[Bug] Open at Login greyed out

## Bug Report

### Description
Open at Login
Move Cotabby to the Applications folder and relaunch to enable this.

The app is in the Applications folder

### Environment
- **Cotabby version:** 0.4.2-beta
- **macOS version:** 15.7.7
- **Mac model:** MacBookPro18,2
- **Chip:** Apple M1 Max
- **Memory:** 32 GB

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*Submitted via tabby feedback form*