---
id: T01
parent: S02
milestone: M016
provides: []
requires: []
affects: []
key_files: ["frontend/src/App.css", "frontend/src/pages/AdminPipeline.tsx"]
key_decisions: ["Used text-based arrow styling rather than CSS rotate since JSX already swaps characters", "Added pipeline-specific mobile media query block at end of App.css"]
patterns_established: []
drill_down_paths: []
observability_surfaces: []
duration: ""
verification_result: "Frontend build (tsc -b && vite build) passes cleanly with exit code 0. All TypeScript types check and Vite bundles without errors."
completed_at: 2026-04-03T05:38:04.012Z
blocker_discovered: false
---

# T01: Added collapse arrow styling, stage chevrons, filter right-alignment, mobile card layout, and creator dropdown visibility fix to pipeline admin page

> Added collapse arrow styling, stage chevrons, filter right-alignment, mobile card layout, and creator dropdown visibility fix to pipeline admin page

## What Happened
---
id: T01
parent: S02
milestone: M016
key_files:
  - frontend/src/App.css
  - frontend/src/pages/AdminPipeline.tsx
key_decisions:
  - Used text-based arrow styling rather than CSS rotate since JSX already swaps characters
  - Added pipeline-specific mobile media query block at end of App.css
duration: ""
verification_result: passed
completed_at: 2026-04-03T05:38:04.013Z
blocker_discovered: false
---

# T01: Added collapse arrow styling, stage chevrons, filter right-alignment, mobile card layout, and creator dropdown visibility fix to pipeline admin page

**Added collapse arrow styling, stage chevrons, filter right-alignment, mobile card layout, and creator dropdown visibility fix to pipeline admin page**

## What Happened

Applied five independent CSS/markup fixes to the pipeline admin page: (1) added .recent-activity__arrow CSS rule with hover color transition, (2) added pipeline-specific mobile media query for card layout stacking, (3) replaced stage connector line pseudo-element with › chevron character, (4) added .creator-filter margin-left:auto for right-alignment, (5) changed creators.length > 1 to >= 1 for single-creator visibility.

## Verification

Frontend build (tsc -b && vite build) passes cleanly with exit code 0. All TypeScript types check and Vite bundles without errors.

## Verification Evidence

| # | Command | Exit Code | Verdict | Duration |
|---|---------|-----------|---------|----------|
| 1 | `cd frontend && npm run build` | 0 | ✅ pass | 3700ms |


## Deviations

Used color transition on hover instead of CSS rotate for the collapse arrow, since the JSX already swaps ▸/▾ text characters for state indication.

## Known Issues

None.

## Files Created/Modified

- `frontend/src/App.css`
- `frontend/src/pages/AdminPipeline.tsx`


## Deviations
Used color transition on hover instead of CSS rotate for the collapse arrow, since the JSX already swaps ▸/▾ text characters for state indication.

## Known Issues
None.
