feat(i18n): add ?lang= support to /api/wrapped (Year in Review) badge

[vanshikaMaheshwari]

Description

Fixes #5787

What does this PR do?

Adds lang query parameter support to the /api/wrapped ("Year in Review") badge, bringing it in line with every other badge in the CommitPulse family (/api/streak, monthly stats, heatmap, versus, languages, etc.).

Problem

The /api/wrapped badge had all 5 label strings (TOTAL CONTRIBUTIONS, TOP LANGUAGE, WEEKEND GRIND, PEAK DAY, BUSIEST MONTH) hardcoded in English inside the SVG template. Passing ?lang=hi (or any other supported language) had no effect, breaking the localization promise advertised for the rest of the badge family.

Changes

• lib/i18n/badgeLabels.ts — extended BadgeLabels interface with 5 new wrapped-specific keys and added translations for all 10 existing locales (en, zh, es, hi, pt, ko, ja, fr, ta, de)
• lib/validations.ts — added lang: z.enum(supportedLanguages).catch('en').default('en') to wrappedParamsSchema
• app/api/wrapped/route.ts — destructured lang from parsed params and passed it into BadgeParams
• lib/svg/generator.ts — called getLabels(params.lang) in generateWrappedSVG and replaced all 5 hardcoded English strings with label lookups
• lib/i18n/badgeLabels.test.ts — added wrapped / year-in-review keys describe block
• app/api/wrapped/tests/i18n.test.ts — new test file covering schema defaulting, all locales accepted, unsupported locale coercion, and translation spot-checks for Hindi, Japanese, and French

Pillar

• 🎨 Pillar 1 — New Theme Design
• 📐 Pillar 2 — Geometric SVG Improvement
• 🕐 Pillar 3 — Timezone Logic Optimization
• 🛠️ Other (Bug fix, refactoring, docs)

Visual Preview

Before (?lang=hi): labels render in English
After (?lang=hi): labels render in Hindi

Checklist before requesting a review:

• I have read the CONTRIBUTING.md file.
• I have tested these changes locally (localhost:3000/api/streak?user=YOUR_USERNAME).
• I have run npm run format and npm run lint locally and resolved all errors (CI will fail otherwise).
• My commits follow the Conventional Commits format (e.g., feat(themes): ..., fix(calculate): ...).
• I have updated README.md if I added a new theme or URL parameter.
• I have started the repo.
• I have made sure that i have only one commit to merge in this PR.
• The SVG output matches the CommitPulse "premium quality" aesthetic standard (no raw elements, smooth animations, correct fonts).
• (Recommended) I joined the CommitPulse Discord community for contributor discussions, mentorship, and faster PR support.

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[Aamod-Dev]

Great i18n feature

[Aamod-Dev]

Difficulty: intermediate – Adds ?lang= i18n support to /api/wrapped Year in Review badge.

Quality: clean – Internationalization.

Type: feature – Localization support.

Great i18n feature!

[Aamod-Dev]

Review

Already labeled. Adds lang parameter to wrappedParamsSchema and passes it to wrapped SVG generation. Includes i18n test coverage.

Approved! 🚀