Summary: Bubble positions as the only no-code AI app builder

Why It Matters: The product is moving away from general "visual editing" language to claim a unique market position as the only platform combining no-code and AI for both web and mobile.

What Changed:

• Updated the main page title to "Build web & mobile apps with the only no-code AI app builder."
• Removed the phrase "AI app development meets visual, no-code editing."
• Added "Platform" to the end of a descriptive text string.