feat: implement user profile retrieval with roles and permissions caching

internal/repositories/permission_repository.go

@@ -0,0 +1,29 @@
+package repositories
+
+import (
+	"context"
+	"wm-backend/internal/models"
+	db "wm-backend/sqlc_gen"
+
+	"github.com/google/uuid"
+)
+
+// GetPermissionsByUserID retrieves all permission names for a given user.
+func GetPermissionsByUserID(ctx context.Context, queries *db.Queries, userID string) ([]models.Permission, error) {
+	uid, err := uuid.Parse(userID)
+	if err != nil {
+		return nil, err
+	}
+	rows, err := queries.GetPermissionsByUserID(ctx, uid)
+	if err != nil {
+		return nil, err
+	}
+	permissions := make([]models.Permission, 0, len(rows))
+	for _, row := range rows {
+		permissions = append(permissions, models.Permission{
+			Name:        row.Name,
+			Description: row.Description.String,
+		})
+	}
+	return permissions, nil
+}