feat: teams within a project

Projects keep teams of members in their settings (settings.teams; people
outside the project are dropped, teams are archived, not removed; absent
when saving means unchanged). Tickets go to a team (`team`, also filtered
in the list and in MCP search_issues), and a comment mentioning
@[Frontend](team-FRONT) tells each of its members. Settings has the teams
with their members, the ticket a «Equipo» select, the list a team filter,
and «@» offers the teams after the people.

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

libs/web/tracker/domain/src/lib/models/inputs.ts

@@ -46,6 +46,7 @@ export interface CreateIssueInput {
   title: string;
   description?: string | null;
   area?: string | null;
+  team?: string | null;
   priority?: IssuePriority;
   labels?: string[];
   figmaUrl?: string | null;
@@ -98,6 +99,7 @@ export interface IssueListFilter {
   search?: string;
   categories?: StatusCategory[];
   types?: string[];
+  teams?: string[];
   priorities?: IssuePriority[];
   assigneeId?: string;
   unassigned?: boolean;

libs/web/tracker/domain/src/lib/models/models.ts

@@ -131,6 +131,8 @@ export interface IssueSummary {
   /** Ids of the project's settings. */
   type: string;
   area: string | null;
+  /** A team id of the project's settings. */
+  team: string | null;
   title: string;
   status: string;
   statusCategory: StatusCategory;

libs/web/tracker/domain/src/lib/models/workflow.ts

@@ -84,6 +84,17 @@ export interface CustomFieldDefinition {
   archived: boolean;
 }
 
+/** A group of the project's members; `@[Name](team-ID)` tells them all. */
+export interface TeamDefinition {
+  id: string;
+  name: string;
+  memberIds: string[];
+  archived: boolean;
+}
+
+/** Prefix of a team's id in a mention. */
+export const TEAM_MENTION_PREFIX = 'team-';
+
 /** A ticket's value of a custom field. */
 export interface CustomFieldValue {
   fieldId: string;
@@ -99,6 +110,7 @@ export interface ProjectSettings {
   customFields: CustomFieldDefinition[];
   /** Definition of done: a DONE status only with the checklist ticked. */
   checklistBeforeDone?: boolean;
+  teams: TeamDefinition[];
 }
 
 export const FINISHED_CATEGORIES: readonly StatusCategory[] = [
@@ -134,6 +146,7 @@ const EMPTY: ProjectSettings = {
   issueTypes: [],
   areas: [],
   customFields: [],
+  teams: [],
 };
 
 /**
@@ -187,6 +200,15 @@ export class Workflow {
     return this.settings.areas.filter((a) => !a.archived);
   }
 
+  /** Teams to pick (archived ones only show where a ticket still has them). */
+  activeTeams(): TeamDefinition[] {
+    return (this.settings.teams ?? []).filter((t) => !t.archived);
+  }
+
+  team(id: string): TeamDefinition | undefined {
+    return this.settings.teams?.find((t) => t.id === id);
+  }
+
   /** Custom fields to fill in (archived ones only show where they have a value). */
   activeCustomFields(): CustomFieldDefinition[] {
     return (this.settings.customFields ?? []).filter((f) => !f.archived);