertions:
  - STR S1 count: 10 → 9
  - STR S2 count: 7 → 8
  - BRM across sets: 6 → 7
  - MKT across sets: 7 → 8
  - LCM across sets: 9 → 8
  - MGT across sets: 11 → 10