[EPIC] Automation — Phase 2: Branching + Remaining Node Types

[stelbailey]

Goal

Expand the automation engine with branching logic, remaining node types, and reintroduce the canvas UI with full designer review.

Scope

Backend

• ConditionalNodeExecutor, SwitchNodeExecutor
• EmailNodeExecutor, HttpRequestNodeExecutor
• SetVariableNodeExecutor, TransformNodeExecutor
• RetryNodeExecutor, TryCatchNodeExecutor

Frontend

• Reintroduce canvas view (ReactFlow / @xyflow/react) — canvas was removed in Phase 1 to reduce scope; Phase 2 brings it back alongside the form editor
• Unlock Phase 2 node types in the node palette
• Designer input required before FE work begins — design review needed for canvas UI, node settings panel, and overall UX

Dependencies

• Cuts from Phase 1 branch after Phase 1 merges
• Execution backend choice (Phase 1) informs any concurrency behavior in Phase 2 nodes

Notes

• Canvas reintroduction is a Phase 2 deliverable — do not start FE work without designer sign-off