---
phase: quick-18
plan: 1
subsystem: frontend/playlist-details
tags: [ui, grid-layout, playlist]
dependency_graph:
  requires: [playlist.Track, formatMilliseconds]
  provides: [multi-column-playlist-track-display]
  affects: [playlist-details]
tech_stack:
  added: []
  patterns: [css-grid-template-columns, tabular-nums, text-overflow-ellipsis]
key_files:
  modified:
    - frontend/src/components/playlist-details/playlist-details.ts
decisions: []
metrics:
  duration: 2 min
  completed: "2026-03-08T13:36:12Z"
---

# Quick Task 18: Multi-Column Metadata Display in Playlist Details — Summary

Replaced single-row `<track-info>` component rendering with a 5-column CSS grid layout (#, Title, Artist, Album, Duration) including a column header row, matching track-list's visual style.

## Changes Made

### Task 1: Replace track-info rendering with multi-column grid layout
**Commit:** `ce23177`

- Removed `<track-info>` component import (no longer used)
- Added `formatMilliseconds` import from `@utils/time` for duration formatting
- Added `.track-header` row with column labels: #, Title, Artist, Album, Duration
- Replaced `<track-info>` element with inline `<span>` grid cells showing track metadata
- Added 1-indexed playlist order number in `#` column (`trackIndex + 1`)
- Phantom tracks span the full grid width via `grid-column: 1 / -1`
- Added CSS grid styles: `grid-template-columns: 40px 1fr 1fr 1fr 80px`
- Column-specific styles: center-aligned `#`, right-aligned duration, tabular-nums, text truncation with ellipsis
- Removed stale `.track-item:last-child { border-bottom: none }` rule
- Updated `.track-item` padding from `6px 0` to `6px 8px` for grid alignment

## Deviations from Plan

None — plan executed exactly as written.

## Verification

- `cd frontend && npx tsc --noEmit` — passed (0 errors)
- Pre-commit hook `frontend-typecheck` — passed
- All existing interactions preserved (click, dblclick, contextmenu, drag events unchanged)
- Phantom track rendering still uses warning icon / path / action button layout, spanning full grid width