Add sortable list view with filters to the dashboard

[bborn]

What

Adds a flat, sortable, filterable list view as an alternative to the kanban board. Press v to toggle between Board and List at any time — the same task stays focused across the switch.

This answers the question in the task ("could the board just be a list, sorted by whatever you want?") with a real table: one row per task, sortable columns, and filter chips at the top.

List view

Columns: # · Status · Title · Project · PR · Updated · Created

• Sort by any column with ←/→, reverse direction with space. The active column is highlighted with a ▲/▼ arrow. Pinned tasks always float to the top (same as the board).
• Filter chips across the top:
  • Status — [ / ] (All · Backlog · In Progress · Blocked · Done)
  • Project — { / } (All · each project)
  • Updated within — < / > (Any time · Today · 7 days · 30 days)
  • The existing / fuzzy filter (text, #id, [project]) still applies on top.
• Open a task: Enter, a mouse click, or number keys 1–9. Up/Down inside the detail view walk rows in list order.

Status colours, project colours, PR badges, running (●) and needs-input (!) indicators all carry over from the board, so the list stays scannable.

Implementation notes

• New internal/ui/list_view.go (ListView) owns its own selection, sort, and filter state but renders the same task data the board does. app.go feeds both renderers and routes navigation/selection through small mode-aware helpers.
• --debug-state-file now reports dashboard.view_mode plus the list's sort/filter state and visible rows, so the QA harness can assert against it.
• Unit tests in internal/ui/list_view_test.go cover sorting (each column + reverse), status/project filtering, pinned-float, selection preservation across refreshes, nav wrap, and responsive rendering at multiple widths.

QA

Verified by driving the real TUI against an isolated, seeded instance (12 tasks across 2 projects and every status) using the scripts/qa harness, rendered with VHS. Screenshots in the QA comment below.

• go build ./..., go vet ./internal/ui/, gofmt clean
• go test ./... passes

Closes the "sortable list view with filters" task.

🤖 Generated with Claude Code

[bborn]

QA evidence — real TUI screenshots

Driven against an isolated, seeded instance (12 tasks across 2 projects qa/webapp, every status, 2 pinned) via scripts/qa, rendered with VHS at 200×50.

Board view (for comparison) — note the new v board/list hint in the footer

List view — default sort (Updated ↓)

One row per task, pinned tasks (📌 #6, #5) floated to the top, then newest-updated first. Filter chips + key legend across the top.

Sort by Title (←/→ to pick a column, ▲/▼ shows direction)

Title ↑ is highlighted; rows are alphabetical (pinned still float).

Filter: Status = Blocked ([ / ])

Narrows to the 2 blocked tasks; the count (2) and Status: Blocked chip update.

Filter: Project = webapp ({ / })

Narrows to the 6 webapp tasks; Project: webapp chip highlighted.

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Also exercised (not all shown): space to reverse sort, < > date filter, Enter / click / 1-9 to open a task, and toggling v back and forth keeps the same task selected. go test ./... passes.