feat(tickets): persistance des filtres tickets entre redémarrages (#29)

Introduit le port UiPreferencesGateway et son adapter uiPreferences,
avec le module ticketFilterPersistence qui sauvegarde/restaure les
filtres (recherche, statut, sprint, agents) via useTickets,
useTicketSearch et useProjectAgents. Couvert par tests unitaires et
un test d'intégration.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

frontend/src/features/tickets/TicketPicker.tsx

@@ -31,6 +31,7 @@ import type { TicketRef } from "@/domain";
 import type { TicketListQuery } from "@/ports";
 import { Button, Spinner, cn, zIndex } from "@/shared";
 import { TicketFacetsBar } from "./TicketFacetsBar";
+import { pickerFiltersKey } from "./ticketFilterPersistence";
 import { PriorityBadge, StatusBadge, TicketRef as TicketRefBadge } from "./ticketMeta";
 import {
   useTicketSearch,
@@ -55,6 +56,13 @@ export interface TicketPickerProps {
   excludeRefs?: TicketRef[];
   /** Seed filter/search query. */
   initialQuery?: TicketListQuery;
+  /**
+   * Whether the picker persists its filters across openings (ticket #29,
+   * default `true`). `initialQuery` still wins per field, so a caller imposing a
+   * business filter keeps priority; a caller that must never inherit stored
+   * preferences can opt out entirely with `false`.
+   */
+  persistFilters?: boolean;
   /**
    * Selection callback. In `"single"` mode it receives one
    * {@link TicketPickerResult}; in `"multi"` it receives the array.
@@ -76,6 +84,7 @@ export function TicketPicker({
   selectionMode = "single",
   excludeRefs,
   initialQuery,
+  persistFilters = true,
   onSelect,
   onClose,
 }: TicketPickerProps) {
@@ -88,6 +97,7 @@ export function TicketPicker({
       selectionMode={selectionMode}
       excludeRefs={excludeRefs}
       initialQuery={initialQuery}
+      persistFilters={persistFilters}
       onSelect={onSelect}
       onClose={onClose}
     />
@@ -106,16 +116,27 @@ function TicketPickerBody({
   selectionMode,
   excludeRefs,
   initialQuery,
+  persistFilters,
   onSelect,
   onClose,
 }: Required<
   Pick<
     TicketPickerProps,
-    "projectId" | "title" | "confirmLabel" | "selectionMode" | "onSelect" | "onClose"
+    | "projectId"
+    | "title"
+    | "confirmLabel"
+    | "selectionMode"
+    | "persistFilters"
+    | "onSelect"
+    | "onClose"
   >
 > &
   Pick<TicketPickerProps, "excludeRefs" | "initialQuery">) {
-  const vm = useTicketSearch(projectId, { initialQuery, excludeRefs });
+  const vm = useTicketSearch(projectId, {
+    initialQuery,
+    excludeRefs,
+    persistenceKey: persistFilters ? pickerFiltersKey(projectId) : undefined,
+  });
   const dialogRef = useRef<HTMLDivElement>(null);
   const [selecting, setSelecting] = useState(false);
   const [resolveError, setResolveError] = useState<string | null>(null);