fn_registry/dev/issues/0112-kanban-cpp-app.md

id, title, status, type, domain, scope, priority, depends, blocks, related, created, updated, tags, flow

id	title	status	type	domain	scope	priority	depends	blocks	related	created	updated	tags	flow
0112	App kanban_cpp: clon C++ ImGui de kanban_web con backend Go propio	pendiente	app	cpp-stack kanban agents	app	alta	0110	0116	0008 0113 0117 0118	2026-05-18	2026-05-18	kanban cpp imgui agents backend-copy	0008

0112 — App kanban_cpp

Problema

kanban_web (React + Mantine) funciona bien para humanos. Falta un kanban dedicado a conducir agentes LLM: arrastrar card a Doing (agent) -> arranca workflow, sin abrir browser ni terminal.

Flow 0008 lo requiere como surface 1 user-facing.

Decision

Nueva app apps/kanban_cpp/ (C++ ImGui via fn::run_app). Backend Go copia identica de apps/kanban/backend/ con su propia operations.db. Frontend ImGui consume HTTP + SSE/WS del backend local.

NO sync con kanban_web — datos independientes a proposito. Auth/users duplicados (cada app sus propios usuarios).

Estructura

apps/kanban_cpp/
  CMakeLists.txt            # add_imgui_app + linkea http_request_cpp_core
  app.md                    # trio: description + icon.phosphor=columns-3 + icon.accent=#a855f7
  appicon.ico               # generado via generate_app_icon_py_infra
  main.cpp                  # fn::run_app + 6 panels
  data.{h,cpp}              # HTTP client wrapper (usa http_request_cpp_core)
  panel_board.{h,cpp}       # columnas + cards drag-and-drop
  panel_calendar.{h,cpp}    # vista calendar (port de CalendarView.tsx)
  panel_dashboard.{h,cpp}   # KPIs (port de Dashboard.tsx)
  panel_agent_runs.{h,cpp}  # lista runs (usa agent_runs_timeline_cpp_viz)
  panel_worktrees.{h,cpp}   # git worktree manager
  panel_dod.{h,cpp}         # DoD inspector (usa dod_evidence_panel_cpp_viz)
  backend/                  # COPIA de apps/kanban/backend
    main.go                 # port distinto: 8401 (web) -> 8403 (cpp)
    db.go, handlers.go, ... # idem
    migrations/             # mismas migrations
    operations.db           # SU PROPIA DB

Panels (6 + Board)

Mapping con apps/kanban/frontend/src/components/:

Mantine component	Panel C++	Funcion registry
KanbanColumn + KanbanCard	panel_board	inline (logica especifica)
CalendarView.tsx	panel_calendar	inline
Dashboard.tsx	panel_dashboard	kpi_card_cpp_viz + sparkline_cpp_viz
nuevo	panel_agent_runs	agent_runs_timeline_cpp_viz (0118)
nuevo	panel_worktrees	inline (calls agent_runner_api)
nuevo	panel_dod	dod_evidence_panel_cpp_viz (0117)

Criterios de aceptacion

• apps/kanban_cpp/ creado via ./fn run init_cpp_app kanban_cpp (scaffolder canonico).
• backend/ copiado de apps/kanban/backend con port distinto (8403) y migrations propias.
• app.md con trio completo: description 1 linea + icon.phosphor: columns-3 + icon.accent: "#a855f7".
• appicon.ico generado via ./fn run generate_app_icon "columns-3" "#a855f7" apps/kanban_cpp/appicon.ico.
• App registrada en cpp/CMakeLists.txt (bloque add_subdirectory).
• Build Windows cross-compile OK: cmake --build cpp/build/windows --target kanban_cpp -j.
• Deploy a /mnt/c/Users/lucas/Desktop/apps/kanban_cpp/ via ./fn run redeploy_cpp_app_windows kanban_cpp.
• --self-test arranca + verifica GL loader + SQLite local + conexion al backend :8403.
• Trio aparece en App Hub tras ./fn run refresh_app_hub.
• Backend :8403 arranca via systemd unit (tag service).
• uses_functions declarado en app.md cubre: http_request_cpp_core, kpi_card_cpp_viz, sparkline_cpp_viz, data_table_cpp_viz, dod_evidence_panel_cpp_viz (0117), agent_runs_timeline_cpp_viz (0118).
• fn doctor uses-functions kanban_cpp limpio.
• e2e_checks declarados en app.md: build, --self-test, backend health, smoke board panel.

Gotchas

• 2 services + 2 sqlite locks: nunca compartir operations.db entre kanban y kanban_cpp. Ports + DB independientes.
• Auth: backend copia trae users.go. Decision: usuarios independientes por app. Documentar en app.md.
• Mantine es modal-heavy (Modal, Drawer). En ImGui usar ImGui::OpenPopup + BeginPopupModal. NO replicar look pixel-perfect — adaptar a fn_tokens.
• BD drift cross-PC: operations.db por PC, no se sincroniza. Si el usuario quiere portabilidad de cards -> issue separado.

Out of scope

• Sync de cards entre kanban_web y kanban_cpp (otro issue, decision deferred).
• Multi-user concurrent edit en kanban_cpp (single-user por ahora).
• Tab Chat (CardChatPanel.tsx) — postergar a v2.

Plan implementacion

1. ./fn run init_cpp_app kanban_cpp (no flag --project: app suelta).
2. cp -r apps/kanban/backend apps/kanban_cpp/backend + sed port 8401 -> 8403 + clear operations.db.
3. Build cliente data.{h,cpp} con fn_http::request.
4. Implement panel_board primero (MVP). Resto en orden.
5. Trio + icon + refresh_app_hub.
6. e2e_checks + smoke + deploy Windows.