fix: copy-on-wrap commands and typed errors

Clone commands before wrapping Before hooks, export ErrLifecycleNotInContext
and ErrNoDependencies, add Run helper, split command.go and deps.go.

Co-authored-by: Cursor <cursoragent@cursor.com>

appcli_test.go

@@ -0,0 +1,67 @@
+package appcli_test
+
+import (
+	"context"
+	"testing"
+
+	"gitea.auvem.com/go-toolkit/app"
+	"gitea.auvem.com/go-toolkit/appcli"
+	"github.com/stretchr/testify/assert"
+	"github.com/stretchr/testify/require"
+	"github.com/urfave/cli/v3"
+)
+
+func TestNewCommandRequiresLifecycle(t *testing.T) {
+	cmd := appcli.NewCommand(&cli.Command{Name: "test"}, appcli.DepList())
+	err := cmd.Run(context.Background(), []string{"test"})
+	assert.ErrorIs(t, err, appcli.ErrLifecycleNotInContext)
+}
+
+func TestNewCommandLoadsDeps(t *testing.T) {
+	var loaded bool
+	mod := app.NewModule("dep", app.ModuleOpts{
+		Setup: func(m *app.Module) error { loaded = true; return nil },
+	})
+
+	cmd := appcli.NewCommand(&cli.Command{
+		Name: "test",
+		Action: func(ctx context.Context, c *cli.Command) error {
+			return nil
+		},
+	}, appcli.DepList(mod))
+
+	lc := app.NewLifecycle()
+	err := cmd.Run(lc.Context(context.Background()), []string{"test"})
+	require.NoError(t, err)
+	assert.True(t, loaded)
+}
+
+func TestNewCommandDoesNotMutateInput(t *testing.T) {
+	original := &cli.Command{Name: "orig"}
+	wrapped := appcli.NewCommand(original, appcli.DepList())
+	assert.NotSame(t, original, wrapped)
+	assert.Nil(t, original.Before)
+}
+
+func TestDepListEmpty(t *testing.T) {
+	fn := appcli.DepList()
+	_, err := fn(nil, nil)
+	assert.ErrorIs(t, err, appcli.ErrNoDependencies)
+}
+
+func TestVerboseFromCommand(t *testing.T) {
+	root := appcli.NewRootCommand(&cli.Command{Name: "root"})
+	assert.False(t, appcli.VerboseFromCommand(root))
+}
+
+func TestRun(t *testing.T) {
+	lc := app.NewLifecycle()
+	cmd := &cli.Command{
+		Name: "ok",
+		Action: func(ctx context.Context, c *cli.Command) error {
+			assert.NotNil(t, app.LifecycleFromContext(ctx))
+			return nil
+		},
+	}
+	require.NoError(t, appcli.Run(context.Background(), lc, cmd, []string{"ok"}))
+}