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.ConfigurationDatabase/MigrationHelper.cs

@@ -0,0 +1,94 @@
+using Microsoft.EntityFrameworkCore;
+using Microsoft.EntityFrameworkCore.Infrastructure;
+using Microsoft.EntityFrameworkCore.Migrations;
+using Microsoft.Extensions.DependencyInjection;
+using Microsoft.Extensions.Logging;
+
+namespace ZB.MOM.WW.ScadaBridge.ConfigurationDatabase;
+
+/// <summary>
+/// Provides environment-aware migration behavior for the ScadaBridge configuration database.
+/// </summary>
+public static class MigrationHelper
+{
+    /// <summary>
+    /// Applies pending migrations (development mode) or validates schema version (production mode).
+    /// </summary>
+    /// <param name="dbContext">The database context to migrate or validate.</param>
+    /// <param name="isDevelopment">When true, auto-applies migrations. When false, validates schema version matches.</param>
+    /// <param name="logger">Optional logger for readiness-wait diagnostics.</param>
+    /// <param name="cancellationToken">Cancellation token.</param>
+    public static async Task ApplyOrValidateMigrationsAsync(
+        ScadaBridgeDbContext dbContext,
+        bool isDevelopment,
+        ILogger? logger = null,
+        CancellationToken cancellationToken = default)
+    {
+        // Wait for the target database to accept connections before invoking MigrateAsync.
+        // On a fresh MSSQL container, user databases recover asynchronously after the server
+        // starts accepting connections — DB_ID(@dbName) returns null until recovery completes.
+        // Without this wait, MigrateAsync sees the database as missing and falls through to
+        // CREATE DATABASE, which fails for non-privileged app logins.
+        await WaitForDatabaseReadyAsync(dbContext, logger, cancellationToken);
+
+        if (isDevelopment)
+        {
+            await dbContext.Database.MigrateAsync(cancellationToken);
+        }
+        else
+        {
+            var pendingMigrations = await dbContext.Database.GetPendingMigrationsAsync(cancellationToken);
+            var pending = pendingMigrations.ToList();
+            if (pending.Count > 0)
+            {
+                throw new InvalidOperationException(
+                    $"Database schema is out of date. {pending.Count} pending migration(s): {string.Join(", ", pending)}. " +
+                    "Apply migrations using 'dotnet ef database update' or the generated SQL scripts before starting in production mode.");
+            }
+        }
+    }
+
+    private static async Task WaitForDatabaseReadyAsync(
+        ScadaBridgeDbContext dbContext,
+        ILogger? logger,
+        CancellationToken cancellationToken)
+    {
+        var timeout = TimeSpan.FromSeconds(60);
+        var pollInterval = TimeSpan.FromSeconds(2);
+        var deadline = DateTimeOffset.UtcNow + timeout;
+        var attempt = 0;
+        Exception? lastException = null;
+
+        while (DateTimeOffset.UtcNow < deadline)
+        {
+            attempt++;
+            try
+            {
+                if (await dbContext.Database.CanConnectAsync(cancellationToken))
+                {
+                    if (attempt > 1)
+                    {
+                        logger?.LogInformation(
+                            "Configuration database ready after {Attempt} attempt(s).", attempt);
+                    }
+                    return;
+                }
+                logger?.LogDebug(
+                    "Configuration database not yet reachable (attempt {Attempt}).", attempt);
+            }
+            catch (Exception ex)
+            {
+                lastException = ex;
+                logger?.LogDebug(ex,
+                    "Configuration database not yet reachable (attempt {Attempt}).", attempt);
+            }
+
+            await Task.Delay(pollInterval, cancellationToken);
+        }
+
+        throw new InvalidOperationException(
+            $"Configuration database not ready after {timeout.TotalSeconds:N0}s ({attempt} attempts). " +
+            "Verify SQL Server is running and the configuration database exists and is attached.",
+            lastException);
+    }
+}