Add analytics API client (frontend)

[phertyameen]

Description

Add a typed fetch client wrapping calls to the backend's /analytics/* endpoints, using NEXT_PUBLIC_API_URL the same way other frontend API calls do, with a shared DateRange type mirroring the backend DTO.

Why this matters

Every dashboard widget needs a consistent, typed way to call the analytics API instead of ad-hoc fetch calls scattered across components.

Files to touch

• frontend/src/lib/analytics/analytics-client.ts

Acceptance Criteria

• Client exposes one typed function per backend endpoint
• Errors are surfaced in a consistent shape for components to handle

Notes

This issue is part of the new analytics module effort (tracking, aggregation,
and reporting on player/game activity). Please keep new code inside
backend/src/analytics/ following the same module/controller/service/provider
layout used by existing modules (e.g. progress, streak, quests).

[sideeqa]

please i would like to work on this task

[Ummi-001]

Hi, I am a full stack developer I would really like to contribute on this project, as I clearly understand what is needed to be done.

If available, please assign it to me.
ETA is in 6 hours.

[grantfox-oss]

🦊 GrantFox — @Ummi-001 has been assigned to this issue as part of the Official Campaign | FWC26 campaign!

Next steps:

1. Open a Pull Request referencing this issue (e.g., Closes #571)
2. Your PR will be reviewed by the MindBlockLabs maintainers

Good luck! Track your progress on GrantFox.

[grantfox-oss]

🎉 This issue has been marked as completed on GrantFox as part of the Official Campaign | FWC26 campaign!

@Ummi-001's PR #591 was approved and merged by @phertyameen.

🏆 @Ummi-001: You earned 35 FoxPoints for this contribution! Your current tier: Explorer (347 total points). Track your full progress on GrantFox.

👏 Great work, @Ummi-001! Keep contributing to MindBlockLabs.