feat: add Member/FamilyUnit DbSets, audit interceptor registration, EF migration

Registers AuditSaveChangesInterceptor in DI and wires it into AppDbContext.
Adds Members and FamilyUnits DbSets with full column/index configuration and
applies the AddMemberAndFamilyUnit migration to the ChurchCRM database.

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

API/ROLAC.API/Data/AppDbContext.cs

@@ -9,43 +9,85 @@ public class AppDbContext : IdentityDbContext<AppUser, AppRole, string>
     public AppDbContext(DbContextOptions<AppDbContext> options) : base(options) { }
 
     public DbSet<RefreshToken> RefreshTokens => Set<RefreshToken>();
+    public DbSet<Member>       Members       => Set<Member>();
+    public DbSet<FamilyUnit>   FamilyUnits   => Set<FamilyUnit>();
 
     protected override void OnModelCreating(ModelBuilder builder)
     {
         base.OnModelCreating(builder);
 
+        // ── RefreshToken (unchanged) ────────────────────────────────────────
         builder.Entity<RefreshToken>(entity =>
         {
             entity.HasKey(e => e.Id);
-
-            // Unique index on hash — enables fast lookup and prevents duplicate tokens
             entity.HasIndex(e => e.TokenHash).IsUnique();
-
             entity.Property(e => e.TokenHash).HasMaxLength(64).IsRequired();
             entity.Property(e => e.UserId).HasMaxLength(450).IsRequired();
             entity.Property(e => e.DeviceInfo).HasMaxLength(200);
             entity.Property(e => e.IpAddress).HasMaxLength(45);
             entity.Property(e => e.ReplacedByHash).HasMaxLength(64);
-
+            entity.HasOne(e => e.User).WithMany(u => u.RefreshTokens)
-            entity.HasOne(e => e.User)
+                  .HasForeignKey(e => e.UserId).OnDelete(DeleteBehavior.Cascade);
-                  .WithMany(u => u.RefreshTokens)
-                  .HasForeignKey(e => e.UserId)
-                  .OnDelete(DeleteBehavior.Cascade);
-
-            // Computed properties are not DB columns
             entity.Ignore(e => e.IsExpired);
             entity.Ignore(e => e.IsRevoked);
             entity.Ignore(e => e.IsActive);
         });
 
+        // ── AppUser (unchanged + new unique index on MemberId) ──────────────
         builder.Entity<AppUser>(entity =>
         {
             entity.Property(e => e.LanguagePreference).HasMaxLength(10).HasDefaultValue("en");
+            // Nullable unique: one member ↔ one user account, but member can have no account
+            entity.HasIndex(e => e.MemberId).IsUnique()
+                  .HasFilter("\"MemberId\" IS NOT NULL");
         });
 
+        // ── AppRole (unchanged) ─────────────────────────────────────────────
         builder.Entity<AppRole>(entity =>
         {
             entity.Property(e => e.Description).HasMaxLength(500);
         });
+
+        // ── FamilyUnit ──────────────────────────────────────────────────────
+        builder.Entity<FamilyUnit>(entity =>
+        {
+            entity.Property(e => e.FamilyName_en).HasMaxLength(200);
+            entity.Property(e => e.FamilyName_zh).HasMaxLength(200);
+        });
+
+        // ── Member ──────────────────────────────────────────────────────────
+        builder.Entity<Member>(entity =>
+        {
+            entity.HasQueryFilter(m => !m.IsDeleted);
+
+            entity.Property(e => e.FirstName_en).HasMaxLength(100).IsRequired();
+            entity.Property(e => e.LastName_en).HasMaxLength(100).IsRequired();
+            entity.Property(e => e.NickName).HasMaxLength(100);
+            entity.Property(e => e.FirstName_zh).HasMaxLength(100);
+            entity.Property(e => e.LastName_zh).HasMaxLength(100);
+            entity.Property(e => e.Gender).HasMaxLength(10);
+            entity.Property(e => e.BaptismChurch).HasMaxLength(200);
+            entity.Property(e => e.Email).HasMaxLength(200);
+            entity.Property(e => e.PhoneCell).HasMaxLength(30);
+            entity.Property(e => e.PhoneHome).HasMaxLength(30);
+            entity.Property(e => e.Address).HasMaxLength(500);
+            entity.Property(e => e.City).HasMaxLength(100);
+            entity.Property(e => e.State).HasMaxLength(50);
+            entity.Property(e => e.ZipCode).HasMaxLength(20);
+            entity.Property(e => e.Country).HasMaxLength(100).HasDefaultValue("USA");
+            entity.Property(e => e.PhotoBlobPath).HasMaxLength(500);
+            entity.Property(e => e.Status).HasMaxLength(20).HasDefaultValue("Member");
+            entity.Property(e => e.LanguagePreference).HasMaxLength(10).HasDefaultValue("en");
+            entity.Property(e => e.CreatedBy).HasMaxLength(450);
+            entity.Property(e => e.UpdatedBy).HasMaxLength(450);
+            entity.Property(e => e.DeletedBy).HasMaxLength(450);
+
+            entity.HasIndex(e => e.Status).HasFilter("\"IsDeleted\" = false");
+            entity.HasIndex(e => e.Email).HasFilter("\"Email\" IS NOT NULL");
+            entity.HasIndex(e => e.FamilyUnitId);
+
+            entity.HasOne(e => e.FamilyUnit).WithMany()
+                  .HasForeignKey(e => e.FamilyUnitId).OnDelete(DeleteBehavior.SetNull);
+        });
     }
 }

API/ROLAC.API/Migrations/20260527205155_AddMemberAndFamilyUnit.Designer.cs

@@ -0,0 +1,562 @@
+// <auto-generated />
+using System;
+using Microsoft.EntityFrameworkCore;
+using Microsoft.EntityFrameworkCore.Infrastructure;
+using Microsoft.EntityFrameworkCore.Migrations;
+using Microsoft.EntityFrameworkCore.Storage.ValueConversion;
+using Npgsql.EntityFrameworkCore.PostgreSQL.Metadata;
+using ROLAC.API.Data;
+
+#nullable disable
+
+namespace ROLAC.API.Migrations
+{
+    [DbContext(typeof(AppDbContext))]
+    [Migration("20260527205155_AddMemberAndFamilyUnit")]
+    partial class AddMemberAndFamilyUnit
+    {
+        /// <inheritdoc />
+        protected override void BuildTargetModel(ModelBuilder modelBuilder)
+        {
+#pragma warning disable 612, 618
+            modelBuilder
+                .HasAnnotation("ProductVersion", "8.0.11")
+                .HasAnnotation("Relational:MaxIdentifierLength", 63);
+
+            NpgsqlModelBuilderExtensions.UseIdentityByDefaultColumns(modelBuilder);
+
+            modelBuilder.Entity("Microsoft.AspNetCore.Identity.IdentityRoleClaim<string>", b =>
+                {
+                    b.Property<int>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("integer");
+
+                    NpgsqlPropertyBuilderExtensions.UseIdentityByDefaultColumn(b.Property<int>("Id"));
+
+                    b.Property<string>("ClaimType")
+                        .HasColumnType("text");
+
+                    b.Property<string>("ClaimValue")
+                        .HasColumnType("text");
+
+                    b.Property<string>("RoleId")
+                        .IsRequired()
+                        .HasColumnType("text");
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("RoleId");
+
+                    b.ToTable("AspNetRoleClaims", (string)null);
+                });
+
+            modelBuilder.Entity("Microsoft.AspNetCore.Identity.IdentityUserClaim<string>", b =>
+                {
+                    b.Property<int>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("integer");
+
+                    NpgsqlPropertyBuilderExtensions.UseIdentityByDefaultColumn(b.Property<int>("Id"));
+
+                    b.Property<string>("ClaimType")
+                        .HasColumnType("text");
+
+                    b.Property<string>("ClaimValue")
+                        .HasColumnType("text");
+
+                    b.Property<string>("UserId")
+                        .IsRequired()
+                        .HasColumnType("text");
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("UserId");
+
+                    b.ToTable("AspNetUserClaims", (string)null);
+                });
+
+            modelBuilder.Entity("Microsoft.AspNetCore.Identity.IdentityUserLogin<string>", b =>
+                {
+                    b.Property<string>("LoginProvider")
+                        .HasColumnType("text");
+
+                    b.Property<string>("ProviderKey")
+                        .HasColumnType("text");
+
+                    b.Property<string>("ProviderDisplayName")
+                        .HasColumnType("text");
+
+                    b.Property<string>("UserId")
+                        .IsRequired()
+                        .HasColumnType("text");
+
+                    b.HasKey("LoginProvider", "ProviderKey");
+
+                    b.HasIndex("UserId");
+
+                    b.ToTable("AspNetUserLogins", (string)null);
+                });
+
+            modelBuilder.Entity("Microsoft.AspNetCore.Identity.IdentityUserRole<string>", b =>
+                {
+                    b.Property<string>("UserId")
+                        .HasColumnType("text");
+
+                    b.Property<string>("RoleId")
+                        .HasColumnType("text");
+
+                    b.HasKey("UserId", "RoleId");
+
+                    b.HasIndex("RoleId");
+
+                    b.ToTable("AspNetUserRoles", (string)null);
+                });
+
+            modelBuilder.Entity("Microsoft.AspNetCore.Identity.IdentityUserToken<string>", b =>
+                {
+                    b.Property<string>("UserId")
+                        .HasColumnType("text");
+
+                    b.Property<string>("LoginProvider")
+                        .HasColumnType("text");
+
+                    b.Property<string>("Name")
+                        .HasColumnType("text");
+
+                    b.Property<string>("Value")
+                        .HasColumnType("text");
+
+                    b.HasKey("UserId", "LoginProvider", "Name");
+
+                    b.ToTable("AspNetUserTokens", (string)null);
+                });
+
+            modelBuilder.Entity("ROLAC.API.Entities.AppRole", b =>
+                {
+                    b.Property<string>("Id")
+                        .HasColumnType("text");
+
+                    b.Property<string>("ConcurrencyStamp")
+                        .IsConcurrencyToken()
+                        .HasColumnType("text");
+
+                    b.Property<string>("Description")
+                        .HasMaxLength(500)
+                        .HasColumnType("character varying(500)");
+
+                    b.Property<string>("Name")
+                        .HasMaxLength(256)
+                        .HasColumnType("character varying(256)");
+
+                    b.Property<string>("NormalizedName")
+                        .HasMaxLength(256)
+                        .HasColumnType("character varying(256)");
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("NormalizedName")
+                        .IsUnique()
+                        .HasDatabaseName("RoleNameIndex");
+
+                    b.ToTable("AspNetRoles", (string)null);
+                });
+
+            modelBuilder.Entity("ROLAC.API.Entities.AppUser", b =>
+                {
+                    b.Property<string>("Id")
+                        .HasColumnType("text");
+
+                    b.Property<int>("AccessFailedCount")
+                        .HasColumnType("integer");
+
+                    b.Property<string>("ConcurrencyStamp")
+                        .IsConcurrencyToken()
+                        .HasColumnType("text");
+
+                    b.Property<DateTime>("CreatedAt")
+                        .HasColumnType("timestamp with time zone");
+
+                    b.Property<string>("Email")
+                        .HasMaxLength(256)
+                        .HasColumnType("character varying(256)");
+
+                    b.Property<bool>("EmailConfirmed")
+                        .HasColumnType("boolean");
+
+                    b.Property<bool>("IsActive")
+                        .HasColumnType("boolean");
+
+                    b.Property<string>("LanguagePreference")
+                        .IsRequired()
+                        .ValueGeneratedOnAdd()
+                        .HasMaxLength(10)
+                        .HasColumnType("character varying(10)")
+                        .HasDefaultValue("en");
+
+                    b.Property<DateTime?>("LastLoginAt")
+                        .HasColumnType("timestamp with time zone");
+
+                    b.Property<bool>("LockoutEnabled")
+                        .HasColumnType("boolean");
+
+                    b.Property<DateTimeOffset?>("LockoutEnd")
+                        .HasColumnType("timestamp with time zone");
+
+                    b.Property<int?>("MemberId")
+                        .HasColumnType("integer");
+
+                    b.Property<string>("NormalizedEmail")
+                        .HasMaxLength(256)
+                        .HasColumnType("character varying(256)");
+
+                    b.Property<string>("NormalizedUserName")
+                        .HasMaxLength(256)
+                        .HasColumnType("character varying(256)");
+
+                    b.Property<string>("PasswordHash")
+                        .HasColumnType("text");
+
+                    b.Property<string>("PhoneNumber")
+                        .HasColumnType("text");
+
+                    b.Property<bool>("PhoneNumberConfirmed")
+                        .HasColumnType("boolean");
+
+                    b.Property<string>("SecurityStamp")
+                        .HasColumnType("text");
+
+                    b.Property<bool>("TwoFactorEnabled")
+                        .HasColumnType("boolean");
+
+                    b.Property<string>("UserName")
+                        .HasMaxLength(256)
+                        .HasColumnType("character varying(256)");
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("MemberId")
+                        .IsUnique()
+                        .HasFilter("\"MemberId\" IS NOT NULL");
+
+                    b.HasIndex("NormalizedEmail")
+                        .HasDatabaseName("EmailIndex");
+
+                    b.HasIndex("NormalizedUserName")
+                        .IsUnique()
+                        .HasDatabaseName("UserNameIndex");
+
+                    b.ToTable("AspNetUsers", (string)null);
+                });
+
+            modelBuilder.Entity("ROLAC.API.Entities.FamilyUnit", b =>
+                {
+                    b.Property<int>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("integer");
+
+                    NpgsqlPropertyBuilderExtensions.UseIdentityByDefaultColumn(b.Property<int>("Id"));
+
+                    b.Property<DateTimeOffset>("CreatedAt")
+                        .HasColumnType("timestamp with time zone");
+
+                    b.Property<string>("CreatedBy")
+                        .IsRequired()
+                        .HasColumnType("text");
+
+                    b.Property<string>("FamilyName_en")
+                        .HasMaxLength(200)
+                        .HasColumnType("character varying(200)");
+
+                    b.Property<string>("FamilyName_zh")
+                        .HasMaxLength(200)
+                        .HasColumnType("character varying(200)");
+
+                    b.Property<string>("Notes")
+                        .HasColumnType("text");
+
+                    b.Property<DateTimeOffset>("UpdatedAt")
+                        .HasColumnType("timestamp with time zone");
+
+                    b.Property<string>("UpdatedBy")
+                        .IsRequired()
+                        .HasColumnType("text");
+
+                    b.HasKey("Id");
+
+                    b.ToTable("FamilyUnits");
+                });
+
+            modelBuilder.Entity("ROLAC.API.Entities.Member", b =>
+                {
+                    b.Property<int>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("integer");
+
+                    NpgsqlPropertyBuilderExtensions.UseIdentityByDefaultColumn(b.Property<int>("Id"));
+
+                    b.Property<string>("Address")
+                        .HasMaxLength(500)
+                        .HasColumnType("character varying(500)");
+
+                    b.Property<string>("BaptismChurch")
+                        .HasMaxLength(200)
+                        .HasColumnType("character varying(200)");
+
+                    b.Property<DateOnly?>("BaptismDate")
+                        .HasColumnType("date");
+
+                    b.Property<string>("City")
+                        .HasMaxLength(100)
+                        .HasColumnType("character varying(100)");
+
+                    b.Property<string>("Country")
+                        .IsRequired()
+                        .ValueGeneratedOnAdd()
+                        .HasMaxLength(100)
+                        .HasColumnType("character varying(100)")
+                        .HasDefaultValue("USA");
+
+                    b.Property<DateTimeOffset>("CreatedAt")
+                        .HasColumnType("timestamp with time zone");
+
+                    b.Property<string>("CreatedBy")
+                        .IsRequired()
+                        .HasMaxLength(450)
+                        .HasColumnType("character varying(450)");
+
+                    b.Property<DateOnly?>("DateOfBirth")
+                        .HasColumnType("date");
+
+                    b.Property<DateTimeOffset?>("DeletedAt")
+                        .HasColumnType("timestamp with time zone");
+
+                    b.Property<string>("DeletedBy")
+                        .HasMaxLength(450)
+                        .HasColumnType("character varying(450)");
+
+                    b.Property<string>("Email")
+                        .HasMaxLength(200)
+                        .HasColumnType("character varying(200)");
+
+                    b.Property<int?>("FamilyUnitId")
+                        .HasColumnType("integer");
+
+                    b.Property<string>("FirstName_en")
+                        .IsRequired()
+                        .HasMaxLength(100)
+                        .HasColumnType("character varying(100)");
+
+                    b.Property<string>("FirstName_zh")
+                        .HasMaxLength(100)
+                        .HasColumnType("character varying(100)");
+
+                    b.Property<string>("Gender")
+                        .HasMaxLength(10)
+                        .HasColumnType("character varying(10)");
+
+                    b.Property<bool>("IsDeleted")
+                        .HasColumnType("boolean");
+
+                    b.Property<DateOnly?>("JoinDate")
+                        .HasColumnType("date");
+
+                    b.Property<string>("LanguagePreference")
+                        .IsRequired()
+                        .ValueGeneratedOnAdd()
+                        .HasMaxLength(10)
+                        .HasColumnType("character varying(10)")
+                        .HasDefaultValue("en");
+
+                    b.Property<string>("LastName_en")
+                        .IsRequired()
+                        .HasMaxLength(100)
+                        .HasColumnType("character varying(100)");
+
+                    b.Property<string>("LastName_zh")
+                        .HasMaxLength(100)
+                        .HasColumnType("character varying(100)");
+
+                    b.Property<string>("NickName")
+                        .HasMaxLength(100)
+                        .HasColumnType("character varying(100)");
+
+                    b.Property<string>("Notes")
+                        .HasColumnType("text");
+
+                    b.Property<string>("PhoneCell")
+                        .HasMaxLength(30)
+                        .HasColumnType("character varying(30)");
+
+                    b.Property<string>("PhoneHome")
+                        .HasMaxLength(30)
+                        .HasColumnType("character varying(30)");
+
+                    b.Property<string>("PhotoBlobPath")
+                        .HasMaxLength(500)
+                        .HasColumnType("character varying(500)");
+
+                    b.Property<string>("State")
+                        .HasMaxLength(50)
+                        .HasColumnType("character varying(50)");
+
+                    b.Property<string>("Status")
+                        .IsRequired()
+                        .ValueGeneratedOnAdd()
+                        .HasMaxLength(20)
+                        .HasColumnType("character varying(20)")
+                        .HasDefaultValue("Member");
+
+                    b.Property<DateTimeOffset>("UpdatedAt")
+                        .HasColumnType("timestamp with time zone");
+
+                    b.Property<string>("UpdatedBy")
+                        .IsRequired()
+                        .HasMaxLength(450)
+                        .HasColumnType("character varying(450)");
+
+                    b.Property<string>("ZipCode")
+                        .HasMaxLength(20)
+                        .HasColumnType("character varying(20)");
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("Email")
+                        .HasFilter("\"Email\" IS NOT NULL");
+
+                    b.HasIndex("FamilyUnitId");
+
+                    b.HasIndex("Status")
+                        .HasFilter("\"IsDeleted\" = false");
+
+                    b.ToTable("Members");
+                });
+
+            modelBuilder.Entity("ROLAC.API.Entities.RefreshToken", b =>
+                {
+                    b.Property<int>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("integer");
+
+                    NpgsqlPropertyBuilderExtensions.UseIdentityByDefaultColumn(b.Property<int>("Id"));
+
+                    b.Property<DateTime>("CreatedAt")
+                        .HasColumnType("timestamp with time zone");
+
+                    b.Property<string>("DeviceInfo")
+                        .HasMaxLength(200)
+                        .HasColumnType("character varying(200)");
+
+                    b.Property<DateTime>("ExpiresAt")
+                        .HasColumnType("timestamp with time zone");
+
+                    b.Property<string>("IpAddress")
+                        .HasMaxLength(45)
+                        .HasColumnType("character varying(45)");
+
+                    b.Property<string>("ReplacedByHash")
+                        .HasMaxLength(64)
+                        .HasColumnType("character varying(64)");
+
+                    b.Property<DateTime?>("RevokedAt")
+                        .HasColumnType("timestamp with time zone");
+
+                    b.Property<string>("TokenHash")
+                        .IsRequired()
+                        .HasMaxLength(64)
+                        .HasColumnType("character varying(64)");
+
+                    b.Property<string>("UserId")
+                        .IsRequired()
+                        .HasMaxLength(450)
+                        .HasColumnType("character varying(450)");
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("TokenHash")
+                        .IsUnique();
+
+                    b.HasIndex("UserId");
+
+                    b.ToTable("RefreshTokens");
+                });
+
+            modelBuilder.Entity("Microsoft.AspNetCore.Identity.IdentityRoleClaim<string>", b =>
+                {
+                    b.HasOne("ROLAC.API.Entities.AppRole", null)
+                        .WithMany()
+                        .HasForeignKey("RoleId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+                });
+
+            modelBuilder.Entity("Microsoft.AspNetCore.Identity.IdentityUserClaim<string>", b =>
+                {
+                    b.HasOne("ROLAC.API.Entities.AppUser", null)
+                        .WithMany()
+                        .HasForeignKey("UserId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+                });
+
+            modelBuilder.Entity("Microsoft.AspNetCore.Identity.IdentityUserLogin<string>", b =>
+                {
+                    b.HasOne("ROLAC.API.Entities.AppUser", null)
+                        .WithMany()
+                        .HasForeignKey("UserId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+                });
+
+            modelBuilder.Entity("Microsoft.AspNetCore.Identity.IdentityUserRole<string>", b =>
+                {
+                    b.HasOne("ROLAC.API.Entities.AppRole", null)
+                        .WithMany()
+                        .HasForeignKey("RoleId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+
+                    b.HasOne("ROLAC.API.Entities.AppUser", null)
+                        .WithMany()
+                        .HasForeignKey("UserId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+                });
+
+            modelBuilder.Entity("Microsoft.AspNetCore.Identity.IdentityUserToken<string>", b =>
+                {
+                    b.HasOne("ROLAC.API.Entities.AppUser", null)
+                        .WithMany()
+                        .HasForeignKey("UserId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+                });
+
+            modelBuilder.Entity("ROLAC.API.Entities.Member", b =>
+                {
+                    b.HasOne("ROLAC.API.Entities.FamilyUnit", "FamilyUnit")
+                        .WithMany()
+                        .HasForeignKey("FamilyUnitId")
+                        .OnDelete(DeleteBehavior.SetNull);
+
+                    b.Navigation("FamilyUnit");
+                });
+
+            modelBuilder.Entity("ROLAC.API.Entities.RefreshToken", b =>
+                {
+                    b.HasOne("ROLAC.API.Entities.AppUser", "User")
+                        .WithMany("RefreshTokens")
+                        .HasForeignKey("UserId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+
+                    b.Navigation("User");
+                });
+
+            modelBuilder.Entity("ROLAC.API.Entities.AppUser", b =>
+                {
+                    b.Navigation("RefreshTokens");
+                });
+#pragma warning restore 612, 618
+        }
+    }
+}

API/ROLAC.API/Migrations/20260527205155_AddMemberAndFamilyUnit.cs

@@ -0,0 +1,121 @@
+using System;
+using Microsoft.EntityFrameworkCore.Migrations;
+using Npgsql.EntityFrameworkCore.PostgreSQL.Metadata;
+
+#nullable disable
+
+namespace ROLAC.API.Migrations
+{
+    /// <inheritdoc />
+    public partial class AddMemberAndFamilyUnit : Migration
+    {
+        /// <inheritdoc />
+        protected override void Up(MigrationBuilder migrationBuilder)
+        {
+            migrationBuilder.CreateTable(
+                name: "FamilyUnits",
+                columns: table => new
+                {
+                    Id = table.Column<int>(type: "integer", nullable: false)
+                        .Annotation("Npgsql:ValueGenerationStrategy", NpgsqlValueGenerationStrategy.IdentityByDefaultColumn),
+                    FamilyName_en = table.Column<string>(type: "character varying(200)", maxLength: 200, nullable: true),
+                    FamilyName_zh = table.Column<string>(type: "character varying(200)", maxLength: 200, nullable: true),
+                    Notes = table.Column<string>(type: "text", nullable: true),
+                    CreatedAt = table.Column<DateTimeOffset>(type: "timestamp with time zone", nullable: false),
+                    CreatedBy = table.Column<string>(type: "text", nullable: false),
+                    UpdatedAt = table.Column<DateTimeOffset>(type: "timestamp with time zone", nullable: false),
+                    UpdatedBy = table.Column<string>(type: "text", nullable: false)
+                },
+                constraints: table =>
+                {
+                    table.PrimaryKey("PK_FamilyUnits", x => x.Id);
+                });
+
+            migrationBuilder.CreateTable(
+                name: "Members",
+                columns: table => new
+                {
+                    Id = table.Column<int>(type: "integer", nullable: false)
+                        .Annotation("Npgsql:ValueGenerationStrategy", NpgsqlValueGenerationStrategy.IdentityByDefaultColumn),
+                    FirstName_en = table.Column<string>(type: "character varying(100)", maxLength: 100, nullable: false),
+                    LastName_en = table.Column<string>(type: "character varying(100)", maxLength: 100, nullable: false),
+                    NickName = table.Column<string>(type: "character varying(100)", maxLength: 100, nullable: true),
+                    FirstName_zh = table.Column<string>(type: "character varying(100)", maxLength: 100, nullable: true),
+                    LastName_zh = table.Column<string>(type: "character varying(100)", maxLength: 100, nullable: true),
+                    Gender = table.Column<string>(type: "character varying(10)", maxLength: 10, nullable: true),
+                    DateOfBirth = table.Column<DateOnly>(type: "date", nullable: true),
+                    BaptismDate = table.Column<DateOnly>(type: "date", nullable: true),
+                    BaptismChurch = table.Column<string>(type: "character varying(200)", maxLength: 200, nullable: true),
+                    Email = table.Column<string>(type: "character varying(200)", maxLength: 200, nullable: true),
+                    PhoneCell = table.Column<string>(type: "character varying(30)", maxLength: 30, nullable: true),
+                    PhoneHome = table.Column<string>(type: "character varying(30)", maxLength: 30, nullable: true),
+                    Address = table.Column<string>(type: "character varying(500)", maxLength: 500, nullable: true),
+                    City = table.Column<string>(type: "character varying(100)", maxLength: 100, nullable: true),
+                    State = table.Column<string>(type: "character varying(50)", maxLength: 50, nullable: true),
+                    ZipCode = table.Column<string>(type: "character varying(20)", maxLength: 20, nullable: true),
+                    Country = table.Column<string>(type: "character varying(100)", maxLength: 100, nullable: false, defaultValue: "USA"),
+                    PhotoBlobPath = table.Column<string>(type: "character varying(500)", maxLength: 500, nullable: true),
+                    Status = table.Column<string>(type: "character varying(20)", maxLength: 20, nullable: false, defaultValue: "Member"),
+                    LanguagePreference = table.Column<string>(type: "character varying(10)", maxLength: 10, nullable: false, defaultValue: "en"),
+                    JoinDate = table.Column<DateOnly>(type: "date", nullable: true),
+                    Notes = table.Column<string>(type: "text", nullable: true),
+                    FamilyUnitId = table.Column<int>(type: "integer", nullable: true),
+                    CreatedAt = table.Column<DateTimeOffset>(type: "timestamp with time zone", nullable: false),
+                    CreatedBy = table.Column<string>(type: "character varying(450)", maxLength: 450, nullable: false),
+                    UpdatedAt = table.Column<DateTimeOffset>(type: "timestamp with time zone", nullable: false),
+                    UpdatedBy = table.Column<string>(type: "character varying(450)", maxLength: 450, nullable: false),
+                    IsDeleted = table.Column<bool>(type: "boolean", nullable: false),
+                    DeletedAt = table.Column<DateTimeOffset>(type: "timestamp with time zone", nullable: true),
+                    DeletedBy = table.Column<string>(type: "character varying(450)", maxLength: 450, nullable: true)
+                },
+                constraints: table =>
+                {
+                    table.PrimaryKey("PK_Members", x => x.Id);
+                    table.ForeignKey(
+                        name: "FK_Members_FamilyUnits_FamilyUnitId",
+                        column: x => x.FamilyUnitId,
+                        principalTable: "FamilyUnits",
+                        principalColumn: "Id",
+                        onDelete: ReferentialAction.SetNull);
+                });
+
+            migrationBuilder.CreateIndex(
+                name: "IX_AspNetUsers_MemberId",
+                table: "AspNetUsers",
+                column: "MemberId",
+                unique: true,
+                filter: "\"MemberId\" IS NOT NULL");
+
+            migrationBuilder.CreateIndex(
+                name: "IX_Members_Email",
+                table: "Members",
+                column: "Email",
+                filter: "\"Email\" IS NOT NULL");
+
+            migrationBuilder.CreateIndex(
+                name: "IX_Members_FamilyUnitId",
+                table: "Members",
+                column: "FamilyUnitId");
+
+            migrationBuilder.CreateIndex(
+                name: "IX_Members_Status",
+                table: "Members",
+                column: "Status",
+                filter: "\"IsDeleted\" = false");
+        }
+
+        /// <inheritdoc />
+        protected override void Down(MigrationBuilder migrationBuilder)
+        {
+            migrationBuilder.DropTable(
+                name: "Members");
+
+            migrationBuilder.DropTable(
+                name: "FamilyUnits");
+
+            migrationBuilder.DropIndex(
+                name: "IX_AspNetUsers_MemberId",
+                table: "AspNetUsers");
+        }
+    }
+}

API/ROLAC.API/Migrations/AppDbContextModelSnapshot.cs

@@ -231,6 +231,10 @@ namespace ROLAC.API.Migrations
 
                     b.HasKey("Id");
 
+                    b.HasIndex("MemberId")
+                        .IsUnique()
+                        .HasFilter("\"MemberId\" IS NOT NULL");
+
                     b.HasIndex("NormalizedEmail")
                         .HasDatabaseName("EmailIndex");
 
@@ -241,6 +245,189 @@ namespace ROLAC.API.Migrations
                     b.ToTable("AspNetUsers", (string)null);
                 });
 
+            modelBuilder.Entity("ROLAC.API.Entities.FamilyUnit", b =>
+                {
+                    b.Property<int>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("integer");
+
+                    NpgsqlPropertyBuilderExtensions.UseIdentityByDefaultColumn(b.Property<int>("Id"));
+
+                    b.Property<DateTimeOffset>("CreatedAt")
+                        .HasColumnType("timestamp with time zone");
+
+                    b.Property<string>("CreatedBy")
+                        .IsRequired()
+                        .HasColumnType("text");
+
+                    b.Property<string>("FamilyName_en")
+                        .HasMaxLength(200)
+                        .HasColumnType("character varying(200)");
+
+                    b.Property<string>("FamilyName_zh")
+                        .HasMaxLength(200)
+                        .HasColumnType("character varying(200)");
+
+                    b.Property<string>("Notes")
+                        .HasColumnType("text");
+
+                    b.Property<DateTimeOffset>("UpdatedAt")
+                        .HasColumnType("timestamp with time zone");
+
+                    b.Property<string>("UpdatedBy")
+                        .IsRequired()
+                        .HasColumnType("text");
+
+                    b.HasKey("Id");
+
+                    b.ToTable("FamilyUnits");
+                });
+
+            modelBuilder.Entity("ROLAC.API.Entities.Member", b =>
+                {
+                    b.Property<int>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("integer");
+
+                    NpgsqlPropertyBuilderExtensions.UseIdentityByDefaultColumn(b.Property<int>("Id"));
+
+                    b.Property<string>("Address")
+                        .HasMaxLength(500)
+                        .HasColumnType("character varying(500)");
+
+                    b.Property<string>("BaptismChurch")
+                        .HasMaxLength(200)
+                        .HasColumnType("character varying(200)");
+
+                    b.Property<DateOnly?>("BaptismDate")
+                        .HasColumnType("date");
+
+                    b.Property<string>("City")
+                        .HasMaxLength(100)
+                        .HasColumnType("character varying(100)");
+
+                    b.Property<string>("Country")
+                        .IsRequired()
+                        .ValueGeneratedOnAdd()
+                        .HasMaxLength(100)
+                        .HasColumnType("character varying(100)")
+                        .HasDefaultValue("USA");
+
+                    b.Property<DateTimeOffset>("CreatedAt")
+                        .HasColumnType("timestamp with time zone");
+
+                    b.Property<string>("CreatedBy")
+                        .IsRequired()
+                        .HasMaxLength(450)
+                        .HasColumnType("character varying(450)");
+
+                    b.Property<DateOnly?>("DateOfBirth")
+                        .HasColumnType("date");
+
+                    b.Property<DateTimeOffset?>("DeletedAt")
+                        .HasColumnType("timestamp with time zone");
+
+                    b.Property<string>("DeletedBy")
+                        .HasMaxLength(450)
+                        .HasColumnType("character varying(450)");
+
+                    b.Property<string>("Email")
+                        .HasMaxLength(200)
+                        .HasColumnType("character varying(200)");
+
+                    b.Property<int?>("FamilyUnitId")
+                        .HasColumnType("integer");
+
+                    b.Property<string>("FirstName_en")
+                        .IsRequired()
+                        .HasMaxLength(100)
+                        .HasColumnType("character varying(100)");
+
+                    b.Property<string>("FirstName_zh")
+                        .HasMaxLength(100)
+                        .HasColumnType("character varying(100)");
+
+                    b.Property<string>("Gender")
+                        .HasMaxLength(10)
+                        .HasColumnType("character varying(10)");
+
+                    b.Property<bool>("IsDeleted")
+                        .HasColumnType("boolean");
+
+                    b.Property<DateOnly?>("JoinDate")
+                        .HasColumnType("date");
+
+                    b.Property<string>("LanguagePreference")
+                        .IsRequired()
+                        .ValueGeneratedOnAdd()
+                        .HasMaxLength(10)
+                        .HasColumnType("character varying(10)")
+                        .HasDefaultValue("en");
+
+                    b.Property<string>("LastName_en")
+                        .IsRequired()
+                        .HasMaxLength(100)
+                        .HasColumnType("character varying(100)");
+
+                    b.Property<string>("LastName_zh")
+                        .HasMaxLength(100)
+                        .HasColumnType("character varying(100)");
+
+                    b.Property<string>("NickName")
+                        .HasMaxLength(100)
+                        .HasColumnType("character varying(100)");
+
+                    b.Property<string>("Notes")
+                        .HasColumnType("text");
+
+                    b.Property<string>("PhoneCell")
+                        .HasMaxLength(30)
+                        .HasColumnType("character varying(30)");
+
+                    b.Property<string>("PhoneHome")
+                        .HasMaxLength(30)
+                        .HasColumnType("character varying(30)");
+
+                    b.Property<string>("PhotoBlobPath")
+                        .HasMaxLength(500)
+                        .HasColumnType("character varying(500)");
+
+                    b.Property<string>("State")
+                        .HasMaxLength(50)
+                        .HasColumnType("character varying(50)");
+
+                    b.Property<string>("Status")
+                        .IsRequired()
+                        .ValueGeneratedOnAdd()
+                        .HasMaxLength(20)
+                        .HasColumnType("character varying(20)")
+                        .HasDefaultValue("Member");
+
+                    b.Property<DateTimeOffset>("UpdatedAt")
+                        .HasColumnType("timestamp with time zone");
+
+                    b.Property<string>("UpdatedBy")
+                        .IsRequired()
+                        .HasMaxLength(450)
+                        .HasColumnType("character varying(450)");
+
+                    b.Property<string>("ZipCode")
+                        .HasMaxLength(20)
+                        .HasColumnType("character varying(20)");
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("Email")
+                        .HasFilter("\"Email\" IS NOT NULL");
+
+                    b.HasIndex("FamilyUnitId");
+
+                    b.HasIndex("Status")
+                        .HasFilter("\"IsDeleted\" = false");
+
+                    b.ToTable("Members");
+                });
+
             modelBuilder.Entity("ROLAC.API.Entities.RefreshToken", b =>
                 {
                     b.Property<int>("Id")
@@ -341,6 +528,16 @@ namespace ROLAC.API.Migrations
                         .IsRequired();
                 });
 
+            modelBuilder.Entity("ROLAC.API.Entities.Member", b =>
+                {
+                    b.HasOne("ROLAC.API.Entities.FamilyUnit", "FamilyUnit")
+                        .WithMany()
+                        .HasForeignKey("FamilyUnitId")
+                        .OnDelete(DeleteBehavior.SetNull);
+
+                    b.Navigation("FamilyUnit");
+                });
+
             modelBuilder.Entity("ROLAC.API.Entities.RefreshToken", b =>
                 {
                     b.HasOne("ROLAC.API.Entities.AppUser", "User")

API/ROLAC.API/Program.cs

@@ -4,6 +4,7 @@ using Microsoft.AspNetCore.Identity;
 using Microsoft.EntityFrameworkCore;
 using Microsoft.IdentityModel.Tokens;
 using ROLAC.API.Data;
+using ROLAC.API.Data.Interceptors;
 using ROLAC.API.Entities;
 using ROLAC.API.Services;
 
@@ -13,8 +14,11 @@ var config  = builder.Configuration;
 // ---------------------------------------------------------------------------
 // Database
 // ---------------------------------------------------------------------------
-builder.Services.AddDbContext<AppDbContext>(opt =>
+builder.Services.AddHttpContextAccessor();
-    opt.UseNpgsql(config.GetConnectionString("DefaultConnection")));
+builder.Services.AddScoped<AuditSaveChangesInterceptor>();
+builder.Services.AddDbContext<AppDbContext>((sp, opt) =>
+    opt.UseNpgsql(config.GetConnectionString("DefaultConnection"))
+       .AddInterceptors(sp.GetRequiredService<AuditSaveChangesInterceptor>()));
 
 // ---------------------------------------------------------------------------
 // Identity