Move host operation history to a paginated Hosts page

src/lib/server/hosts/index.ts

@@ -6,7 +6,7 @@ import { db } from '../db/index.js';
 import { ensureHostSchema } from './schema.js';
 import { recordInstanceResources, validateInstanceResources } from './calibration.js';
 import { refreshHostAvailability, scheduleAvailabilityRefresh } from './availability.js';
-import type { Host, HostDecommission, HostDeletion, HostInventory, HostMode, HostOperation, HostOperationState } from '../../hosts.js';
+import type { Host, HostDecommission, HostDeletion, HostInventory, HostMode, HostOperation, HostOperationHistoryPage, HostOperationState } from '../../hosts.js';
 
 export const AGENT_PROTOCOL_VERSION = 1;
 export const HEARTBEAT_MAX_AGE_MS = 90_000;
@@ -356,6 +356,22 @@ export function listHostOperations(hostId: string, limit = 100, summary = false)
     return (database().prepare(`SELECT ${columns} FROM ec_host_operations o WHERE o.host_id=? ORDER BY o.created_at DESC,o.rowid DESC LIMIT ?`)
         .all(hostId, Math.min(500, Math.max(1, limit))) as OperationRow[]).map(operationFromRow);
 }
+/** Browse retained history without loading command payloads or credential-bearing results. */
+export function listHostOperationHistory(page = 1): HostOperationHistoryPage {
+    const handle = database();
+    const pageSize = 25;
+    return handle.transaction((): HostOperationHistoryPage => {
+        const { total } = handle.prepare('SELECT COUNT(*) AS total FROM ec_host_operations').get() as { total: number };
+        const totalPages = Math.max(1, Math.ceil(total / pageSize));
+        const currentPage = Math.min(totalPages, Number.isSafeInteger(page) && page > 0 ? page : 1);
+        const operations = handle.prepare(`SELECT o.id,o.host_id AS hostId,h.name AS hostName,o.kind,
+            o.instance_id AS instanceId,o.generation,o.state,o.error,o.created_at AS createdAt,o.updated_at AS updatedAt
+            FROM ec_host_operations o LEFT JOIN ec_hosts h ON h.id=o.host_id AND h.deleted_at IS NULL
+            ORDER BY o.created_at DESC,o.rowid DESC LIMIT ? OFFSET ?`)
+            .all(pageSize, (currentPage - 1) * pageSize) as HostOperationHistoryPage['operations'];
+        return { operations, page: currentPage, pageSize, total, totalPages };
+    })();
+}
 /** Heartbeats can tell an executing create to stop at its next safe command boundary. */
 export function pendingCreationCancellations(hostId: string): string[] {
     return (database().prepare(`SELECT json_extract(payload,'$.createOperationId') AS id FROM ec_host_operations

src/lib/server/hosts/schema.ts

@@ -31,6 +31,8 @@ export function ensureHostSchema(handle: Database.Database): void {
             UNIQUE(host_id, idempotency_key)
         );
         CREATE INDEX IF NOT EXISTS ec_host_operations_queue ON ec_host_operations(host_id, state, created_at);
+        -- Reversing this index also reverses its implicit rowid tie-breaker.
+        CREATE INDEX IF NOT EXISTS ec_host_operations_history ON ec_host_operations(created_at);
         -- Polling checks cancellations and preparation by kind across retained
         -- history. The queue index cannot narrow those lookups beyond host_id,
         -- causing a history scan for every queued command on Node's main thread.