Simplify inspect command handling

internal/cli/root_test.go

@@ -581,6 +581,45 @@ func TestRunInspectMissingMetadata(t *testing.T) {
 	}
 }
 
+func TestRunInspectRunCommandsParseRunIDAndConfig(t *testing.T) {
+	tempDir := t.TempDir()
+	configPath := filepath.Join(tempDir, "config.yml")
+	configBody := "workspace:\n  root: " + filepath.Join(tempDir, "workspace") + "\n"
+	if err := os.WriteFile(configPath, []byte(configBody), 0o600); err != nil {
+		t.Fatalf("write config: %v", err)
+	}
+	runner := Runner{Clock: fixedClock()}
+	commands := []string{"metadata", "briefing", "data-package", "prior", "sources"}
+
+	for _, command := range commands {
+		t.Run(command+" requires run id", func(t *testing.T) {
+			var stdout bytes.Buffer
+			var stderr bytes.Buffer
+
+			err := runner.Run(context.Background(), []string{"inspect", command, "--config", configPath}, &stdout, &stderr)
+			if err == nil {
+				t.Fatal("Run() error = nil, want missing run id error")
+			}
+			if !strings.Contains(err.Error(), "requires a run id") {
+				t.Fatalf("error = %q, want missing run id context", err.Error())
+			}
+		})
+
+		t.Run(command+" accepts config", func(t *testing.T) {
+			var stdout bytes.Buffer
+			var stderr bytes.Buffer
+
+			err := runner.Run(context.Background(), []string{"inspect", command, "--config", configPath, "missing"}, &stdout, &stderr)
+			if err == nil {
+				t.Fatal("Run() error = nil, want missing metadata error")
+			}
+			if !strings.Contains(err.Error(), "metadata for run id") {
+				t.Fatalf("error = %q, want missing metadata context", err.Error())
+			}
+		})
+	}
+}
+
 func TestResolveGenerateCommands(t *testing.T) {
 	runner := Runner{Clock: fixedClock()}
 	tests := []struct {