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>

apps/api/schema.gql

@@ -45,6 +45,27 @@ type Aging {
   thresholdDays: Float
 }
 
+"""Alerts → bugs: the secret URL monitoring tools call to open bugs"""
+type AlertIntegration {
+  enabled: Boolean!
+  priority: IssuePriority!
+
+  """Ticket type it opens; null: the project's first bug type"""
+  typeId: ID
+
+  """
+  Path of the URL on this API, secret token included; only owners and admins see it
+  """
+  webhookPath: String
+}
+
+input AlertSettingsInput {
+  priority: IssuePriority
+
+  """Ticket type to open; null: the project's first bug type"""
+  typeId: ID
+}
+
 type AreaOption {
   archived: Boolean!
   id: String!
@@ -977,6 +998,9 @@ type Mutation {
   deleteSprint(sprintId: ID!): CommandResult!
   deleteWebhook(webhookId: ID!): Boolean!
 
+  """Turn it off; the bugs it opened stay"""
+  disableAlertIntegration(projectId: ID!): Boolean!
+
   """
   A new ticket like this one: what it says, not where it stands (the key comes in the result)
   """
@@ -1029,9 +1053,17 @@ type Mutation {
   """My calendar URL stops working"""
   revokeCalendarFeed: Boolean!
 
+  """A new secret URL; the old one stops working at once"""
+  rotateAlertToken(projectId: ID!): AlertIntegration!
+
   """A new secret for a repository; the old one stops working"""
   rotateGitRepositorySecret(projectId: ID!, repositoryId: ID!): GitRepository!
 
+  """
+  Turn alerts → bugs on, or change the type and priority it opens (the URL stays)
+  """
+  saveAlertIntegration(input: AlertSettingsInput!, projectId: ID!): AlertIntegration!
+
   """Save the current board filters under a name (members of the project)"""
   saveFilter(input: SaveFilterInput!): ID!
 
@@ -1507,6 +1539,7 @@ type Query {
     limit: Int! = 50
     projectId: ID!
   ): [Activity!]!
+  alertIntegration(projectId: ID!): AlertIntegration!
   automations(projectId: ID!): [Automation!]!
 
   """The project's link for clients, if any (owners and admins)"""