feat(auth): extend LoginResponse with username + mustChangePassword + ultimoLogin [UDT-008]

src/api/SIGCM2.Application/Common/PagedResult.cs

@@ -0,0 +1,9 @@
+namespace SIGCM2.Application.Common;
+
+/// <summary>Generic paged result for list queries.</summary>
+public sealed record PagedResult<T>(
+    IReadOnlyList<T> Items,
+    int Page,
+    int PageSize,
+    int Total
+);

src/api/SIGCM2.Application/Common/UpdateUsuarioFields.cs

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+namespace SIGCM2.Application.Common;
+
+/// <summary>Mutable fields for updating a usuario profile. Username and PasswordHash are immutable.</summary>
+public sealed record UpdateUsuarioFields(
+    string Nombre,
+    string Apellido,
+    string? Email,
+    string Rol,
+    bool Activo
+);

src/api/SIGCM2.Application/Common/UsuarioListItem.cs

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+namespace SIGCM2.Application.Common;
+
+/// <summary>Light projection of a usuario for list views.</summary>
+public sealed record UsuarioListItem(
+    int Id,
+    string Username,
+    string Nombre,
+    string Apellido,
+    string? Email,
+    string Rol,
+    bool Activo,
+    DateTime? UltimoLogin,
+    DateTime? FechaModificacion
+);

src/api/SIGCM2.Application/Common/UsuariosQuery.cs

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+namespace SIGCM2.Application.Common;
+
+/// <summary>Query parameters for listing usuarios with optional filters and paging.</summary>
+public sealed record UsuariosQuery(
+    int Page,
+    int PageSize,
+    string? Rol,
+    bool? Activo,
+    string? Search
+);