Add releases table with pending/done toggle to environment side drawer

When an environment is selected, the side drawer now shows a Releases
section with a Pending/Done toggle. Fetches from /api/v2/releases/activity
filtered by environment. Release name and version are clickable links to
the release detail and version pages.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

src/Web/StellaOps.Web/src/app/features/topology/topology-graph-page.component.ts

@@ -6,8 +6,9 @@ import {
   inject,
   signal,
 } from '@angular/core';
+import { HttpClient, HttpParams } from '@angular/common/http';
 import { RouterLink } from '@angular/router';
-import { catchError, of, take } from 'rxjs';
+import { catchError, map, of, take } from 'rxjs';
 
 import { PlatformContextStore } from '../../core/context/platform-context.store';
 import { TopologyLayoutService } from './topology-layout.service';
@@ -17,7 +18,22 @@ import {
   TopologyPositionedNode,
   TopologyRoutedEdge,
 } from './topology-layout.models';
-import { TopologyTarget, TopologyHost } from './topology.models';
+import { TopologyTarget, TopologyHost, PlatformListResponse } from './topology.models';
+
+interface ReleaseActivity {
+  activityId: string;
+  releaseId: string;
+  releaseName: string;
+  version?: string;
+  status: string;
+  eventType: string;
+  occurredAt: string;
+}
+
+const PENDING_STATUSES = new Set([
+  'pending', 'promoting', 'awaiting_approval', 'gates_running',
+  'deploying', 'draft', 'ready',
+]);
 
 @Component({
   selector: 'app-topology-graph-page',
@@ -128,6 +144,41 @@ import { TopologyTarget, TopologyHost } from './topology.models';
                 @if (detailTargets().length === 0 && detailHosts().length === 0 && !detailLoading()) {
                   <p class="drawer-empty">No hosts or targets registered.</p>
                 }
+
+                <!-- Releases -->
+                <div class="drawer-section-header">
+                  <h3 class="drawer-section">Releases</h3>
+                  <div class="toggle-group">
+                    <button
+                      type="button"
+                      [class.toggle-active]="!releasesShowDone()"
+                      (click)="releasesShowDone.set(false)"
+                    >Pending</button>
+                    <button
+                      type="button"
+                      [class.toggle-active]="releasesShowDone()"
+                      (click)="releasesShowDone.set(true)"
+                    >Done</button>
+                  </div>
+                </div>
+                @if (filteredReleases().length > 0) {
+                  <table class="drawer-table">
+                    <thead>
+                      <tr><th>Release</th><th>Version</th><th>Status</th></tr>
+                    </thead>
+                    <tbody>
+                      @for (rel of filteredReleases(); track rel.activityId) {
+                        <tr>
+                          <td><a class="drawer-link" [routerLink]="['/releases/detail', rel.releaseId]">{{ rel.releaseName }}</a></td>
+                          <td><a class="drawer-link" [routerLink]="['/releases/versions', rel.releaseId, 'overview']">{{ rel.version || '—' }}</a></td>
+                          <td><span class="release-status" [class]="'release-status--' + rel.status">{{ rel.status }}</span></td>
+                        </tr>
+                      }
+                    </tbody>
+                  </table>
+                } @else if (!detailLoading()) {
+                  <p class="drawer-empty">No {{ releasesShowDone() ? 'completed' : 'pending' }} releases.</p>
+                }
                 @if (detailLoading()) {
                   <p class="drawer-loading">Loading...</p>
                 }
@@ -398,6 +449,60 @@ import { TopologyTarget, TopologyHost } from './topology.models';
       margin-bottom: 0.15rem;
     }
 
+    /* Section header with toggle */
+    .drawer-section-header {
+      display: flex;
+      justify-content: space-between;
+      align-items: center;
+      padding-top: 0.3rem;
+      border-top: 1px solid var(--color-border-primary);
+    }
+
+    .toggle-group {
+      display: flex;
+      border: 1px solid var(--color-border-primary);
+      border-radius: var(--radius-sm);
+      overflow: hidden;
+    }
+
+    .toggle-group button {
+      border: none;
+      background: var(--color-surface-secondary);
+      color: var(--color-text-secondary);
+      font-size: 0.65rem;
+      padding: 0.15rem 0.4rem;
+      cursor: pointer;
+    }
+
+    .toggle-group button + button {
+      border-left: 1px solid var(--color-border-primary);
+    }
+
+    .toggle-group .toggle-active {
+      background: var(--color-brand-primary);
+      color: var(--color-btn-primary-text, #fff);
+    }
+
+    .drawer-link {
+      color: var(--color-text-link);
+      text-decoration: none;
+      font-weight: 500;
+    }
+
+    .drawer-link:hover {
+      text-decoration: underline;
+    }
+
+    .release-status {
+      font-size: 0.65rem;
+      font-weight: 500;
+    }
+
+    .release-status--deployed, .release-status--succeeded { color: var(--color-status-success-text); }
+    .release-status--pending, .release-status--promoting, .release-status--awaiting_approval { color: var(--color-status-warning-text); }
+    .release-status--failed, .release-status--cancelled, .release-status--rejected { color: var(--color-status-error-text); }
+    .release-status--draft, .release-status--ready { color: var(--color-text-secondary); }
+
     .drawer-actions {
       padding-top: 0.3rem;
       border-top: 1px solid var(--color-border-primary);
@@ -425,6 +530,7 @@ import { TopologyTarget, TopologyHost } from './topology.models';
   `],
 })
 export class TopologyGraphPageComponent {
+  private readonly http = inject(HttpClient);
   private readonly layoutService = inject(TopologyLayoutService);
   readonly context = inject(PlatformContextStore);
 
@@ -435,7 +541,17 @@ export class TopologyGraphPageComponent {
   readonly selectedEdge = signal<TopologyRoutedEdge | null>(null);
   readonly detailTargets = signal<TopologyTarget[]>([]);
   readonly detailHosts = signal<TopologyHost[]>([]);
+  readonly detailReleases = signal<ReleaseActivity[]>([]);
   readonly detailLoading = signal(false);
+  readonly releasesShowDone = signal(false);
+
+  readonly filteredReleases = computed(() => {
+    const all = this.detailReleases();
+    const showDone = this.releasesShowDone();
+    return all.filter((r) =>
+      showDone ? !PENDING_STATUSES.has(r.status) : PENDING_STATUSES.has(r.status),
+    );
+  });
 
   readonly detailTitle = computed(() => {
     const node = this.selectedNode();
@@ -488,8 +604,7 @@ export class TopologyGraphPageComponent {
   onNodeSelected(node: TopologyPositionedNode): void {
     this.selectedNode.set(node);
     this.selectedEdge.set(null);
-    this.detailTargets.set([]);
-    this.detailHosts.set([]);
+    this.resetDetail();
 
     if (node.kind === 'environment' && node.environmentId) {
       this.loadEnvironmentDetail(node.environmentId);
@@ -499,15 +614,20 @@ export class TopologyGraphPageComponent {
   onEdgeSelected(edge: TopologyRoutedEdge): void {
     this.selectedEdge.set(edge);
     this.selectedNode.set(null);
-    this.detailTargets.set([]);
-    this.detailHosts.set([]);
+    this.resetDetail();
   }
 
   clearSelection(): void {
     this.selectedNode.set(null);
     this.selectedEdge.set(null);
+    this.resetDetail();
+  }
+
+  private resetDetail(): void {
     this.detailTargets.set([]);
     this.detailHosts.set([]);
+    this.detailReleases.set([]);
+    this.releasesShowDone.set(false);
   }
 
   getNodeLabel(nodeId: string): string {
@@ -553,14 +673,28 @@ export class TopologyGraphPageComponent {
     this.detailLoading.set(true);
 
     this.layoutService.getTargets(environmentId).pipe(take(1), catchError(() => of([]))).subscribe({
-      next: (targets) => {
-        this.detailTargets.set(targets);
-        this.detailLoading.set(false);
-      },
+      next: (targets) => this.detailTargets.set(targets),
     });
 
     this.layoutService.getHosts(environmentId).pipe(take(1), catchError(() => of([]))).subscribe({
       next: (hosts) => this.detailHosts.set(hosts),
     });
+
+    const params = new HttpParams()
+      .set('environment', environmentId)
+      .set('limit', '20');
+    this.http
+      .get<PlatformListResponse<ReleaseActivity>>('/api/v2/releases/activity', { params })
+      .pipe(
+        take(1),
+        map((r) => r?.items ?? []),
+        catchError(() => of([])),
+      )
+      .subscribe({
+        next: (releases) => {
+          this.detailReleases.set(releases);
+          this.detailLoading.set(false);
+        },
+      });
   }
 }