fix: reset tasks and remount screen on workspace change

Reset the tasks array when switching workspaces to prevent stale
task data from persisting. Wrap TasksScreen in a keyed block to
force remounting when the current workspace changes, ensuring a
clean state for each workspace.

Configure line endings to use LF across all files for consistency.

.gitattributes

@@ -0,0 +1 @@
+* text=auto eol=lf

apps/tauri/src/App.svelte

@@ -60,7 +60,9 @@
       {:else if app.screen === "setup"}
         <SetupScreen cancellable={app.hasWorkspace} />
       {:else}
+        {#key app.config?.current_workspace}
           <TasksScreen />
+        {/key}
       {/if}
     </div>
   </div>

apps/tauri/src/lib/screens/TasksScreen.svelte

@@ -25,6 +25,7 @@
     }
   });
 
+
   function openTask(task: Task) {
     taskStack = [task.id];
   }

apps/tauri/src/lib/stores/app.svelte.ts

@@ -133,6 +133,7 @@ async function switchWorkspace(id: string) {
     await invoke("set_current_workspace", { id });
     config = await invoke<AppConfig>("get_config");
     activeListId = null;
+    tasks = [];
     await loadLists();
     const ws = config?.workspaces[id];
     if (ws) invoke("watch_workspace", { path: ws.path }).catch((e) => console.warn("File watcher failed:", e));