fix(a2a): re-raise typer.Exit in actor run commands and step catches

typer.Exit is not a subclass of click.exceptions.Exit in this project's
version of typer. The except clause in actor.run() and actor_run.run()
only caught click.exceptions.Exit, so typer.Exit(code=2) raised by
_resolve_config_files (not-found / no-config-data paths) fell through
to the broad except Exception handler and was re-raised as
typer.Exit(code=3), failing the exit_code==2 assertions.

BDD step files had the same gap: the (SystemExit, click.exceptions.Exit)
catch in actor_run_signature_resolve_steps.py and
actor_run_signature_security_steps.py did not include typer.Exit, so
resolve_config_files error scenarios errored instead of being caught.

ISSUES CLOSED: #691

features/steps/actor_run_signature_resolve_steps.py

@@ -165,7 +165,7 @@ def step_resolve_with_no_config_data(context: Any) -> None:
         try:
             resolve_config_files("local/empty-actor", [])
             context.resolve_exit_code = 0
-        except (SystemExit, click.exceptions.Exit) as exc:
+        except (SystemExit, click.exceptions.Exit, typer.Exit) as exc:
             context.resolve_exit_code = getattr(
                 exc, "exit_code", getattr(exc, "code", 1)
             )
@@ -209,7 +209,7 @@ def step_resolve_unknown_actor_directly(context: Any) -> None:
         try:
             resolve_config_files("nonexistent/actor", [])
             context.resolve_exit_code = 0
-        except (SystemExit, click.exceptions.Exit) as exc:
+        except (SystemExit, click.exceptions.Exit, typer.Exit) as exc:
             context.resolve_exit_code = getattr(
                 exc, "exit_code", getattr(exc, "code", 1)
             )
@@ -260,7 +260,7 @@ def step_resolve_with_empty_config_blob(context: Any) -> None:
         try:
             resolve_config_files("local/empty-blob-actor", [])
             context.resolve_exit_code = 0
-        except (SystemExit, click.exceptions.Exit) as exc:
+        except (SystemExit, click.exceptions.Exit, typer.Exit) as exc:
             context.resolve_exit_code = getattr(
                 exc, "exit_code", getattr(exc, "code", 1)
             )
@@ -356,7 +356,7 @@ def step_resolve_with_unserializable_config_blob(context: Any) -> None:
         try:
             resolve_config_files("local/bad-blob-actor", [])
             context.resolve_exit_code = 0
-        except (SystemExit, click.exceptions.Exit) as exc:
+        except (SystemExit, click.exceptions.Exit, typer.Exit) as exc:
             context.resolve_exit_code = getattr(
                 exc, "exit_code", getattr(exc, "code", 1)
             )

features/steps/actor_run_signature_security_steps.py

@@ -49,7 +49,7 @@ def step_resolve_with_control_character_name(context: Any) -> None:
         try:
             resolve_config_files(actor_name, [])
             context.resolve_exit_code = 0
-        except (SystemExit, click.exceptions.Exit) as exc:
+        except (SystemExit, click.exceptions.Exit, typer.Exit) as exc:
             context.resolve_exit_code = getattr(
                 exc, "exit_code", getattr(exc, "code", 1)
             )

src/cleveragents/cli/commands/actor.py

@@ -185,7 +185,7 @@ def run(
     except UnsafeConfigurationError as exc:
         typer.echo(f"Error: {exc}", err=True)
         raise typer.Exit(code=1) from exc
-    except click.exceptions.Exit:
+    except (click.exceptions.Exit, typer.Exit):
         raise
     except CleverAgentsError as exc:
         typer.echo(f"Error: {exc}", err=True)

src/cleveragents/cli/commands/actor_run.py

@@ -159,7 +159,7 @@ def run(
     except UnsafeConfigurationError as exc:
         typer.echo(f"Error: {exc}", err=True)
         raise typer.Exit(code=1) from exc
-    except click.exceptions.Exit:
+    except (click.exceptions.Exit, typer.Exit):
         raise
     except CleverAgentsError as exc:
         typer.echo(f"Error: {exc}", err=True)