feat(geschichten): chip-row UI for multi-person AND filter

The /geschichten list page now renders one removable chip per active
person filter and lets users add more via the existing typeahead. The
URL uses repeated ?personId= params (matching the documents tag
filter), which the regenerated API client passes straight through to
the backend's new array-bound endpoint. New translation keys cover the
chip remove aria-label, the AND hint shown while picking, and the
multi-person empty state.

frontend/src/lib/generated/api.ts

@@ -2140,9 +2140,9 @@ export interface components {
             deathYear?: number;
             familyMember?: boolean;
             notes?: string;
+            alias?: string;
             /** Format: int64 */
             documentCount?: number;
-            alias?: string;
         };
         InferredRelationshipWithPersonDTO: {
             person: components["schemas"]["PersonNodeDTO"];
@@ -3339,7 +3339,7 @@ export interface operations {
         parameters: {
             query?: {
                 status?: "DRAFT" | "PUBLISHED";
-                personId?: string;
+                personId?: string[];
                 documentId?: string;
                 limit?: number;
             };