fix(cli): correct lint error and confirmation-denial step in project switch

- Wrap long f-string in project.py:977 to satisfy ruff E501 (88-char limit)
- Fix 'without yes' BDD step which incorrectly passed yes=True; now uses
  CliRunner with input='n\n' to properly simulate user denying the prompt

features/steps/project_cli_commands_steps.py

@@ -673,10 +673,19 @@ def step_invoke_switch_fmt(context: Any, name: str, fmt: str) -> None:
 
 @when('I invoke project-switch for "{name}" without yes')
 def step_invoke_switch_no_confirm(context: Any, name: str) -> None:
-    """Invoke switch with --yes to accept the confirmation programmatically."""
-    from cleveragents.cli.commands.project import switch
+    """Invoke switch without --yes, denying the confirmation prompt."""
+    from typer.testing import CliRunner
 
-    _capture(context, switch, project=name, yes=True)
+    from cleveragents.cli.commands.project import app as project_app
+
+    _patch_project_mod(context)
+    try:
+        cli_runner = CliRunner()
+        result = cli_runner.invoke(project_app, ["switch", name], input="n\n")
+        context._cmd_output = result.output
+        context._cmd_failed = result.exit_code != 0
+    finally:
+        _unpatch_project_mod()
 
 
 @when('I invoke project-switch for "{name}" with yes and short flag')

src/cleveragents/cli/commands/project.py

@@ -1049,7 +1049,10 @@ def switch(
 
     if not yes:
         if current_active:
-            confirm_msg = f"Switch active project from '{current_active}' to '{proj.namespaced_name}'?"
+            confirm_msg = (
+                f"Switch active project from '{current_active}'"
+                f" to '{proj.namespaced_name}'?"
+            )
         else:
             confirm_msg = f"Set active project to '{proj.namespaced_name}'?"
         confirm = typer.confirm(confirm_msg)