Register notification services and add SMTP/Line config sections

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

API/ROLAC.API/Program.cs

@@ -160,6 +160,18 @@ builder.Services.AddScoped<ROLAC.API.Services.Disbursement.ICheckPrintService,
                            ROLAC.API.Services.Disbursement.CheckPrintService>();
 builder.Services.AddScoped<IMealAttendanceService, MealAttendanceService>();
 
+// ── Notifications (email via SMTP + Line) ──────────────────────────────────
+builder.Services.Configure<ROLAC.API.Services.Notifications.SmtpOptions>(config.GetSection("Smtp"));
+builder.Services.Configure<ROLAC.API.Services.Notifications.LineOptions>(config.GetSection("Line"));
+builder.Services.AddScoped<ROLAC.API.Services.Notifications.ISmtpDispatcher,
+                           ROLAC.API.Services.Notifications.MailKitSmtpDispatcher>();
+builder.Services.AddScoped<ROLAC.API.Services.Notifications.IEmailService,
+                           ROLAC.API.Services.Notifications.EmailService>();
+builder.Services.AddScoped<ROLAC.API.Services.Notifications.ILineNotificationService,
+                           ROLAC.API.Services.Notifications.LineNotificationService>();
+builder.Services.AddHttpClient<ROLAC.API.Services.Notifications.IMessageChannel,
+                               ROLAC.API.Services.Notifications.LineMessageChannel>();
+
 // ---------------------------------------------------------------------------
 // Configurable role-based permissions (RBAC matrix)
 // ---------------------------------------------------------------------------

API/ROLAC.API/appsettings.json

@@ -28,5 +28,18 @@
   },
   "Storage": {
     "LocalRoot": "App_Data/storage"
+  },
+  "Smtp": {
+    "Host": "",
+    "Port": 587,
+    "UseSsl": true,
+    "User": "",
+    "Password": "",
+    "FromAddress": "noreply@rolac.org",
+    "FromName": "River of Life Christian Church"
+  },
+  "Line": {
+    "ChannelAccessToken": "",
+    "ChannelSecret": ""
   }
 }