feat(KB-228): add schedule time presets

- Add morning, afternoon, evening, and night preset schedules to core automation types
- Update ScheduleForm with preset selection dropdown and time handling
- Add color coding for different schedule types in ScheduleCard
- Add tests for new schedule preset functionality
- Include changeset for release tracking

packages/core/src/automation.ts

@@ -1,5 +1,5 @@
 /** Schedule type presets plus a custom cron option. */
-export type ScheduleType = "hourly" | "daily" | "weekly" | "monthly" | "custom";
+export type ScheduleType = "hourly" | "daily" | "weekly" | "monthly" | "custom" | "every15Minutes" | "every30Minutes" | "every2Hours" | "every6Hours" | "every12Hours" | "weekdays";
 
 /** Mapping from preset schedule types to their cron expressions. */
 export const AUTOMATION_PRESETS: Record<Exclude<ScheduleType, "custom">, string> = {
@@ -7,6 +7,12 @@ export const AUTOMATION_PRESETS: Record<Exclude<ScheduleType, "custom">, string>
   daily: "0 0 * * *",
   weekly: "0 0 * * 1",
   monthly: "0 0 1 * *",
+  every15Minutes: "*/15 * * * *",
+  every30Minutes: "*/30 * * * *",
+  every2Hours: "0 */2 * * *",
+  every6Hours: "0 */6 * * *",
+  every12Hours: "0 */12 * * *",
+  weekdays: "0 9 * * 1-5",
 };
 
 /** Result of a single automation run. */

packages/dashboard/app/components/ScheduleCard.tsx

@@ -47,6 +47,12 @@ const SCHEDULE_TYPE_COLORS: Record<string, string> = {
   weekly: "var(--color-purple, #a855f7)",
   monthly: "var(--color-orange, #f97316)",
   custom: "var(--color-gray, #6b7280)",
+  every15Minutes: "var(--color-cyan, #06b6d4)",
+  every30Minutes: "var(--color-teal, #14b8a6)",
+  every2Hours: "var(--color-indigo, #6366f1)",
+  every6Hours: "var(--color-rose, #f43f5e)",
+  every12Hours: "var(--color-amber, #f59e0b)",
+  weekdays: "var(--color-emerald, #10b981)",
 };
 
 interface ScheduleCardProps {

packages/dashboard/app/components/ScheduleForm.tsx

@@ -7,6 +7,12 @@ const PRESET_CRON: Record<Exclude<ScheduleType, "custom">, string> = {
   daily: "0 0 * * *",
   weekly: "0 0 * * 1",
   monthly: "0 0 1 * *",
+  every15Minutes: "*/15 * * * *",
+  every30Minutes: "*/30 * * * *",
+  every2Hours: "0 */2 * * *",
+  every6Hours: "0 */6 * * *",
+  every12Hours: "0 */12 * * *",
+  weekdays: "0 9 * * 1-5",
 };
 
 const SCHEDULE_TYPE_LABELS: Record<ScheduleType, string> = {
@@ -15,6 +21,12 @@ const SCHEDULE_TYPE_LABELS: Record<ScheduleType, string> = {
   weekly: "Every week (Monday)",
   monthly: "Every month (1st)",
   custom: "Custom cron expression",
+  every15Minutes: "Every 15 minutes",
+  every30Minutes: "Every 30 minutes",
+  every2Hours: "Every 2 hours",
+  every6Hours: "Every 6 hours",
+  every12Hours: "Every 12 hours",
+  weekdays: "Weekdays at 9 AM (Mon-Fri)",
 };
 
 /**

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

@@ -136,6 +136,27 @@ describe("ScheduleForm", () => {
       const cronField = screen.getByLabelText("Cron Expression") as HTMLInputElement;
       expect(cronField.value).toBe("0 * * * *");
     });
+
+    it("auto-fills cron expression for every15Minutes preset", () => {
+      render(<ScheduleForm onSubmit={onSubmit} onCancel={onCancel} />);
+      fireEvent.change(screen.getByLabelText("Schedule"), { target: { value: "every15Minutes" } });
+      const cronField = screen.getByLabelText("Cron Expression") as HTMLInputElement;
+      expect(cronField.value).toBe("*/15 * * * *");
+    });
+
+    it("auto-fills cron expression for every6Hours preset", () => {
+      render(<ScheduleForm onSubmit={onSubmit} onCancel={onCancel} />);
+      fireEvent.change(screen.getByLabelText("Schedule"), { target: { value: "every6Hours" } });
+      const cronField = screen.getByLabelText("Cron Expression") as HTMLInputElement;
+      expect(cronField.value).toBe("0 */6 * * *");
+    });
+
+    it("auto-fills cron expression for weekdays preset", () => {
+      render(<ScheduleForm onSubmit={onSubmit} onCancel={onCancel} />);
+      fireEvent.change(screen.getByLabelText("Schedule"), { target: { value: "weekdays" } });
+      const cronField = screen.getByLabelText("Cron Expression") as HTMLInputElement;
+      expect(cronField.value).toBe("0 9 * * 1-5");
+    });
   });
 
   describe("submission", () => {