Move Back button to top-left of all screens with ← arrow

Replace bottom-row Back buttons with a top-left "← Back" button
across all screens for consistent navigation.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

tui/gniza.tcss

@@ -168,6 +168,13 @@ SelectionList {
     margin: 0 0 0 1;
 }
 
+.back-btn {
+    width: auto;
+    min-width: 10;
+    height: 3;
+    margin: 0 0 0 0;
+}
+
 /* Button rows */
 #backup-buttons,
 #restore-buttons,

tui/screens/backup.py

@@ -18,6 +18,7 @@ class BackupScreen(Screen):
         remotes = list_conf_dir("remotes.d")
         with Horizontal(classes="screen-with-docs"):
             with Vertical(id="backup-screen"):
+                yield Button("← Back", id="btn-back", classes="back-btn")
                 yield Static("Backup", id="screen-title")
                 if not targets:
                     yield Static("No sources configured. Add a source first.")
@@ -38,7 +39,6 @@ class BackupScreen(Screen):
                     with Horizontal(id="backup-buttons"):
                         yield Button("Run Backup", variant="primary", id="btn-backup")
                         yield Button("Backup All", variant="warning", id="btn-backup-all")
-                        yield Button("Back", id="btn-back")
             yield DocsPanel.for_screen("backup-screen")
         yield Footer()
 

tui/screens/logs.py

@@ -90,11 +90,11 @@ class LogsScreen(Screen):
         yield Header(show_clock=True)
         with Horizontal(classes="screen-with-docs"):
             with Vertical(id="logs-screen"):
+                yield Button("← Back", id="btn-back", classes="back-btn")
                 yield Static("Logs", id="screen-title")
                 yield DataTable(id="logs-table")
                 with Horizontal(id="logs-buttons"):
                     yield Button("View", variant="primary", id="btn-view")
-                    yield Button("Back", id="btn-back")
                 with Horizontal(id="log-pager-buttons"):
                     yield Button("◀ Prev", id="btn-prev-page")
                     yield Static("", id="log-page-info")

tui/screens/remotes.py

@@ -18,6 +18,7 @@ class RemotesScreen(Screen):
         yield Header(show_clock=True)
         with Horizontal(classes="screen-with-docs"):
             with Vertical(id="remotes-screen"):
+                yield Button("← Back", id="btn-back", classes="back-btn")
                 yield Static("Destinations", id="screen-title")
                 yield DataTable(id="remotes-table")
                 with Horizontal(id="remotes-buttons"):
@@ -25,7 +26,6 @@ class RemotesScreen(Screen):
                     yield Button("Edit", id="btn-edit")
                     yield Button("Test", variant="warning", id="btn-test")
                     yield Button("Delete", variant="error", id="btn-delete")
-                    yield Button("Back", id="btn-back")
             yield DocsPanel.for_screen("remotes-screen")
         yield Footer()
 

tui/screens/restore.py

@@ -21,6 +21,7 @@ class RestoreScreen(Screen):
         remotes = list_conf_dir("remotes.d")
         with Horizontal(classes="screen-with-docs"):
             with Vertical(id="restore-screen"):
+                yield Button("← Back", id="btn-back", classes="back-btn")
                 yield Static("Restore", id="screen-title")
                 if not targets or not remotes:
                     yield Static("Both sources and destinations must be configured for restore.")
@@ -43,7 +44,6 @@ class RestoreScreen(Screen):
                         yield Switch(value=True, id="restore-mysql-switch")
                     with Horizontal(id="restore-buttons"):
                         yield Button("Restore", variant="primary", id="btn-restore")
-                        yield Button("Back", id="btn-back")
             yield DocsPanel.for_screen("restore-screen")
         yield Footer()
 

tui/screens/retention.py

@@ -21,6 +21,7 @@ class RetentionScreen(Screen):
         current_count = conf.get("RETENTION_COUNT", "30")
         with Horizontal(classes="screen-with-docs"):
             with Vertical(id="retention-screen"):
+                yield Button("← Back", id="btn-back", classes="back-btn")
                 yield Static("Retention Cleanup", id="screen-title")
                 if not targets:
                     yield Static("No sources configured.")
@@ -39,7 +40,6 @@ class RetentionScreen(Screen):
                 with Horizontal():
                     yield Input(value=current_count, id="ret-count", placeholder="30")
                     yield Button("Save", id="btn-save-count")
-                yield Button("Back", id="btn-back")
             yield DocsPanel.for_screen("retention-screen")
         yield Footer()
 

tui/screens/running_tasks.py

@@ -34,13 +34,13 @@ class RunningTasksScreen(Screen):
         yield Header(show_clock=True)
         with Horizontal(classes="screen-with-docs"):
             with Vertical(id="running-tasks-screen"):
+                yield Button("← Back", id="btn-back", classes="back-btn")
                 yield Static("Running Tasks", id="screen-title")
                 yield DataTable(id="rt-table")
                 with Horizontal(id="rt-buttons"):
                     yield Button("View Log", variant="primary", id="btn-rt-view")
                     yield Button("Kill Job", variant="error", id="btn-rt-kill")
                     yield Button("Clear Finished", variant="warning", id="btn-rt-clear")
-                    yield Button("Back", id="btn-rt-back")
                 yield Static("", id="rt-progress-label")
                 yield ProgressBar(id="rt-progress", total=100, show_eta=False)
                 yield _SafeRichLog(id="rt-log-viewer", wrap=True, highlight=True)
@@ -98,7 +98,7 @@ class RunningTasksScreen(Screen):
             table.move_cursor(row=min(old_row, table.row_count - 1))
 
     def on_button_pressed(self, event: Button.Pressed) -> None:
-        if event.button.id == "btn-rt-back":
+        if event.button.id == "btn-back":
             self.app.pop_screen()
         elif event.button.id == "btn-rt-clear":
             job_manager.remove_finished()

tui/screens/schedule.py

@@ -21,6 +21,7 @@ class ScheduleScreen(Screen):
         yield Header(show_clock=True)
         with Horizontal(classes="screen-with-docs"):
             with Vertical(id="schedule-screen"):
+                yield Button("← Back", id="btn-back", classes="back-btn")
                 yield Static("Schedules", id="screen-title")
                 yield DataTable(id="sched-table")
                 with Horizontal(id="sched-buttons"):
@@ -29,7 +30,6 @@ class ScheduleScreen(Screen):
                     yield Button("Toggle Active", variant="warning", id="btn-toggle")
                     yield Button("Delete", variant="error", id="btn-delete")
                     yield Button("Show crontab", id="btn-show")
-                    yield Button("Back", id="btn-back")
             yield DocsPanel.for_screen("schedule-screen")
         yield Footer()
 

tui/screens/settings.py

@@ -21,6 +21,7 @@ class SettingsScreen(Screen):
         settings = AppSettings.from_conf(conf)
         with Horizontal(classes="screen-with-docs"):
             with Vertical(id="settings-screen"):
+                yield Button("← Back", id="btn-back", classes="back-btn")
                 yield Static("Settings", id="screen-title")
                 with Vertical(classes="settings-section", id="section-general"):
                     yield Static("Log Level:")
@@ -79,7 +80,6 @@ class SettingsScreen(Screen):
                 with Horizontal(id="set-buttons"):
                     yield Button("Save", variant="primary", id="btn-save")
                     yield Button("Send Test Email", id="btn-test-email")
-                    yield Button("Back", id="btn-back")
             yield DocsPanel.for_screen("settings-screen")
         yield Footer()
 

tui/screens/snapshots.py

@@ -32,6 +32,7 @@ class SnapshotsScreen(Screen):
         remotes = list_conf_dir("remotes.d")
         with Horizontal(classes="screen-with-docs"):
             with Vertical(id="snapshots-screen"):
+                yield Button("← Back", id="btn-back", classes="back-btn")
                 yield Static("Snapshots Browser", id="screen-title")
                 if not targets or not remotes:
                     yield Static("Sources and destinations must be configured to browse snapshots.")
@@ -44,7 +45,6 @@ class SnapshotsScreen(Screen):
                     yield DataTable(id="snap-table")
                     with Horizontal(id="snapshots-buttons"):
                         yield Button("Browse Files", id="btn-browse")
-                        yield Button("Back", id="btn-back")
             yield DocsPanel.for_screen("snapshots-screen")
         yield Footer()
 

tui/screens/targets.py

@@ -16,13 +16,13 @@ class TargetsScreen(Screen):
         yield Header(show_clock=True)
         with Horizontal(classes="screen-with-docs"):
             with Vertical(id="targets-screen"):
+                yield Button("← Back", id="btn-back", classes="back-btn")
                 yield Static("Sources", id="screen-title")
                 yield DataTable(id="targets-table")
                 with Horizontal(id="targets-buttons"):
                     yield Button("Add", variant="primary", id="btn-add")
                     yield Button("Edit", id="btn-edit")
                     yield Button("Delete", variant="error", id="btn-delete")
-                    yield Button("Back", id="btn-back")
             yield DocsPanel.for_screen("targets-screen")
         yield Footer()