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Sanity#202

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ViktorSvertoka merged 8 commits into
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sanity
Jan 25, 2026
Merged

Sanity#202
ViktorSvertoka merged 8 commits into
developfrom
sanity

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@KomrakovaAnna
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@KomrakovaAnna KomrakovaAnna commented Jan 25, 2026

  • Оптимізовано Recommended Posts: GROQ лімітує 3 пости, без fetch‑all + shuffle. PostDetails.tsx
  • Додано click‑outside‑to‑close для search dropdown. BlogHeaderSearch.tsx
  • Додано description у metadata для /blog/[slug]. page.tsx
  • Додано Schema.org JSON‑LD (Article + BreadcrumbList). PostDetails.tsx
  • Додано для дат у блозі.
    BlogCard.tsx, BlogFilters.tsx, PostDetails.tsx, page.tsx

Summary by CodeRabbit

  • New Features

    • Added SEO schema markup (JSON-LD) for blog posts with breadcrumbs and article metadata.
    • Enhanced search dropdown with click-outside-to-close behavior.
  • Improvements

    • Updated date rendering across blog with semantic HTML time elements.
    • Extended blog post metadata to include descriptions.

✏️ Tip: You can customize this high-level summary in your review settings.

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coderabbitai Bot commented Jan 25, 2026

📝 Walkthrough

Walkthrough

The PR enhances blog components with SEO improvements and semantic HTML. PostDetails.tsx adds JSON-LD structured data for breadcrumbs and blog posts while introducing <time> elements across multiple blog files. AuthorProfile state management is refactored in BlogFilters, and BlogHeaderSearch improves UX with click-outside dropdown closure.

Changes

Cohort / File(s) Summary
SEO & Metadata
frontend/app/[locale]/blog/[slug]/PostDetails.tsx, frontend/app/[locale]/blog/[slug]/page.tsx
Added JSON-LD structured data (BreadcrumbList and BlogPosting schemas) to PostDetails; extended generateMetadata query to fetch and include truncated description field in metadata object.
Semantic Date Rendering
frontend/app/[locale]/blog/category/[category]/page.tsx, frontend/components/blog/BlogCard.tsx, frontend/components/blog/BlogFilters.tsx
Replaced plain date spans with semantic <time> elements using formatBlogDate and publishedAt dateTime attributes across featured posts, blog cards, and filter sections.
Author Profile State Refactoring
frontend/components/blog/BlogFilters.tsx
Changed authorProfile state shape from Author | null to { name: string; data: Author } | null; introduced selectedAuthorData memoization; adjusted effect dependencies on locale and author name.
Search UX Enhancement
frontend/components/blog/BlogHeaderSearch.tsx
Introduced click-outside-to-close behavior via containerRef; improved loading gate to fetch only when open with no items and loading active; added startLoading helper.
Minor Cleanup
frontend/components/blog/BlogCategoryLinks.tsx
Removed single comment line with no functional changes.

Estimated code review effort

🎯 3 (Moderate) | ⏱️ ~25 minutes

Possibly related PRs

  • Sanity #145 — Overlaps with PostDetails.tsx modifications for metadata, date rendering, and recommended-posts section.
  • Sanity #196 — Shares direct code-level changes across blog files (PostDetails.tsx, BlogCard.tsx, BlogFilters.tsx) with semantic <time> element rendering and date formatting updates.
  • Sanity #119 — Modifies the same PostDetails.tsx and page.tsx files with related locale-aware data fetching and component signature changes.

Suggested labels

enhancement

Suggested reviewers

  • AM1007
  • ViktorSvertoka

Poem

🐰 Blog posts bloom with schemas bright,
JSON-LD bringing SEO light,
Time elements nest so clean and true,
Semantic HTML through and through!
Click outside, the dropdowns close—
A cleaner web from whisker to nose!

🚥 Pre-merge checks | ✅ 1 | ❌ 2
❌ Failed checks (1 warning, 1 inconclusive)
Check name Status Explanation Resolution
Docstring Coverage ⚠️ Warning Docstring coverage is 16.67% which is insufficient. The required threshold is 80.00%. Write docstrings for the functions missing them to satisfy the coverage threshold.
Title check ❓ Inconclusive The title "Sanity" is vague and generic, providing no meaningful information about the changeset's primary purpose or content. Replace with a descriptive title that summarizes the main changes, such as 'Add SEO metadata, semantic time elements, and search improvements to blog' or similar.
✅ Passed checks (1 passed)
Check name Status Explanation
Description Check ✅ Passed Check skipped - CodeRabbit’s high-level summary is enabled.

✏️ Tip: You can configure your own custom pre-merge checks in the settings.

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Actionable comments posted: 0

Caution

Some comments are outside the diff and can’t be posted inline due to platform limitations.

⚠️ Outside diff range comments (1)
frontend/components/blog/BlogHeaderSearch.tsx (1)

69-85: Reset isLoading when the dropdown closes to avoid a stuck state.
If the menu is closed before the fetch resolves, active becomes false and the finally block never clears isLoading. That prevents future loads because startLoading won’t run while isLoading stays true.

🧯 Suggested fix
  useEffect(() => {
-    if (!open || items.length || !isLoading) return;
+    if (!open) {
+      if (isLoading) setIsLoading(false);
+      return;
+    }
+    if (items.length || !isLoading) return;
     let active = true;
     fetch(SEARCH_ENDPOINT, { cache: 'no-store' })
       .then(response => (response.ok ? response.json() : []))
       .then((result: PostSearchItem[]) => {
         if (!active) return;
         setItems(Array.isArray(result) ? result : []);
       })
       .catch(() => {
         if (!active) return;
         setItems([]);
       })
       .finally(() => {
         if (!active) return;
         setIsLoading(false);
       });
     return () => {
       active = false;
     };
   }, [open, items.length, isLoading]);
🧹 Nitpick comments (2)
frontend/app/[locale]/blog/[slug]/PostDetails.tsx (1)

215-219: Consider handling missing NEXT_PUBLIC_SITE_URL more explicitly.

If NEXT_PUBLIC_SITE_URL is not set, baseUrl will be undefined, and no JSON-LD will be generated. This is safe but silent. Consider logging a warning during development or documenting this requirement.

frontend/components/blog/BlogHeaderSearch.tsx (1)

175-181: Optional cleanup: remove the unreachable if (!open) branch in onChange.
The input only renders when open is true, so this branch never executes. Consider dropping it or moving the open/startLoading logic to the open trigger only.

@ViktorSvertoka ViktorSvertoka merged commit 09131de into develop Jan 25, 2026
9 checks passed
@ViktorSvertoka ViktorSvertoka deleted the sanity branch January 25, 2026 12:39
@coderabbitai coderabbitai Bot mentioned this pull request Jan 25, 2026
ViktorSvertoka added a commit that referenced this pull request Jan 25, 2026
* (SP: 1) [Security] Enforce origin posture for shop APIs (admin/checkout same-origin; internal/webhooks non-browser) + docs

* (SP: 1) [DB] Align stripe_events.order_id FK CASCADE across schema and migrations

* feat(i18n): localize quiz anti-cheat, header and blog filters (#175)

* feat(Blog): Adding last published post to the blog and category page, recommended posts, Changing styles to one unified format, Bug fixes

* Update leaderboard-style

* Update leaderboard-style

* teat(Blog): fix of hover on author, fix of the line

* (SP: 3) [Observability] Extend structured logging + correlation IDs across all shop routes; purge console.*; enforce explicit error codes

* (SP: 1) [Admin][Security] Add safe product delete (PRODUCT_IN_USE) + mobile cards UI; tighten env/docs, locale normalization, cache-control, and logging semantics

* fix: npm installing

* (SP: 1) [Admin] Align products list in use checks with DB column names (order_items/inventory_moves)

* fix:Update leaderboard: fixed background

* fix: remove email from CurrentUser type to prevent PII exposure

* refactor: align leaderboard UI with brand style (fixed bg, css vars, podium glow)

* (SP: 1) [Frontend] About Us Page. Fixed game, topics, mobile layout

- Fixed mobile tabs in FeaturesSection (icon-only on mobile)
- Fixed game bugs: collision detection, animation, scoring system
- Added multiple obstacle types with level progression
- Improved game sizing for mobile while preserving desktop
- Updated TopicsSection with local SVG icons and hover borders
- Made DynamicGridBackground static grid opt-in via showStaticGrid prop
- Limited SponsorsWall to display max 10 sponsors
- Optimized CommunitySection button layout for mobile

* refactor: update accent color hover effects to Footer

- Update Footer links to use --accent-primary on hover
- Update ThemeToggle icons to use --accent-primary on hover
- Both components adapt colors to light/dark theme

* refactor: improve accessibility

- Add focus-visible styles for keyboard navigation accessibility

* (SP: 1) [Shop] Fix Stripe checkout success redirect (remove duplicate locale /uk/uk) (#186)

* fix:leaderboard  update leaderboard-style (#187)

* fix:leaderboard update leaderboard-style on mobile (#188)

* fix:leaderboard  update leaderboard-style

* fix:leaderboard update leaderboard-style on mobile

* fix: resolve CodeRabbit issues and conflicts

---------

Co-authored-by: Viktor Svertoka <victor.svertoka@gmail.com>

* (SP: 1) [Frontend] Changing hero headline on shop main page (#190)

* (SP: 1) [Shop] Fix checkout redirect 404 by removing duplicate locale in in-app routes and Stripe return_url

* (SP: 1) [Shop] Fix locale cart page and orderid page

* (SP: 1) [Frontend] Changin hero headline on shop main page

* (SP: 1) [Frontend] Fix styles shop home page, buttons (#191)

* Feature/leaderboard style update (#192)

* (SP: 7) [UI] Quiz UI polish: tabs styling, category accents, color scheme (#181, #193, #194) (#195)

* Sanity (#196)

* feat(Blog):fix for clickable link in post details, fix for author details

* feat(Blog):refactoring after removing author modal

* feat(Blog): fix unified date format

* (SP: 3) [AI] Add AI word helper with Groq integration (#200)

* (SP: 3) [AI] Add AI word helper with Groq integration

- Implement Groq API with Llama 3.1 70B model
- Add text selection detection on Q&A page
- Create floating "Explain" button
- Build draggable modal with 3-language support (uk/en/pl)
- Add localStorage caching for instant repeated lookups
- Implement guest CTA (login/signup)
- Add rate limiting (10 requests/min)
- Auth-gated feature (registered users only)

Components:
- SelectableText: Detects text selection
- FloatingExplainButton: Appears on selection
- AIWordHelper: Main modal with explanations

* (SP: 1) i18n: fix Polish locale and set EN as default

* Sanity (#202)

* feat(Blog):fix for clickable link in post details, fix for author details

* feat(Blog):refactoring after removing author modal

* feat(Blog): fix unified date format

* feat(Blog): Fix for  click-outside-to-close search, recommended posts are limited to 3

* feat(Blog): selectedAuthorData fixed

* feat(Blog): Added description for /blog/[slug] metadata, Added Schema.org JSON‑LD for Article (BlogPosting) and BreadcrumbList , Added <time datetime> tags where blog dates renders

* Sanity (#203)

* feat(Blog):fix for clickable link in post details, fix for author details

* feat(Blog):refactoring after removing author modal

* feat(Blog): fix unified date format

* feat(Blog): Fix for  click-outside-to-close search, recommended posts are limited to 3

* feat(Blog): selectedAuthorData fixed

* feat(Blog): Added description for /blog/[slug] metadata, Added Schema.org JSON‑LD for Article (BlogPosting) and BreadcrumbList , Added <time datetime> tags where blog dates renders

* feat(Blog): fix hover social links, fixed duplication not found search

* (SP: 3) [Frontend] Refactor Header UI and navigation states (#201)

* (SP: 3) [Frontend] Refactor Header UI and navigation states

- Add icon to the language switcher

- Add GitHub icon with stars indicator (frontend only)

- Update logo styles

- Improve touch interaction styles

- Verify correct placement and alignment of all header components

- Make mobile header modal full-screen

- Disable background scroll when mobile menu is open

- Highlight active navigation item

- Update navigation styles:

- Highlight Shop link when user is on Home pages
- Highlight Home link when user is on Shop pages
- Style changes only, no routing or logic changes

* fix CodeRabbit

* update HeaderButton styles

* fix: add accessibility for HeaderButton

* (SP: 3) [Testing] Vitest config + unit + integration tests for quiz module (#204)

* feat(quiz-ui): quiz UI polish - tabs, category accents, color scheme (issues #181, #193, #194)

- Refactor QaTabButton to shared CategoryTabButton component
- Add category accent colors to QuizCard, buttons, progress indicators
- Standardize colors with CSS variables, traffic light timer
- Add DynamicGridBackground to quizzes list page
- Border-only answer feedback, semi-transparent progress styles

* docs: update .gitignore

* fix(quiz): align disqualification threshold with warning banner

Changed violationsCount > 3 to >= 3 in QuizResult points block
to match the warning banner threshold at line 124.

* feat(quiz-testing): add quiz unit tests

- Configure Vitest for quiz module
- Add test factories and setup utilities
- Add quiz-crypto tests (13 tests)
- Add quiz-session tests (12 tests)

* test(quiz): add integration tests for verify-answer API and useAntiCheat hook (#199)

- verify-answer.test.ts: 8 tests for API endpoint
  - Correct/wrong answer verification
  - Validation errors (missing fields, tampered data)
  - Security: rejects modified encrypted answers

- quiz-anticheat.test.ts: 10 tests for useAntiCheat hook
  - Detects copy, paste, context-menu, tab-switch events
  - Respects isActive flag
  - Reset and cleanup functionality

Total quiz tests: 52 (9 setup + 25 unit + 18 integration)

* test(quiz): expand test coverage to 90%+ with hooks, API routes, and UI flow

Add 28 new tests covering:
- useQuizSession hook (6 tests)
- useQuizGuards hook (8 tests)
- guest-quiz storage (5 tests)
- guest-result API route (5 tests)
- quiz-slug API route (3 tests)
- QuizContainer UI flow (1 test)

Coverage: 35% -> 90.94% (quiz scope)
Tests: 52 -> 80

* chore: remove coverage-quiz from git, add to .gitignore

* chore: add coverage-quiz to .gitignore, fix quiz guards test

* Feature/leaderboard style update (#206)

* fix:leaderboard  update leaderboard-style

* fix:leaderboard update leaderboard-style on mobile

* fix: resolve CodeRabbit issues and conflicts

* fix: move row border to first cell to resolve CodeRabbit issue

* fix: move row border to first cell to resolve CodeRabbit issue new

* fix(leaderboard): improve table mobile

* fix(leaderboard): correct malformed shadow class syntax for avatar glow

* test(q&a): add comprehensive qa tests and coverage setup (#208)

* test(q&a): add comprehensive qa tests and coverage setup

* test(q&a): align mocks and reset in qa tests

* (SP: 1) [Frontend] Remove Contacts References (#211)

* test(q&a): add comprehensive qa tests and coverage setup

* test(q&a): align mocks and reset in qa tests

* chore(nav): remove contacts page references

* Sanity (#209)

* feat(Blog):fix for clickable link in post details, fix for author details

* feat(Blog):refactoring after removing author modal

* feat(Blog): fix unified date format

* feat(Blog): Fix for  click-outside-to-close search, recommended posts are limited to 3

* feat(Blog): selectedAuthorData fixed

* feat(Blog): Added description for /blog/[slug] metadata, Added Schema.org JSON‑LD for Article (BlogPosting) and BreadcrumbList , Added <time datetime> tags where blog dates renders

* feat(Blog): fix hover social links, fixed duplication not found search

* feat(Blog): Added: breadcrumbs to the post details page and updated the BreadcrumbList, logo to the cocial links in User info, Fixed: main container alignment, category navigation in breadcrumbs

* feat(Blog): Added: breadcrumbs to the post details page and updated the BreadcrumbList, logo to the cocial links in User info, Fixed: main container alignment, category navigation in breadcrumbs

* feat(Blog): Added scroll on the main blog page on filtering by author, fied breadcrumbs category translaion, added category to the recommended cards, fixed search for localisations

* feat(Blog): Changed image size on the post details page

* chore(release): update changelog for v0.5.0

* chore(release): v0.5.0

---------

Co-authored-by: liudmylasovetovs <milkaegik@gmail.com>
Co-authored-by: Tetiana Zorii <131365289+TiZorii@users.noreply.github.com>
Co-authored-by: Anna <komrakova.anna@gmail.com>
Co-authored-by: AlinaRyabova <alinavr7@gmail.com>
Co-authored-by: Yevhenii Datsenko <yevheniydatsenko@gmail.com>
Co-authored-by: YNazymko12 <yulychka12@gmail.com>
Co-authored-by: liudmylasovetovs <127711697+liudmylasovetovs@users.noreply.github.com>
Co-authored-by: AlinaRyabova <115992255+AlinaRyabova@users.noreply.github.com>
Co-authored-by: Lesia Soloviova <106915140+LesiaUKR@users.noreply.github.com>
Co-authored-by: Yuliia Nazymko <122815071+YNazymko12@users.noreply.github.com>
ViktorSvertoka added a commit that referenced this pull request Jan 31, 2026
* (SP: 1) [Security] Enforce origin posture for shop APIs (admin/checkout same-origin; internal/webhooks non-browser) + docs

* (SP: 1) [DB] Align stripe_events.order_id FK CASCADE across schema and migrations

* feat(i18n): localize quiz anti-cheat, header and blog filters (#175)

* feat(Blog): Adding last published post to the blog and category page, recommended posts, Changing styles to one unified format, Bug fixes

* Update leaderboard-style

* Update leaderboard-style

* teat(Blog): fix of hover on author, fix of the line

* (SP: 3) [Observability] Extend structured logging + correlation IDs across all shop routes; purge console.*; enforce explicit error codes

* (SP: 1) [Admin][Security] Add safe product delete (PRODUCT_IN_USE) + mobile cards UI; tighten env/docs, locale normalization, cache-control, and logging semantics

* fix: npm installing

* (SP: 1) [Admin] Align products list in use checks with DB column names (order_items/inventory_moves)

* fix:Update leaderboard: fixed background

* fix: remove email from CurrentUser type to prevent PII exposure

* refactor: align leaderboard UI with brand style (fixed bg, css vars, podium glow)

* (SP: 1) [Frontend] About Us Page. Fixed game, topics, mobile layout

- Fixed mobile tabs in FeaturesSection (icon-only on mobile)
- Fixed game bugs: collision detection, animation, scoring system
- Added multiple obstacle types with level progression
- Improved game sizing for mobile while preserving desktop
- Updated TopicsSection with local SVG icons and hover borders
- Made DynamicGridBackground static grid opt-in via showStaticGrid prop
- Limited SponsorsWall to display max 10 sponsors
- Optimized CommunitySection button layout for mobile

* refactor: update accent color hover effects to Footer

- Update Footer links to use --accent-primary on hover
- Update ThemeToggle icons to use --accent-primary on hover
- Both components adapt colors to light/dark theme

* refactor: improve accessibility

- Add focus-visible styles for keyboard navigation accessibility

* (SP: 1) [Shop] Fix Stripe checkout success redirect (remove duplicate locale /uk/uk) (#186)

* fix:leaderboard  update leaderboard-style

* fix:leaderboard  update leaderboard-style (#187)

* fix:leaderboard update leaderboard-style on mobile

* fix: resolve CodeRabbit issues and conflicts

* fix:leaderboard update leaderboard-style on mobile (#188)

* fix:leaderboard  update leaderboard-style

* fix:leaderboard update leaderboard-style on mobile

* fix: resolve CodeRabbit issues and conflicts

---------

Co-authored-by: Viktor Svertoka <victor.svertoka@gmail.com>

* (SP: 1) [Frontend] Changing hero headline on shop main page (#190)

* (SP: 1) [Shop] Fix checkout redirect 404 by removing duplicate locale in in-app routes and Stripe return_url

* (SP: 1) [Shop] Fix locale cart page and orderid page

* (SP: 1) [Frontend] Changin hero headline on shop main page

* (SP: 1) [Frontend] Fix styles shop home page, buttons (#191)

* fix: move row border to first cell to resolve CodeRabbit issue

* fix: move row border to first cell to resolve CodeRabbit issue new

* Feature/leaderboard style update (#192)

* (SP: 7) [UI] Quiz UI polish: tabs styling, category accents, color scheme (#181, #193, #194) (#195)

* Sanity (#196)

* feat(Blog):fix for clickable link in post details, fix for author details

* feat(Blog):refactoring after removing author modal

* feat(Blog): fix unified date format

* (SP: 3) [AI] Add AI word helper with Groq integration (#200)

* (SP: 3) [AI] Add AI word helper with Groq integration

- Implement Groq API with Llama 3.1 70B model
- Add text selection detection on Q&A page
- Create floating "Explain" button
- Build draggable modal with 3-language support (uk/en/pl)
- Add localStorage caching for instant repeated lookups
- Implement guest CTA (login/signup)
- Add rate limiting (10 requests/min)
- Auth-gated feature (registered users only)

Components:
- SelectableText: Detects text selection
- FloatingExplainButton: Appears on selection
- AIWordHelper: Main modal with explanations

* (SP: 1) i18n: fix Polish locale and set EN as default

* Sanity (#202)

* feat(Blog):fix for clickable link in post details, fix for author details

* feat(Blog):refactoring after removing author modal

* feat(Blog): fix unified date format

* feat(Blog): Fix for  click-outside-to-close search, recommended posts are limited to 3

* feat(Blog): selectedAuthorData fixed

* feat(Blog): Added description for /blog/[slug] metadata, Added Schema.org JSON‑LD for Article (BlogPosting) and BreadcrumbList , Added <time datetime> tags where blog dates renders

* Sanity (#203)

* feat(Blog):fix for clickable link in post details, fix for author details

* feat(Blog):refactoring after removing author modal

* feat(Blog): fix unified date format

* feat(Blog): Fix for  click-outside-to-close search, recommended posts are limited to 3

* feat(Blog): selectedAuthorData fixed

* feat(Blog): Added description for /blog/[slug] metadata, Added Schema.org JSON‑LD for Article (BlogPosting) and BreadcrumbList , Added <time datetime> tags where blog dates renders

* feat(Blog): fix hover social links, fixed duplication not found search

* (SP: 3) [Frontend] Refactor Header UI and navigation states (#201)

* (SP: 3) [Frontend] Refactor Header UI and navigation states

- Add icon to the language switcher

- Add GitHub icon with stars indicator (frontend only)

- Update logo styles

- Improve touch interaction styles

- Verify correct placement and alignment of all header components

- Make mobile header modal full-screen

- Disable background scroll when mobile menu is open

- Highlight active navigation item

- Update navigation styles:

- Highlight Shop link when user is on Home pages
- Highlight Home link when user is on Shop pages
- Style changes only, no routing or logic changes

* fix CodeRabbit

* update HeaderButton styles

* fix: add accessibility for HeaderButton

* (SP: 3) [Testing] Vitest config + unit + integration tests for quiz module (#204)

* feat(quiz-ui): quiz UI polish - tabs, category accents, color scheme (issues #181, #193, #194)

- Refactor QaTabButton to shared CategoryTabButton component
- Add category accent colors to QuizCard, buttons, progress indicators
- Standardize colors with CSS variables, traffic light timer
- Add DynamicGridBackground to quizzes list page
- Border-only answer feedback, semi-transparent progress styles

* docs: update .gitignore

* fix(quiz): align disqualification threshold with warning banner

Changed violationsCount > 3 to >= 3 in QuizResult points block
to match the warning banner threshold at line 124.

* feat(quiz-testing): add quiz unit tests

- Configure Vitest for quiz module
- Add test factories and setup utilities
- Add quiz-crypto tests (13 tests)
- Add quiz-session tests (12 tests)

* test(quiz): add integration tests for verify-answer API and useAntiCheat hook (#199)

- verify-answer.test.ts: 8 tests for API endpoint
  - Correct/wrong answer verification
  - Validation errors (missing fields, tampered data)
  - Security: rejects modified encrypted answers

- quiz-anticheat.test.ts: 10 tests for useAntiCheat hook
  - Detects copy, paste, context-menu, tab-switch events
  - Respects isActive flag
  - Reset and cleanup functionality

Total quiz tests: 52 (9 setup + 25 unit + 18 integration)

* test(quiz): expand test coverage to 90%+ with hooks, API routes, and UI flow

Add 28 new tests covering:
- useQuizSession hook (6 tests)
- useQuizGuards hook (8 tests)
- guest-quiz storage (5 tests)
- guest-result API route (5 tests)
- quiz-slug API route (3 tests)
- QuizContainer UI flow (1 test)

Coverage: 35% -> 90.94% (quiz scope)
Tests: 52 -> 80

* chore: remove coverage-quiz from git, add to .gitignore

* chore: add coverage-quiz to .gitignore, fix quiz guards test

* fix(leaderboard): improve table mobile

* fix(leaderboard): correct malformed shadow class syntax for avatar glow

* Feature/leaderboard style update (#206)

* fix:leaderboard  update leaderboard-style

* fix:leaderboard update leaderboard-style on mobile

* fix: resolve CodeRabbit issues and conflicts

* fix: move row border to first cell to resolve CodeRabbit issue

* fix: move row border to first cell to resolve CodeRabbit issue new

* fix(leaderboard): improve table mobile

* fix(leaderboard): correct malformed shadow class syntax for avatar glow

* test(q&a): add comprehensive qa tests and coverage setup (#208)

* test(q&a): add comprehensive qa tests and coverage setup

* test(q&a): align mocks and reset in qa tests

* (SP: 1) [Frontend] Remove Contacts References (#211)

* test(q&a): add comprehensive qa tests and coverage setup

* test(q&a): align mocks and reset in qa tests

* chore(nav): remove contacts page references

* Sanity (#209)

* feat(Blog):fix for clickable link in post details, fix for author details

* feat(Blog):refactoring after removing author modal

* feat(Blog): fix unified date format

* feat(Blog): Fix for  click-outside-to-close search, recommended posts are limited to 3

* feat(Blog): selectedAuthorData fixed

* feat(Blog): Added description for /blog/[slug] metadata, Added Schema.org JSON‑LD for Article (BlogPosting) and BreadcrumbList , Added <time datetime> tags where blog dates renders

* feat(Blog): fix hover social links, fixed duplication not found search

* feat(Blog): Added: breadcrumbs to the post details page and updated the BreadcrumbList, logo to the cocial links in User info, Fixed: main container alignment, category navigation in breadcrumbs

* feat(Blog): Added: breadcrumbs to the post details page and updated the BreadcrumbList, logo to the cocial links in User info, Fixed: main container alignment, category navigation in breadcrumbs

* feat(Blog): Added scroll on the main blog page on filtering by author, fied breadcrumbs category translaion, added category to the recommended cards, fixed search for localisations

* feat(Blog): Changed image size on the post details page

* chore(release): update changelog for v0.5.0

* chore(release): v0.5.0

* [Refactor] Code Quality Improvements: Accessibility, Mobile Support, … (#213)

* fix(leaderboard): adjust podium heights for better visibility on desktop

* Feature/leaderboard style update (#214)

* fix(leaderboard): fix layout centering

* feat(Blog) (#216)

* feat(Blog) (#218)

* feat(Blog):fix for clickable link in post details, fix for author details

* feat(Blog):refactoring after removing author modal

* feat(Blog): fix unified date format

* feat(Blog): Fix for  click-outside-to-close search, recommended posts are limited to 3

* feat(Blog): selectedAuthorData fixed

* feat(Blog): Added description for /blog/[slug] metadata, Added Schema.org JSON‑LD for Article (BlogPosting) and BreadcrumbList , Added <time datetime> tags where blog dates renders

* feat(Blog): fix hover social links, fixed duplication not found search

* feat(Blog): Added: breadcrumbs to the post details page and updated the BreadcrumbList, logo to the cocial links in User info, Fixed: main container alignment, category navigation in breadcrumbs

* feat(Blog): Added: breadcrumbs to the post details page and updated the BreadcrumbList, logo to the cocial links in User info, Fixed: main container alignment, category navigation in breadcrumbs

* feat(Blog): Added scroll on the main blog page on filtering by author, fied breadcrumbs category translaion, added category to the recommended cards, fixed search for localisations

* feat(Blog): Changed image size on the post details page

* feat(Blog): added tests

* feat(Blog): fix for big post on the post page, added tests

* feat(Blog): resolving comments

* feat(Blog): fixed hover for social links icins - dark theme

* (SP: 1) feat(i18n): translate 404 error page (#217)

- Add 404 translations (uk/en/pl)
- Implement [Global/Local/Combined] strategy
- Add helpful navigation links

* (SP: 2) [Frontend] Refactor Home HeroSection and Footer stylestor/home (#221)

* (SP:1) fix: 404 page layout (#219)

- 404 translations (uk/en/pl)
- Implement Global strategy

* feat(Blog) (#222)

* feat(Blog):fix for clickable link in post details, fix for author details

* feat(Blog):refactoring after removing author modal

* feat(Blog): fix unified date format

* feat(Blog): Fix for  click-outside-to-close search, recommended posts are limited to 3

* feat(Blog): selectedAuthorData fixed

* feat(Blog): Added description for /blog/[slug] metadata, Added Schema.org JSON‑LD for Article (BlogPosting) and BreadcrumbList , Added <time datetime> tags where blog dates renders

* feat(Blog): fix hover social links, fixed duplication not found search

* feat(Blog): Added: breadcrumbs to the post details page and updated the BreadcrumbList, logo to the cocial links in User info, Fixed: main container alignment, category navigation in breadcrumbs

* feat(Blog): Added: breadcrumbs to the post details page and updated the BreadcrumbList, logo to the cocial links in User info, Fixed: main container alignment, category navigation in breadcrumbs

* feat(Blog): Added scroll on the main blog page on filtering by author, fied breadcrumbs category translaion, added category to the recommended cards, fixed search for localisations

* feat(Blog): Changed image size on the post details page

* feat(Blog): added tests

* feat(Blog): fix for big post on the post page, added tests

* feat(Blog): resolving comments

* feat(Blog): fixed hover for social links icins - dark theme

* feat(Blog): bringing the style on the blog page to a single site style

* feat(blog): aligning syles

* feat(blog): resolving comment from CodeRabbit

* feat(blog):fix comment for deployment

* Update AI model from 'llama-3.3-70b-versatile' to 'llama3-70b-8192' (#223)

* (SP 2) [Frontend] Update Features section content and improve mobile UX (#224)

* (SP 2) [Frontend] Update Features section content and improve mobile UX

- Features Section: Refined feature content and visuals.
- Mobile UX: Improved responsive layout and scaling for feature cards and interactive elements.
- Visual Enhancements: Added dynamic particle background effects to the Pricing section.

* fix(review): address accessibility, security, and performance feedback

* fix(review): resolve accessibility and hydration issues

* fix(perf): implement frame-rate independent animations

* fix(review): address accessibility, security, and performance feedback

* fix(review): enable SSR for features section and support HiDPI canvas

* fix(review): correct HiDPI logic for particle canvas measurements

* (SP:3) feat(i18n): add UA and PL translations for shop/admin pages

Add comprehensive i18n support for shop and admin sections in 3 languages (en, uk,
  pl).

  Translation coverage:
  - Shop pages: main page, products, cart, checkout, orders
  - Admin pages: dashboard, products management, orders management
  - Navigation: header, mobile menu, category links
  - Product components: cards, filters, sort, badges (NEW/SALE)
  - Category names: Apparel, Lifestyle, Collectibles
  - All UI buttons, labels, and actions

  Key changes:
  - Added ~250+ translation keys to messages/en.json, messages/uk.json,
  messages/pl.json
  - Updated 20+ components to use useTranslations() and getTranslations()
  - Implemented color translation in cart and product detail pages
  - Translated hero message
  - Added badge translations

* fix(i18n): correct translation keys and localization in shop pages

  - Replace confusing error.order with success.orderLabel in checkout success page
  heading
  - Localize boolean stockRestored display (yes/no instead of true/false) in order
  details
  - Fix active state detection for shop category links in mobile menu using search
  params
  - Add missing translation keys (orderLabel, yes, no) to all locales (en, uk, pl)

* fix(netlify): resolve AI API crash and 404 locale/theme issues

AI fixes:
  - Extract getClientIp to separate file (avoid db import crash)
  - Add missing zod dependency to package.json

  404 page fixes:
  - Use NEXT_LOCALE cookie for locale detection on Netlify
  - Add theme detection script in root layout
  - Update styling with hero background and gradient text

* Update frontend/app/not-found.tsx

Co-authored-by: coderabbitai[bot] <136622811+coderabbitai[bot]@users.noreply.github.com>

* (SP:3) feat(i18n): translate about page and auth form validation messages

  - Add about page translations (EN, UK, PL)
  - Add auth.fields.validation translations for form errors

* fix(api): resolve Netlify 503 errors and harden AI explain endpoint

 - Use dynamic import for groq-sdk (Netlify compatibility)                                                    - Bypass rate limiting for unknown IPs (serverless safety)
  - Safe JSON parsing with request.text() + empty body check
  - Fix ReferenceError: remove undefined errorMessage variable
  - Remove sensitive debug info from client responses
  - Add i18n keys: pricing.heading, sponsors.ctaAriaLabel

* feat(api): add GET health check endpoint for ai-explain

* chore(release): v0.5.1

---------

Co-authored-by: liudmylasovetovs <milkaegik@gmail.com>
Co-authored-by: Tetiana Zorii <131365289+TiZorii@users.noreply.github.com>
Co-authored-by: Anna <komrakova.anna@gmail.com>
Co-authored-by: AlinaRyabova <alinavr7@gmail.com>
Co-authored-by: Yevhenii Datsenko <yevheniydatsenko@gmail.com>
Co-authored-by: YNazymko12 <yulychka12@gmail.com>
Co-authored-by: liudmylasovetovs <127711697+liudmylasovetovs@users.noreply.github.com>
Co-authored-by: AlinaRyabova <115992255+AlinaRyabova@users.noreply.github.com>
Co-authored-by: Lesia Soloviova <106915140+LesiaUKR@users.noreply.github.com>
Co-authored-by: Yuliia Nazymko <122815071+YNazymko12@users.noreply.github.com>
Co-authored-by: Yevhenii Datsenko <134847096+yevheniidatsenko@users.noreply.github.com>
Co-authored-by: tetiana zorii <tanyusha.zoriy@gmail.com>
Co-authored-by: coderabbitai[bot] <136622811+coderabbitai[bot]@users.noreply.github.com>
@ViktorSvertoka ViktorSvertoka mentioned this pull request Jan 31, 2026
20 tasks
ViktorSvertoka added a commit that referenced this pull request Jan 31, 2026
* (SP: 1) [Security] Enforce origin posture for shop APIs (admin/checkout same-origin; internal/webhooks non-browser) + docs

* (SP: 1) [DB] Align stripe_events.order_id FK CASCADE across schema and migrations

* feat(i18n): localize quiz anti-cheat, header and blog filters (#175)

* feat(Blog): Adding last published post to the blog and category page, recommended posts, Changing styles to one unified format, Bug fixes

* Update leaderboard-style

* Update leaderboard-style

* teat(Blog): fix of hover on author, fix of the line

* (SP: 3) [Observability] Extend structured logging + correlation IDs across all shop routes; purge console.*; enforce explicit error codes

* (SP: 1) [Admin][Security] Add safe product delete (PRODUCT_IN_USE) + mobile cards UI; tighten env/docs, locale normalization, cache-control, and logging semantics

* fix: npm installing

* (SP: 1) [Admin] Align products list in use checks with DB column names (order_items/inventory_moves)

* fix:Update leaderboard: fixed background

* fix: remove email from CurrentUser type to prevent PII exposure

* refactor: align leaderboard UI with brand style (fixed bg, css vars, podium glow)

* (SP: 1) [Frontend] About Us Page. Fixed game, topics, mobile layout

- Fixed mobile tabs in FeaturesSection (icon-only on mobile)
- Fixed game bugs: collision detection, animation, scoring system
- Added multiple obstacle types with level progression
- Improved game sizing for mobile while preserving desktop
- Updated TopicsSection with local SVG icons and hover borders
- Made DynamicGridBackground static grid opt-in via showStaticGrid prop
- Limited SponsorsWall to display max 10 sponsors
- Optimized CommunitySection button layout for mobile

* refactor: update accent color hover effects to Footer

- Update Footer links to use --accent-primary on hover
- Update ThemeToggle icons to use --accent-primary on hover
- Both components adapt colors to light/dark theme

* refactor: improve accessibility

- Add focus-visible styles for keyboard navigation accessibility

* (SP: 1) [Shop] Fix Stripe checkout success redirect (remove duplicate locale /uk/uk) (#186)

* fix:leaderboard  update leaderboard-style

* fix:leaderboard  update leaderboard-style (#187)

* fix:leaderboard update leaderboard-style on mobile

* fix: resolve CodeRabbit issues and conflicts

* fix:leaderboard update leaderboard-style on mobile (#188)

* fix:leaderboard  update leaderboard-style

* fix:leaderboard update leaderboard-style on mobile

* fix: resolve CodeRabbit issues and conflicts

---------



* (SP: 1) [Frontend] Changing hero headline on shop main page (#190)

* (SP: 1) [Shop] Fix checkout redirect 404 by removing duplicate locale in in-app routes and Stripe return_url

* (SP: 1) [Shop] Fix locale cart page and orderid page

* (SP: 1) [Frontend] Changin hero headline on shop main page

* (SP: 1) [Frontend] Fix styles shop home page, buttons (#191)

* fix: move row border to first cell to resolve CodeRabbit issue

* fix: move row border to first cell to resolve CodeRabbit issue new

* Feature/leaderboard style update (#192)

* (SP: 7) [UI] Quiz UI polish: tabs styling, category accents, color scheme (#181, #193, #194) (#195)

* Sanity (#196)

* feat(Blog):fix for clickable link in post details, fix for author details

* feat(Blog):refactoring after removing author modal

* feat(Blog): fix unified date format

* (SP: 3) [AI] Add AI word helper with Groq integration (#200)

* (SP: 3) [AI] Add AI word helper with Groq integration

- Implement Groq API with Llama 3.1 70B model
- Add text selection detection on Q&A page
- Create floating "Explain" button
- Build draggable modal with 3-language support (uk/en/pl)
- Add localStorage caching for instant repeated lookups
- Implement guest CTA (login/signup)
- Add rate limiting (10 requests/min)
- Auth-gated feature (registered users only)

Components:
- SelectableText: Detects text selection
- FloatingExplainButton: Appears on selection
- AIWordHelper: Main modal with explanations

* (SP: 1) i18n: fix Polish locale and set EN as default

* Sanity (#202)

* feat(Blog):fix for clickable link in post details, fix for author details

* feat(Blog):refactoring after removing author modal

* feat(Blog): fix unified date format

* feat(Blog): Fix for  click-outside-to-close search, recommended posts are limited to 3

* feat(Blog): selectedAuthorData fixed

* feat(Blog): Added description for /blog/[slug] metadata, Added Schema.org JSON‑LD for Article (BlogPosting) and BreadcrumbList , Added <time datetime> tags where blog dates renders

* Sanity (#203)

* feat(Blog):fix for clickable link in post details, fix for author details

* feat(Blog):refactoring after removing author modal

* feat(Blog): fix unified date format

* feat(Blog): Fix for  click-outside-to-close search, recommended posts are limited to 3

* feat(Blog): selectedAuthorData fixed

* feat(Blog): Added description for /blog/[slug] metadata, Added Schema.org JSON‑LD for Article (BlogPosting) and BreadcrumbList , Added <time datetime> tags where blog dates renders

* feat(Blog): fix hover social links, fixed duplication not found search

* (SP: 3) [Frontend] Refactor Header UI and navigation states (#201)

* (SP: 3) [Frontend] Refactor Header UI and navigation states

- Add icon to the language switcher

- Add GitHub icon with stars indicator (frontend only)

- Update logo styles

- Improve touch interaction styles

- Verify correct placement and alignment of all header components

- Make mobile header modal full-screen

- Disable background scroll when mobile menu is open

- Highlight active navigation item

- Update navigation styles:

- Highlight Shop link when user is on Home pages
- Highlight Home link when user is on Shop pages
- Style changes only, no routing or logic changes

* fix CodeRabbit

* update HeaderButton styles

* fix: add accessibility for HeaderButton

* (SP: 3) [Testing] Vitest config + unit + integration tests for quiz module (#204)

* feat(quiz-ui): quiz UI polish - tabs, category accents, color scheme (issues #181, #193, #194)

- Refactor QaTabButton to shared CategoryTabButton component
- Add category accent colors to QuizCard, buttons, progress indicators
- Standardize colors with CSS variables, traffic light timer
- Add DynamicGridBackground to quizzes list page
- Border-only answer feedback, semi-transparent progress styles

* docs: update .gitignore

* fix(quiz): align disqualification threshold with warning banner

Changed violationsCount > 3 to >= 3 in QuizResult points block
to match the warning banner threshold at line 124.

* feat(quiz-testing): add quiz unit tests

- Configure Vitest for quiz module
- Add test factories and setup utilities
- Add quiz-crypto tests (13 tests)
- Add quiz-session tests (12 tests)

* test(quiz): add integration tests for verify-answer API and useAntiCheat hook (#199)

- verify-answer.test.ts: 8 tests for API endpoint
  - Correct/wrong answer verification
  - Validation errors (missing fields, tampered data)
  - Security: rejects modified encrypted answers

- quiz-anticheat.test.ts: 10 tests for useAntiCheat hook
  - Detects copy, paste, context-menu, tab-switch events
  - Respects isActive flag
  - Reset and cleanup functionality

Total quiz tests: 52 (9 setup + 25 unit + 18 integration)

* test(quiz): expand test coverage to 90%+ with hooks, API routes, and UI flow

Add 28 new tests covering:
- useQuizSession hook (6 tests)
- useQuizGuards hook (8 tests)
- guest-quiz storage (5 tests)
- guest-result API route (5 tests)
- quiz-slug API route (3 tests)
- QuizContainer UI flow (1 test)

Coverage: 35% -> 90.94% (quiz scope)
Tests: 52 -> 80

* chore: remove coverage-quiz from git, add to .gitignore

* chore: add coverage-quiz to .gitignore, fix quiz guards test

* fix(leaderboard): improve table mobile

* fix(leaderboard): correct malformed shadow class syntax for avatar glow

* Feature/leaderboard style update (#206)

* fix:leaderboard  update leaderboard-style

* fix:leaderboard update leaderboard-style on mobile

* fix: resolve CodeRabbit issues and conflicts

* fix: move row border to first cell to resolve CodeRabbit issue

* fix: move row border to first cell to resolve CodeRabbit issue new

* fix(leaderboard): improve table mobile

* fix(leaderboard): correct malformed shadow class syntax for avatar glow

* test(q&a): add comprehensive qa tests and coverage setup (#208)

* test(q&a): add comprehensive qa tests and coverage setup

* test(q&a): align mocks and reset in qa tests

* (SP: 1) [Frontend] Remove Contacts References (#211)

* test(q&a): add comprehensive qa tests and coverage setup

* test(q&a): align mocks and reset in qa tests

* chore(nav): remove contacts page references

* Sanity (#209)

* feat(Blog):fix for clickable link in post details, fix for author details

* feat(Blog):refactoring after removing author modal

* feat(Blog): fix unified date format

* feat(Blog): Fix for  click-outside-to-close search, recommended posts are limited to 3

* feat(Blog): selectedAuthorData fixed

* feat(Blog): Added description for /blog/[slug] metadata, Added Schema.org JSON‑LD for Article (BlogPosting) and BreadcrumbList , Added <time datetime> tags where blog dates renders

* feat(Blog): fix hover social links, fixed duplication not found search

* feat(Blog): Added: breadcrumbs to the post details page and updated the BreadcrumbList, logo to the cocial links in User info, Fixed: main container alignment, category navigation in breadcrumbs

* feat(Blog): Added: breadcrumbs to the post details page and updated the BreadcrumbList, logo to the cocial links in User info, Fixed: main container alignment, category navigation in breadcrumbs

* feat(Blog): Added scroll on the main blog page on filtering by author, fied breadcrumbs category translaion, added category to the recommended cards, fixed search for localisations

* feat(Blog): Changed image size on the post details page

* chore(release): update changelog for v0.5.0

* chore(release): v0.5.0

* [Refactor] Code Quality Improvements: Accessibility, Mobile Support, … (#213)

* fix(leaderboard): adjust podium heights for better visibility on desktop

* Feature/leaderboard style update (#214)

* fix(leaderboard): fix layout centering

* feat(Blog) (#216)

* feat(Blog) (#218)

* feat(Blog):fix for clickable link in post details, fix for author details

* feat(Blog):refactoring after removing author modal

* feat(Blog): fix unified date format

* feat(Blog): Fix for  click-outside-to-close search, recommended posts are limited to 3

* feat(Blog): selectedAuthorData fixed

* feat(Blog): Added description for /blog/[slug] metadata, Added Schema.org JSON‑LD for Article (BlogPosting) and BreadcrumbList , Added <time datetime> tags where blog dates renders

* feat(Blog): fix hover social links, fixed duplication not found search

* feat(Blog): Added: breadcrumbs to the post details page and updated the BreadcrumbList, logo to the cocial links in User info, Fixed: main container alignment, category navigation in breadcrumbs

* feat(Blog): Added: breadcrumbs to the post details page and updated the BreadcrumbList, logo to the cocial links in User info, Fixed: main container alignment, category navigation in breadcrumbs

* feat(Blog): Added scroll on the main blog page on filtering by author, fied breadcrumbs category translaion, added category to the recommended cards, fixed search for localisations

* feat(Blog): Changed image size on the post details page

* feat(Blog): added tests

* feat(Blog): fix for big post on the post page, added tests

* feat(Blog): resolving comments

* feat(Blog): fixed hover for social links icins - dark theme

* (SP: 1) feat(i18n): translate 404 error page (#217)

- Add 404 translations (uk/en/pl)
- Implement [Global/Local/Combined] strategy
- Add helpful navigation links

* (SP: 2) [Frontend] Refactor Home HeroSection and Footer stylestor/home (#221)

* (SP:1) fix: 404 page layout (#219)

- 404 translations (uk/en/pl)
- Implement Global strategy

* feat(Blog) (#222)

* feat(Blog):fix for clickable link in post details, fix for author details

* feat(Blog):refactoring after removing author modal

* feat(Blog): fix unified date format

* feat(Blog): Fix for  click-outside-to-close search, recommended posts are limited to 3

* feat(Blog): selectedAuthorData fixed

* feat(Blog): Added description for /blog/[slug] metadata, Added Schema.org JSON‑LD for Article (BlogPosting) and BreadcrumbList , Added <time datetime> tags where blog dates renders

* feat(Blog): fix hover social links, fixed duplication not found search

* feat(Blog): Added: breadcrumbs to the post details page and updated the BreadcrumbList, logo to the cocial links in User info, Fixed: main container alignment, category navigation in breadcrumbs

* feat(Blog): Added: breadcrumbs to the post details page and updated the BreadcrumbList, logo to the cocial links in User info, Fixed: main container alignment, category navigation in breadcrumbs

* feat(Blog): Added scroll on the main blog page on filtering by author, fied breadcrumbs category translaion, added category to the recommended cards, fixed search for localisations

* feat(Blog): Changed image size on the post details page

* feat(Blog): added tests

* feat(Blog): fix for big post on the post page, added tests

* feat(Blog): resolving comments

* feat(Blog): fixed hover for social links icins - dark theme

* feat(Blog): bringing the style on the blog page to a single site style

* feat(blog): aligning syles

* feat(blog): resolving comment from CodeRabbit

* feat(blog):fix comment for deployment

* Update AI model from 'llama-3.3-70b-versatile' to 'llama3-70b-8192' (#223)

* (SP 2) [Frontend] Update Features section content and improve mobile UX (#224)

* (SP 2) [Frontend] Update Features section content and improve mobile UX

- Features Section: Refined feature content and visuals.
- Mobile UX: Improved responsive layout and scaling for feature cards and interactive elements.
- Visual Enhancements: Added dynamic particle background effects to the Pricing section.

* fix(review): address accessibility, security, and performance feedback

* fix(review): resolve accessibility and hydration issues

* fix(perf): implement frame-rate independent animations

* fix(review): address accessibility, security, and performance feedback

* fix(review): enable SSR for features section and support HiDPI canvas

* fix(review): correct HiDPI logic for particle canvas measurements

* (SP:3) feat(i18n): add UA and PL translations for shop/admin pages

Add comprehensive i18n support for shop and admin sections in 3 languages (en, uk,
  pl).

  Translation coverage:
  - Shop pages: main page, products, cart, checkout, orders
  - Admin pages: dashboard, products management, orders management
  - Navigation: header, mobile menu, category links
  - Product components: cards, filters, sort, badges (NEW/SALE)
  - Category names: Apparel, Lifestyle, Collectibles
  - All UI buttons, labels, and actions

  Key changes:
  - Added ~250+ translation keys to messages/en.json, messages/uk.json,
  messages/pl.json
  - Updated 20+ components to use useTranslations() and getTranslations()
  - Implemented color translation in cart and product detail pages
  - Translated hero message
  - Added badge translations

* fix(i18n): correct translation keys and localization in shop pages

  - Replace confusing error.order with success.orderLabel in checkout success page
  heading
  - Localize boolean stockRestored display (yes/no instead of true/false) in order
  details
  - Fix active state detection for shop category links in mobile menu using search
  params
  - Add missing translation keys (orderLabel, yes, no) to all locales (en, uk, pl)

* fix(netlify): resolve AI API crash and 404 locale/theme issues

AI fixes:
  - Extract getClientIp to separate file (avoid db import crash)
  - Add missing zod dependency to package.json

  404 page fixes:
  - Use NEXT_LOCALE cookie for locale detection on Netlify
  - Add theme detection script in root layout
  - Update styling with hero background and gradient text

* Update frontend/app/not-found.tsx



* (SP:3) feat(i18n): translate about page and auth form validation messages

  - Add about page translations (EN, UK, PL)
  - Add auth.fields.validation translations for form errors

* fix(api): resolve Netlify 503 errors and harden AI explain endpoint

 - Use dynamic import for groq-sdk (Netlify compatibility)                                                    - Bypass rate limiting for unknown IPs (serverless safety)
  - Safe JSON parsing with request.text() + empty body check
  - Fix ReferenceError: remove undefined errorMessage variable
  - Remove sensitive debug info from client responses
  - Add i18n keys: pricing.heading, sponsors.ctaAriaLabel

* feat(api): add GET health check endpoint for ai-explain

* chore(release): v0.5.1

---------

Co-authored-by: liudmylasovetovs <milkaegik@gmail.com>
Co-authored-by: Tetiana Zorii <131365289+TiZorii@users.noreply.github.com>
Co-authored-by: Anna <komrakova.anna@gmail.com>
Co-authored-by: AlinaRyabova <alinavr7@gmail.com>
Co-authored-by: Yevhenii Datsenko <yevheniydatsenko@gmail.com>
Co-authored-by: YNazymko12 <yulychka12@gmail.com>
Co-authored-by: liudmylasovetovs <127711697+liudmylasovetovs@users.noreply.github.com>
Co-authored-by: AlinaRyabova <115992255+AlinaRyabova@users.noreply.github.com>
Co-authored-by: Lesia Soloviova <106915140+LesiaUKR@users.noreply.github.com>
Co-authored-by: Yuliia Nazymko <122815071+YNazymko12@users.noreply.github.com>
Co-authored-by: Yevhenii Datsenko <134847096+yevheniidatsenko@users.noreply.github.com>
Co-authored-by: tetiana zorii <tanyusha.zoriy@gmail.com>
Co-authored-by: coderabbitai[bot] <136622811+coderabbitai[bot]@users.noreply.github.com>
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2 participants