fix(internal/librarianops): set command.Verbose when -v flag is used (#3810)

Previously, the -v flag only passed the verbose setting to the librarian
subprocess but did not set command.Verbose. This meant commands run by
librarianops itself (git, gh, etc.) were not printed in verbose mode.

Using the -v flag now sets command.Verbose directly, enabling verbose
output for all commands run by librarianops.

Fixes #3786

Author: julieqiu

internal/librarianops/librarianops.go

@@ -98,7 +98,7 @@ For each repository, librarianops will:
 		Action: func(ctx context.Context, cmd *cli.Command) error {
 			all := cmd.Bool("all")
 			workDir := cmd.String("C")
-			verbose := cmd.Bool("v")
+			command.Verbose = cmd.Bool("v")
 			repoName := ""
 			if cmd.Args().Len() > 0 {
 				repoName = cmd.Args().Get(0)
@@ -112,7 +112,7 @@ For each repository, librarianops will:
 			if all && workDir != "" {
 				return fmt.Errorf("cannot use -C with --all")
 			}
-			return runGenerate(ctx, all, repoName, workDir, verbose)
+			return runGenerate(ctx, all, repoName, workDir, command.Verbose)
 		},
 	}
 }

internal/librarianops/librarianops_test.go

@@ -180,3 +180,33 @@ func TestUpdateLibrarianVersion(t *testing.T) {
 		t.Errorf("mismatch (-want +got):\n%s", diff)
 	}
 }
+
+func TestVerboseFlagSetsCommandVerbose(t *testing.T) {
+	origVerbose := command.Verbose
+	defer func() { command.Verbose = origVerbose }()
+
+	for _, test := range []struct {
+		name        string
+		args        []string
+		wantVerbose bool
+	}{
+		{
+			name:        "without -v flag",
+			args:        []string{"librarianops", "generate", "fake-repo"},
+			wantVerbose: false,
+		},
+		{
+			name:        "with -v flag",
+			args:        []string{"librarianops", "generate", "-v", "fake-repo"},
+			wantVerbose: true,
+		},
+	} {
+		t.Run(test.name, func(t *testing.T) {
+			command.Verbose = false
+			Run(t.Context(), test.args...)
+			if command.Verbose != test.wantVerbose {
+				t.Errorf("command.Verbose = %v, want %v", command.Verbose, test.wantVerbose)
+			}
+		})
+	}
+}