Write a SpacetimeDB backend module in TypeScript that defines one table and seeds two rows.

TABLE
- account
  - Fields:
    - id: number (u64, primary key, autoInc)
    - email: string (unique)
    - name: string
  - Index: byName (btree on name)

REDUCERS
- seed: insert two rows (IDs are auto-assigned):
  - (email="a@example.com", name="Alice")
  - (email="b@example.com", name="Bob")