feat: estimate tickets and see the team's velocity

Story points can be set on the ticket page and when creating a ticket,
and show on cards, column headers, subtasks and the backlog. The Sprints
tab charts the points finished per closed sprint and warns when a planned
sprint holds more than the recent average.

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

libs/web/tracker/presenters/src/lib/ui/issue-card.ts

@@ -45,6 +45,11 @@ import { initials, PRIORITY, PRIORITY_LEVEL, typeLook } from './copy';
             >↑ {{ parent.key }}</span
           >
         }
+        @if (issue().storyPoints !== null) {
+          <span class="ts-card__points" title="Estimación">{{
+            issue().storyPoints
+          }}</span>
+        }
         @if (issue().release; as release) {
           <span class="ts-card__meta" title="Release"
             >◆ {{ release.name }}</span
@@ -73,6 +78,18 @@ import { initials, PRIORITY, PRIORITY_LEVEL, typeLook } from './copy';
     :host {
       display: block;
     }
+    .ts-card__points {
+      display: inline-grid;
+      place-items: center;
+      min-width: 1.25rem;
+      height: 1.25rem;
+      padding: 0 0.3rem;
+      border-radius: 999px;
+      background: var(--ts-line);
+      color: var(--ts-ink-soft);
+      font-size: 0.6875rem;
+      font-weight: 600;
+    }
     .ts-card {
       --type: var(--ts-muted);
       position: relative;