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/api/tracker/infrastructure/src/lib/mongo/my-views.repository.ts

@@ -0,0 +1,47 @@
+import { Injectable } from '@nestjs/common';
+import { InjectModel } from '@nestjs/mongoose';
+import { MyViewsRepository } from '@task-stream/api/tracker/application';
+import { MyViewReadModel } from '@task-stream/api/tracker/domain';
+import { Model } from 'mongoose';
+import { MyViewDoc, ReadModels, fromDoc } from './read-model.schemas';
+
+@Injectable()
+export class MongoMyViewsRepository extends MyViewsRepository {
+  constructor(
+    @InjectModel(ReadModels.MyView)
+    private readonly views: Model<MyViewDoc>,
+  ) {
+    super();
+  }
+
+  async findByOwner(ownerId: string): Promise<MyViewReadModel[]> {
+    const docs = await this.views
+      .find({ ownerId })
+      .sort({ name: 1 })
+      .lean<MyViewDoc[]>();
+    return docs.map(toView);
+  }
+
+  async findById(id: string): Promise<MyViewReadModel | null> {
+    const doc = await this.views.findOne({ id }).lean<MyViewDoc>();
+    return doc ? toView(doc) : null;
+  }
+
+  countByOwner(ownerId: string): Promise<number> {
+    return this.views.countDocuments({ ownerId });
+  }
+
+  async insert(view: MyViewReadModel): Promise<void> {
+    await this.views.create(view);
+  }
+
+  async delete(id: string): Promise<void> {
+    await this.views.deleteOne({ id });
+  }
+}
+
+/** Mongo leaves empty objects out: a view with no criteria has none. */
+function toView(doc: MyViewDoc): MyViewReadModel {
+  const view = fromDoc(doc) as MyViewReadModel;
+  return { ...view, criteria: view.criteria ?? {} };
+}