feat: alerts open bugs, and repeats of the same problem go to that bug

Owners and admins turn on a secret URL per project (Settings →
Integrations), POST /api/webhooks/alerts/{project}/{token}, that Sentry,
Uptime Kuma, Prometheus Alertmanager, Grafana or any tool sending JSON
with a title can call. A new problem opens a bug as TaskStream (label
«alerta», chosen type and priority); while that bug is open, the same
fingerprint goes to it (a comment at most every 30 minutes) and
«resolved» is said on it; once it is closed, a new bug names the old
one. Alerts of a project are handled one at a time, so two at once open
one bug, and a bug not yet projected still counts as open. Unknown
project, alerts off or a bad token all answer 403.

TaskStream may now comment as the system actor, like it already opened
tickets for public proposals. Stored in Mongo (alert_integrations,
alert_traces), not in the event store.

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

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

@@ -1,3 +1,4 @@
+import { IssuePriority } from '../models/enums';
 import { Home } from '../models/home';
 import { PortfolioProject, ProjectInsights } from '../models/insights';
 import {
@@ -15,6 +16,7 @@ import {
   CalendarFeed,
   PushDeviceSubscription,
   CommandResult,
+  AlertIntegration,
   Comment,
   Decision,
   Epic,
@@ -247,6 +249,19 @@ export abstract class WebhooksGateway {
 }
 
 /** The project's Git webhook (owners and admins configure it). */
+/** Alerts → bugs (owners and admins). */
+export abstract class AlertsGateway {
+  abstract integration(projectId: string): Observable<AlertIntegration>;
+  /** Turns it on, or changes what it opens; the URL stays. */
+  abstract save(
+    projectId: string,
+    settings: { typeId: string | null; priority: IssuePriority },
+  ): Observable<AlertIntegration>;
+  /** A new URL; the old one stops working. */
+  abstract rotateToken(projectId: string): Observable<AlertIntegration>;
+  abstract disable(projectId: string): Observable<void>;
+}
+
 export abstract class GitGateway {
   abstract integration(projectId: string): Observable<GitIntegration>;
   /** A repository with its own secret (the first turns the integration on). */