sprint-6: Runtime desktop client (PySide6 + WebSocket + REST)

Cliente desktop completo conectado al Runtime server por HTTP+WebSocket.

vmssailor/runtime/client/api_client.py
- RuntimeApiClient: wrapper async httpx contra /health, /project, /tags,
  /tags/{id}, /tags/{id}/history, /alarms, /logbook, /alarms/{id}/ack
- RuntimeWebSocketClient: conexion ws://host:port/ws/realtime con
  reconexion automatica + heartbeats + on_event/on_state_change callbacks

vmssailor/runtime/client/app.py
- RuntimeClientApp QApplication con tema Deep Ocean (compartido con Studio)
- run_client() entry point

vmssailor/runtime/client/main_window.py
- Topbar: logo + vessel name + status pill (connecting/connected/disconnected)
  + alarm chip + user chip
- Sidebar lista: Overview, Mimicos, Alarmas, Trends, Trim, Log Book, Conexion
- QStackedWidget central conmuta vista segun sidebar
- Reloj live + statusbar con estado WS + version
- Sprint 6 trae 3 vistas funcionales (Overview, Alarmas, Conexion); resto stubs

vmssailor/runtime/client/views/connection_view.py
- _AsyncWorker QObject corre asyncio event loop en QThread separado
- Conecta API + WS, emite signals connectionStateChanged / eventReceived / projectLoaded
- Tabla con ultimos 500 eventos crudos del WebSocket
- Conecta/desconecta sin congelar la UI

vmssailor/runtime/client/views/overview_view.py
- Grid de tiles dinamicas que se crean al recibir tag_update events
- Cada tile muestra: descripcion, tag_id, valor formateado, quality, timestamp
- Layout 4 columnas con QScrollArea

vmssailor/runtime/client/views/alarms_view.py
- Tabla de alarmas activas con priority coloreada (emergency/high/low/info)
- Boton ACK por fila emite signal acknowledged(alarm_id)
- handle_event mantiene set vivo segun state=active/cleared

runtime_client_main.py
- Entry point: uv run python runtime_client_main.py

Tests (tests/runtime/test_client.py, 5 nuevos, total 157/157):
- main window builds with 7 stack pages
- overview handles tag_update
- alarms view shows + clears on state change
- connection view initial state

Para correr el sistema completo en vivo:
    # Terminal 1 — servidor:
    uv run python runtime_server_main.py --verbose
    # Terminal 2 — cliente:
    uv run python runtime_client_main.py

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

runtime_client_main.py

@@ -1,6 +1,7 @@
-"""Entry point del cliente desktop Runtime (stub Sprint 0).
+"""Entry point del cliente desktop del Runtime (Sprint 6).
 
-Sprint 6 lo reemplaza con `vmssailor.runtime.client.app:main`.
+Uso:
+    uv run python runtime_client_main.py
 """
 
 from __future__ import annotations
@@ -9,9 +10,9 @@ import sys
 
 
 def main() -> int:
-    print("VMS-Sailor Runtime cliente — Sprint 6 trae la UI PySide6.")
-    print("En Sprint 0 solo existe el modelo de datos core.")
-    return 0
+    from vmssailor.runtime.client.app import run_client
+
+    return run_client(sys.argv)
 
 
 if __name__ == "__main__":