fix(database): qualify RD21 saves against pinned MariaDB 12.2.2

JobTrackerApi/Program.cs

@@ -97,31 +97,7 @@ builder.Services.AddDbContext<JobTrackerContext>((sp, options) =>
     var cfg = sp.GetRequiredService<IConfiguration>();
     var paths = sp.GetRequiredService<AppPaths>();
 
-    var provider = (cfg["Database:Provider"] ?? "sqlite").Trim().ToLowerInvariant();
-    var cs = cfg.GetConnectionString("JobTracker");
-    if (string.IsNullOrWhiteSpace(cs))
-    {
-        cs = $"Data Source={paths.GetDbPath()}";
-        provider = "sqlite";
-    }
-
-    if (provider is "mysql" or "mariadb")
-    {
-        // Avoid ServerVersion.AutoDetect here because it forces an immediate DB connection
-        // during service registration, which can crash the API if MariaDB is temporarily
-        // unavailable or on a different network during deploy startup.
-        options.UseMySql(cs, new MariaDbServerVersion(new Version(11, 0, 0)), mysql =>
-        {
-            mysql.MigrationsAssembly("JobTrackerApi");
-        });
-    }
-    else
-    {
-        options.UseSqlite(cs, sqlite =>
-        {
-            sqlite.MigrationsAssembly("JobTrackerApi");
-        });
-    }
+    DatabaseConfiguration.Configure(options, cfg, paths.GetDbPath());
 
     // We create Identity tables on startup in environments where `dotnet ef` isn't available.
     // That can cause EF to detect "pending model changes" and throw on Migrate(). Ignore it.