refactor: remove placeholder join step

web/apps/console/src/graph/WorkflowGraph.tsx

@@ -31,8 +31,6 @@ const nodeColor = (data: WorkflowGraphNodeData): string => {
       return "#ef4444";
     case "foreach":
       return "#8b5cf6";
-    case "join":
-      return "#10b981";
     case "end":
       return "#6b7280";
     default:

web/apps/console/src/graph/graph-model.ts

@@ -7,7 +7,6 @@ export type WorkflowGraphNodeKind =
   | "condition"
   | "interrupt"
   | "foreach"
-  | "join"
   | "end"
   | "unsupported";
 
@@ -94,8 +93,6 @@ const mapNodeKind = (type: unknown): WorkflowGraphNodeKind => {
       return "interrupt";
     case "foreach":
       return "foreach";
-    case "join":
-      return "join";
     case "end":
       return "end";
     default:
@@ -119,7 +116,6 @@ const buildLabel = (
     return typeof node.kind === "string" ? node.kind : "Interrupt";
   }
   if (type === "foreach") return "For Each";
-  if (type === "join") return "Join";
   if (type === "subgraph") {
     const workflowRef = typeof node.workflow === "string" ? node.workflow : undefined;
     if (workflowRef) {

web/apps/console/src/presentation/figures/architecture-catalog.test.ts

@@ -46,7 +46,6 @@ describe("architectureCatalog", () => {
       "NodeUse",
       "Condition",
       "Foreach",
-      "Join",
       "Subgraph",
       "Interrupt",
       "End",

web/apps/console/src/presentation/figures/architecture-catalog.ts

@@ -524,7 +524,6 @@ export const architectureCatalog: FigureCatalogDefinition = defineFigureCatalog(
           "node-use": { x: 0, y: 0 },
           "condition": { x: 300, y: 0 },
           "foreach": { x: 600, y: 0 },
-          "join": { x: 900, y: 0 },
           "subgraph": { x: 150, y: 210 },
           "interrupt": { x: 450, y: 210 },
           "end": { x: 750, y: 210 },
@@ -542,7 +541,6 @@ export const architectureCatalog: FigureCatalogDefinition = defineFigureCatalog(
         },
         { id: "condition", label: "Condition", summary: "Route true or false", kind: "decision", icon: "branch", evidencePointer: "src/wf_core/models/steps.py" },
         { id: "foreach", label: "Foreach", summary: "Create item frames and barrier", kind: "loop", icon: "repeat", evidencePointer: "src/wf_core/models/steps.py" },
-        { id: "join", label: "Join", summary: "Close a branch or frame", kind: "operation", icon: "workflow", evidencePointer: "src/wf_core/models/steps.py" },
         { id: "subgraph", label: "Subgraph", summary: "Enter a prepared child workflow", kind: "boundary", icon: "layers", evidencePointer: "src/wf_core/models/steps.py" },
         { id: "interrupt", label: "Interrupt", summary: "Persist request and wait", kind: "boundary", icon: "pause", evidencePointer: "src/wf_core/models/steps.py", childFigureId: "interrupt-contract-detail" },
         { id: "end", label: "End", summary: "Project a terminal outcome", kind: "terminal", icon: "stop", evidencePointer: "src/wf_core/models/steps.py" },

web/apps/console/src/workspace/authoring/authoring-graph.ts

@@ -57,7 +57,6 @@ const stepKind = (step: JsonRecord): string => {
     "choose",
     "match",
     "foreach",
-    "join",
     "end",
   ]) {
     if (kind in step) return kind;

web/packages/rpc/src/generated/workflow-contract.ts

@@ -464,7 +464,6 @@ export interface WorkflowContractMap {
         | DraftUseStep
         | DraftForeachStep
         | DraftInterruptStep
-        | DraftJoinStep
         | DraftEndStep
         | DraftWhenStep
         | DraftChooseStep
@@ -1867,17 +1866,6 @@ export interface SchemaRef {
   type?: string | string[] | null;
   [k: string]: unknown;
 }
-/**
- * Draft step that emits the current core join node.
- *
- * This interface was referenced by `WorkflowContractMap`'s JSON-Schema
- * via the `definition` "DraftJoinStep".
- */
-export interface DraftJoinStep {
-  join?: {
-    [k: string]: unknown;
-  };
-}
 /**
  * Draft step that lowers to core `EndNode`.
  *