feat(KB-229): add multi-step scheduled tasks

- Add Step types to core data model (command, validation, approval steps)
- Update AutomationStore CRUD operations for step management
- Refactor CronRunner for sequential step execution with per-step config
- Add Dashboard API routes for step CRUD and step-aware schedule updates
- Create ScheduleStepsEditor component for visual step configuration
- Add StepTypeBadge component for step type visualization
- Update ScheduleCard and ScheduleForm to display and manage steps
- Add comprehensive test coverage for stores, runner, and components
- Add changeset for patch release

packages/dashboard/app/api.ts

@@ -18,7 +18,7 @@ import type {
   WorkflowStepInput,
 } from "@kb/core";
 import type { PlanningQuestion, PlanningSummary, PlanningResponse } from "@kb/core";
-import type { ScheduledTask, ScheduledTaskCreateInput, ScheduledTaskUpdateInput, AutomationRunResult } from "@kb/core";
+import type { ScheduledTask, ScheduledTaskCreateInput, ScheduledTaskUpdateInput, AutomationRunResult, AutomationStep } from "@kb/core";
 
 function looksLikeHtml(body: string): boolean {
   const trimmed = body.trim();
@@ -1093,18 +1093,18 @@ export function fetchAutomation(id: string): Promise<ScheduledTask> {
 }
 
 export function createAutomation(input: ScheduledTaskCreateInput): Promise<ScheduledTask> {
-  const { name, description, scheduleType, cronExpression, command, enabled, timeoutMs } = input;
+  const { name, description, scheduleType, cronExpression, command, enabled, timeoutMs, steps } = input;
   return api<ScheduledTask>("/automations", {
     method: "POST",
-    body: JSON.stringify({ name, description, scheduleType, cronExpression, command, enabled, timeoutMs }),
+    body: JSON.stringify({ name, description, scheduleType, cronExpression, command, enabled, timeoutMs, steps }),
   });
 }
 
 export function updateAutomation(id: string, updates: ScheduledTaskUpdateInput): Promise<ScheduledTask> {
-  const { name, description, scheduleType, cronExpression, command, enabled, timeoutMs } = updates;
+  const { name, description, scheduleType, cronExpression, command, enabled, timeoutMs, steps } = updates;
   return api<ScheduledTask>(`/automations/${id}`, {
     method: "PATCH",
-    body: JSON.stringify({ name, description, scheduleType, cronExpression, command, enabled, timeoutMs }),
+    body: JSON.stringify({ name, description, scheduleType, cronExpression, command, enabled, timeoutMs, steps }),
   });
 }
 
@@ -1126,6 +1126,13 @@ export function toggleAutomation(id: string): Promise<ScheduledTask> {
   });
 }
 
+export function reorderAutomationSteps(id: string, stepIds: string[]): Promise<ScheduledTask> {
+  return api<ScheduledTask>(`/automations/${id}/steps/reorder`, {
+    method: "POST",
+    body: JSON.stringify({ stepIds }),
+  });
+}
+
 // ── Activity Log API ────────────────────────────────────────────
 
 /** Re-export ActivityLogEntry type from core for convenience */