fix: make ai fields to be optional

[recallwei]

Related ISSUE

link #163

Type Of Change

• 🐞 Bug fix (non-breaking change which fixes an issue)
• ✨ New feature (non-breaking change which adds functionality)
• 📝 Document (This change requires a documentation update)
• 🎨 Theme style (Theme style beautification)
• ⚠ Breaking change (fix or feature that would cause existing functionality to not work as expected)
• 🔨 Workflow (Workflow changes)

Clear Describe

Make AI fields to be optional.

Description

For people who don't use AI integration.

[netlify]

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🔨 Latest commit	4ccd343

[Zhengqbbb]

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