✨(frontend) add "more than a year" modification date preset

Filter items last modified over a year ago, available wherever the
modification date filter is used.

src/frontend/apps/drive/src/features/explorer/components/filters/ExplorerFilterModified.tsx

@@ -15,6 +15,7 @@ const MODIFIED_PRESETS: DatePreset[] = [
   "last_7_days",
   "last_30_days",
   "this_year",
+  "more_than_a_year",
 ];
 const MODIFIED_CUSTOM = "custom";
 

src/frontend/apps/drive/src/features/explorer/utils/__tests__/dateFilters.test.ts

@@ -31,6 +31,12 @@ describe("presetRange", () => {
       updated_at_before: "2026-05-29",
     });
   });
+
+  it("caps at one year ago for the more than a year preset", () => {
+    expect(presetRange("more_than_a_year", today)).toEqual({
+      updated_at_before: "2025-05-29",
+    });
+  });
 });
 
 describe("toISODate", () => {

src/frontend/apps/drive/src/features/explorer/utils/dateFilters.ts

@@ -1,6 +1,11 @@
 import { ItemFilters } from "@/features/drivers/Driver";
 
-export type DatePreset = "today" | "last_7_days" | "last_30_days" | "this_year";
+export type DatePreset =
+  | "today"
+  | "last_7_days"
+  | "last_30_days"
+  | "this_year"
+  | "more_than_a_year";
 
 export type DateRange = Pick<
   ItemFilters,
@@ -27,6 +32,11 @@ const addDays = (date: Date, days: number): Date => {
  * bound. `today` is injectable for deterministic tests.
  */
 export const presetRange = (preset: DatePreset, today: Date = new Date()): DateRange => {
+  if (preset === "more_than_a_year") {
+    const before = new Date(today.getFullYear() - 1, today.getMonth(), today.getDate());
+    return { updated_at_before: toISODate(before) };
+  }
+
   let after: Date;
   switch (preset) {
     case "today":

src/frontend/apps/drive/src/features/i18n/translations.json

@@ -289,6 +289,7 @@
               "last_7_days": "Last 7 days",
               "last_30_days": "Last 30 days",
               "this_year": "This year",
+              "more_than_a_year": "More than a year",
               "custom": "Custom range"
             },
             "start": "Start",
@@ -926,6 +927,7 @@
               "last_7_days": "7 derniers jours",
               "last_30_days": "30 derniers jours",
               "this_year": "Cette année",
+              "more_than_a_year": "Il y a plus d'un an",
               "custom": "Période personnalisée"
             },
             "start": "Début",