feat: sync status indicators and push/pull mode selection

Add workspace_name and mode params to sync_workspace Tauri command.
After each sync, persist last_sync to WorkspaceConfig and save config.
Frontend gains lastSyncResult and syncMode state; triggerSync reloads
config post-sync and stores the result. SettingsScreen shows a sync
direction selector (Full/Push/Pull) and a last-sync status line.
TasksScreen shows an upload/download count chip after sync completes.

apps/tauri/src-tauri/src/lib.rs

@@ -2,6 +2,8 @@ use std::path::PathBuf;
 use std::sync::Mutex;
 use std::time::Instant;
 
+use chrono::Utc;
+
 use notify_debouncer_mini::{new_debouncer, DebouncedEventKind};
 use serde::{Deserialize, Serialize};
 use tauri::{Emitter, Manager, State};
@@ -422,21 +424,40 @@ async fn test_webdav_connection(
 
 #[tauri::command]
 async fn sync_workspace(
+    workspace_name: String,
     workspace_path: String,
     webdav_url: String,
     username: String,
     password: String,
+    mode: String,
+    state: State<'_, Mutex<AppState>>,
 ) -> Result<SyncResult, String> {
+    let sync_mode = match mode.as_str() {
+        "push" => SyncMode::Push,
+        "pull" => SyncMode::Pull,
+        _ => SyncMode::Full,
+    };
     let result = sync::sync_workspace(
-        &PathBuf::from(workspace_path),
+        &PathBuf::from(&workspace_path),
         &webdav_url,
         &username,
         &password,
-        SyncMode::Full,
+        sync_mode,
         None,
     )
     .await
     .map_err(|e| e.to_string())?;
+
+    // Persist last_sync timestamp to config
+    {
+        let mut s = state.lock().unwrap();
+        if let Some(ws) = s.config.workspaces.get_mut(&workspace_name) {
+            ws.last_sync = Some(Utc::now());
+        }
+        let config_path = AppConfig::get_config_path();
+        s.config.save_to_file(&config_path).map_err(|e| e.to_string())?;
+    }
+
     Ok(result.into())
 }
 

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

@@ -122,13 +122,35 @@
     </div>
 
     {#if app.config?.current_workspace}
+      <div class="mt-3 flex items-center gap-2">
+        <select
+          value={app.syncMode}
+          onchange={(e) => app.setSyncMode((e.target as HTMLSelectElement).value as "full" | "push" | "pull")}
+          class="rounded-lg border border-border-light bg-transparent px-3 py-2 text-sm outline-none focus:border-primary dark:border-border-dark"
+        >
+          <option value="full">Sync both ways</option>
+          <option value="push">Push only</option>
+          <option value="pull">Pull only</option>
+        </select>
         <button
           onclick={() => app.triggerSync()}
           disabled={app.syncing}
-        class="mt-3 w-full rounded-lg bg-primary py-2.5 text-sm font-medium text-white hover:bg-primary-hover disabled:opacity-40"
+          class="flex-1 rounded-lg bg-primary py-2 text-sm font-medium text-white hover:bg-primary-hover disabled:opacity-40"
         >
           {app.syncing ? "Syncing…" : "Sync Now"}
         </button>
+      </div>
+      {#if app.config.workspaces[app.config.current_workspace]?.last_sync}
+        {@const lastSync = new Date(app.config.workspaces[app.config.current_workspace].last_sync!)}
+        {@const secsAgo = Math.floor((Date.now() - lastSync.getTime()) / 1000)}
+        {@const relTime = secsAgo < 60 ? "just now" : secsAgo < 3600 ? `${Math.floor(secsAgo / 60)}m ago` : `${Math.floor(secsAgo / 3600)}h ago`}
+        <p class="mt-1.5 text-xs opacity-40">
+          Last sync: {relTime}
+          {#if app.lastSyncResult}
+            &nbsp;·&nbsp;↑{app.lastSyncResult.uploaded} ↓{app.lastSyncResult.downloaded}
+          {/if}
+        </p>
+      {/if}
     {/if}
   </section>
 

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

@@ -550,9 +550,14 @@
       </div>
     </div>
 
-    <!-- Sync spinner -->
+    <!-- Sync status indicator -->
     {#if app.syncing}
       <div class="absolute bottom-4 right-4 z-20 h-5 w-5 animate-spin rounded-full border-2 border-primary border-t-transparent"></div>
+    {:else if app.lastSyncResult}
+      <div class="absolute bottom-4 right-4 z-20 flex items-center gap-1 rounded-full bg-black/10 px-2.5 py-1 text-xs opacity-60 dark:bg-white/10">
+        <span>↑{app.lastSyncResult.uploaded}</span>
+        <span>↓{app.lastSyncResult.downloaded}</span>
+      </div>
     {/if}
   </div>
 </div>

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

@@ -24,6 +24,8 @@ let darkMode = $state(
   globalThis.matchMedia?.("(prefers-color-scheme: dark)").matches ?? false,
 );
 let syncing = $state(false);
+let syncMode = $state<"full" | "push" | "pull">("full");
+let lastSyncResult = $state<SyncResult | null>(null);
 let error = $state<string | null>(null);
 
 // ── Derived ──────────────────────────────────────────────────────────
@@ -254,7 +256,8 @@ async function setGroupByDueDate(listId: string, enabled: boolean) {
 
 async function triggerSync() {
   if (!config?.current_workspace) return;
-  const ws = config.workspaces[config.current_workspace];
+  const workspaceName = config.current_workspace;
+  const ws = config.workspaces[workspaceName];
   if (!ws?.webdav_url) {
     error = "No WebDAV URL configured";
     return;
@@ -265,14 +268,19 @@ async function triggerSync() {
     const domain = new URL(ws.webdav_url).hostname;
     const [username, password] = await invoke<[string, string]>("load_credentials", { domain });
     const result = await invoke<SyncResult>("sync_workspace", {
+      workspaceName,
       workspacePath: ws.path,
       webdavUrl: ws.webdav_url,
       username,
       password,
+      mode: syncMode,
     });
+    lastSyncResult = result;
     if (result.errors.length > 0) {
       error = result.errors.join("; ");
     }
+    // Reload config to pick up updated last_sync timestamp
+    config = await invoke<AppConfig>("get_config");
     await loadLists();
   } catch (e) {
     error = String(e);
@@ -281,6 +289,10 @@ async function triggerSync() {
   }
 }
 
+function setSyncMode(mode: "full" | "push" | "pull") {
+  syncMode = mode;
+}
+
 function toggleDarkMode() {
   darkMode = !darkMode;
 }
@@ -326,6 +338,12 @@ export const app = {
   get syncing() {
     return syncing;
   },
+  get syncMode() {
+    return syncMode;
+  },
+  get lastSyncResult() {
+    return lastSyncResult;
+  },
   get error() {
     return error;
   },
@@ -350,6 +368,7 @@ export const app = {
   renameList,
   setGroupByDueDate,
   triggerSync,
+  setSyncMode,
   toggleDarkMode,
   setScreen,
   clearError,