feat: tickets I follow, and more news for followers

"Que sigo" on the home page lists the open tickets I follow, whoever
works on them; `watching` filters my issues (REST, GraphQL, MCP) and a
project's search (none without a session).

Followers now also hear when a ticket's priority or due date changes,
and when it enters or leaves a sprint. Smaller edits (title, labels…)
still do not notify.

Docs (with the REPLIED row the replies change missed), Word and PDF
updated.

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

libs/web/tracker/application/src/lib/events/home.events.ts

@@ -16,6 +16,7 @@ export const homeApiEvents = eventGroup({
     loaded: type<{
       mine: IssuePage;
       awaitingQa: IssuePage;
+      following: IssuePage;
       releases: Release[];
     }>(),
     loadFailed: type<string>(),

libs/web/tracker/application/src/lib/facades/facades.spec.ts

@@ -390,19 +390,22 @@ describe('HomeFacade', () => {
     ({ id: key, key, status, statusCategory, title: key }) as never;
 
   it('loads my work and groups it by category, QA failures first', () => {
-    const mine = vi.fn((filter: { assignedToMe: boolean }) =>
-      of(
-        filter.assignedToMe
-          ? {
-              items: [
-                issue('WEB-1', 'IN_PROGRESS', 'IN_PROGRESS'),
-                issue('WEB-4', 'BACKLOG', 'TODO'),
-                issue('WEB-2', 'QA_FAILED', 'IN_PROGRESS'),
-              ],
-              total: 3,
-            }
-          : { items: [issue('WEB-3', 'STAGING', 'QA')], total: 1 },
-      ),
+    const mine = vi.fn(
+      (filter: { assignedToMe: boolean; watching?: boolean }) =>
+        of(
+          filter.watching
+            ? { items: [issue('API-7', 'IN_REVIEW', 'IN_PROGRESS')], total: 1 }
+            : filter.assignedToMe
+              ? {
+                  items: [
+                    issue('WEB-1', 'IN_PROGRESS', 'IN_PROGRESS'),
+                    issue('WEB-4', 'BACKLOG', 'TODO'),
+                    issue('WEB-2', 'QA_FAILED', 'IN_PROGRESS'),
+                  ],
+                  total: 3,
+                }
+              : { items: [issue('WEB-3', 'STAGING', 'QA')], total: 1 },
+        ),
     );
     TestBed.configureTestingModule({
       providers: [
@@ -437,6 +440,10 @@ describe('HomeFacade', () => {
     ]);
     expect(home.qaFailed()).toBe(1);
     expect(home.awaitingQaTotal()).toBe(1);
+    expect(mine).toHaveBeenCalledWith(
+      expect.objectContaining({ assignedToMe: false, watching: true }),
+    );
+    expect(home.following().map((i) => i.key)).toEqual(['API-7']);
     expect(home.releases().map((r) => r.name)).toEqual(['v1.4.0']);
   });
 });

libs/web/tracker/application/src/lib/facades/home.facade.ts

@@ -18,6 +18,9 @@ export class HomeFacade {
   /** Tickets of my projects in a QA-category status (anyone's). */
   readonly awaitingQa = this.store.awaitingQa;
   readonly awaitingQaTotal = this.store.awaitingQaTotal;
+  /** Open tickets I follow, whoever works on them. */
+  readonly following = this.store.following;
+  readonly followingTotal = this.store.followingTotal;
   /** Planned releases of my projects, soonest first. */
   readonly releases = this.store.releases;
   /** False until the first load: show skeletons, not empty states. */

libs/web/tracker/application/src/lib/stores/home.store.ts

@@ -32,6 +32,8 @@ interface HomeState {
   mineTotal: number;
   awaitingQa: IssueSummary[];
   awaitingQaTotal: number;
+  following: IssueSummary[];
+  followingTotal: number;
   releases: Release[];
   loaded: boolean;
   loading: boolean;
@@ -40,7 +42,7 @@ interface HomeState {
 
 /**
  * "My work" across every project I belong to: my open tickets, tickets
- * waiting for QA and upcoming releases. Root-scoped, so coming back to the
+ * waiting for QA, the open ones I follow and upcoming releases. Root-scoped, so coming back to the
  * home page shows the last data at once while it refreshes.
  */
 export const HomeStore = signalStore(
@@ -50,6 +52,8 @@ export const HomeStore = signalStore(
     mineTotal: 0,
     awaitingQa: [],
     awaitingQaTotal: 0,
+    following: [],
+    followingTotal: 0,
     releases: [],
     loaded: false,
     loading: false,
@@ -82,6 +86,8 @@ export const HomeStore = signalStore(
       mineTotal: payload.mine.total,
       awaitingQa: payload.awaitingQa.items,
       awaitingQaTotal: payload.awaitingQa.total,
+      following: payload.following.items,
+      followingTotal: payload.following.total,
       releases: payload.releases,
       loaded: true,
       loading: false,
@@ -111,6 +117,12 @@ export const HomeStore = signalStore(
               categories: [StatusCategory.QA],
               limit: 20,
             }),
+            following: issues.mine({
+              assignedToMe: false,
+              watching: true,
+              categories: [...OPEN_CATEGORIES],
+              limit: 20,
+            }),
             releases: releases.upcoming(5),
           }).pipe(
             mapResponse({