feat: saved views of my work, across my projects

A person saves named views of «my work»: projects, assigned to me, that I
follow, status categories, priorities, bugs only, overdue and text. They
are private (Mongo my_views, no history), listed and deleted by their
owner (GraphQL myViews / saveMyView / deleteMyView, REST /api/me/views),
and run as the cross-project search, which gains project, priority,
bugsOnly and overdue filters (also in MCP my_issues). The home page shows
them as a bar above «my work», with a drawer to save a new one.

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

libs/web/tracker/domain/src/lib/ports/gateways.ts

@@ -25,6 +25,8 @@ import {
   Release,
   ReleaseBurnup,
   SavedFilter,
+  MyView,
+  MyViewCriteria,
   SavedFilterCriteria,
   Sprint,
   SprintBurndown,
@@ -243,6 +245,13 @@ export abstract class SavedFiltersGateway {
     criteria: SavedFilterCriteria;
   }): Observable<string>;
   abstract remove(id: string): Observable<void>;
+  /** My views of «my work», by name. */
+  abstract myViews(): Observable<MyView[]>;
+  abstract saveMyView(input: {
+    name: string;
+    criteria: MyViewCriteria;
+  }): Observable<string>;
+  abstract removeMyView(id: string): Observable<void>;
 }
 
 export abstract class CommentsGateway {