App requires macOS 15.7 but description states "Requires macOS 15 Sequoia or later"

[hangingwithshu]

macOS version: 15.6 (Sequoia)
App version: 1.5.2 (Textream v1.5.2.dmg)

Issue:
The app description states "Requires macOS 15 Sequoia or later", but the LSMinimumSystemVersion in the app bundle's Info.plist is set to 15.7, causing macOS to block the app with "You can't use this version of the application with this version of macOS."

Verified with:
```
$ defaults read /Volumes/Textream\ 1/Textream.app/Contents/Info.plist LSMinimumSystemVersion
15.7
```

Expected behavior: The app should launch on macOS 15.0+ as described.

Fix: Set LSMinimumSystemVersion to 15.0 in the build configuration before packaging.