feat: move unfinished tickets between releases

- Bulk editing gets «Release…» (open releases or none), and the list
  view a release filter, also reachable from each release («Ver en la
  lista», ?release=).
- Archiving a release asks where its unfinished tickets go, as closing
  a sprint does: ReleaseArchivedEvent carries `moveTo` (an open release
  of the same project, or none) and the saga moves them there; finished
  ones stay. In GraphQL, REST and the MCP's archive_release.
- Chapter 10 lists the next features and the ideas to weigh.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

libs/web/tracker/presenters/src/lib/ui/bulk-bar.ts

@@ -15,7 +15,11 @@ import {
   type PiSelectFieldOption,
 } from '@pi/ui';
 import { ProjectFacade } from '@task-stream/web/tracker/application';
-import { BulkChange, IssuePriority } from '@task-stream/web/tracker/domain';
+import {
+  BulkChange,
+  IssuePriority,
+  ReleaseStatus,
+} from '@task-stream/web/tracker/domain';
 import { options, PRIORITY } from './copy';
 
 /** "Nobody" / "no sprint" in the selects. */
@@ -62,6 +66,9 @@ const NOBODY = '__none__';
           @case ('sprint') {
             <pi-select-field [options]="sprintOptions()" [(value)]="value" />
           }
+          @case ('release') {
+            <pi-select-field [options]="releaseOptions()" [(value)]="value" />
+          }
           @case ('priority') {
             <pi-select-field [options]="priorityOptions" [(value)]="value" />
           }
@@ -112,6 +119,7 @@ export class BulkBarComponent {
     { value: 'status', label: 'Mover a…' },
     { value: 'assignee', label: 'Asignar a…' },
     { value: 'sprint', label: 'Sprint…' },
+    { value: 'release', label: 'Release…' },
     { value: 'priority', label: 'Prioridad…' },
     { value: 'label', label: 'Añadir etiqueta…' },
   ];
@@ -141,6 +149,16 @@ export class BulkBarComponent {
         .map((s) => ({ value: s.id, label: s.name })),
     ],
   );
+  /** Only open releases take tickets. */
+  protected readonly releaseOptions = computed<PiSelectFieldOption<string>[]>(
+    () => [
+      { value: NOBODY, label: 'Ninguna release' },
+      ...this.project
+        .releases()
+        .filter((r) => r.status === ReleaseStatus.PLANNED)
+        .map((r) => ({ value: r.id, label: r.name })),
+    ],
+  );
   protected readonly priorityOptions = options(PRIORITY);
   protected readonly canApply = computed(() =>
     this.field() === 'label' ? !!this.label().trim() : !!this.value(),
@@ -159,6 +177,9 @@ export class BulkBarComponent {
       case 'sprint':
         change.sprintId = value === NOBODY ? null : value;
         break;
+      case 'release':
+        change.releaseId = value === NOBODY ? null : value;
+        break;
       case 'priority':
         if (value) change.priority = value as IssuePriority;
         break;