feat(core): klien Docker SDK + tia-love doctor (docker/audio/go/stacks) + e2e doctor

internal/docker/client.go

@@ -0,0 +1,62 @@
+// Package docker — lapisan tipis di atas Docker SDK untuk core tia.
+// Bebas UI: dipakai bersama oleh TUI dan CLI (F-028).
+package docker
+
+import (
+	"context"
+	"fmt"
+
+	"github.com/docker/docker/client"
+)
+
+// Client — pembungkus Docker SDK dengan negosiasi versi API
+// (mendukung Docker Engine 20.10+, PRD §9).
+type Client struct {
+	cli *client.Client
+}
+
+// New membaca konfigurasi dari env (DOCKER_HOST dll) atau default socket.
+func New() (*Client, error) {
+	cli, err := client.NewClientWithOpts(client.FromEnv, client.WithAPIVersionNegotiation())
+	if err != nil {
+		return nil, fmt.Errorf("docker: buat client: %w", err)
+	}
+	return &Client{cli: cli}, nil
+}
+
+func (c *Client) Close() error { return c.cli.Close() }
+
+// Info — ringkasan daemon untuk dashboard, doctor, dan status bar.
+type Info struct {
+	ServerVersion string
+	APIVersion    string
+	Containers    int
+	Running       int
+	Images        int
+	MemoryTotal   int64
+	CPUs          int
+}
+
+func (c *Client) Info(ctx context.Context) (Info, error) {
+	i, err := c.cli.Info(ctx)
+	if err != nil {
+		return Info{}, fmt.Errorf("docker: info: %w", err)
+	}
+	return Info{
+		ServerVersion: i.ServerVersion,
+		APIVersion:    c.cli.ClientVersion(), // hasil negosiasi API
+		Containers:    i.Containers,
+		Running:       i.ContainersRunning,
+		Images:        i.Images,
+		MemoryTotal:   i.MemTotal,
+		CPUs:          i.NCPU,
+	}, nil
+}
+
+// Ping — cek daemon hidup (dipakai doctor).
+func (c *Client) Ping(ctx context.Context) error {
+	if _, err := c.cli.Ping(ctx); err != nil {
+		return fmt.Errorf("docker: ping: %w", err)
+	}
+	return nil
+}

internal/docker/client_test.go

@@ -0,0 +1,38 @@
+package docker
+
+import (
+	"context"
+	"os"
+	"testing"
+	"time"
+)
+
+// TestIntegrationInfo dijalankan hanya bila docker socket tersedia —
+// di CI runner tanpa socket, test di-skip otomatis.
+func TestIntegrationInfo(t *testing.T) {
+	if _, err := os.Stat("/var/run/docker.sock"); err != nil {
+		t.Skip("docker socket tidak ada — skip tes integrasi")
+	}
+	c, err := New()
+	if err != nil {
+		t.Fatalf("New: %v", err)
+	}
+	defer c.Close()
+
+	ctx, cancel := context.WithTimeout(context.Background(), 5*time.Second)
+	defer cancel()
+
+	if err := c.Ping(ctx); err != nil {
+		t.Fatalf("Ping: %v", err)
+	}
+	info, err := c.Info(ctx)
+	if err != nil {
+		t.Fatalf("Info: %v", err)
+	}
+	if info.ServerVersion == "" {
+		t.Fatal("ServerVersion kosong")
+	}
+	t.Logf("engine %s (API %s) · %d/%d kontainer berjalan · %d image · %d CPU · %d MB RAM",
+		info.ServerVersion, info.APIVersion, info.Running, info.Containers,
+		info.Images, info.CPUs, info.MemoryTotal/1024/1024)
+}