feat(i18n): Add Polish translations for task management components and update search placeholder

src/lib/i18n.js

@@ -211,7 +211,7 @@ const translations = {
       status: "Status",
       project: "Projekt",
       template: "Szablon",
-      searchPlaceholder: "Szukaj zadań...",
+      searchPlaceholder: "Szukaj zadań, projektów, miast lub adresów...",
       noTasks: "Brak zadań",
       noTasksMessage: "Brak zadań przypisanych do tego projektu.",
       addTaskMessage: "Dodaj zadanie powyżej, aby rozpocząć.",
@@ -596,7 +596,7 @@ const translations = {
       status: "Status",
       project: "Project",
       template: "Template",
-      searchPlaceholder: "Search tasks...",
+      searchPlaceholder: "Search tasks, projects, city, or address...",
       noTasks: "No tasks",
       noTasksMessage: "No tasks assigned to this project yet.",
       addTaskMessage: "Add a task above to get started.",