refactor: rename ScadaLink → ZB.MOM.WW.ScadaBridge (code + projects + namespaces)

Solution + 23 src projects + 26 test projects renamed; folders, csproj,
namespaces, and ScadaLinkDbContext/ScadaBridgeDbContext class updated.
ActorSystem "scadalink" → "scadabridge", Akka seed-node URLs migrated.
SQL roles/logins, LDAP domains, CLI command name, and CLI config dir
(~/.scadalink → ~/.scadabridge) also renamed.

Build green; 5 Host.Tests fail awaiting SQL login rename in next commit.
Pre-existing StaleTagMonitor timing flakes unchanged.

Rename script committed at tools/rename-to-scadabridge.sh.

src/ZB.MOM.WW.ScadaBridge.Commons/Interfaces/Repositories/INotificationOutboxRepository.cs

@@ -0,0 +1,110 @@
+using ZB.MOM.WW.ScadaBridge.Commons.Entities.Notifications;
+using ZB.MOM.WW.ScadaBridge.Commons.Types.Notifications;
+
+namespace ZB.MOM.WW.ScadaBridge.Commons.Interfaces.Repositories;
+
+/// <summary>
+/// Data access for the central notification outbox — the queue of <see cref="Notification"/>
+/// rows the outbox actor drains, retries, and audits. Distinct from
+/// <see cref="INotificationRepository"/>, which manages notification list configuration.
+/// </summary>
+/// <remarks>
+/// Persistence model: <see cref="InsertIfNotExistsAsync"/> and <see cref="UpdateAsync"/> commit
+/// internally, so each call is its own transaction — suited to the outbox actor committing one
+/// row's status transition at a time. The standalone <see cref="SaveChangesAsync"/> is available
+/// for callers that stage multiple changes and want to flush them together.
+/// </remarks>
+public interface INotificationOutboxRepository
+{
+    /// <summary>
+    /// Inserts <paramref name="n"/> only if no row with the same
+    /// <see cref="Notification.NotificationId"/> exists. Returns <c>true</c> when a new
+    /// row was inserted, <c>false</c> when an existing row was left untouched.
+    /// Commits internally — this call is its own transaction.
+    /// </summary>
+    /// <param name="n">The notification to insert.</param>
+    /// <param name="cancellationToken">Cancellation token.</param>
+    /// <returns>True if inserted, false if already exists.</returns>
+    Task<bool> InsertIfNotExistsAsync(Notification n, CancellationToken cancellationToken = default);
+
+    /// <summary>
+    /// Returns notifications ready for a delivery attempt: <c>Pending</c> rows, plus
+    /// <c>Retrying</c> rows whose <c>NextAttemptAt</c> is at or before <paramref name="now"/>.
+    /// Terminal rows are excluded. Ordered by <c>CreatedAt</c> ascending, capped at
+    /// <paramref name="batchSize"/>.
+    /// </summary>
+    /// <param name="now">The current time for evaluating due retries.</param>
+    /// <param name="batchSize">Maximum number of rows to return.</param>
+    /// <param name="cancellationToken">Cancellation token.</param>
+    /// <returns>A list of notifications ready for delivery.</returns>
+    Task<IReadOnlyList<Notification>> GetDueAsync(DateTimeOffset now, int batchSize, CancellationToken cancellationToken = default);
+
+    /// <summary>Returns the notification with the given id, or <c>null</c>.</summary>
+    /// <param name="notificationId">The notification identifier.</param>
+    /// <param name="cancellationToken">Cancellation token.</param>
+    /// <returns>The notification, or null if not found.</returns>
+    Task<Notification?> GetByIdAsync(string notificationId, CancellationToken cancellationToken = default);
+
+    /// <summary>
+    /// Marks <paramref name="n"/> modified and persists it (status transitions).
+    /// Commits internally — this call is its own transaction.
+    /// </summary>
+    /// <param name="n">The notification to update.</param>
+    /// <param name="cancellationToken">Cancellation token.</param>
+    Task UpdateAsync(Notification n, CancellationToken cancellationToken = default);
+
+    /// <summary>
+    /// Returns a page of notifications matching <paramref name="filter"/>, ordered by
+    /// <c>CreatedAt</c> descending, together with the total matching count.
+    /// </summary>
+    /// <param name="filter">The query filter.</param>
+    /// <param name="pageNumber">The page number (1-based).</param>
+    /// <param name="pageSize">The page size.</param>
+    /// <param name="cancellationToken">Cancellation token.</param>
+    /// <returns>A tuple of rows and total count.</returns>
+    Task<(IReadOnlyList<Notification> Rows, int TotalCount)> QueryAsync(
+        NotificationOutboxFilter filter, int pageNumber, int pageSize, CancellationToken cancellationToken = default);
+
+    /// <summary>
+    /// Bulk-deletes terminal rows (Delivered/Parked/Discarded) whose <c>CreatedAt</c> is
+    /// older than <paramref name="cutoff"/>. Returns the number of rows deleted.
+    /// </summary>
+    /// <param name="cutoff">The cutoff time for deletion.</param>
+    /// <param name="cancellationToken">Cancellation token.</param>
+    /// <returns>The number of rows deleted.</returns>
+    Task<int> DeleteTerminalOlderThanAsync(DateTimeOffset cutoff, CancellationToken cancellationToken = default);
+
+    /// <summary>
+    /// Computes a point-in-time <see cref="NotificationKpiSnapshot"/>. The stuck and
+    /// delivered cutoffs are supplied by the caller; the current time used for
+    /// <c>OldestPendingAge</c> is captured inside the method.
+    /// </summary>
+    /// <param name="stuckCutoff">The time threshold for marking notifications as stuck.</param>
+    /// <param name="deliveredSince">The time threshold for counting delivered notifications.</param>
+    /// <param name="cancellationToken">Cancellation token.</param>
+    /// <returns>A KPI snapshot.</returns>
+    Task<NotificationKpiSnapshot> ComputeKpisAsync(
+        DateTimeOffset stuckCutoff, DateTimeOffset deliveredSince, CancellationToken cancellationToken = default);
+
+    /// <summary>
+    /// Computes a point-in-time <see cref="SiteNotificationKpiSnapshot"/> per source site.
+    /// Sites with no notification rows at all are omitted. The stuck and delivered cutoffs
+    /// are supplied by the caller; the current time used for <c>OldestPendingAge</c> is
+    /// captured inside the method.
+    /// </summary>
+    /// <param name="stuckCutoff">The time threshold for marking notifications as stuck.</param>
+    /// <param name="deliveredSince">The time threshold for counting delivered notifications.</param>
+    /// <param name="cancellationToken">Cancellation token.</param>
+    /// <returns>A list of per-site KPI snapshots.</returns>
+    Task<IReadOnlyList<SiteNotificationKpiSnapshot>> ComputePerSiteKpisAsync(
+        DateTimeOffset stuckCutoff, DateTimeOffset deliveredSince, CancellationToken cancellationToken = default);
+
+    /// <summary>
+    /// Persists pending changes tracked on the underlying context. Use this when staging
+    /// multiple changes for a single commit; the individual mutating methods on this
+    /// interface already commit on their own.
+    /// </summary>
+    /// <param name="cancellationToken">Cancellation token.</param>
+    /// <returns>The number of changes persisted.</returns>
+    Task<int> SaveChangesAsync(CancellationToken cancellationToken = default);
+}