chore: establish local platform baseline

cmd/worker/main.go

@@ -0,0 +1,24 @@
+package main
+
+import (
+	"context"
+	"log"
+	"os/signal"
+	"syscall"
+
+	"data-terminal-cloud/internal/app"
+)
+
+type applicationRunner func(context.Context, string) error
+
+func run(ctx context.Context, runner applicationRunner) error {
+	return runner(ctx, "worker")
+}
+
+func main() {
+	ctx, stop := signal.NotifyContext(context.Background(), syscall.SIGINT, syscall.SIGTERM)
+	defer stop()
+	if err := run(ctx, app.Run); err != nil {
+		log.Fatal(err)
+	}
+}

cmd/worker/main_test.go

@@ -0,0 +1,21 @@
+package main
+
+import (
+	"context"
+	"errors"
+	"testing"
+)
+
+func TestRunWiresWorkerServiceAndPropagatesError(t *testing.T) {
+	want := errors.New("synthetic worker failure")
+	ctx := context.WithValue(context.Background(), struct{}{}, "request-context")
+	err := run(ctx, func(gotContext context.Context, serviceName string) error {
+		if gotContext != ctx || serviceName != "worker" {
+			t.Fatalf("context=%v service=%q", gotContext, serviceName)
+		}
+		return want
+	})
+	if !errors.Is(err, want) {
+		t.Fatalf("run error=%v", err)
+	}
+}