chore: remove click-default-group dependency (#949)

Drop unused default command config; removes misleading `stack*` from help.

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

Author: remyduthu

mergify_cli/cli.py

@@ -20,17 +20,13 @@
 import sys
 
 import click
-import click_default_group
 
 from mergify_cli import VERSION
 from mergify_cli.ci import cli as ci_cli_mod
 from mergify_cli.stack import cli as stack_cli_mod
 
 
 @click.group(
-    cls=click_default_group.DefaultGroup,
-    default="stack",
-    default_if_no_args=False,
     invoke_without_command=True,
 )
 @click.option("--debug", is_flag=True, default=False, help="debug mode")

mergify_cli/tests/test_cli.py

@@ -14,3 +14,5 @@ def test_cli_shows_help_by_default() -> None:
     assert "Usage:" in result.output
     assert "Options:" in result.output
     assert "--help" in result.output
+    assert "stack*" not in result.output
+    assert "stack" in result.output

pyproject.toml

@@ -11,7 +11,6 @@ dependencies = [
     "rich==14.3.2",
     "aiofiles==25.1.0",
     "click==8.3.1",
-    "click-default-group==1.2.4",
     "opentelemetry-exporter-otlp-proto-http==1.39.1",
     "opentelemetry-sdk==1.39.1",
     "tenacity==9.1.2",
@@ -33,7 +32,6 @@ dev = [
     "respx==0.22.0",
     "types-aiofiles==25.1.0.20251011",
     "types-click==7.1.8",
-    "types-click-default-group==1.2.0.20250513",
     "types-pyyaml==6.0.12.20250915",
     "anys==0.3.1",
     "responses==0.25.8",