feat(KB-618): add multi-project support to dashboard

- Add project API methods and types (fetchProjects, registerProject, fetchProjectHealth, etc.)
- Add ProjectCard component with health metrics, status badges, and pause/resume actions
- Add server-side project management routes for multi-project orchestration
- Add ActivityFeed component with grouped entries and project badges
- Add SetupWizard component with 5-step project creation flow
- Fix TypeScript errors in server routes for listProjects and getGlobalConcurrencyState

packages/engine/src/index.ts

@@ -24,15 +24,11 @@ export {
   type RuntimeMetrics,
   type ProjectRuntimeEvents,
   type GlobalMetrics,
-  type TaskExecutionResult,
-  type RuntimeHealth,
-  type RuntimeEventType,
 } from "./project-runtime.js";
 
 export { InProcessRuntime } from "./runtimes/in-process-runtime.js";
 export { ChildProcessRuntime } from "./runtimes/child-process-runtime.js";
 export { ProjectManager, type ProjectManagerEvents } from "./project-manager.js";
-export { HybridExecutor, type HybridExecutorEvents, type HybridExecutorOptions } from "./hybrid-executor.js";
 
 // ── IPC Protocol ───────────────────────────────────────────────────────