Remove minimax health probe

[intentionally-left-nil]

Now that we are no longer selling minimax coding plans we can remove the daily health probe that is checking the plan state

[kilo-code-bot]

Code Review Summary

Status: No Issues Found | Recommendation: Merge

Executive Summary

This deletion-only PR removes the MiniMax token health cron probe, its library, tests, and the matching vercel.json schedule; no remaining references to the deleted modules were found and the cron removal is self-consistent.

Files Reviewed (5 files)

• apps/web/src/app/api/cron/minimax-token-health/route.test.ts (deleted)
• apps/web/src/app/api/cron/minimax-token-health/route.ts (deleted)
• apps/web/src/lib/coding-plans/minimax-token-health.test.ts (deleted)
• apps/web/src/lib/coding-plans/minimax-token-health.ts (deleted)
• apps/web/vercel.json (cron entry removed)

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_{Review guidance: REVIEW.md from base branch main}