Write a SpacetimeDB backend module in TypeScript that defines one table and an init reducer that seeds rows on database initialization.

TABLE
- user
  - Fields:
    - id: number (u64, primary key, autoInc)
    - name: string
    - age: number (i32)
    - active: boolean

REDUCERS
- init: insert exactly two rows on database initialization (IDs are auto-assigned):
  1. (name="Alice", age=30, active=true)
  2. (name="Bob", age=22, active=false)