Final QA and release check

I completed a final browser QA pass on SiriusOS before shipping.

• Confirmed the welcome screen opens without a password
• Opened About, Terminal, Stargazer, Notes, and Calculator
• Verified multiple windows can stay open together
• Verified close, minimize, and maximize controls are present
• Confirmed the public GitHub Pages deployment loads correctly
• Checked the browser console and found no errors or warnings

The custom space-themed interface and interactive Stargazer make this more than a copy of the guide. The project is now ready for mission review.

Demo: https://siriusw823.github.io/sirius-webos/

Source: https://github.com/SiriusW823/sirius-webos