style(cli): apply ruff formatting

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

Author: mjunaidca

packages/cli/src/taskflow/commands/init_cmd.py

@@ -91,5 +91,5 @@ def init(
     console.print(f"  Default user: [cyan]{user_id}[/cyan]")
     console.print()
     console.print("[dim]Quick start:[/dim]")
-    console.print("  taskflow add \"My first task\"")
+    console.print('  taskflow add "My first task"')
     console.print("  taskflow list")

packages/cli/src/taskflow/commands/task.py

@@ -112,9 +112,7 @@ def add_task(
     if created_by is None:
         creator = get_current_user(storage)
         if creator is None:
-            console.print(
-                "[red]Error: No current user set. Run 'taskflow worker add' first.[/red]"
-            )
+            console.print("[red]Error: No current user set. Run 'taskflow worker add' first.[/red]")
             raise typer.Exit(1)
     else:
         creator = created_by
@@ -257,9 +255,7 @@ def add_subtask(
     if created_by is None:
         creator = get_current_user(storage)
         if creator is None:
-            console.print(
-                "[red]Error: No current user set. Run 'taskflow worker add' first.[/red]"
-            )
+            console.print("[red]Error: No current user set. Run 'taskflow worker add' first.[/red]")
             raise typer.Exit(1)
     else:
         creator = created_by