Experimental welcome-package release.

## Reinstall step

After updating the desktop app, click **Install / Update** on the Management Service card so the refreshed on-host service binary is pushed.

## Added

- **Welcome package worker** in the guest management service. It detects players from the game Postgres database, records per-player/package grant state in the service SQLite database, and grants configured items through the existing MQ server-command path when the player is online.
- **Welcome package configuration** in Schedule settings: enable/disable, package version, poll interval, and a JSON item list shaped like:

```json
[
  { "itemName": "PlantFiber", "quantity": 10, "durability": 1.0 }
]
```

- **Manual welcome-package scan** button in Automated Tasks so the first test pass does not have to wait for the interval.
- **Recent welcome grants** summary in the Schedule settings card, backed by the daemon ledger.

## Notes

- Changing the package version grants the package again to already-seen players.
- This experiment only grants inventory items. Progression unlocks should stay out of direct DB writes until the game-owned tables and side effects are fully mapped.