## License Activation Implementation

- Created `license_activation` table for better semantic clarity.
- Implemented `ensureLicenseActivationInitialized` with UPSERT logic and singleton pattern.
- Added ORPC endpoints `license.getActivation` and `license.activate`.
- Used `db:push` to handle migration in dev environment when conflicts occur.
- Fixed type mismatch in `device.router.ts` where `Date` was returned instead of `number` for timestamp fields.