feat: add OPC (One Person Company) management system with Kanban board

Phase 1 MVP implementation:
- PostgreSQL database schema for tasks, agents, executions, time tracking
- Backend API: task CRUD, agent management, automatic time tracking
- Frontend: Kanban board with drag-and-drop (Parking Lot → In Progress → Done)
- Task modal for creating/editing tasks with tags, priority, assignee
- 3 core agents seeded: PM, CTO, COO
- Agent approval workflow: CxO level requires approval, others auto-execute
- Automatic time tracking: starts on in_progress, stops on done
- RBAC integration: OPC page accessible to admin/member roles

Features:
- Drag-and-drop tasks between columns
- Assign tasks to humans or AI agents
- Priority badges (low, medium, high, urgent)
- Tags and due dates
- Task history tracking
- Time entry tracking with automatic timer
- Agent execution records with approval workflow

Next steps:
- Initialize OPC database on NAS
- Implement agent executor service
- Add WebSocket for real-time updates
- Add email notifications
- Add PDF invoice generation

dashboard/backend/routers/cc_connect.py

@@ -7,10 +7,19 @@ from fastapi import APIRouter
 from config import CC_CONNECT_URL, DOCKER_HOST
 
 router = APIRouter()
-client = docker.DockerClient(base_url=DOCKER_HOST, timeout=5)
+
+_client = None
+
+def get_docker_client():
+    """Get or create Docker client (lazy initialization)."""
+    global _client
+    if _client is None:
+        _client = docker.DockerClient(base_url=DOCKER_HOST, timeout=5)
+    return _client
 
 
 def _get_cc_connect_container():
+    client = get_docker_client()
     matches = client.containers.list(all=True, filters={"name": "cc-connect"})
     return matches[0] if matches else None