---
id: T02
parent: S02
milestone: M012
provides: []
requires: []
affects: []
key_files: ["frontend/src/components/SortDropdown.tsx", "frontend/src/hooks/useSortPreference.ts", "frontend/src/pages/SearchResults.tsx", "frontend/src/pages/SubTopicPage.tsx", "frontend/src/pages/CreatorDetail.tsx", "frontend/src/api/public-client.ts", "frontend/src/App.css"]
key_decisions: ["Shared sessionStorage key across all pages for unified sort preference", "Page-specific option lists with context-appropriate defaults"]
patterns_established: []
drill_down_paths: []
observability_surfaces: []
duration: ""
verification_result: "TypeScript compilation clean (npx tsc --noEmit), Vite build successful (npm run build). Browser verification on ub01:8096: all three pages show sort dropdown, sort changes update results (search alpha reorders alphabetically, subtopic newest reorders by date), sessionStorage.getItem('chrysopedia_sort_pref') returns persisted value after navigation."
completed_at: 2026-04-01T06:33:30.555Z
blocker_discovered: false
---

# T02: Created SortDropdown component and useSortPreference hook, integrated sort controls into SearchResults, SubTopicPage, and CreatorDetail with session-persistent preference

> Created SortDropdown component and useSortPreference hook, integrated sort controls into SearchResults, SubTopicPage, and CreatorDetail with session-persistent preference

## What Happened
---
id: T02
parent: S02
milestone: M012
key_files:
  - frontend/src/components/SortDropdown.tsx
  - frontend/src/hooks/useSortPreference.ts
  - frontend/src/pages/SearchResults.tsx
  - frontend/src/pages/SubTopicPage.tsx
  - frontend/src/pages/CreatorDetail.tsx
  - frontend/src/api/public-client.ts
  - frontend/src/App.css
key_decisions:
  - Shared sessionStorage key across all pages for unified sort preference
  - Page-specific option lists with context-appropriate defaults
duration: ""
verification_result: passed
completed_at: 2026-04-01T06:33:30.556Z
blocker_discovered: false
---

# T02: Created SortDropdown component and useSortPreference hook, integrated sort controls into SearchResults, SubTopicPage, and CreatorDetail with session-persistent preference

**Created SortDropdown component and useSortPreference hook, integrated sort controls into SearchResults, SubTopicPage, and CreatorDetail with session-persistent preference**

## What Happened

Built a reusable SortDropdown component and useSortPreference hook backed by sessionStorage. Integrated into three pages: SearchResults (relevance/newest/oldest/alpha/creator), SubTopicPage (alpha/newest/oldest/creator), and CreatorDetail (newest/oldest/alpha). Updated public-client.ts to pass sort params to searchApi and fetchSubTopicTechniques. Added dark-theme CSS with custom chevron, focus ring, and creator-techniques header flex layout. Deployed to ub01 and verified all three pages show the dropdown, changing sort reorders results, and preference persists across navigation.

## Verification

TypeScript compilation clean (npx tsc --noEmit), Vite build successful (npm run build). Browser verification on ub01:8096: all three pages show sort dropdown, sort changes update results (search alpha reorders alphabetically, subtopic newest reorders by date), sessionStorage.getItem('chrysopedia_sort_pref') returns persisted value after navigation.

## Verification Evidence

| # | Command | Exit Code | Verdict | Duration |
|---|---------|-----------|---------|----------|
| 1 | `npx tsc --noEmit` | 0 | ✅ pass | 5100ms |
| 2 | `npm run build` | 0 | ✅ pass | 3400ms |
| 3 | `browser: search sort dropdown visible and functional` | 0 | ✅ pass | 500ms |
| 4 | `browser: subtopic sort dropdown visible` | 0 | ✅ pass | 500ms |
| 5 | `browser: creator sort dropdown visible` | 0 | ✅ pass | 500ms |
| 6 | `browser: sessionStorage persists across navigation` | 0 | ✅ pass | 500ms |


## Deviations

None.

## Known Issues

None.

## Files Created/Modified

- `frontend/src/components/SortDropdown.tsx`
- `frontend/src/hooks/useSortPreference.ts`
- `frontend/src/pages/SearchResults.tsx`
- `frontend/src/pages/SubTopicPage.tsx`
- `frontend/src/pages/CreatorDetail.tsx`
- `frontend/src/api/public-client.ts`
- `frontend/src/App.css`


## Deviations
None.

## Known Issues
None.
