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feat: ongoing problem set additions #13

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feat: ongoing problem set additions #13

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5cffb3d
chore: initialize problem additions branch
Zero-1016 Feb 19, 2026
c91aa3a
feat: add stock prices and tower signal problems
Zero-1016 Feb 19, 2026
53c112d
refactor: remove successRate from problem schema
Zero-1016 Feb 19, 2026
35aff4d
feat: add process scheduler problem
Zero-1016 Feb 19, 2026
3ff6d90
feat: add three new interview-style problems
Zero-1016 Feb 19, 2026
7e3fc02
feat: add NEW tag for branch-added problems
Zero-1016 Feb 19, 2026
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9 changes: 9 additions & 0 deletions components/problem-card.tsx
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Original file line number Diff line number Diff line change
Expand Up @@ -68,6 +68,7 @@ export function ProblemCard({
const Icon = iconMap[problem.categoryIcon] || Hash
const diffStyle = difficultyConfig[problem.difficulty]
const localized = getLocalizedProblemText(problem, language)
const isNew = (problem.tags ?? []).includes("NEW")

return (
<motion.div
Expand Down Expand Up @@ -103,6 +104,14 @@ export function ProblemCard({
<h3 className="truncate text-sm font-semibold text-foreground lg:text-base">
{localized.text.title}
</h3>
{isNew && (
<Badge
variant="secondary"
className="border-0 text-[10px] font-semibold bg-[#fff4e5] text-[#b85a00]"
>
NEW
</Badge>
)}
{localized.isFallback && (
<Badge
variant="secondary"
Expand Down
9 changes: 9 additions & 0 deletions components/problem-description.tsx
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Original file line number Diff line number Diff line change
Expand Up @@ -72,6 +72,7 @@ export function ProblemDescription({ problem }: ProblemDescriptionProps) {
const { language, copy } = useAppLanguage()
const diffStyle = difficultyConfig[problem.difficulty]
const localized = getLocalizedProblemText(problem, language)
const isNew = (problem.tags ?? []).includes("NEW")

return (
<ScrollArea className="h-full">
Expand All @@ -85,6 +86,14 @@ export function ProblemDescription({ problem }: ProblemDescriptionProps) {
<h1 className="text-xl font-bold text-foreground lg:text-2xl">
{localized.text.title}
</h1>
{isNew && (
<Badge
variant="secondary"
className="border-0 text-xs font-semibold bg-[#fff4e5] text-[#b85a00]"
>
NEW
</Badge>
)}
{localized.isFallback && (
<Badge
variant="secondary"
Expand Down
7 changes: 2 additions & 5 deletions docs/problem-authoring-rules.md
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Original file line number Diff line number Diff line change
Expand Up @@ -13,7 +13,6 @@ Required fields:
- `category`
- `categoryIcon`
- `difficulty`
- `successRate`
- `description`
- `examples`
- `constraints`
Expand Down Expand Up @@ -67,7 +66,7 @@ Done when:

### Module 3: Difficulty Calibration
Use when:
- Difficulty (`Easy`/`Medium`/`Hard`) or `successRate` is uncertain.
- Difficulty (`Easy`/`Medium`/`Hard`) is uncertain.

Inputs:
- Constraints
Expand All @@ -76,11 +75,9 @@ Inputs:

Outputs:
- Final `difficulty`
- Initial `successRate` estimate

Done when:
- Difficulty and constraints are aligned.
- `successRate` is plausible for the selected difficulty.

### Module 4: Example Crafting
Use when:
Expand Down Expand Up @@ -133,5 +130,5 @@ Stop after the smallest sufficient set of modules is complete.
- [ ] `functionName` matches `starterCode`
- [ ] `examples` and `testCases` are consistent
- [ ] Boundary behavior is explicit
- [ ] Difficulty and `successRate` are coherent
- [ ] Difficulty is coherent
- [ ] EN/KO are semantically aligned (if KO exists)
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