feat(web): initialize Next.js project with Tailwind CSS and TypeScript setup

pkg/models/execution.go

@@ -0,0 +1,16 @@
+package models
+
+// Item is a single data item flowing between nodes.
+type Item = map[string]any
+
+// NodeOutput holds the outputs of a single node, keyed by output index.
+type NodeOutput = map[int][]Item
+
+// ExecutionResult is the final result of a workflow execution.
+type ExecutionResult struct {
+	ExecutionID string                    `json:"execution_id"`
+	Status      string                    `json:"status"`
+	Outputs     map[string]map[int][]Item `json:"outputs"`
+	NodeOutputs map[string]map[int][]Item `json:"node_outputs"`
+	Errors      []string                  `json:"errors"`
+}

pkg/models/workflow.go

@@ -0,0 +1,29 @@
+package models
+
+// NodeDef represents a single node in an n8n-compatible workflow.
+type NodeDef struct {
+	ID          string         `json:"id"`
+	Name        string         `json:"name"`
+	Type        string         `json:"type"`
+	TypeVersion float64        `json:"typeVersion"`
+	Parameters  map[string]any `json:"parameters"`
+	Credentials map[string]any `json:"credentials,omitempty"`
+	Settings    map[string]any `json:"settings,omitempty"`
+	Position    [2]float64     `json:"position"`
+}
+
+// ConnectionDef represents a directed edge between two nodes.
+type ConnectionDef struct {
+	SourceNode        string
+	SourceOutputIndex int
+	TargetNode        string
+	TargetInputIndex  int
+}
+
+// WorkflowDefinition is the parsed internal representation of a workflow.
+type WorkflowDefinition struct {
+	Name        string          `json:"name"`
+	Nodes       []NodeDef       `json:"nodes"`
+	Connections []ConnectionDef
+	Settings    map[string]any `json:"settings"`
+}