fix(practice): route finalized contest problems to Contest Questions

[codenamed22]

Problem

After finalizing the HireUp contest, its three problems (Service Call Profiler, Driver Rebalancing Across City Corridors, Best Dispatch Hub) showed up under Week 5 on the practice sheet instead of the Contest Questions section.

Root cause

app/problems/page.tsx decided whether a problem was a contest question purely by looking for a "Contest" string in its tags array:

const contestProblems = problems.filter((problem) => problem.tags.includes("Contest"));
const weekProblems = problems.filter((problem) => !problem.tags.includes("Contest"));

Regular contest problems get that tag at seed time in prisma/contest-problem-set.js, but HireUp problems are tagged ["Uber", "HireUp", ...] in prisma/hireup-problem-set.js. Finalization only flips published: true — it never adds the tag. So once the HireUp contest was finalized, its problems became visible, failed the tag check, and got swept into the weekly time-budget grouping in groupProblemsByWeek, landing in Week 5.

Fix

Key the split off actual contest membership (the contestProblems relation) rather than a tag, keeping the tag check as a fallback:

const isContestProblem = (problem: (typeof problems)[number]) =>
  problem.contestProblems.length > 0 || problem.tags.includes("Contest");

The Prisma query gains a contestProblems: { select: { contestId: true }, take: 1 } selection to support this.

Notes

• Retroactive — no data migration and no re-finalizing required. Existing tagged contest problems are unaffected since they satisfy both conditions.
• Any future contest (HireUp or otherwise) now routes correctly regardless of how its problems are tagged.
• Week numbering re-flows once the three problems leave the week buckets.

Testing

• Typecheck clean
• Reload /problems and confirm the three HireUp problems appear under Contest Questions

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Project	Deployment	Actions	Updated (UTC)
shardup-site	Ready	Preview	Aug 13, 2026 6:22pm