add church profile.

API/ROLAC.API/Entities/ChurchProfile.cs

@@ -9,6 +9,10 @@ public class ChurchProfile : AuditableEntity, IAuditable
 {
     public int     Id                { get; set; }
     public string  Name              { get; set; } = null!;
+    public string? NameZh            { get; set; }
+    public string? Phone             { get; set; }
+    public string? Email             { get; set; }
+    public string? Website           { get; set; }
     public string? Address           { get; set; }
     public string? City              { get; set; }
     public string? State             { get; set; }

API/ROLAC.API/Entities/NotificationSetting.cs

@@ -0,0 +1,32 @@
+using ROLAC.API.Entities.Base;
+namespace ROLAC.API.Entities;
+
+/// <summary>
+/// Singleton (Id == 1) holding the editable SMTP + Line notification settings. This row — not the
+/// "Smtp"/"Line" appsettings sections — is the runtime source of truth; those sections only seed
+/// this row once on first startup. Read at send time via <c>INotificationSettingsService</c> so
+/// edits apply without restarting the API.
+///
+/// Secrets (<see cref="SmtpPassword"/>, <see cref="LineChannelAccessToken"/>,
+/// <see cref="LineChannelSecret"/>) are stored plaintext and protected by RBAC (the <c>Settings</c>
+/// module / super_admin) per the project decision for this small single-VM internal app.
+/// </summary>
+public class NotificationSetting : AuditableEntity, IAuditable
+{
+    public int    Id          { get; set; }
+
+    // ── Email (SMTP) ─────────────────────────────────────────────────────────
+    public bool   EnableEmail { get; set; }
+    public string SmtpHost    { get; set; } = "";
+    public int    SmtpPort    { get; set; } = 587;
+    public bool   SmtpUseSsl  { get; set; } = true;   // true → STARTTLS
+    public string SmtpUser    { get; set; } = "";
+    public string SmtpPassword { get; set; } = "";
+    public string FromAddress { get; set; } = "";
+    public string FromName    { get; set; } = "";
+
+    // ── Line ─────────────────────────────────────────────────────────────────
+    public bool   EnableLine             { get; set; }
+    public string LineChannelAccessToken { get; set; } = "";
+    public string LineChannelSecret      { get; set; } = "";
+}

API/ROLAC.API/Entities/SiteSetting.cs

@@ -0,0 +1,18 @@
+using ROLAC.API.Entities.Base;
+namespace ROLAC.API.Entities;
+
+/// <summary>
+/// Singleton (Id == 1) holding site-wide presentation and locale settings, edited from the
+/// Church Profile → Site Settings tab (gated by the <c>Settings</c> permission module).
+/// Seeded with sensible defaults on startup.
+/// </summary>
+public class SiteSetting : AuditableEntity, IAuditable
+{
+    public int     Id              { get; set; }
+    public string  SiteTitle       { get; set; } = "";
+    public string? SiteTitleZh     { get; set; }
+    public string  DefaultLanguage { get; set; } = "en";                  // "en" | "zh"
+    public string  TimeZone        { get; set; } = "America/Los_Angeles";
+    public string  DateFormat      { get; set; } = "yyyy-MM-dd";
+    public string  Currency        { get; set; } = "USD";
+}