kanban/app.md

name, lang, domain, description, tags, uses_functions, uses_types, framework, entry_point, dir_path, e2e_checks

name	lang	domain	description	tags	uses_functions	uses_types	framework	entry_point	dir_path	e2e_checks
kanban	go	tools	Kanban board con persistencia SQLite, drag-and-drop entre columnas (dnd-kit) y tracking del tiempo que cada tarjeta pasa en cada columna. Frontend Vite + React + Mantine v9 embebido en el binario Go.	service kanban web dnd-kit mantine sqlite time-tracking	random_hex_id_go_core parse_date_or_default_go_core sqlite_open_go_infra sqlite_apply_migrations_go_infra sqlite_column_exists_go_infra spa_handler_go_infra http_router_go_infra http_serve_go_infra http_middleware_chain_go_infra http_cors_middleware_go_infra http_logger_middleware_go_infra http_json_response_go_infra http_error_response_go_infra http_parse_body_go_infra http_session_cookie_middleware_go_infra http_session_token_extract_go_infra http_session_cookie_set_go_infra http_session_cookie_clear_go_infra password_hash_go_infra password_verify_go_infra session_create_go_infra session_cleanup_go_infra duration_stats_go_datascience format_duration_ts_core format_datetime_short_ts_core string_hash_palette_ts_core color_bg_ts_ui color_border_ts_ui color_swatch_ts_ui fetch_json_ts_infra claude_stream_go_core mcp_server_stdio_go_infra ws_upgrader_go_infra	DurationStats_go_datascience	net/http + vite + react + mantine + dnd-kit	backend/main.go	apps/kanban	id cmd timeout_s expect_exit build_frontend cd frontend && pnpm install --frozen-lockfile && pnpm build 180 0 id cmd timeout_s expect_exit build_backend CGO_ENABLED=1 go build -tags fts5 -o kanban . 120 0 id cmd timeout_s expect_exit migrations_apply rm -f /tmp/kanban_e2e.db && ./kanban --port 0 --db /tmp/kanban_e2e.db --migrate-only 15 0 id cmd expect_stdout_contains migrations_schema sqlite3 /tmp/kanban_e2e.db 'SELECT version FROM schema_migrations ORDER BY version;' 1 id cmd health timeout_s smoke_api ./kanban --port 8195 --db /tmp/kanban_e2e.db & http://127.0.0.1:8195/api/board 10 id cmd timeout_s expect_exit tests_go go test -tags fts5 -count=1 ./... 120 0

Arquitectura

Single-binary: backend Go con frontend Vite embebido. SQLite local con tres tablas (columns, cards, card_column_history) y endpoints REST.

./kanban --port 8095 --db kanban.db

Schema SQLite (migrations/001_init.sql)

• columns — id, name, position, created_at
• cards — id, title, description, column_id (FK), position, created_at, updated_at
• card_column_history — id, card_id (FK), column_id, entered_at, exited_at
  • Una entrada con exited_at IS NULL = posicion actual
  • Al mover una tarjeta a otra columna: cierra la entrada activa (exited_at = now) e inserta una nueva
  • El borrado de tarjeta hace CASCADE sobre el historial

API REST

Metodo	Path	Cuerpo
GET	/api/board	— (retorna {columns, cards}, cada card incluye time_in_column_ms)
POST	/api/columns	{name}
PATCH	/api/columns/{id}	{name?, position?}
DELETE	/api/columns/{id}	— (cascade a cards)
POST	/api/columns/reorder	{ids: [...]}
POST	/api/cards	{column_id, title, description?}
PATCH	/api/cards/{id}	{title?, description?}
DELETE	/api/cards/{id}	—
POST	/api/cards/{id}/move	{column_id, ordered_ids: [...]}
GET	/api/cards/{id}/history	— (timeline con duraciones por columna)

Frontend

• dnd-kit (@dnd-kit/core + @dnd-kit/sortable) para drag-and-drop entre y dentro de columnas (multi-container).
• Mantine v9 + @tabler/icons-react para UI.
• Modales con @mantine/modals (confirmacion borrado, history timeline).
• Time-in-column live: time_in_column_ms del backend + tick local cada segundo para que el badge se actualice sin reload.
• DnD con closestCorners + DragOverlay para feedback visual al arrastrar.

Build

cd frontend && pnpm install && pnpm build
cd .. && CGO_ENABLED=1 go build -tags fts5 -o kanban .
./kanban --port 8095 --db kanban.db
# Browser: http://localhost:8095

Dev (frontend con HMR contra backend)

# Terminal 1
./kanban --port 8095 --db kanban.db

# Terminal 2
cd frontend && pnpm dev
# Browser: http://localhost:5180 (vite proxy /api → 8095)

Notas

• Puerto por defecto 8095.
• DB por defecto kanban.db en cwd.
• IDs de columnas y tarjetas: 16 chars hex (8 bytes random) via random_hex_id_go_core.
• El historial conserva la cronologia exacta — incluso despues de cerrar y reabrir el server, los tiempos vivos siguen contando desde entered_at.
• El borrado de columna hace CASCADE: las tarjetas se borran y su historial tambien. Si se quiere preservar el historial al borrar, deberia archivarse en lugar de borrar.