Add fleet action dialog with server selection

src/lib/ui/fleet-actions.ts

@@ -0,0 +1,34 @@
+import type { FleetServer } from '../fleet-overview.js';
+import type { RuntimeAction } from '../provisioning.js';
+import { applicableRuntimeActions } from './lifecycle-actions.js';
+
+export const fleetActions = ['restart', 'start', 'stop', 'rebuild', 'destroy'] as const;
+export type FleetAction = RuntimeAction | 'destroy';
+export interface FleetActionFailure { server: string; error: string }
+export interface FleetActionResult {
+    queued: { server: string; deploymentId: string }[];
+    failed: FleetActionFailure[];
+}
+
+export function fleetActionAvailable(server: FleetServer, action: FleetAction, now: number): boolean {
+    return action === 'destroy' || applicableRuntimeActions(server, now).includes(action);
+}
+
+/** Submit only the reviewed selection. Each server keeps its own durable job and result. */
+export async function queueFleetAction(action: FleetAction, servers: readonly string[], request: typeof fetch = fetch): Promise<FleetActionResult> {
+    const result: FleetActionResult = { queued: [], failed: [] };
+    for (const server of new Set(servers)) {
+        try {
+            const response = action === 'destroy'
+                ? await request(`/api/servers/${encodeURIComponent(server)}`, { method: 'DELETE' })
+                : await request('/api/provisioning', { method: 'POST', headers: { 'Content-Type': 'application/json' }, body: JSON.stringify({ server, action }) });
+            const body = await response.json();
+            if (!response.ok || !body.deploymentId) {
+                result.failed.push({ server, error: body.error ?? 'Could not queue this operation.' });
+            } else result.queued.push({ server, deploymentId: body.deploymentId });
+        } catch {
+            result.failed.push({ server, error: 'Could not confirm whether the request was queued. Check Provisioning before trying again.' });
+        }
+    }
+    return result;
+}