Fix TUI bugs: folder selection, filter stability, UI consistency

- Mail: Fix folder/account selector not triggering reload (use direct
  fetch instead of reactive reload_needed flag)
- Tasks: Store all_projects/all_tags on mount so filters don't change
  when filtering; add OR search for multiple tags
- Sync: Use rounded borders and border_title for sidebar/activity log
- Calendar: Remove padding from mini-calendar, add rounded border and
  border_title to invites panel

src/calendar/widgets/InvitesPanel.py

@@ -38,6 +38,7 @@ class InvitesPanel(Widget):
         height: auto;
         min-height: 3;
         padding: 0 1;
+        border: round $primary;
     }
     """
 
@@ -71,6 +72,10 @@ class InvitesPanel(Widget):
         if invites:
             self.invites = invites
 
+    def on_mount(self) -> None:
+        """Set border title on mount."""
+        self.border_title = "Invites"
+
     def _get_theme_color(self, color_name: str) -> str:
         """Get a color from the current theme."""
         try:

src/calendar/widgets/MonthCalendar.py

@@ -62,7 +62,7 @@ class MonthCalendar(Widget):
     MonthCalendar {
         width: 24;
         height: auto;
-        padding: 0 1;
+        padding: 0;
     }
     """
 

src/cli/sync_dashboard.py

@@ -216,16 +216,10 @@ class SyncDashboard(App):
     .sidebar {
         width: 30;
         height: 100%;
-        border: solid $primary;
+        border: round $primary;
         padding: 0;
     }
     
-    .sidebar-title {
-        text-style: bold;
-        padding: 1;
-        background: $primary-darken-2;
-    }
-    
     .countdown-container {
         height: 5;
         padding: 0 1;
@@ -269,15 +263,10 @@ class SyncDashboard(App):
     
     .log-container {
         height: 1fr;
-        border: solid $primary;
+        border: round $primary;
         padding: 0;
     }
     
-    .log-title {
-        padding: 0 1;
-        background: $primary-darken-2;
-    }
-    
     ListView {
         height: 1fr;
     }
@@ -338,8 +327,7 @@ class SyncDashboard(App):
 
         with Horizontal(classes="dashboard"):
             # Sidebar with task list
-            with Vertical(classes="sidebar"):
+            with Vertical(classes="sidebar", id="tasks-sidebar"):
-                yield Static("Tasks", classes="sidebar-title")
                 yield ListView(
                     # Stage 1: Sync local changes to server
                     TaskListItem(
@@ -416,8 +404,7 @@ class SyncDashboard(App):
                         yield Static("0%", id="progress-percent")
 
                 # Log for selected task
-                with Vertical(classes="log-container"):
+                with Vertical(classes="log-container", id="log-container"):
-                    yield Static("Activity Log", classes="log-title")
                     yield Log(id="task-log")
 
         yield Footer()
@@ -427,6 +414,13 @@ class SyncDashboard(App):
         # Set theme from shared config
         self.theme = get_theme_name()
 
+        # Set border titles
+        try:
+            self.query_one("#tasks-sidebar").border_title = "Tasks"
+            self.query_one("#log-container").border_title = "Activity Log"
+        except Exception:
+            pass
+
         # Store references to task items
         task_list = self.query_one("#task-list", ListView)
         for item in task_list.children:

src/mail/app.py

@@ -353,7 +353,9 @@ class EmailViewerApp(App):
                 self.current_message_id = 0
                 self.current_message_index = 0
                 self.selected_messages.clear()
-                self.reload_needed = True
+                self.search_query = ""  # Clear search when switching folders
+                # Directly fetch instead of relying on reload_needed watcher
+                self.fetch_envelopes()
         except Exception as e:
             logging.error(f"Error selecting folder: {e}")
 
@@ -372,9 +374,11 @@ class EmailViewerApp(App):
                 self.current_message_id = 0
                 self.current_message_index = 0
                 self.selected_messages.clear()
+                self.search_query = ""  # Clear search when switching accounts
                 # Refresh folders for new account
                 self.fetch_folders()
-                self.reload_needed = True
+                # Directly fetch instead of relying on reload_needed watcher
+                self.fetch_envelopes()
         except Exception as e:
             logging.error(f"Error selecting account: {e}")
 

src/tasks/app.py

@@ -197,6 +197,8 @@ class TasksApp(App):
         self.tasks = []
         self.projects = []
         self.tags = []
+        self.all_projects = []  # Stable list of all projects (not filtered)
+        self.all_tags = []  # Stable list of all tags (not filtered)
         self.current_project_filter = None
         self.current_tag_filters = []
         self.current_sort_column = "priority"
@@ -261,7 +263,10 @@ class TasksApp(App):
             height = max(10, min(90, height))
             notes_pane.styles.height = f"{height}%"
 
-        # Load tasks (this will also update the sidebar)
+        # Load ALL projects and tags once for stable sidebar
+        self._load_all_filters()
+
+        # Load tasks (filtered by current filters)
         self.load_tasks()
 
     def _setup_columns(self, table: DataTable, columns: list[str]) -> None:
@@ -375,32 +380,58 @@ class TasksApp(App):
         if not self.backend:
             return
 
-        # Get tasks with current filters
+        # Get ALL tasks first (unfiltered)
-        self.tasks = self.backend.get_tasks(
+        all_tasks = self.backend.get_tasks()
-            project=self.current_project_filter,
+
-            tags=self.current_tag_filters if self.current_tag_filters else None,
+        # Apply client-side filtering for OR logic
-        )
+        self.tasks = self._filter_tasks(all_tasks)
 
         # Sort tasks
         self._sort_tasks()
 
-        # Also load projects and tags for filtering
-        self.projects = self.backend.get_projects()
-        self.tags = self.backend.get_tags()
-
-        # Update sidebar with available filters
-        self._update_sidebar()
-
         # Update table
         self._update_table()
 
+    def _load_all_filters(self) -> None:
+        """Load all projects and tags once for stable sidebar."""
+        if not self.backend:
+            return
+
+        self.all_projects = self.backend.get_projects()
+        self.all_tags = self.backend.get_tags()
+
+        # Update sidebar with stable filter options
+        self._update_sidebar()
+
+    def _filter_tasks(self, tasks: list[Task]) -> list[Task]:
+        """Filter tasks by current project and tag filters using OR logic.
+
+        - If project filter is set, only show tasks from that project
+        - If tag filters are set, show tasks that have ANY of the selected tags (OR)
+        """
+        filtered = tasks
+
+        # Filter by project (single project filter is AND)
+        if self.current_project_filter:
+            filtered = [t for t in filtered if t.project == self.current_project_filter]
+
+        # Filter by tags using OR logic - show tasks with ANY of the selected tags
+        if self.current_tag_filters:
+            filtered = [
+                t
+                for t in filtered
+                if any(tag in t.tags for tag in self.current_tag_filters)
+            ]
+
+        return filtered
+
     def _update_sidebar(self) -> None:
-        """Update the filter sidebar with current projects and tags."""
+        """Update the filter sidebar with all available projects and tags."""
         try:
             sidebar = self.query_one("#sidebar", FilterSidebar)
-            # Convert projects to (name, count) tuples
+            # Use stable all_projects/all_tags, not filtered ones
-            project_data = [(p.name, p.task_count) for p in self.projects if p.name]
+            project_data = [(p.name, p.task_count) for p in self.all_projects if p.name]
-            sidebar.update_filters(projects=project_data, tags=self.tags)
+            sidebar.update_filters(projects=project_data, tags=self.all_tags)
         except Exception:
             pass  # Sidebar may not be mounted yet