feat(FN-3509): document node mapping availability UI in dashboard guide

Documents the node mapping availability UI in the dashboard guide.

Fusion-Task-Id: FN-3509

docs/dashboard-guide.md

@@ -417,6 +417,22 @@ This keeps remote path mappings anchored to remote-authoritative data instead of
 | Offline | Red | Node is unreachable or shut down |
 | Connecting | Yellow (pulsing) | Connection attempt in progress |
 
+### Project availability and path visibility
+
+Node and project surfaces now use per-node project mappings (`nodeMappings`) instead of a single `project.nodeId` assumption.
+
+- **Node cards / counts** include only projects with an `available: true` mapping for that node.
+- **Node Details modal** lists one row per project available on the selected node and shows:
+  - project name
+  - project ID
+  - configured path for that node
+- **Project node filter** in the Projects view is built from available mappings and uses canonical node-name resolution (`Node.name` → mapping name → source node name → node ID).
+- **Project cards** show node availability as compact `Node → /path` rows:
+  - up to 3 rows inline
+  - `+N more` summary when additional mappings exist
+  - single-node projects still show the configured path clearly
+- Mappings marked `available: false` are excluded from node counts, node filter options, node detail project rows, and project-card availability summaries.
+
 ### Persistence
 
 The selected node persists across browser sessions via localStorage. If the selected remote node is unregistered, the dashboard automatically falls back to local mode.

packages/dashboard/app/api/legacy.ts

@@ -5722,10 +5722,29 @@ export function fetchProjects(): Promise<ProjectInfo[]> {
   return api<ProjectInfo[]>("/projects");
 }
 
-/** Project info with source node metadata (added by server for remote projects) */
+/** Dashboard-facing mapping contract for project availability on nodes. */
+export interface ProjectNodeAvailability {
+  nodeId: string;
+  nodeName?: string;
+  path: string;
+  available: boolean;
+}
+
+/** Project info with source node metadata (added by server for remote projects). */
 export interface ProjectInfoWithSource extends ProjectInfo {
-  /** Name of the source node (added by server for remote projects) */
+  /** Name of the source node (added by server for remote projects). */
   _sourceNodeName?: string;
+  /** Normalized per-node project mappings for dashboard UI. */
+  nodeMappings?: ProjectNodeAvailability[];
+  /** Compatibility fields accepted from in-flight server rollouts. */
+  projectNodeMappings?: ProjectNodeAvailability[];
+  pathMappings?: ProjectNodeAvailability[];
+}
+
+export function hasNodeMappingsSupport(project: ProjectInfoWithSource): boolean {
+  return Array.isArray(project.nodeMappings)
+    || Array.isArray(project.projectNodeMappings)
+    || Array.isArray(project.pathMappings);
 }
 
 /** Fetch all registered projects from all nodes (local + remote) */

packages/dashboard/app/components/ProjectCard.css

@@ -189,17 +189,17 @@
 }
 
 .project-card-action-resume:hover:not(:disabled) {
-  background: rgba(63, 185, 80, 0.1);
+  background: color-mix(in srgb, var(--color-success) 10%, transparent);
   border-color: var(--color-success);
 }
 
 .project-card-action-pause {
-  color: var(--warning, #e3b341);
+  color: var(--color-warning);
 }
 
 .project-card-action-pause:hover:not(:disabled) {
-  background: rgba(227, 179, 65, 0.1);
+  background: color-mix(in srgb, var(--color-warning) 10%, transparent);
-  border-color: var(--warning, #e3b341);
+  border-color: var(--color-warning);
 }
 
 .project-card-action-open {
@@ -207,7 +207,7 @@
 }
 
 .project-card-action-open:hover:not(:disabled) {
-  background: rgba(88, 166, 255, 0.1);
+  background: color-mix(in srgb, var(--todo) 10%, transparent);
   border-color: var(--todo);
 }
 
@@ -217,10 +217,59 @@
 }
 
 .project-card-action-remove:hover:not(:disabled) {
-  background: rgba(248, 81, 73, 0.1);
+  background: color-mix(in srgb, var(--color-error) 10%, transparent);
   border-color: var(--color-error);
 }
 
 .project-card-action-remove.is-armed {
   background: color-mix(in srgb, var(--color-error) 14%, transparent);
 }
+
+.project-card-availability {
+  display: flex;
+  flex-direction: column;
+  gap: var(--space-xs);
+}
+
+.project-card-availability__row {
+  display: grid;
+  grid-template-columns: minmax(0, auto) auto minmax(0, 1fr);
+  gap: var(--space-xs);
+  align-items: center;
+  font-size: calc(var(--space-sm) + var(--space-xs));
+  color: var(--text-muted);
+}
+
+.project-card-availability__node {
+  color: var(--text);
+  font-weight: 500;
+  overflow: hidden;
+  text-overflow: ellipsis;
+  white-space: nowrap;
+}
+
+.project-card-availability__arrow {
+  color: var(--text-dim);
+}
+
+.project-card-availability__path {
+  color: var(--text-muted);
+  overflow: hidden;
+  text-overflow: ellipsis;
+  white-space: nowrap;
+}
+
+.project-card-availability__more {
+  color: var(--text-dim);
+  font-size: calc(var(--space-sm) + var(--space-xs));
+}
+
+@media (max-width: 768px) {
+  .project-card-availability__row {
+    grid-template-columns: minmax(0, 1fr);
+  }
+
+  .project-card-availability__arrow {
+    display: none;
+  }
+}

packages/dashboard/app/components/ProjectCard.tsx

@@ -2,7 +2,7 @@ import { memo, useCallback, useState } from "react";
 import { Play, Pause, AlertCircle, Loader2, Trash2, Folder, ArrowRight } from "lucide-react";
 import "./ProjectCard.css";
 import type { RegisteredProject, ProjectHealth, ProjectStatus } from "@fusion/core";
-import type { NodeInfo } from "../api";
+import type { ProjectNodeAvailability } from "../api";
 
 export interface ProjectCardProps {
   project: RegisteredProject;
@@ -11,17 +11,15 @@ export interface ProjectCardProps {
   onPause: (project: RegisteredProject) => void;
   onResume: (project: RegisteredProject) => void;
   onRemove: (project: RegisteredProject) => void;
-  node?: NodeInfo;
+  availabilityMappings?: Array<ProjectNodeAvailability & { displayName: string }>;
-  /** Fallback node name when the node object is not available (e.g., for remote projects) */
-  nodeNameFallback?: string;
   isLoading?: boolean;
 }
 
 const STATUS_CONFIG: Record<ProjectStatus, { label: string; color: string; icon: typeof Play }> = {
-  active: { label: "Active", color: "var(--success)", icon: Play },
+  active: { label: "Active", color: "var(--color-success)", icon: Play },
-  paused: { label: "Paused", color: "var(--warning)", icon: Pause },
+  paused: { label: "Paused", color: "var(--color-warning)", icon: Pause },
   errored: { label: "Error", color: "var(--color-error)", icon: AlertCircle },
-  initializing: { label: "Initializing", color: "var(--info)", icon: Loader2 },
+  initializing: { label: "Initializing", color: "var(--color-warning)", icon: Loader2 },
 };
 
 function formatRelativeTime(timestamp: string | undefined): string {
@@ -72,21 +70,18 @@ function areProjectCardPropsEqual(previous: ProjectCardProps, next: ProjectCardP
     return false;
   }
 
-  const prevNode = previous.node;
+  const prevMappings = previous.availabilityMappings ?? [];
-  const nextNode = next.node;
+  const nextMappings = next.availabilityMappings ?? [];
-  if (!prevNode && !nextNode) {
+  if (prevMappings.length !== nextMappings.length) return false;
-    // Compare fallback names
-    if (previous.nodeNameFallback !== next.nodeNameFallback) return false;
-    return true;
-  }
-  if (!prevNode || !nextNode) return false;
 
-  return (
+  return prevMappings.every((mapping, index) => {
-    prevNode.id === nextNode.id
+    const nextMapping = nextMappings[index];
-    && prevNode.name === nextNode.name
+    return Boolean(nextMapping)
-    && prevNode.status === nextNode.status
+      && mapping.nodeId === nextMapping.nodeId
-    && prevNode.type === nextNode.type
+      && mapping.path === nextMapping.path
-  );
+      && mapping.displayName === nextMapping.displayName
+      && mapping.available === nextMapping.available;
+  });
 }
 
 function ProjectCardInner({
@@ -96,8 +91,7 @@ function ProjectCardInner({
   onPause,
   onResume,
   onRemove,
-  node,
+  availabilityMappings = [],
-  nodeNameFallback,
   isLoading = false,
 }: ProjectCardProps) {
   const [removeArmed, setRemoveArmed] = useState(false);
@@ -155,10 +149,19 @@ function ProjectCardInner({
           <h3 className="project-card-name" title={project.name}>
             {project.name}
           </h3>
-          {(node || nodeNameFallback) && (
+          {availabilityMappings.length > 0 && (
-            <span className="node-badge" title={`Assigned node: ${node?.name ?? nodeNameFallback}`}>
+            <div className="project-card-availability" aria-label="Project node availability">
-              on: {node?.name ?? nodeNameFallback}
+              {availabilityMappings.slice(0, 3).map((mapping) => (
-            </span>
+                <div key={`${mapping.nodeId}-${mapping.path}`} className="project-card-availability__row" title={`${mapping.displayName} → ${mapping.path}`}>
+                  <span className="project-card-availability__node">{mapping.displayName}</span>
+                  <span className="project-card-availability__arrow">→</span>
+                  <code className="project-card-availability__path">{truncatePath(mapping.path, 28)}</code>
+                </div>
+              ))}
+              {availabilityMappings.length > 3 && (
+                <span className="project-card-availability__more">+{availabilityMappings.length - 3} more</span>
+              )}
+            </div>
           )}
           <span className="project-card-path" title={project.path}>
             {truncatePath(project.path)}

packages/dashboard/app/components/ProjectOverview.tsx

@@ -1,9 +1,10 @@
 import { useState, useMemo, useCallback, useEffect } from "react";
 import { Plus, LayoutGrid, Filter, ArrowUpDown, Activity, CheckCircle, AlertCircle, Folder, Inbox, Server } from "lucide-react";
 import "./ProjectOverview.css";
-import type { ProjectInfo, ProjectHealth, NodeInfo, ProjectInfoWithSource } from "../api";
+import type { ProjectInfo, ProjectHealth, NodeInfo, ProjectInfoWithSource, ProjectNodeAvailability } from "../api";
 import type { ProjectStatus } from "@fusion/core";
 import { ProjectCard } from "./ProjectCard";
+import { getNodeMappingsForProject, resolveNodeDisplayName } from "../utils/nodeProjectAssignment";
 import { ProjectGridSkeleton } from "./ProjectGridSkeleton";
 import { useProjectHealth } from "../hooks/useProjectHealth";
 
@@ -27,6 +28,10 @@ interface ProjectWithHealth {
   health: ProjectHealth | null;
 }
 
+interface DisplayMapping extends ProjectNodeAvailability {
+  displayName: string;
+}
+
 /**
  * ProjectOverview - Multi-project grid view with stats and filtering
  * 
@@ -92,7 +97,7 @@ export function ProjectOverview({
 
     // Filter by node if a node filter is active
     if (activeNodeFilter !== null) {
-      filtered = filtered.filter(({ project }) => project.nodeId === activeNodeFilter);
+      filtered = filtered.filter(({ project }) => getNodeMappingsForProject(project).some((mapping) => mapping.available && mapping.nodeId === activeNodeFilter));
     }
 
     return filtered;
@@ -140,13 +145,15 @@ export function ProjectOverview({
     const erroredProjects = projects.filter((p) => p.status === "errored").length;
 
     // Count unique nodes with projects (local + remote)
-    const nodesWithProjects = new Set<string | undefined>();
+    const nodesWithProjects = new Set<string>();
-    projects.forEach((p) => {
+    projects.forEach((project) => {
-      if (p.nodeId) {
+      getNodeMappingsForProject(project).forEach((mapping) => {
-        nodesWithProjects.add(p.nodeId);
+        if (mapping.available) {
-      }
+          nodesWithProjects.add(mapping.nodeId);
+        }
+      });
     });
-    const totalNodes = nodesWithProjects.size || (totalProjects > 0 ? 1 : 0);
+    const totalNodes = nodesWithProjects.size;
 
     let totalActiveTasks = 0;
     let totalCompletedTasks = 0;
@@ -183,24 +190,25 @@ export function ProjectOverview({
 
   // Node filter options with project counts
   const nodeFilterOptions = useMemo(() => {
-    const nodeCounts = new Map<string | undefined, { name: string; count: number }>();
+    const nodeCounts = new Map<string, { name: string; count: number }>();
 
-    projects.forEach((p) => {
+    projects.forEach((project) => {
-      const nodeId = p.nodeId;
+      getNodeMappingsForProject(project)
-      const existing = nodeCounts.get(nodeId);
+        .filter((mapping) => mapping.available)
-      
+        .forEach((mapping) => {
-      if (existing) {
+          const nodeId = mapping.nodeId;
-        existing.count++;
+          const existing = nodeCounts.get(nodeId);
-      } else {
+          const resolvedName = resolveNodeDisplayName(nodeId, mapping, nodes, project);
-        // Get the node name from the nodes list or use _sourceNodeName for remote projects
+          if (existing) {
-        const localNode = nodes.find((n) => n.id === nodeId);
+            existing.count += 1;
-        const nodeName = localNode?.name ?? p._sourceNodeName ?? "Local";
+          } else {
-        nodeCounts.set(nodeId, { name: nodeName, count: 1 });
+            nodeCounts.set(nodeId, { name: resolvedName, count: 1 });
-      }
+          }
+        });
     });
 
     return Array.from(nodeCounts.entries()).map(([nodeId, { name, count }]) => ({
-      nodeId: nodeId ?? null,
+      nodeId,
       name,
       count,
     }));
@@ -404,16 +412,19 @@ export function ProjectOverview({
       {/* Project grid */}
       <div className="project-grid">
         {sortedProjects.map(({ project, health }) => {
-          const projectNode = nodes.find((node) => node.id === project.nodeId);
+          const availabilityMappings: DisplayMapping[] = getNodeMappingsForProject(project)
-          // Fallback: use server-provided _sourceNodeName for remote projects
+            .filter((mapping) => mapping.available)
-          const nodeNameFallback = !projectNode ? project._sourceNodeName : undefined;
+            .map((mapping) => ({
+              ...mapping,
+              displayName: resolveNodeDisplayName(mapping.nodeId, mapping, nodes, project),
+            }));
+
           return (
             <ProjectCard
               key={project.id}
               project={project}
               health={health}
-              node={projectNode}
+              availabilityMappings={availabilityMappings}
-              nodeNameFallback={nodeNameFallback}
               onSelect={handleSelectProject}
               onPause={onPauseProject}
               onResume={onResumeProject}

packages/dashboard/app/components/__tests__/NodeCard.test.tsx

@@ -2,7 +2,7 @@ import { describe, it, expect, vi } from "vitest";
 import { render, screen, fireEvent } from "@testing-library/react";
 import type { JSX } from "react";
 import { NodeCard } from "../NodeCard";
-import type { NodeInfo, ProjectInfo } from "../../api";
+import type { NodeInfo, ProjectInfoWithSource } from "../../api";
 import type { ComputedNodeSyncStatus } from "../../hooks/useNodeSettingsSync";
 
 vi.mock("lucide-react", () => ({
@@ -47,8 +47,8 @@ function makeNode(overrides: Partial<NodeInfo> = {}): NodeInfo {
   };
 }
 
-function makeProject(overrides: Partial<ProjectInfo> = {}): ProjectInfo {
+function makeProject(overrides: Partial<ProjectInfoWithSource> = {}): ProjectInfoWithSource {
-  return {
+  const project: ProjectInfoWithSource = {
     id: "proj-1",
     name: "Project One",
     path: "/workspace/project-one",
@@ -58,6 +58,12 @@ function makeProject(overrides: Partial<ProjectInfo> = {}): ProjectInfo {
     updatedAt: "2026-01-01T00:00:00.000Z",
     ...overrides,
   };
+
+  if (!project.nodeMappings && project.nodeId) {
+    project.nodeMappings = [{ nodeId: project.nodeId, path: project.path, available: true }];
+  }
+
+  return project;
 }
 
 function makeSyncStatus(overrides: Partial<ComputedNodeSyncStatus> = {}): ComputedNodeSyncStatus {
@@ -193,12 +199,12 @@ describe("NodeCard", () => {
     expect(onRemove).toHaveBeenCalledWith(node.id);
   });
 
-  it("local node counts include unassigned projects", () => {
+  it("local node counts only available mappings", () => {
     const localNode = makeNode({ id: "local-1", type: "local" });
     const projects = [
-      makeProject({ id: "proj-1", nodeId: "local-1" }), // explicitly assigned
+      makeProject({ id: "proj-1", nodeId: "local-1" }),
-      makeProject({ id: "proj-2", nodeId: undefined }), // unassigned - runs on local
+      makeProject({ id: "proj-2", nodeMappings: [{ nodeId: "local-1", path: "/workspace/project-two", available: false }] }),
-      makeProject({ id: "proj-3", nodeId: "remote-1" }), // assigned to remote - not counted
+      makeProject({ id: "proj-3", nodeId: "remote-1" }),
     ];
 
     render(
@@ -211,8 +217,7 @@ describe("NodeCard", () => {
       />
     );
 
-    // Local node should show 2 projects (explicitly assigned + unassigned)
+    expect(screen.getByText("1")).toBeDefined();
-    expect(screen.getByText("2")).toBeDefined();
   });
 
   it("remote node counts exclude unassigned projects", () => {

packages/dashboard/app/components/__tests__/NodesView.test.tsx

@@ -1,7 +1,7 @@
 import { describe, it, expect, vi, beforeEach } from "vitest";
 import { render, screen, fireEvent, waitFor } from "@testing-library/react";
 import { NodesView } from "../NodesView";
-import type { NodeInfo, ProjectInfo } from "../../api";
+import type { NodeInfo, ProjectInfoWithSource } from "../../api";
 import { useNodes } from "../../hooks/useNodes";
 import { useProjects } from "../../hooks/useProjects";
 import { useNodeSettingsSync } from "../../hooks/useNodeSettingsSync";
@@ -62,8 +62,8 @@ function makeNode(overrides: Partial<NodeInfo> = {}): NodeInfo {
   };
 }
 
-function makeProject(overrides: Partial<ProjectInfo> = {}): ProjectInfo {
+function makeProject(overrides: Partial<ProjectInfoWithSource> = {}): ProjectInfoWithSource {
-  return {
+  const project: ProjectInfoWithSource = {
     id: "proj-1",
     name: "Project One",
     path: "/workspace/project-one",
@@ -73,6 +73,12 @@ function makeProject(overrides: Partial<ProjectInfo> = {}): ProjectInfo {
     updatedAt: "2026-01-01T00:00:00.000Z",
     ...overrides,
   };
+
+  if (!project.nodeMappings && project.nodeId) {
+    project.nodeMappings = [{ nodeId: project.nodeId, path: project.path, available: true }];
+  }
+
+  return project;
 }
 
 function makeUseNodesResult(overrides: Partial<ReturnType<typeof useNodes>> = {}): ReturnType<typeof useNodes> {
@@ -274,11 +280,11 @@ describe("NodesView", () => {
     expect(screen.getByRole("dialog", { name: "Node details for Detail Node" })).toBeDefined();
   });
 
-  it("local node project count includes unassigned projects in detail modal", () => {
+  it("local node detail modal only counts projects with available mappings", () => {
     mockUseProjects.mockReturnValue({
       projects: [
-        makeProject({ id: "proj-1", nodeId: "node-1" }), // explicitly assigned
+        makeProject({ id: "proj-1", nodeId: "node-1" }),
-        makeProject({ id: "proj-2", nodeId: undefined }), // unassigned - runs on local
+        makeProject({ id: "proj-2", nodeMappings: [{ nodeId: "node-1", path: "/workspace/project-two", available: false }] }),
       ],
       loading: false,
       error: null,
@@ -299,8 +305,7 @@ describe("NodesView", () => {
     expect(nodeCard).toBeInTheDocument();
     fireEvent.click(nodeCard!);
 
-    // Modal should show "Projects (2)" - including the unassigned project
+    expect(screen.getByText("Projects (1)")).toBeDefined();
-    expect(screen.getByText("Projects (2)")).toBeDefined();
   });
 
   it("renders close button and calls onClose when clicked", () => {

packages/dashboard/app/components/__tests__/ProjectCard.test.tsx

@@ -2,7 +2,6 @@ import { describe, it, expect, vi } from "vitest";
 import { render, screen, fireEvent } from "@testing-library/react";
 import { ProjectCard } from "../ProjectCard";
 import type { RegisteredProject, ProjectHealth } from "@fusion/core";
-import type { NodeInfo } from "../../api";
 
 // Mock lucide-react to avoid SVG rendering issues in test env
 vi.mock("lucide-react", () => ({
@@ -42,19 +41,6 @@ function makeHealth(overrides: Partial<ProjectHealth> = {}): ProjectHealth {
   };
 }
 
-function makeNode(overrides: Partial<NodeInfo> = {}): NodeInfo {
-  return {
-    id: "node_001",
-    name: "Build Node",
-    type: "local",
-    status: "online",
-    maxConcurrent: 2,
-    createdAt: "2026-01-01T00:00:00.000Z",
-    updatedAt: "2026-01-01T00:00:00.000Z",
-    ...overrides,
-  };
-}
-
 const noop = () => {};
 
 describe("ProjectCard", () => {
@@ -74,12 +60,12 @@ describe("ProjectCard", () => {
     expect(screen.getByText("/path/to/project")).toBeDefined();
   });
 
-  it("renders assigned node badge when node is provided", () => {
+  it("renders node availability rows with path details", () => {
     render(
       <ProjectCard
         project={makeProject()}
         health={makeHealth()}
-        node={makeNode({ name: "Remote Worker" })}
+        availabilityMappings={[{ nodeId: "node-1", displayName: "Remote Worker", path: "/srv/work", available: true }]}
         onSelect={noop}
         onPause={noop}
         onResume={noop}
@@ -87,7 +73,29 @@ describe("ProjectCard", () => {
       />
     );
 
-    expect(screen.getByText("on: Remote Worker")).toBeDefined();
+    expect(screen.getByText("Remote Worker")).toBeDefined();
+    expect(screen.getByText("/srv/work")).toBeDefined();
+  });
+
+  it("shows overflow indicator when more than three mappings exist", () => {
+    render(
+      <ProjectCard
+        project={makeProject()}
+        health={makeHealth()}
+        availabilityMappings={[
+          { nodeId: "node-1", displayName: "Node One", path: "/one", available: true },
+          { nodeId: "node-2", displayName: "Node Two", path: "/two", available: true },
+          { nodeId: "node-3", displayName: "Node Three", path: "/three", available: true },
+          { nodeId: "node-4", displayName: "Node Four", path: "/four", available: true },
+        ]}
+        onSelect={noop}
+        onPause={noop}
+        onResume={noop}
+        onRemove={noop}
+      />
+    );
+
+    expect(screen.getByText("+1 more")).toBeDefined();
   });
 
   it("truncates long paths", () => {

packages/dashboard/app/components/__tests__/ProjectOverview.test.tsx

@@ -7,6 +7,7 @@ import { useProjectHealth } from "../../hooks/useProjectHealth";
 // Extended type with source node info for cross-node tests
 interface ProjectInfoWithSource extends ProjectInfo {
   _sourceNodeName?: string;
+  nodeMappings?: Array<{ nodeId: string; path: string; available: boolean; nodeName?: string }>;
 }
 
 // Default mock implementation
@@ -59,22 +60,21 @@ vi.mock("../ProjectCard", () => ({
   ProjectCard: ({ 
     project, 
     onSelect,
-    node,
+    availabilityMappings,
-    nodeNameFallback,
   }: {
     project: ProjectInfo;
     onSelect: (p: ProjectInfo) => void;
-    node?: { id: string; name: string };
+    availabilityMappings?: Array<{ displayName: string; path: string }>;
-    nodeNameFallback?: string;
   }) => (
     <div
       data-testid={`project-card-${project.id}`}
-      data-node={node?.name ?? nodeNameFallback ?? "none"}
+      data-node={(availabilityMappings ?? []).map((mapping) => mapping.displayName).join(",") || "none"}
       onClick={() => onSelect(project)}
     >
       {project.name}
-      {node && <span className="node-badge">{node.name}</span>}
+      {(availabilityMappings ?? []).map((mapping) => (
-      {nodeNameFallback && !node && <span className="node-badge">{nodeNameFallback}</span>}
+        <span key={`${mapping.displayName}-${mapping.path}`} className="node-badge">{mapping.displayName}</span>
+      ))}
     </div>
   ),
 }));
@@ -85,7 +85,7 @@ vi.mock("../ProjectGridSkeleton", () => ({
 }));
 
 function makeProject(overrides: Partial<ProjectInfoWithSource> = {}): ProjectInfoWithSource {
-  return {
+  const project: ProjectInfoWithSource = {
     id: "proj_abc123",
     name: "Test Project",
     path: "/home/user/projects/test",
@@ -96,6 +96,12 @@ function makeProject(overrides: Partial<ProjectInfoWithSource> = {}): ProjectInf
     lastActivityAt: new Date().toISOString(),
     ...overrides,
   };
+
+  if (!project.nodeMappings && project.nodeId) {
+    project.nodeMappings = [{ nodeId: project.nodeId, path: project.path, available: true }];
+  }
+
+  return project;
 }
 
 const noop = () => {};

packages/dashboard/app/hooks/__tests__/useProjects.test.ts

@@ -1,446 +1,122 @@
 import { describe, it, expect, vi, beforeEach, afterEach } from "vitest";
-import {
+import { renderHook, act } from "@testing-library/react";
-  fetchProjects,
+import { useProjects } from "../useProjects";
-  registerProject,
+import * as api from "../../api";
-  unregisterProject,
+import type { ProjectInfoWithSource } from "../../api";
-  fetchProject,
-  updateProject,
-  detectProjects,
-  fetchProjectHealth,
-  fetchActivityFeed,
-  pauseProject,
-  resumeProject,
-  fetchFirstRunStatus,
-  fetchGlobalConcurrency,
-  fetchProjectTasks,
-  fetchProjectConfig,
-  type ProjectInfo,
-  type ProjectHealth,
-  type ActivityFeedEntry,
-  type FirstRunStatus,
-  type GlobalConcurrencyState,
-  type DetectedProject,
-} from "../../api";
 
-function mockFetchResponse(
+vi.mock("../../api", () => ({
-  ok: boolean,
+  fetchProjectsAcrossNodes: vi.fn(),
-  body: unknown,
+  registerProject: vi.fn(),
-  status = ok ? 200 : 500,
+  updateProject: vi.fn(),
-  contentType = "application/json"
+  unregisterProject: vi.fn(),
-) {
+  hasNodeMappingsSupport: vi.fn(),
-  const bodyText = JSON.stringify(body);
+}));
-  return Promise.resolve({
+
-    ok,
+const mockFetchProjectsAcrossNodes = vi.mocked(api.fetchProjectsAcrossNodes);
-    status,
+const mockRegisterProject = vi.mocked(api.registerProject);
-    statusText: ok ? "OK" : "Error",
+const mockUpdateProject = vi.mocked(api.updateProject);
-    headers: {
+const mockUnregisterProject = vi.mocked(api.unregisterProject);
-      get: (name: string) =>
+const mockHasNodeMappingsSupport = vi.mocked(api.hasNodeMappingsSupport);
-        name.toLowerCase() === "content-type" ? contentType : null,
+
-    },
+function makeProject(overrides: Partial<ProjectInfoWithSource> = {}): ProjectInfoWithSource {
-    json: () => Promise.resolve(body),
+  return {
-    text: () => Promise.resolve(bodyText),
+    id: "proj-1",
-  } as unknown as Response);
+    name: "Project One",
+    path: "/workspace/project-one",
+    status: "active",
+    isolationMode: "in-process",
+    createdAt: "2026-01-01T00:00:00.000Z",
+    updatedAt: "2026-01-01T00:00:00.000Z",
+    ...overrides,
+  };
 }
 
-describe("Project Management API", () => {
+async function flushPromises(): Promise<void> {
-  const originalFetch = globalThis.fetch;
+  await Promise.resolve();
+  await Promise.resolve();
+}
 
+describe("useProjects", () => {
   beforeEach(() => {
     vi.useFakeTimers({ shouldAdvanceTime: true });
+    mockFetchProjectsAcrossNodes.mockReset();
+    mockRegisterProject.mockReset();
+    mockUpdateProject.mockReset();
+    mockUnregisterProject.mockReset();
+    mockHasNodeMappingsSupport.mockReset();
   });
 
   afterEach(() => {
-    globalThis.fetch = originalFetch;
     vi.useRealTimers();
   });
 
-  describe("fetchProjects", () => {
+  it("normalizes mapping-enabled payloads into project.nodeMappings", async () => {
-    it("returns empty array when no projects", async () => {
+    mockHasNodeMappingsSupport.mockReturnValue(true);
-      globalThis.fetch = vi.fn().mockReturnValue(mockFetchResponse(true, []));
+    mockFetchProjectsAcrossNodes.mockResolvedValueOnce([
+      makeProject({
+        id: "proj-1",
+        nodeMappings: [{ nodeId: "node-a", path: "/mnt/a", available: true }],
+      }),
+      makeProject({
+        id: "proj-2",
+        pathMappings: [{ nodeId: "node-b", path: "/mnt/b", available: false }],
+      }),
+    ]);
 
-      const result = await fetchProjects();
+    const { result } = renderHook(() => useProjects());
 
-      expect(result).toEqual([]);
+    await act(async () => {
-      expect(globalThis.fetch).toHaveBeenCalledWith(
+      await flushPromises();
-        "/api/projects",
-        expect.any(Object)
-      );
     });
 
-    it("returns projects list when available", async () => {
+    expect(result.current.loading).toBe(false);
-      const mockProjects: ProjectInfo[] = [
+    expect(result.current.projects[0].nodeMappings).toEqual([
-        {
+      { nodeId: "node-a", path: "/mnt/a", available: true, nodeName: undefined },
-          id: "proj_123",
+    ]);
-          name: "Test Project",
+    expect(result.current.projects[1].nodeMappings).toEqual([
-          path: "/test/path",
+      { nodeId: "node-b", path: "/mnt/b", available: false, nodeName: undefined },
-          status: "active",
+    ]);
-          isolationMode: "in-process",
-          createdAt: "2026-01-01T00:00:00.000Z",
-          updatedAt: "2026-01-01T00:00:00.000Z",
-        },
-      ];
-      globalThis.fetch = vi.fn().mockReturnValue(mockFetchResponse(true, mockProjects));
-
-      const result = await fetchProjects();
-
-      expect(result).toHaveLength(1);
-      expect(result[0].id).toBe("proj_123");
-      expect(result[0].name).toBe("Test Project");
-    });
   });
 
-  describe("registerProject", () => {
+  it("synthesizes a legacy fallback mapping from nodeId + path", async () => {
-    it("registers a new project with valid input", async () => {
+    mockHasNodeMappingsSupport.mockReturnValue(false);
-      const mockProject: ProjectInfo = {
+    mockFetchProjectsAcrossNodes.mockResolvedValueOnce([
-        id: "proj_new",
+      makeProject({ id: "proj-legacy", nodeId: "node-legacy", _sourceNodeName: "Legacy Node" }),
-        name: "New Project",
+    ]);
-        path: "/absolute/path",
-        status: "active",
-        isolationMode: "in-process",
-        createdAt: "2026-01-01T00:00:00.000Z",
-        updatedAt: "2026-01-01T00:00:00.000Z",
-      };
-      globalThis.fetch = vi.fn().mockReturnValue(mockFetchResponse(true, mockProject));
 
-      const result = await registerProject({
+    const { result } = renderHook(() => useProjects());
-        name: "New Project",
-        path: "/absolute/path",
-        isolationMode: "in-process",
-      });
 
-      expect(result.id).toBe("proj_new");
+    await act(async () => {
-      expect(result.name).toBe("New Project");
+      await flushPromises();
-      expect(globalThis.fetch).toHaveBeenCalledWith(
-        "/api/projects",
-        expect.objectContaining({
-          method: "POST",
-          body: expect.any(String),
-        })
-      );
     });
+
+    expect(result.current.projects[0].nodeMappings).toEqual([
+      {
+        nodeId: "node-legacy",
+        nodeName: "Legacy Node",
+        path: "/workspace/project-one",
+        available: true,
+      },
+    ]);
   });
 
-  describe("unregisterProject", () => {
+  it("refreshes projects using the same normalization", async () => {
-    it("unregisters a project", async () => {
+    mockHasNodeMappingsSupport.mockReturnValue(false);
-      globalThis.fetch = vi.fn().mockReturnValue(mockFetchResponse(true, {}));
+    mockFetchProjectsAcrossNodes
+      .mockResolvedValueOnce([makeProject({ id: "proj-1", nodeId: "node-a" })])
+      .mockResolvedValueOnce([makeProject({ id: "proj-2", nodeId: "node-b" })]);
 
-      await unregisterProject("proj_test123");
+    const { result } = renderHook(() => useProjects());
 
-      expect(globalThis.fetch).toHaveBeenCalledWith(
+    await act(async () => {
-        "/api/projects/proj_test123",
+      await flushPromises();
-        expect.objectContaining({
-          method: "DELETE",
-        })
-      );
-    });
-  });
-
-  describe("fetchProjectHealth", () => {
-    it("returns health metrics for a project", async () => {
-      const mockHealth: ProjectHealth = {
-        projectId: "proj_test123",
-        status: "active",
-        activeTaskCount: 5,
-        inFlightAgentCount: 2,
-        totalTasksCompleted: 10,
-        totalTasksFailed: 1,
-        updatedAt: "2026-01-01T00:00:00.000Z",
-      };
-      globalThis.fetch = vi.fn().mockReturnValue(mockFetchResponse(true, mockHealth));
-
-      const result = await fetchProjectHealth("proj_test123");
-
-      expect(result.projectId).toBe("proj_test123");
-      expect(result.activeTaskCount).toBe(5);
-      expect(result.totalTasksCompleted).toBe(10);
-    });
-  });
-
-  describe("fetchActivityFeed", () => {
-    it("returns activity feed entries", async () => {
-      const mockEntries: ActivityFeedEntry[] = [
-        {
-          id: "entry_1",
-          timestamp: "2026-01-01T00:00:00.000Z",
-          type: "task:created",
-          projectId: "proj_123",
-          projectName: "Test Project",
-          taskId: "FN-001",
-          taskTitle: "Test Task",
-          details: "Task created",
-        },
-      ];
-      globalThis.fetch = vi.fn().mockReturnValue(mockFetchResponse(true, mockEntries));
-
-      const result = await fetchActivityFeed();
-
-      expect(result).toHaveLength(1);
-      expect(result[0].type).toBe("task:created");
-      expect(result[0].projectName).toBe("Test Project");
     });
 
-    it("supports limit parameter", async () => {
+    await act(async () => {
-      globalThis.fetch = vi.fn().mockReturnValue(mockFetchResponse(true, []));
+      await result.current.refresh();
-
-      await fetchActivityFeed({ limit: 10 });
-
-      expect(globalThis.fetch).toHaveBeenCalledWith(
-        expect.stringContaining("limit=10"),
-        expect.any(Object)
-      );
     });
 
-    it("supports projectId filter", async () => {
+    expect(result.current.projects[0].id).toBe("proj-2");
-      globalThis.fetch = vi.fn().mockReturnValue(mockFetchResponse(true, []));
+    expect(result.current.projects[0].nodeMappings?.[0]?.nodeId).toBe("node-b");
-
-      await fetchActivityFeed({ projectId: "proj_123" });
-
-      expect(globalThis.fetch).toHaveBeenCalledWith(
-        expect.stringContaining("projectId=proj_123"),
-        expect.any(Object)
-      );
-    });
-  });
-
-  describe("fetchFirstRunStatus", () => {
-    it("returns first run status", async () => {
-      const mockStatus: FirstRunStatus = {
-        hasProjects: false,
-        singleProjectPath: null,
-      };
-      globalThis.fetch = vi.fn().mockReturnValue(mockFetchResponse(true, mockStatus));
-
-      const result = await fetchFirstRunStatus();
-
-      expect(result.hasProjects).toBe(false);
-      expect(result.singleProjectPath).toBeNull();
-    });
-
-    it("returns single project path when only one project", async () => {
-      const mockStatus: FirstRunStatus = {
-        hasProjects: true,
-        singleProjectPath: "/projects/my-project",
-      };
-      globalThis.fetch = vi.fn().mockReturnValue(mockFetchResponse(true, mockStatus));
-
-      const result = await fetchFirstRunStatus();
-
-      expect(result.hasProjects).toBe(true);
-      expect(result.singleProjectPath).toBe("/projects/my-project");
-    });
-  });
-
-  describe("fetchGlobalConcurrency", () => {
-    it("returns global concurrency state", async () => {
-      const mockState: GlobalConcurrencyState = {
-        globalMaxConcurrent: 4,
-        currentlyActive: 2,
-        queuedCount: 0,
-        projectsActive: { "proj_123": 2 },
-      };
-      globalThis.fetch = vi.fn().mockReturnValue(mockFetchResponse(true, mockState));
-
-      const result = await fetchGlobalConcurrency();
-
-      expect(result.globalMaxConcurrent).toBe(4);
-      expect(result.currentlyActive).toBe(2);
-      expect(result.projectsActive["proj_123"]).toBe(2);
-    });
-  });
-
-  describe("pauseProject", () => {
-    it("pauses a project", async () => {
-      const mockProject: ProjectInfo = {
-        id: "proj_123",
-        name: "Test Project",
-        path: "/test/path",
-        status: "paused",
-        isolationMode: "in-process",
-        createdAt: "2026-01-01T00:00:00.000Z",
-        updatedAt: "2026-01-01T00:00:00.000Z",
-      };
-      globalThis.fetch = vi.fn().mockReturnValue(mockFetchResponse(true, mockProject));
-
-      const result = await pauseProject("proj_123");
-
-      expect(result.status).toBe("paused");
-      expect(globalThis.fetch).toHaveBeenCalledWith(
-        "/api/projects/proj_123/pause",
-        expect.objectContaining({
-          method: "POST",
-        })
-      );
-    });
-  });
-
-  describe("resumeProject", () => {
-    it("resumes a paused project", async () => {
-      const mockProject: ProjectInfo = {
-        id: "proj_123",
-        name: "Test Project",
-        path: "/test/path",
-        status: "active",
-        isolationMode: "in-process",
-        createdAt: "2026-01-01T00:00:00.000Z",
-        updatedAt: "2026-01-01T00:00:00.000Z",
-      };
-      globalThis.fetch = vi.fn().mockReturnValue(mockFetchResponse(true, mockProject));
-
-      const result = await resumeProject("proj_123");
-
-      expect(result.status).toBe("active");
-      expect(globalThis.fetch).toHaveBeenCalledWith(
-        "/api/projects/proj_123/resume",
-        expect.objectContaining({
-          method: "POST",
-        })
-      );
-    });
-  });
-
-  describe("fetchProjectTasks", () => {
-    it("fetches tasks for a specific project", async () => {
-      globalThis.fetch = vi.fn().mockReturnValue(mockFetchResponse(true, []));
-
-      await fetchProjectTasks("proj_123");
-
-      expect(globalThis.fetch).toHaveBeenCalledWith(
-        expect.stringContaining("projectId=proj_123"),
-        expect.any(Object)
-      );
-    });
-
-    it("supports pagination", async () => {
-      globalThis.fetch = vi.fn().mockReturnValue(mockFetchResponse(true, []));
-
-      await fetchProjectTasks("proj_123", 10, 20);
-
-      expect(globalThis.fetch).toHaveBeenCalledWith(
-        expect.stringContaining("limit=10"),
-        expect.any(Object)
-      );
-      expect(globalThis.fetch).toHaveBeenCalledWith(
-        expect.stringContaining("offset=20"),
-        expect.any(Object)
-      );
-    });
-  });
-
-  describe("fetchProjectConfig", () => {
-    it("fetches project config", async () => {
-      const mockConfig = { maxConcurrent: 4, rootDir: "/projects/test" };
-      globalThis.fetch = vi.fn().mockReturnValue(mockFetchResponse(true, mockConfig));
-
-      const result = await fetchProjectConfig("proj_123");
-
-      expect(result.maxConcurrent).toBe(4);
-      expect(result.rootDir).toBe("/projects/test");
-    });
-  });
-
-  describe("fetchProject (single)", () => {
-    it("fetches a specific project by ID", async () => {
-      const mockProject: ProjectInfo = {
-        id: "proj_123",
-        name: "Specific Project",
-        path: "/specific/path",
-        status: "active",
-        isolationMode: "child-process",
-        createdAt: "2026-01-01T00:00:00.000Z",
-        updatedAt: "2026-01-01T00:00:00.000Z",
-      };
-      globalThis.fetch = vi.fn().mockReturnValue(mockFetchResponse(true, mockProject));
-
-      const result = await fetchProject("proj_123");
-
-      expect(result.id).toBe("proj_123");
-      expect(result.name).toBe("Specific Project");
-      expect(globalThis.fetch).toHaveBeenCalledWith(
-        "/api/projects/proj_123",
-        expect.any(Object)
-      );
-    });
-  });
-
-  describe("updateProject", () => {
-    it("updates project with valid data", async () => {
-      const mockProject: ProjectInfo = {
-        id: "proj_123",
-        name: "Updated Name",
-        path: "/test/path",
-        status: "active",
-        isolationMode: "in-process",
-        createdAt: "2026-01-01T00:00:00.000Z",
-        updatedAt: "2026-01-01T00:00:00.000Z",
-      };
-      globalThis.fetch = vi.fn().mockReturnValue(mockFetchResponse(true, mockProject));
-
-      const result = await updateProject("proj_123", { name: "Updated Name" });
-
-      expect(result.name).toBe("Updated Name");
-      expect(globalThis.fetch).toHaveBeenCalledWith(
-        "/api/projects/proj_123",
-        expect.objectContaining({
-          method: "PATCH",
-          body: expect.any(String),
-        })
-      );
-    });
-
-    it("updates project isolationMode", async () => {
-      const mockProject: ProjectInfo = {
-        id: "proj_123",
-        name: "Test Project",
-        path: "/test/path",
-        status: "active",
-        isolationMode: "child-process",
-        createdAt: "2026-01-01T00:00:00.000Z",
-        updatedAt: "2026-01-01T00:00:00.000Z",
-      };
-      globalThis.fetch = vi.fn().mockReturnValue(mockFetchResponse(true, mockProject));
-
-      const result = await updateProject("proj_123", { isolationMode: "child-process" });
-
-      expect(result.isolationMode).toBe("child-process");
-    });
-  });
-
-  describe("detectProjects", () => {
-    it("auto-detects projects in a base path", async () => {
-      const mockDetected = {
-        projects: [
-          { path: "/home/user/project1", suggestedName: "project1", existing: false },
-          { path: "/home/user/project2", suggestedName: "project2", existing: true },
-        ],
-      };
-      globalThis.fetch = vi.fn().mockReturnValue(mockFetchResponse(true, mockDetected));
-
-      const result = await detectProjects("/home/user");
-
-      expect(result.projects).toHaveLength(2);
-      expect(result.projects[0].path).toBe("/home/user/project1");
-      expect(result.projects[0].suggestedName).toBe("project1");
-      expect(result.projects[1].existing).toBe(true);
-      expect(globalThis.fetch).toHaveBeenCalledWith(
-        "/api/projects/detect",
-        expect.objectContaining({
-          method: "POST",
-          body: JSON.stringify({ basePath: "/home/user" }),
-        })
-      );
-    });
-
-    it("uses home directory when basePath not provided", async () => {
-      globalThis.fetch = vi.fn().mockReturnValue(mockFetchResponse(true, { projects: [] }));
-
-      await detectProjects();
-
-      expect(globalThis.fetch).toHaveBeenCalledWith(
-        "/api/projects/detect",
-        expect.objectContaining({
-          body: JSON.stringify({ basePath: undefined }),
-        })
-      );
-    });
   });
 });

packages/dashboard/app/hooks/useProjects.ts

@@ -2,11 +2,13 @@ import { useState, useEffect, useCallback, useRef } from "react";
 import type { ProjectInfo } from "../api";
 import {
   fetchProjectsAcrossNodes,
+  hasNodeMappingsSupport,
   registerProject,
   unregisterProject,
   updateProject,
   type ProjectCreateInput,
   type ProjectInfoWithSource,
+  type ProjectNodeAvailability,
 } from "../api";
 
 export interface UseProjectsResult {
@@ -29,6 +31,43 @@ export interface UseProjectsResult {
 const POLL_INTERVAL_MS = 5000; // 5 seconds
 const VISIBILITY_REFRESH_DEBOUNCE_MS = 1000;
 
+function normalizeNodeMappings(project: ProjectInfoWithSource): ProjectNodeAvailability[] {
+  const mappingSource = hasNodeMappingsSupport(project)
+    ? (project.nodeMappings ?? project.projectNodeMappings ?? project.pathMappings ?? [])
+    : [];
+
+  const normalizedMappings = mappingSource
+    .filter((mapping) => Boolean(mapping?.nodeId) && Boolean(mapping?.path))
+    .map((mapping) => ({
+      nodeId: mapping.nodeId,
+      nodeName: mapping.nodeName,
+      path: mapping.path,
+      available: mapping.available !== false,
+    }));
+
+  if (normalizedMappings.length > 0) {
+    return normalizedMappings;
+  }
+
+  if (project.nodeId && project.path) {
+    return [{
+      nodeId: project.nodeId,
+      nodeName: project._sourceNodeName,
+      path: project.path,
+      available: true,
+    }];
+  }
+
+  return [];
+}
+
+function normalizeProjects(projects: ProjectInfoWithSource[]): ProjectInfoWithSource[] {
+  return projects.map((project) => ({
+    ...project,
+    nodeMappings: normalizeNodeMappings(project),
+  }));
+}
+
 /**
  * Hook for fetching and managing projects.
  * Automatically polls for updates every 5 seconds.
@@ -46,7 +85,7 @@ export function useProjects(): UseProjectsResult {
     try {
       setError(null);
       const data = await fetchProjectsAcrossNodes();
-      setProjects(data);
+      setProjects(normalizeProjects(data));
     } catch (err) {
       setError(err instanceof Error ? err.message : "Failed to fetch projects");
       // Don't clear existing projects on error - keep showing stale data
@@ -62,10 +101,11 @@ export function useProjects(): UseProjectsResult {
       const t0 = performance.now();
       try {
         const data = await fetchProjectsAcrossNodes();
+        const normalizedData = normalizeProjects(data);
         const elapsed = Math.round(performance.now() - t0);
-        console.log(`[useProjects] initial fetchProjectsAcrossNodes took ${elapsed}ms (${data.length} projects)`);
+        console.log(`[useProjects] initial fetchProjectsAcrossNodes took ${elapsed}ms (${normalizedData.length} projects)`);
         if (!cancelled) {
-          setProjects(data);
+          setProjects(normalizedData);
           setError(null);
         }
       } catch (err) {

packages/dashboard/app/utils/__tests__/nodeProjectAssignment.test.ts

@@ -1,16 +1,19 @@
 import { describe, it, expect } from "vitest";
 import {
-  isProjectRoutedToNode,
+  getAvailableNodeMappingsForNode,
-  getProjectsForNode,
+  getNodeMappingsForProject,
   getProjectCountForNode,
+  getProjectsForNode,
   getUnassignedProjectCount,
+  isProjectAvailableOnNode,
+  resolveNodeDisplayName,
 } from "../nodeProjectAssignment";
-import type { NodeInfo, ProjectInfo } from "../../api";
+import type { NodeInfo, ProjectInfoWithSource } from "../../api";
 
 function makeNode(overrides: Partial<NodeInfo> = {}): NodeInfo {
   return {
     id: "node-1",
-    name: "Test Node",
+    name: "Node One",
     type: "local",
     status: "online",
     maxConcurrent: 2,
@@ -20,7 +23,7 @@ function makeNode(overrides: Partial<NodeInfo> = {}): NodeInfo {
   };
 }
 
-function makeProject(overrides: Partial<ProjectInfo> = {}): ProjectInfo {
+function makeProject(overrides: Partial<ProjectInfoWithSource> = {}): ProjectInfoWithSource {
   return {
     id: "proj-1",
     name: "Project One",
@@ -29,155 +32,68 @@ function makeProject(overrides: Partial<ProjectInfo> = {}): ProjectInfo {
     isolationMode: "in-process",
     createdAt: "2026-01-01T00:00:00.000Z",
     updatedAt: "2026-01-01T00:00:00.000Z",
+    nodeMappings: [],
     ...overrides,
   };
 }
 
 describe("nodeProjectAssignment", () => {
-  describe("isProjectRoutedToNode", () => {
+  it("normalizes mapping entries and defaults available=true", () => {
-    describe("local node", () => {
+    const project = makeProject({
-      const localNode = makeNode({ id: "local-1", type: "local" });
+      nodeMappings: [
-
+        { nodeId: "node-1", path: "/mnt/one", available: true },
-      it("returns true for projects explicitly assigned to this local node", () => {
+        { nodeId: "node-2", path: "/mnt/two", available: false },
-        const project = makeProject({ id: "proj-1", nodeId: "local-1" });
+        { nodeId: "", path: "/bad", available: true },
-        expect(isProjectRoutedToNode(project, localNode)).toBe(true);
+      ],
-      });
-
-      it("returns true for unassigned projects (nodeId undefined)", () => {
-        const project = makeProject({ id: "proj-1", nodeId: undefined });
-        expect(isProjectRoutedToNode(project, localNode)).toBe(true);
-      });
-
-      it("returns true for unassigned projects (nodeId null)", () => {
-        const project = makeProject({ id: "proj-1", nodeId: null as unknown as string });
-        expect(isProjectRoutedToNode(project, localNode)).toBe(true);
-      });
-
-      it("returns false for projects assigned to other nodes", () => {
-        const project = makeProject({ id: "proj-1", nodeId: "other-node" });
-        expect(isProjectRoutedToNode(project, localNode)).toBe(false);
-      });
-
-      it("returns false for projects assigned to remote nodes", () => {
-        const project = makeProject({ id: "proj-1", nodeId: "remote-1" });
-        expect(isProjectRoutedToNode(project, localNode)).toBe(false);
-      });
     });
 
-    describe("remote node", () => {
+    expect(getNodeMappingsForProject(project)).toEqual([
-      const remoteNode = makeNode({ id: "remote-1", type: "remote" });
+      { nodeId: "node-1", path: "/mnt/one", available: true, nodeName: undefined },
-
+      { nodeId: "node-2", path: "/mnt/two", available: false, nodeName: undefined },
-      it("returns true for projects explicitly assigned to this remote node", () => {
+    ]);
-        const project = makeProject({ id: "proj-1", nodeId: "remote-1" });
-        expect(isProjectRoutedToNode(project, remoteNode)).toBe(true);
-      });
-
-      it("returns false for unassigned projects (nodeId undefined)", () => {
-        const project = makeProject({ id: "proj-1", nodeId: undefined });
-        expect(isProjectRoutedToNode(project, remoteNode)).toBe(false);
-      });
-
-      it("returns false for unassigned projects (nodeId null)", () => {
-        const project = makeProject({ id: "proj-1", nodeId: null as unknown as string });
-        expect(isProjectRoutedToNode(project, remoteNode)).toBe(false);
-      });
-
-      it("returns false for projects assigned to local nodes", () => {
-        const project = makeProject({ id: "proj-1", nodeId: "local-1" });
-        expect(isProjectRoutedToNode(project, remoteNode)).toBe(false);
-      });
-
-      it("returns false for projects assigned to other remote nodes", () => {
-        const project = makeProject({ id: "proj-1", nodeId: "other-remote" });
-        expect(isProjectRoutedToNode(project, remoteNode)).toBe(false);
-      });
-    });
   });
 
-  describe("getProjectsForNode", () => {
+  it("filters available mappings for a given node", () => {
-    it("returns all projects routed to a local node (including unassigned)", () => {
+    const project = makeProject({
-      const localNode = makeNode({ id: "local-1", type: "local" });
+      nodeMappings: [
-      const projects: ProjectInfo[] = [
+        { nodeId: "node-1", path: "/mnt/live", available: true },
-        makeProject({ id: "proj-1", nodeId: "local-1" }), // assigned to this local node
+        { nodeId: "node-1", path: "/mnt/down", available: false },
-        makeProject({ id: "proj-2", nodeId: undefined }), // unassigned
+      ],
-        makeProject({ id: "proj-3", nodeId: "other-local" }), // assigned to different local node
-        makeProject({ id: "proj-4", nodeId: "remote-1" }), // assigned to remote
-      ];
-
-      const result = getProjectsForNode(projects, localNode);
-      expect(result.map((p) => p.id)).toEqual(["proj-1", "proj-2"]);
     });
+    const node = makeNode({ id: "node-1" });
 
-    it("returns only explicitly assigned projects for a remote node", () => {
+    expect(getAvailableNodeMappingsForNode(project, node)).toEqual([
-      const remoteNode = makeNode({ id: "remote-1", type: "remote" });
+      { nodeId: "node-1", path: "/mnt/live", available: true, nodeName: undefined },
-      const projects: ProjectInfo[] = [
+    ]);
-        makeProject({ id: "proj-1", nodeId: "remote-1" }), // assigned to this remote node
+    expect(isProjectAvailableOnNode(project, node)).toBe(true);
-        makeProject({ id: "proj-2", nodeId: undefined }), // unassigned
-        makeProject({ id: "proj-3", nodeId: "local-1" }), // assigned to local
-        makeProject({ id: "proj-4", nodeId: "other-remote" }), // assigned to other remote
-      ];
-
-      const result = getProjectsForNode(projects, remoteNode);
-      expect(result.map((p) => p.id)).toEqual(["proj-1"]);
-    });
   });
 
-  describe("getProjectCountForNode", () => {
+  it("builds project lists and counts from available mappings only", () => {
-    it("returns correct count for local node (includes unassigned)", () => {
+    const node = makeNode({ id: "node-1" });
-      const localNode = makeNode({ id: "local-1", type: "local" });
+    const projects = [
-      const projects: ProjectInfo[] = [
+      makeProject({ id: "proj-a", nodeMappings: [{ nodeId: "node-1", path: "/a", available: true }] }),
-        makeProject({ id: "proj-1", nodeId: "local-1" }),
+      makeProject({ id: "proj-b", nodeMappings: [{ nodeId: "node-1", path: "/b", available: false }] }),
-        makeProject({ id: "proj-2", nodeId: undefined }),
+      makeProject({ id: "proj-c", nodeMappings: [{ nodeId: "node-2", path: "/c", available: true }] }),
-        makeProject({ id: "proj-3", nodeId: undefined }),
+    ];
-      ];
 
-      expect(getProjectCountForNode(projects, localNode)).toBe(3);
+    expect(getProjectsForNode(projects, node).map((project) => project.id)).toEqual(["proj-a"]);
-    });
+    expect(getProjectCountForNode(projects, node)).toBe(1);
-
-    it("returns correct count for remote node (explicit only)", () => {
-      const remoteNode = makeNode({ id: "remote-1", type: "remote" });
-      const projects: ProjectInfo[] = [
-        makeProject({ id: "proj-1", nodeId: "remote-1" }),
-        makeProject({ id: "proj-2", nodeId: "remote-1" }),
-        makeProject({ id: "proj-3", nodeId: undefined }),
-      ];
-
-      expect(getProjectCountForNode(projects, remoteNode)).toBe(2);
-    });
-
-    it("returns 0 when no projects are routed to the node", () => {
-      const remoteNode = makeNode({ id: "remote-1", type: "remote" });
-      const projects: ProjectInfo[] = [
-        makeProject({ id: "proj-1", nodeId: "local-1" }),
-        makeProject({ id: "proj-2", nodeId: undefined }),
-      ];
-
-      expect(getProjectCountForNode(projects, remoteNode)).toBe(0);
-    });
   });
 
-  describe("getUnassignedProjectCount", () => {
+  it("resolves display names in canonical order", () => {
-    it("counts projects without nodeId", () => {
+    const nodes = [makeNode({ id: "node-1", name: "Primary Node" })];
-      const projects: ProjectInfo[] = [
+    const project = makeProject({ _sourceNodeName: "Source Node" });
-        makeProject({ id: "proj-1", nodeId: undefined }),
-        makeProject({ id: "proj-2", nodeId: null as unknown as string }),
-        makeProject({ id: "proj-3", nodeId: "local-1" }),
-      ];
 
-      expect(getUnassignedProjectCount(projects)).toBe(2);
+    expect(resolveNodeDisplayName("node-1", { nodeId: "node-1", path: "/a", available: true, nodeName: "Mapping Name" }, nodes, project)).toBe("Primary Node");
-    });
+    expect(resolveNodeDisplayName("node-2", { nodeId: "node-2", path: "/b", available: true, nodeName: "Mapping Name" }, nodes, project)).toBe("Mapping Name");
+    expect(resolveNodeDisplayName("node-3", undefined, nodes, project)).toBe("Source Node");
+    expect(resolveNodeDisplayName("node-4", undefined, nodes, makeProject({ _sourceNodeName: undefined }))).toBe("node-4");
+  });
 
-    it("returns 0 when all projects are assigned", () => {
+  it("counts unassigned projects as projects without mappings", () => {
-      const projects: ProjectInfo[] = [
+    expect(getUnassignedProjectCount([
-        makeProject({ id: "proj-1", nodeId: "local-1" }),
+      makeProject({ id: "proj-a", nodeMappings: [] }),
-        makeProject({ id: "proj-2", nodeId: "remote-1" }),
+      makeProject({ id: "proj-b", nodeMappings: [{ nodeId: "node-1", path: "/b", available: true }] }),
-      ];
+    ])).toBe(1);
-
-      expect(getUnassignedProjectCount(projects)).toBe(0);
-    });
-
-    it("returns 0 for empty array", () => {
-      expect(getUnassignedProjectCount([])).toBe(0);
-    });
   });
 });

packages/dashboard/app/utils/nodeProjectAssignment.ts

@@ -1,75 +1,55 @@
-/**
+import type { NodeInfo, ProjectInfoWithSource, ProjectNodeAvailability } from "../api";
- * Node-Project Assignment Utilities
- *
- * Provides canonical counting logic for projects routed to a node.
- *
- * **Runtime Behavior:**
- * - Projects with `nodeId` pointing to a remote node → run on that remote node
- * - Projects with `nodeId` pointing to a local node → run on that local node
- * - Projects without `nodeId` (unassigned) → run on local in-process runtime
- *
- * **Counting Rules:**
- * - Local nodes: include both explicitly-assigned projects AND unassigned projects
- * - Remote nodes: include only explicitly-assigned projects
- */
 
-import type { NodeInfo, ProjectInfo } from "../api";
+function isNonEmptyString(value: unknown): value is string {
-
+  return typeof value === "string" && value.trim().length > 0;
-/**
- * Check if a project is routed to a specific node based on runtime rules.
- *
- * @param project - The project to check
- * @param node - The node to check against
- * @returns true if the project runs on this node
- */
-export function isProjectRoutedToNode(project: ProjectInfo, node: NodeInfo): boolean {
-  if (node.type === "remote") {
-    // Remote nodes: only explicit assignment counts
-    return project.nodeId === node.id;
-  }
-
-  // Local nodes: explicit assignment OR unassigned (null/undefined)
-  if (project.nodeId === node.id) {
-    return true;
-  }
-
-  // Unassigned projects run on local in-process runtime
-  if (project.nodeId === undefined || project.nodeId === null) {
-    return true;
-  }
-
-  return false;
 }
 
-/**
+export function getNodeMappingsForProject(project: ProjectInfoWithSource): ProjectNodeAvailability[] {
- * Get all projects that are routed to a specific node.
+  const mappings = project.nodeMappings ?? [];
- *
+  return mappings
- * @param projects - All projects
+    .filter((mapping) => isNonEmptyString(mapping.nodeId) && isNonEmptyString(mapping.path))
- * @param node - The node to filter by
+    .map((mapping) => ({
- * @returns Projects routed to this node
+      nodeId: mapping.nodeId,
- */
+      nodeName: mapping.nodeName,
-export function getProjectsForNode(projects: ProjectInfo[], node: NodeInfo): ProjectInfo[] {
+      path: mapping.path,
-  return projects.filter((project) => isProjectRoutedToNode(project, node));
+      available: mapping.available !== false,
+    }));
 }
 
-/**
+export function getAvailableNodeMappingsForNode(
- * Get the count of projects routed to a specific node.
+  project: ProjectInfoWithSource,
- *
+  node: NodeInfo,
- * @param projects - All projects
+): ProjectNodeAvailability[] {
- * @param node - The node to count projects for
+  return getNodeMappingsForProject(project).filter(
- * @returns Number of projects on this node
+    (mapping) => mapping.nodeId === node.id && mapping.available,
- */
+  );
-export function getProjectCountForNode(projects: ProjectInfo[], node: NodeInfo): number {
+}
+
+export function isProjectAvailableOnNode(project: ProjectInfoWithSource, node: NodeInfo): boolean {
+  return getAvailableNodeMappingsForNode(project, node).length > 0;
+}
+
+export function getProjectsForNode(projects: ProjectInfoWithSource[], node: NodeInfo): ProjectInfoWithSource[] {
+  return projects.filter((project) => isProjectAvailableOnNode(project, node));
+}
+
+export function getProjectCountForNode(projects: ProjectInfoWithSource[], node: NodeInfo): number {
   return getProjectsForNode(projects, node).length;
 }
 
-/**
+export function resolveNodeDisplayName(
- * Get the count of unassigned projects (projects without nodeId).
+  nodeId: string,
- * These projects run on the local in-process runtime.
+  mapping: ProjectNodeAvailability | undefined,
- *
+  nodes: NodeInfo[],
- * @param projects - All projects
+  project: ProjectInfoWithSource,
- * @returns Number of unassigned projects
+): string {
- */
+  const nodeMatch = nodes.find((node) => node.id === nodeId);
-export function getUnassignedProjectCount(projects: ProjectInfo[]): number {
+  if (nodeMatch?.name) return nodeMatch.name;
-  return projects.filter((project) => project.nodeId === undefined || project.nodeId === null).length;
+  if (mapping?.nodeName) return mapping.nodeName;
+  if (project._sourceNodeName) return project._sourceNodeName;
+  return nodeId;
+}
+
+export function getUnassignedProjectCount(projects: ProjectInfoWithSource[]): number {
+  return projects.filter((project) => getNodeMappingsForProject(project).length === 0).length;
 }