Fix `AI()` inferred return types

[nathanclevenger]

import { AI } from '@/lib/ai'

export const { leanCanvas } = AI({
  leanCanvas: {
    productName: 'name of the product or service',
    problem: ['top 3 problems the product solves'],
    solution: ['top 3 solutions the product offers'],
    uniqueValueProposition: 'clear message that states the benefit of your product',
    unfairAdvantage: 'something that cannot be easily copied or bought',
    customerSegments: ['list of target customer segments'],
    keyMetrics: ['list of key numbers that tell you how your business is doing'],
    channels: ['path to customers'],
    costStructure: ['list of operational costs'],
    revenueStreams: ['list of revenue sources'],
    recommendations: ['list of recommendations based on the analysis'],
  },
})

in this example, leanCanvas has an inferred TypeScript type of const leanCanvas: never so I think something is still wrong with the TypeScript generics, as the type should be (args: any) => Promise<{ productName: string, … >

PR #2098 was merged, but it still shows a return of never in .ai/functions/leanCanvas.ts

[linear]

ENG-820 Fix `AI()` inferred return types