backend: use structured response modeling in public profile endpoint

[ShantKhatri]

Summary

In apps/backend/src/routes/public.ts, add a dedicated type interface for public profile responses and use it in the route.

Tasks

• create type PublicProfileResponse = { ... } in public.ts or shared type file.
• return typed object from profile endpoint.
• add comment and small API docs snippet.

Acceptance Criteria

• compile-time type safety for this route.
• encourages consistent API contracts.

[Harxhit]

Hi, I’d like to work on this issue. I understand the requirement to add a dedicated PublicProfileResponse type for the public profile route and use it to improve compile-time safety and API consistency. I can take this up and submit a PR.

[ShantKhatri]

Hi, I’d like to work on this issue. I understand the requirement to add a dedicated PublicProfileResponse type for the public profile route and use it to improve compile-time safety and API consistency. I can take this up and submit a PR.

Hi @Harxhit , Happy to assign you.

[Harxhit]

I have opened PR #69 for this issue.
Review it whenever you get free time. Happy to make any requested changes or improvements if needed.
One additional thought while working on the typed response modeling: in the future, it might also be worth considering Fastify response schemas/AJV validation for some public APIs, since that could provide runtime response validation and stronger OpenAPI integration alongside the existing TypeScript type safety.