feat: accept both .hokusai.yaml and .hokusai.yml config suffixes

hokusai/cli.py

@@ -32,7 +32,7 @@ app = typer.Typer(
     name="hokusai", help="AI artifact build tool.", cls=_DefaultBuildGroup
 )
 
-_CONFIG_SUFFIX = ".hokusai.yaml"
+_CONFIG_SUFFIXES = (".hokusai.yaml", ".hokusai.yml")
 
 
 def _project_name(config_path: Path) -> str:
@@ -41,16 +41,21 @@ def _project_name(config_path: Path) -> str:
     ``cards.hokusai.yaml`` → ``cards``
     """
     name = config_path.name
-    return name.removesuffix(_CONFIG_SUFFIX)
+    for suffix in _CONFIG_SUFFIXES:
+        if name.endswith(suffix):
+            return name.removesuffix(suffix)
+    return name
 
 
 def _find_config(directory: Path) -> Path:
-    """Find the single ``*.hokusai.yaml`` file in *directory*."""
-    candidates = list(directory.glob("*.hokusai.yaml"))
+    """Find the single ``*.hokusai.{yaml,yml}`` file in *directory*."""
+    candidates: list[Path] = []
+    for suffix in _CONFIG_SUFFIXES:
+        candidates.extend(directory.glob(f"*{suffix}"))
     if len(candidates) == 0:
         click.echo(
             click.style("Error: ", fg="red", bold=True)
-            + "No .hokusai.yaml file found in current directory",
+            + "No .hokusai.yaml/.yml file found in current directory",
             err=True,
         )
         raise typer.Exit(code=1)
@@ -58,7 +63,7 @@ def _find_config(directory: Path) -> Path:
         names = ", ".join(str(c.name) for c in candidates)
         click.echo(
             click.style("Error: ", fg="red", bold=True)
-            + f"Multiple .hokusai.yaml files found: {names}",
+            + f"Multiple .hokusai.yaml/.yml files found: {names}",
             err=True,
         )
         raise typer.Exit(code=1)

tests/test_cli.py

@@ -42,7 +42,7 @@ class TestFindConfig:
             mock_path_cls.cwd.return_value = tmp_path
             result = runner.invoke(app, ["build"])
         assert result.exit_code != 0
-        assert "No .hokusai.yaml file found" in result.output
+        assert "No .hokusai.yaml/.yml file found" in result.output
 
     def test_multiple_config_files(self, tmp_path: Path) -> None:
         _ = (tmp_path / "a.hokusai.yaml").write_text(
@@ -55,7 +55,7 @@ class TestFindConfig:
             mock_path_cls.cwd.return_value = tmp_path
             result = runner.invoke(app, ["build"])
         assert result.exit_code != 0
-        assert "Multiple .hokusai.yaml files found" in result.output
+        assert "Multiple .hokusai.yaml/.yml files found" in result.output
 
 
 class TestBuildCommand: