feat(clients): add an "In 1 month" snooze preset

apps/web/src/components/Sidebar.snooze.test.ts

@@ -8,7 +8,7 @@ function localDate(year: number, month: number, day: number, hour: number, minut
 }
 
 describe("resolveSnoozePresets", () => {
-  it("offers one hour, three hours, evening, tomorrow, and next week in the morning", () => {
+  it("offers one hour, three hours, evening, tomorrow, next week, and in a month in the morning", () => {
     // Wednesday 2026-04-08 10:00 local.
     const presets = resolveSnoozePresets(localDate(2026, 4, 8, 10), "locale");
     expect(presets.map((preset) => preset.id)).toEqual([
@@ -17,6 +17,7 @@ describe("resolveSnoozePresets", () => {
       "evening",
       "tomorrow",
       "next-week",
+      "month",
     ]);
     const threeHours = presets.find((preset) => preset.id === "three-hours");
     expect(new Date(threeHours!.snoozedUntil).getHours()).toBe(13);
@@ -30,6 +31,11 @@ describe("resolveSnoozePresets", () => {
     const nextWeekDate = new Date(nextWeek!.snoozedUntil);
     expect(nextWeekDate.getDay()).toBe(1);
     expect(nextWeekDate.getDate()).toBe(13);
+    const inAMonth = presets.find((preset) => preset.id === "month");
+    const inAMonthDate = new Date(inAMonth!.snoozedUntil);
+    expect([inAMonthDate.getMonth(), inAMonthDate.getDate(), inAMonthDate.getHours()]).toEqual([
+      4, 8, 9,
+    ]);
   });
 
   it("whenLabel complements the label instead of repeating it", () => {
@@ -43,15 +49,18 @@ describe("resolveSnoozePresets", () => {
     expect(tomorrow!.whenLabel).toMatch(/9/);
     const nextWeek = presets.find((preset) => preset.id === "next-week");
     expect(nextWeek!.whenLabel).toMatch(/Mon/);
+    const inAMonth = presets.find((preset) => preset.id === "month");
+    // The day of month, in any locale ("May 8 9:00", "8. Mai 9:00").
+    expect(inAMonth!.whenLabel).toMatch(/\b8\b/);
   });
 
   it("drops the evening preset once evening is near or past", () => {
     expect(
       resolveSnoozePresets(localDate(2026, 4, 8, 17, 30), "locale").map((preset) => preset.id),
-    ).toEqual(["hour", "three-hours", "tomorrow", "next-week"]);
+    ).toEqual(["hour", "three-hours", "tomorrow", "next-week", "month"]);
     expect(
       resolveSnoozePresets(localDate(2026, 4, 8, 21), "locale").map((preset) => preset.id),
-    ).toEqual(["hour", "three-hours", "tomorrow", "next-week"]);
+    ).toEqual(["hour", "three-hours", "tomorrow", "next-week", "month"]);
   });
 
   it("puts next week a full week out when today is Monday", () => {
@@ -61,6 +70,31 @@ describe("resolveSnoozePresets", () => {
     expect(nextWeek.getDay()).toBe(1);
     expect(nextWeek.getDate()).toBe(13);
   });
+  it("wakes in a month on the same day one month out", () => {
+    const wakeOf = (now: Date) => {
+      const wake = new Date(
+        resolveSnoozePresets(now, "locale").find((preset) => preset.id === "month")!.snoozedUntil,
+      );
+      return [wake.getFullYear(), wake.getMonth() + 1, wake.getDate(), wake.getHours()];
+    };
+    expect(wakeOf(localDate(2026, 9, 29, 10))).toEqual([2026, 10, 29, 9]);
+    // The last day of a month is not folded into "Tomorrow" any more.
+    expect(wakeOf(localDate(2026, 9, 30, 22))).toEqual([2026, 10, 30, 9]);
+    expect(wakeOf(localDate(2026, 12, 15, 10))).toEqual([2027, 1, 15, 9]);
+  });
+
+  it("clamps the one-month wake to the last day of a shorter month", () => {
+    const wakeOf = (now: Date) => {
+      const wake = new Date(
+        resolveSnoozePresets(now, "locale").find((preset) => preset.id === "month")!.snoozedUntil,
+      );
+      return [wake.getMonth() + 1, wake.getDate()];
+    };
+    expect(wakeOf(localDate(2026, 1, 31, 10))).toEqual([2, 28]);
+    expect(wakeOf(localDate(2028, 1, 31, 10))).toEqual([2, 29]);
+    expect(wakeOf(localDate(2026, 3, 31, 10))).toEqual([4, 30]);
+  });
+
   it("formats preset times with the selected clock preference", () => {
     const twelveHour = resolveSnoozePresets(localDate(2026, 4, 8, 10), "12-hour");
     const twentyFourHour = resolveSnoozePresets(localDate(2026, 4, 8, 10), "24-hour");

apps/web/src/components/Sidebar.snooze.ts

@@ -28,7 +28,9 @@ export function resolveSnoozePresets(
       whenLabel:
         preset.id === "next-week"
           ? `${wake.toLocaleDateString(undefined, { weekday: "short" })} ${time}`
-          : time,
+          : preset.id === "month"
+            ? `${wake.toLocaleDateString(undefined, { month: "short", day: "numeric" })} ${time}`
+            : time,
     };
   });
 }

packages/client-runtime/src/state/threadSettled.ts

@@ -214,7 +214,13 @@ const HOUR_MS = 60 * 60 * 1_000;
 const EVENING_HOUR = 18;
 const MORNING_HOUR = 9;
 
-export type SnoozePresetId = "hour" | "three-hours" | "evening" | "tomorrow" | "next-week";
+export type SnoozePresetId =
+  | "hour"
+  | "three-hours"
+  | "evening"
+  | "tomorrow"
+  | "next-week"
+  | "month";
 
 export interface SnoozePreset {
   readonly id: SnoozePresetId;
@@ -245,12 +251,25 @@ function addSnoozeDays(base: Date, days: number): Date {
   return next;
 }
 
+// Same day one month later, clamped to that month's last day: Jan 31 wakes
+// on Feb 28 (29 in leap years) instead of overflowing into March.
+function addSnoozeMonth(base: Date): Date {
+  const next = new Date(base);
+  const day = next.getDate();
+  next.setDate(1);
+  next.setMonth(next.getMonth() + 1);
+  const lastDay = new Date(next.getFullYear(), next.getMonth() + 1, 0).getDate();
+  next.setDate(Math.min(day, lastDay));
+  return next;
+}
+
 /**
  * Shared "snooze until" choices for every client. "This evening" only
  * appears while it is meaningfully before evening; after that the calendar
  * choices start at "Tomorrow". Calendar presets that land on the same
  * instant collapse: on Sundays "Tomorrow" and "Next week" are both Monday
- * morning, so only "Tomorrow" is offered.
+ * morning, so only "Tomorrow" is offered. "In 1 month" is the same day one
+ * month out, so it never collides with the others.
  */
 export function resolveSnoozePresets(now: Date): ReadonlyArray<SnoozePreset> {
   const inAnHour = DateTime.toDate(DateTime.makeUnsafe(now.getTime() + HOUR_MS));
@@ -299,6 +318,14 @@ export function resolveSnoozePresets(now: Date): ReadonlyArray<SnoozePreset> {
     });
   }
 
+  const inAMonth = snoozeAtHour(addSnoozeMonth(now), MORNING_HOUR);
+  presets.push({
+    id: "month",
+    label: "In 1 month",
+    whenLabel: `${inAMonth.toLocaleDateString(undefined, { month: "short", day: "numeric" })} ${snoozeTimeOfDayLabel(inAMonth)}`,
+    snoozedUntil: inAMonth.toISOString(),
+  });
+
   return presets;
 }
 

packages/client-runtime/src/state/threadSnoozed.test.ts

@@ -325,6 +325,7 @@ describe("resolveSnoozePresets", () => {
       "evening",
       "tomorrow",
       "next-week",
+      "month",
     ]);
     expect(presets.find((preset) => preset.id === "three-hours")?.snoozedUntil).toBe(
       localDate(2026, 4, 8, 13).toISOString(),
@@ -342,6 +343,7 @@ describe("resolveSnoozePresets", () => {
       "three-hours",
       "tomorrow",
       "next-week",
+      "month",
     ]);
   });
 
@@ -362,6 +364,7 @@ describe("resolveSnoozePresets", () => {
       "three-hours",
       "evening",
       "tomorrow",
+      "month",
     ]);
     const tomorrow = new Date(presets.find((preset) => preset.id === "tomorrow")!.snoozedUntil);
     expect(tomorrow.getDay()).toBe(1);