FE Journeys that need to be mapped out

[dimitrieh]

Parent Deliverable: FlowFuse/product#65

Map the FlowFuse platform user journey to Node-RED from three starting contexts:

1. No context — user is on the FlowFuse dashboard, no application or instance selected
2. Application context — user is inside an application, viewing instances
3. Instance context — user is inside a Node-RED instance (immersive editor)

For each, identify every user action and the corresponding backend automations needed.