---
id: T03
parent: S02
milestone: M011
provides: []
requires: []
affects: []
key_files: ["frontend/src/components/TagList.tsx", "frontend/src/pages/Home.tsx", "frontend/src/pages/SearchResults.tsx", "frontend/src/pages/SubTopicPage.tsx", "frontend/src/pages/CreatorDetail.tsx", "frontend/src/pages/TopicsBrowse.tsx", "frontend/src/App.css"]
key_decisions: ["Added pillClass prop to TagList so Home.tsx can pass pill--tag while other pages use bare pill class"]
patterns_established: []
drill_down_paths: []
observability_surfaces: []
duration: ""
verification_result: "TypeScript compilation (tsc --noEmit) passed with zero errors. Production build (npm run build) succeeded — 51 modules transformed, built in 827ms."
completed_at: 2026-03-31T08:34:55.792Z
blocker_discovered: false
---

# T03: Created shared TagList component with max-4 overflow, applied across all 5 tag sites, and added empty subtopic Coming soon badge

> Created shared TagList component with max-4 overflow, applied across all 5 tag sites, and added empty subtopic Coming soon badge

## What Happened
---
id: T03
parent: S02
milestone: M011
key_files:
  - frontend/src/components/TagList.tsx
  - frontend/src/pages/Home.tsx
  - frontend/src/pages/SearchResults.tsx
  - frontend/src/pages/SubTopicPage.tsx
  - frontend/src/pages/CreatorDetail.tsx
  - frontend/src/pages/TopicsBrowse.tsx
  - frontend/src/App.css
key_decisions:
  - Added pillClass prop to TagList so Home.tsx can pass pill--tag while other pages use bare pill class
duration: ""
verification_result: passed
completed_at: 2026-03-31T08:34:55.792Z
blocker_discovered: false
---

# T03: Created shared TagList component with max-4 overflow, applied across all 5 tag sites, and added empty subtopic Coming soon badge

**Created shared TagList component with max-4 overflow, applied across all 5 tag sites, and added empty subtopic Coming soon badge**

## What Happened

Created TagList component with configurable max and pillClass props. Replaced all 5 inline topic_tags.map() calls across Home, SearchResults, SubTopicPage, CreatorDetail with the shared component. Added empty subtopic handling in TopicsBrowse — technique_count === 0 renders a non-clickable span with Coming soon pill instead of a Link. Added pill--overflow, pill--coming-soon, and topic-subtopic--empty CSS.

## Verification

TypeScript compilation (tsc --noEmit) passed with zero errors. Production build (npm run build) succeeded — 51 modules transformed, built in 827ms.

## Verification Evidence

| # | Command | Exit Code | Verdict | Duration |
|---|---------|-----------|---------|----------|
| 1 | `cd frontend && npx tsc --noEmit` | 0 | ✅ pass | 3600ms |
| 2 | `cd frontend && npm run build` | 0 | ✅ pass | 2900ms |


## Deviations

Added pillClass prop to TagList (not in plan) to preserve existing pill--tag class used in Home.tsx.

## Known Issues

None.

## Files Created/Modified

- `frontend/src/components/TagList.tsx`
- `frontend/src/pages/Home.tsx`
- `frontend/src/pages/SearchResults.tsx`
- `frontend/src/pages/SubTopicPage.tsx`
- `frontend/src/pages/CreatorDetail.tsx`
- `frontend/src/pages/TopicsBrowse.tsx`
- `frontend/src/App.css`


## Deviations
Added pillClass prop to TagList (not in plan) to preserve existing pill--tag class used in Home.tsx.

## Known Issues
None.
