feat: add --refresh flag to onboard command for non-interactive config updates

nanobot/cli/commands.py

@@ -597,6 +597,11 @@ def onboard(
     workspace: str | None = typer.Option(None, "--workspace", "-w", help="Workspace directory"),
     config: str | None = typer.Option(None, "--config", "-c", help="Path to config file"),
     wizard: bool = typer.Option(False, "--wizard", help="Use interactive wizard"),
+    refresh: bool = typer.Option(
+        False,
+        "--refresh",
+        help="Refresh config, preserving existing settings without prompting",
+    ),
 ):
     """Initialize nanobot configuration and workspace."""
     from nanobot.config.loader import get_config_path, load_config, save_config, set_config_path
@@ -618,6 +623,12 @@ def onboard(
     if config_path.exists():
         if wizard:
             config = _apply_workspace_override(load_config(config_path))
+        elif refresh:
+            config = _apply_workspace_override(load_config(config_path))
+            save_config(config, config_path)
+            console.print(
+                f"[green]✓[/green] Config refreshed at {config_path} (existing values preserved)"
+            )
         else:
             console.print(f"[yellow]Config already exists at {config_path}[/yellow]")
             console.print(

tests/cli/test_commands.py

@@ -218,6 +218,20 @@ def test_onboard_existing_config_refresh(mock_paths):
     assert (workspace_dir / "AGENTS.md").exists()
 
 
+def test_onboard_existing_config_refresh_non_interactive(mock_paths):
+    """Config exists, user specifies --refresh — should refresh non-interactively (no prompt)."""
+    config_file, workspace_dir, _ = mock_paths
+    config_file.write_text('{"existing": true}')
+
+    result = runner.invoke(app, ["onboard", "--refresh"])
+
+    assert result.exit_code == 0
+    assert "Config already exists" not in result.stdout
+    assert "existing values preserved" in result.stdout
+    assert workspace_dir.exists()
+    assert (workspace_dir / "AGENTS.md").exists()
+
+
 def test_onboard_existing_config_overwrite(mock_paths):
     """Config exists, user confirms overwrite — should reset to defaults."""
     config_file, workspace_dir, _ = mock_paths
@@ -261,6 +275,7 @@ def test_onboard_help_shows_workspace_and_config_options():
     assert "--config" in stripped_output
     assert "-c" in stripped_output
     assert "--wizard" in stripped_output
+    assert "--refresh" in stripped_output
     assert "--dir" not in stripped_output