feat: show local Docker images on project detail page

- Add GET /api/projects/{id}/images endpoint returning local images matching the project
- Add ListImagesByRef with tag, size, and created timestamp to Docker client
- Display images table on project page with tag, ID (truncated), size (MB), and created date
- Only shown when Docker is available and images exist locally

web/src/lib/api.ts

@@ -9,6 +9,7 @@ import type {
 	EventLogStats,
 	InspectResult,
 	Instance,
+	LocalImage,
 	NpmCertificate,
 	NpmAccessList,
 	ProxyRoute,
@@ -278,6 +279,10 @@ export function listProxyRoutes(): Promise<ProxyRoute[]> {
 
 // ── Docker Management ──────────────────────────────────────────────
 
+export function listProjectImages(projectId: string): Promise<LocalImage[]> {
+	return get<LocalImage[]>(`/api/projects/${projectId}/images`);
+}
+
 export function pruneImages(): Promise<{ images_removed: number; space_reclaimed_mb: number }> {
 	return post<{ images_removed: number; space_reclaimed_mb: number }>('/api/docker/prune-images');
 }