feat: add backup monitoring API client

frontend/src/api/backups.ts

@@ -0,0 +1,63 @@
+import {
+    BackupAlert,
+    BackupDashboardSummary,
+    BackupJob,
+    BackupRun,
+} from "../types/backups";
+
+const API_BASE = "/api";
+
+export async function fetchBackupJobs(): Promise<BackupJob[]> {
+    const res = await fetch(`${API_BASE}/backups/jobs`);
+    if (!res.ok) throw new Error("Failed to fetch backup jobs");
+    return res.json();
+}
+
+export async function fetchBackupJob(jobId: string): Promise<{ job: BackupJob; runs: BackupRun[] }> {
+    const res = await fetch(`${API_BASE}/backups/jobs/${jobId}`);
+    if (!res.ok) throw new Error("Failed to fetch backup job");
+    return res.json();
+}
+
+export async function fetchBackupRuns(jobId?: string, status?: string): Promise<BackupRun[]> {
+    const params = new URLSearchParams();
+    if (jobId) params.append("job_id", jobId);
+    if (status) params.append("status", status);
+    const res = await fetch(`${API_BASE}/backups/runs?${params}`);
+    if (!res.ok) throw new Error("Failed to fetch backup runs");
+    return res.json();
+}
+
+export async function fetchBackupRun(runId: string): Promise<BackupRun> {
+    const res = await fetch(`${API_BASE}/backups/runs/${runId}`);
+    if (!res.ok) throw new Error("Failed to fetch backup run");
+    return res.json();
+}
+
+export async function fetchBackupAlerts(
+    jobId?: string,
+    acknowledged?: boolean,
+    severity?: string
+): Promise<BackupAlert[]> {
+    const params = new URLSearchParams();
+    if (jobId) params.append("job_id", jobId);
+    if (acknowledged !== undefined) params.append("acknowledged", String(acknowledged));
+    if (severity) params.append("severity", severity);
+    const res = await fetch(`${API_BASE}/backups/alerts?${params}`);
+    if (!res.ok) throw new Error("Failed to fetch backup alerts");
+    return res.json();
+}
+
+export async function acknowledgeBackupAlert(alertId: string): Promise<BackupAlert> {
+    const res = await fetch(`${API_BASE}/backups/alerts/${alertId}/acknowledge`, {
+        method: "POST",
+    });
+    if (!res.ok) throw new Error("Failed to acknowledge alert");
+    return res.json();
+}
+
+export async function fetchBackupDashboard(): Promise<BackupDashboardSummary> {
+    const res = await fetch(`${API_BASE}/dashboard/backups`);
+    if (!res.ok) throw new Error("Failed to fetch backup dashboard");
+    return res.json();
+}