[RFC]: Fix lint errors in d.ts TypeScript declaration files

[Planeshifter]

With #48 implemented, we should resolve all lint errors across the project inside index.d.ts TypeScript declaration files.

[Planeshifter]

ai_allowed: false
time_estimate_with_ai_minutes: 90
time_estimate_without_ai_minutes: 180
prior_experience: 5
ai_tools_used: []
actual_time_minutes:
post_review_time_minutes:
estimated_time_ai_allowed_minutes:
perceived_effort: ""