Interactive artist browser TUI

[Jason-Abbott]

Add a musup browse command that opens a Bubbletea-powered interactive list of all artists (and their albums) from the local state DB.

UX

Layout

• Full-terminal list view showing artists from the .musup.db state
• Each row: artist name, album count, newest album title, newest album date
• Responsive columns (hide album title on narrow terminals)

Filtering

• / to enter filter mode (substring match on artist name, case-insensitive)
• // for deep search (also matches album names)
• Esc or Backspace to clear filter
• Filter prompt styled with accent color

Sorting

• o to open sort picker modal
• Sort modes:
  • Name (default) — alphabetical by artist name
  • Newest release — most recent local album date first
  • Album count — most albums first
• Current sort indicated in picker

Detail view

• Enter on an artist to expand/show album list inline or in a detail pane
• Albums listed with title and year
• Esc to go back to artist list

Key bindings

• j/k or arrows — navigate
• Enter — view artist detail
• / — filter
• o — sort picker
• q / Ctrl+C — quit
• ? — help overlay

Dependencies

• github.com/charmbracelet/bubbletea
• github.com/charmbracelet/bubbles
• github.com/charmbracelet/lipgloss

New packages

• internal/tui/ — Bubbletea app, models, views, key bindings, styles

Files to create/modify

File	Action
internal/tui/app.go	Create — top-level model, Init/Update/View
internal/tui/list.go	Create — artist list model, filtering, rendering
internal/tui/detail.go	Create — artist detail view (album list)
internal/tui/sort.go	Create — sort picker modal
internal/tui/keys.go	Create — key bindings
internal/tui/styles.go	Create — lipgloss styles, color palette
cmd/browse.go	Create — browse command, opens DB + launches TUI
go.mod / go.sum	Modified by go get

Data source

All data comes from state.DB:

• UniqueArtists() for the artist list
• LocalAlbums(artist) for album detail
• May need a new state.DB method: ArtistSummaries() ([]ArtistSummary, error) that returns artist name, album count, newest album, and newest album year in a single query for efficient list population

Out of scope

• MusicBrainz integration (that's the check command)
• Editing or modifying state from the TUI
• Multi-select / batch operations

👾 This issue is managed by Jig. Edits made here will be overwritten.