chore: 补全 Apple Sign-In 迁移 + 调低开发环境日志级别

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

backend/src/Health.Infrastructure/Data/Migrations/20260710052811_AddAppleSignIn.cs

@@ -0,0 +1,56 @@
+using Microsoft.EntityFrameworkCore.Migrations;
+
+#nullable disable
+
+namespace Health.Infrastructure.Data.Migrations
+{
+    /// <inheritdoc />
+    public partial class AddAppleSignIn : Migration
+    {
+        /// <inheritdoc />
+        protected override void Up(MigrationBuilder migrationBuilder)
+        {
+            migrationBuilder.AlterColumn<string>(
+                name: "Phone",
+                table: "Users",
+                type: "text",
+                nullable: true,
+                oldClrType: typeof(string),
+                oldType: "text");
+
+            migrationBuilder.AddColumn<string>(
+                name: "AppleUserId",
+                table: "Users",
+                type: "text",
+                nullable: true);
+
+            migrationBuilder.CreateIndex(
+                name: "IX_Users_AppleUserId",
+                table: "Users",
+                column: "AppleUserId",
+                unique: true);
+        }
+
+        /// <inheritdoc />
+        protected override void Down(MigrationBuilder migrationBuilder)
+        {
+            migrationBuilder.DropIndex(
+                name: "IX_Users_AppleUserId",
+                table: "Users");
+
+            migrationBuilder.DropColumn(
+                name: "AppleUserId",
+                table: "Users");
+
+            migrationBuilder.AlterColumn<string>(
+                name: "Phone",
+                table: "Users",
+                type: "text",
+                nullable: false,
+                defaultValue: "",
+                oldClrType: typeof(string),
+                oldType: "text",
+                oldNullable: true);
+        }
+    }
+}