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

README.md

@@ -13,8 +13,9 @@ Status: **Phase 0 — fondasi** (lihat roadmap di `docs/PRD.md` §8).
 ```bash
 make build          # menghasilkan ./tia-love
 ./tia-love          # buka TUI
+./tia-love doctor   # periksa kesehatan sistem (docker/audio/stack)
 ./tia-love version  # versi & build info
-make test           # unit test
+make test           # unit test + e2e
 ```
 
 Nama binary final: **`tia-love`** (nama produk tetap **tia**).

THIRD_PARTY_NOTICES.md

@@ -22,6 +22,8 @@ Repo referensi hanya ada di `reference/` (git-ignored).
 | lipgloss | v2.0.6 | MIT |
 | oto | v3.5.1 | Apache-2.0 |
 | harmonica | v0.2.0 | MIT |
+| Docker SDK for Go (client) | v28.5.2+incompatible | Apache-2.0 |
+| docker/go-connections | v0.8.2 | Apache-2.0 |
 | purego *(transitif oto — driver ALSA)* | v0.11.0 | Apache-2.0 |
 | jfreymuth/pulse *(transitif oto — driver PulseAudio pure-Go)* | v0.1.3 | MIT |
 

cmd/tia-love/main.go

@@ -9,16 +9,18 @@ import (
 	tea "charm.land/bubbletea/v2"
 
 	"gitea.oxpoe.qzz.io/oxpoe/tia-love/internal/app"
+	"gitea.oxpoe.qzz.io/oxpoe/tia-love/internal/cli"
 )
 
 const usage = `tia — Terminal Is A My Way (Just Work)
 
 Pemakaian:
   tia-love             Buka TUI interaktif
+  tia-love doctor      Periksa kesehatan sistem (docker, audio, stack)
   tia-love version     Tampilkan versi & build info
 
-Subcommand CLI pendamping (convert, ps, up, down, update, doctor)
+Subcommand CLI lain (convert, ps, up, down, update)
-menyusul di Phase 1–3 — lihat docs/PRD.md §F-028.
+menyusul di Phase 2–3 — lihat docs/PRD.md §F-028.
 `
 
 func main() {
@@ -27,6 +29,8 @@ func main() {
 		case "version", "--version":
 			fmt.Println(versionString())
 			return
+		case "doctor":
+			os.Exit(cli.Doctor(os.Stdout))
 		default:
 			fmt.Fprintf(os.Stderr, "perintah tidak dikenal: %q\n\n%s", os.Args[1], usage)
 			os.Exit(2)

e2e/e2e_test.go

@@ -191,6 +191,23 @@ func TestReducedMotionToggle(t *testing.T) {
 	}
 }
 
+func TestDoctorCommand(t *testing.T) {
+	out, err := exec.Command(binPath, "doctor").CombinedOutput()
+	code := 0
+	if ee, ok := err.(*exec.ExitError); ok {
+		code = ee.ExitCode()
+	}
+	if code != 0 && code != 1 {
+		t.Fatalf("exit code %d, mau 0/1.\n%s", code, out)
+	}
+	s := string(out)
+	for _, want := range []string{"docker", "audio", "go", "stacks"} {
+		if !strings.Contains(s, want) {
+			t.Fatalf("output doctor tidak memuat %q:\n%s", want, s)
+		}
+	}
+}
+
 func TestMouseAndNavigateKeys(t *testing.T) {
 	u := startTUI(t)
 	u.waitContains("belum ada klik", 5*time.Second)

go.mod

@@ -7,10 +7,13 @@ require (
 	charm.land/lipgloss/v2 v2.0.6
 	github.com/charmbracelet/harmonica v0.2.0
 	github.com/creack/pty v1.1.24
+	github.com/docker/docker v28.5.2+incompatible
 	github.com/ebitengine/oto/v3 v3.5.1
 )
 
 require (
+	github.com/Microsoft/go-winio v0.6.4 // indirect
+	github.com/cespare/xxhash/v2 v2.3.0 // indirect
 	github.com/charmbracelet/colorprofile v0.4.3 // indirect
 	github.com/charmbracelet/ultraviolet v0.0.0-20261008173134-6b8d4baf91b4 // indirect
 	github.com/charmbracelet/x/ansi v0.11.9 // indirect
@@ -19,13 +22,38 @@ require (
 	github.com/charmbracelet/x/windows v0.2.2 // indirect
 	github.com/clipperhouse/displaywidth v0.11.0 // indirect
 	github.com/clipperhouse/uax29/v2 v2.7.0 // indirect
+	github.com/containerd/errdefs v1.0.0 // indirect
+	github.com/containerd/errdefs/pkg v0.3.0 // indirect
+	github.com/containerd/log v0.2.0 // indirect
+	github.com/distribution/reference v0.6.0 // indirect
+	github.com/docker/go-connections v0.8.2 // indirect
+	github.com/docker/go-units v0.5.0 // indirect
 	github.com/ebitengine/purego v0.11.0 // indirect
+	github.com/felixge/httpsnoop v1.1.0 // indirect
+	github.com/go-logr/logr v1.4.4 // indirect
+	github.com/go-logr/stdr v1.2.2 // indirect
 	github.com/jfreymuth/pulse v0.1.3 // indirect
 	github.com/lucasb-eyer/go-colorful v1.4.1 // indirect
 	github.com/mattn/go-runewidth v0.0.30 // indirect
+	github.com/moby/docker-image-spec v1.3.1 // indirect
+	github.com/moby/sys/atomicwriter v0.1.0 // indirect
+	github.com/moby/term v0.5.2 // indirect
+	github.com/morikuni/aec v1.1.0 // indirect
 	github.com/muesli/cancelreader v0.2.2 // indirect
+	github.com/opencontainers/go-digest v1.0.0 // indirect
+	github.com/opencontainers/image-spec v1.1.1 // indirect
+	github.com/pkg/errors v0.9.1 // indirect
 	github.com/rivo/uniseg v0.4.7 // indirect
 	github.com/xo/terminfo v1.0.0 // indirect
-	golang.org/x/sync v0.22.0 // indirect
+	go.opentelemetry.io/auto/sdk v1.2.1 // indirect
-	golang.org/x/sys v0.47.0 // indirect
+	go.opentelemetry.io/contrib/instrumentation/net/http/otelhttp v0.72.0 // indirect
+	go.opentelemetry.io/otel v1.47.0 // indirect
+	go.opentelemetry.io/otel/exporters/otlp/otlptrace/otlptracehttp v1.47.0 // indirect
+	go.opentelemetry.io/otel/log v1.47.0 // indirect
+	go.opentelemetry.io/otel/metric v1.47.0 // indirect
+	go.opentelemetry.io/otel/trace v1.47.0 // indirect
+	golang.org/x/sync v0.23.0 // indirect
+	golang.org/x/sys v0.49.0 // indirect
+	golang.org/x/time v0.16.0 // indirect
+	gotest.tools/v3 v3.5.2 // indirect
 )

go.sum

@@ -2,8 +2,16 @@ charm.land/bubbletea/v2 v2.1.0 h1:A9fj9h5LFrvQhQHFNggp8K8rvY6CUfgn9dMbb6p2HIw=
 charm.land/bubbletea/v2 v2.1.0/go.mod h1:xWHeyxIX9/wiFU2kgPW04ojOZyTzrWf+8lGjUCaftiU=
 charm.land/lipgloss/v2 v2.0.6 h1:EaGKeuA8FvF+v2BT5VmZd2LoYLaMZJXA5n34th8nCIQ=
 charm.land/lipgloss/v2 v2.0.6/go.mod h1:ipDDJNSGa1hlwDtSfW1s2/xR8Vdhbut4PXh2zEKZd0Q=
+github.com/Azure/go-ansiterm v0.0.0-20250102033503-faa5f7b0171c h1:udKWzYgxTojEKWjV8V+WSxDXJ4NFATAsZjh8iIbsQIg=
+github.com/Azure/go-ansiterm v0.0.0-20250102033503-faa5f7b0171c/go.mod h1:xomTg63KZ2rFqZQzSB4Vz2SUXa1BpHTVz9L5PTmPC4E=
+github.com/Microsoft/go-winio v0.6.4 h1:kJF2pamtYCWXf0xAT8sAkwKC0pMl2HYBrRPHAqyUc+g=
+github.com/Microsoft/go-winio v0.6.4/go.mod h1:1xl5JXG4ze/m74GH6Dc4Mwxfc3VL5siRVQjIAlHH07U=
 github.com/aymanbagabas/go-udiff v0.4.1 h1:OEIrQ8maEeDBXQDoGCbbTTXYJMYRCRO1fnodZ12Gv5o=
 github.com/aymanbagabas/go-udiff v0.4.1/go.mod h1:0L9PGwj20lrtmEMeyw4WKJ/TMyDtvAoK9bf2u/mNo3w=
+github.com/cenkalti/backoff/v5 v5.0.3 h1:ZN+IMa753KfX5hd8vVaMixjnqRZ3y8CuJKRKj1xcsSM=
+github.com/cenkalti/backoff/v5 v5.0.3/go.mod h1:rkhZdG3JZukswDf7f0cwqPNk4K0sa+F97BxZthm/crw=
+github.com/cespare/xxhash/v2 v2.3.0 h1:UL815xU9SqsFlibzuggzjXhog7bL6oX9BbNZnL2UFvs=
+github.com/cespare/xxhash/v2 v2.3.0/go.mod h1:VGX0DQ3Q6kWi7AoAeZDth3/j3BFtOZR5XLFGgcrjCOs=
 github.com/charmbracelet/colorprofile v0.4.3 h1:QPa1IWkYI+AOB+fE+mg/5/4HRMZcaXex9t5KX76i20Q=
 github.com/charmbracelet/colorprofile v0.4.3/go.mod h1:/zT4BhpD5aGFpqQQqw7a+VtHCzu+zrQtt1zhMt9mR4Q=
 github.com/charmbracelet/harmonica v0.2.0 h1:8NxJWRWg/bzKqqEaaeFNipOu77YR5t8aSwG4pgaUBiQ=
@@ -24,27 +32,114 @@ github.com/clipperhouse/displaywidth v0.11.0 h1:lBc6kY44VFw+TDx4I8opi/EtL9m20WSE
 github.com/clipperhouse/displaywidth v0.11.0/go.mod h1:bkrFNkf81G8HyVqmKGxsPufD3JhNl3dSqnGhOoSD/o0=
 github.com/clipperhouse/uax29/v2 v2.7.0 h1:+gs4oBZ2gPfVrKPthwbMzWZDaAFPGYK72F0NJv2v7Vk=
 github.com/clipperhouse/uax29/v2 v2.7.0/go.mod h1:EFJ2TJMRUaplDxHKj1qAEhCtQPW2tJSwu5BF98AuoVM=
+github.com/containerd/errdefs v1.0.0 h1:tg5yIfIlQIrxYtu9ajqY42W3lpS19XqdxRQeEwYG8PI=
+github.com/containerd/errdefs v1.0.0/go.mod h1:+YBYIdtsnF4Iw6nWZhJcqGSg/dwvV7tyJ/kCkyJ2k+M=
+github.com/containerd/errdefs/pkg v0.3.0 h1:9IKJ06FvyNlexW690DXuQNx2KA2cUJXx151Xdx3ZPPE=
+github.com/containerd/errdefs/pkg v0.3.0/go.mod h1:NJw6s9HwNuRhnjJhM7pylWwMyAkmCQvQ4GpJHEqRLVk=
+github.com/containerd/log v0.2.0 h1:BewD/umNgVnoczglOpX8eRMyEy5t5iPlu5AIpnWDONc=
+github.com/containerd/log v0.2.0/go.mod h1:/M7L7CXKcPTfNC74XzaK+5H5KbO5+4lJVpuVI6vRLoM=
 github.com/creack/pty v1.1.24 h1:bJrF4RRfyJnbTJqzRLHzcGaZK1NeM5kTC9jGgovnR1s=
 github.com/creack/pty v1.1.24/go.mod h1:08sCNb52WyoAwi2QDyzUCTgcvVFhUzewun7wtTfvcwE=
+github.com/distribution/reference v0.6.0 h1:0IXCQ5g4/QMHHkarYzh5l+u8T3t73zM5QvfrDyIgxBk=
+github.com/distribution/reference v0.6.0/go.mod h1:BbU0aIcezP1/5jX/8MP0YiH4SdvB5Y4f/wlDRiLyi3E=
+github.com/docker/docker v28.5.2+incompatible h1:DBX0Y0zAjZbSrm1uzOkdr1onVghKaftjlSWt4AFexzM=
+github.com/docker/docker v28.5.2+incompatible/go.mod h1:eEKB0N0r5NX/I1kEveEz05bcu8tLC/8azJZsviup8Sk=
+github.com/docker/go-connections v0.8.2 h1:9d9DEokx5W7qlr0shkFXIxEA7+TTD+llwzcykSlxMNc=
+github.com/docker/go-connections v0.8.2/go.mod h1:no1qkHdjq7kLMGUXYAduOhYPSJxxvgWBh7ogVvptn3Q=
+github.com/docker/go-units v0.5.0 h1:69rxXcBk27SvSaaxTtLh/8llcHD8vYHT7WSdRZ/jvr4=
+github.com/docker/go-units v0.5.0/go.mod h1:fgPhTUdO+D/Jk86RDLlptpiXQzgHJF7gydDDbaIK4Dk=
 github.com/ebitengine/oto/v3 v3.5.1 h1:7gL5DxxSQp8S1Me2jDSp+gSAyondYxpjM5RPBBqLT0c=
 github.com/ebitengine/oto/v3 v3.5.1/go.mod h1:Elkm7yzTRns3w2efvibzVOoQ65YOwmec9a76dCiK10o=
 github.com/ebitengine/purego v0.11.0 h1:jhp/D+Nyv7UUW8HAcmcjt2N2rYrYi9m3SL21k0Ua/NI=
 github.com/ebitengine/purego v0.11.0/go.mod h1:DCHPP08djqhNSoTfImcnHYQRZmd0qhakvrozqaEYhGQ=
+github.com/felixge/httpsnoop v1.1.0 h1:3YtUj32ZZkqZtt3sZZsClsymw/QDuVfpNhoA31zeORc=
+github.com/felixge/httpsnoop v1.1.0/go.mod h1:Zqxgdd+1Rkcz8euOqdr7lqgCRJztwr5hp9vDSi5UZCE=
+github.com/go-logr/logr v1.2.2/go.mod h1:jdQByPbusPIv2/zmleS9BjJVeZ6kBagPoEUsqbVz/1A=
+github.com/go-logr/logr v1.4.4 h1:tG4xh9yMsRCAiodLVTxyrkzSZ9+o0L1Kg/+cPVcbP/8=
+github.com/go-logr/logr v1.4.4/go.mod h1:9T104GzyrTigFIr8wt5mBrctHMim0Nb2HLGrmQ40KvY=
+github.com/go-logr/stdr v1.2.2 h1:hSWxHoqTgW2S2qGc0LTAI563KZ5YKYRhT3MFKZMbjag=
+github.com/go-logr/stdr v1.2.2/go.mod h1:mMo/vtBO5dYbehREoey6XUKy/eSumjCCveDpRre4VKE=
+github.com/google/go-cmp v0.7.0 h1:wk8382ETsv4JYUZwIsn6YpYiWiBsYLSJiTsyBybVuN8=
+github.com/google/go-cmp v0.7.0/go.mod h1:pXiqmnSA92OHEEa9HXL2W4E7lf9JzCmGVUdgjX3N/iU=
+github.com/google/uuid v1.6.0 h1:NIvaJDMOsjHA8n1jAhLSgzrAzy1Hgr+hNrb57e+94F0=
+github.com/google/uuid v1.6.0/go.mod h1:TIyPZe4MgqvfeYDBFedMoGGpEw/LqOeaOT+nhxU+yHo=
+github.com/grpc-ecosystem/grpc-gateway/v2 v2.30.0 h1:/Tnpcb2E0Pz/tN9s3bfEY2Q8ePCEX9iuS+cneUwncnw=
+github.com/grpc-ecosystem/grpc-gateway/v2 v2.30.0/go.mod h1:zOBXOsUaBSjKgmH4OGzV1esUpR3oUSCPYVd2cUBjKYY=
 github.com/jfreymuth/pulse v0.1.3 h1:bc5TdxiB8E+2INnFjFWWgyfgXtz2IyNNNCX+Wt/ZD14=
 github.com/jfreymuth/pulse v0.1.3/go.mod h1:cpYspI6YljhkUf1WLXLLDmeaaPFc3CnGLjDZf9dZ4no=
 github.com/lucasb-eyer/go-colorful v1.4.1 h1:1EO+WB73+EH8EVbzlrG3KLAfEypQWVHIBqlTf+2hNss=
 github.com/lucasb-eyer/go-colorful v1.4.1/go.mod h1:R4dSotOR9KMtayYi1e77YzuveK+i7ruzyGqttikkLy0=
 github.com/mattn/go-runewidth v0.0.30 h1:+KUuiDA4fF0R1p5FeueHefjDm+GIM+kWfFnDjybOPgk=
 github.com/mattn/go-runewidth v0.0.30/go.mod h1:3qAiGCV4Koz/yuveO58qUefmUTRm8r0IGEXZ9jeHp/8=
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 github.com/muesli/cancelreader v0.2.2 h1:3I4Kt4BQjOR54NavqnDogx/MIoWBFa0StPA8ELUXHmA=
 github.com/muesli/cancelreader v0.2.2/go.mod h1:3XuTXfFS2VjM+HTLZY9Ak0l6eUKfijIfMUZ4EgX0QYo=
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 github.com/xo/terminfo v1.0.0 h1:2ZpYzqWzyyytjk3TP6aJVDhkMAkc99/1xKQdA3TDTBY=
 github.com/xo/terminfo v1.0.0/go.mod h1:RbqR21r5mrJuqunuUZ/Dhy/avygyECGrLceyNeo4LiM=
+go.opentelemetry.io/auto/sdk v1.2.1 h1:jXsnJ4Lmnqd11kwkBV2LgLoFMZKizbCi5fNZ/ipaZ64=
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+go.opentelemetry.io/contrib/instrumentation/net/http/otelhttp v0.72.0 h1:LxwW/9ctSCv+QkE/cLR7M91ZIkXNMqJtEMi1vCw9U8s=
+go.opentelemetry.io/contrib/instrumentation/net/http/otelhttp v0.72.0/go.mod h1:tOsftB4SslBwwErVEPaenU2RpThXWPIU8DoJHEC4dyw=
+go.opentelemetry.io/otel v1.47.0 h1:j7ALJ/zgkS7Z6aeJW09p8VC9804bC+PpeTfCD4XPnOM=
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+go.opentelemetry.io/otel/exporters/otlp/otlptrace v1.47.0 h1:julhjPeUH/q/7hinbSdDdqt5h7Zw9YWmRlWRhI0jd54=
+go.opentelemetry.io/otel/exporters/otlp/otlptrace v1.47.0/go.mod h1:Ao2mz688LH/tFf0yMAenidq6k2YNSx6SIY2q6jDACck=
+go.opentelemetry.io/otel/exporters/otlp/otlptrace/otlptracehttp v1.47.0 h1:aXZXsZ012wOgVkqaiQv+Z/d8V0xKjmg70F6m4CE94lc=
+go.opentelemetry.io/otel/exporters/otlp/otlptrace/otlptracehttp v1.47.0/go.mod h1:ziu1gUIJhAaxM3EV1e3Ralk5AAyL1UOYz3lJJ4VSI38=
+go.opentelemetry.io/otel/log v1.47.0 h1:cOTS1CcLbSQeZKanGJ+0JpF/+t4PELi3O3bbl2lqCcI=
+go.opentelemetry.io/otel/log v1.47.0/go.mod h1:9byitSQ5pLC6PpqwGXjqdMKya6ZTswHRZh2vvXT33nw=
+go.opentelemetry.io/otel/metric v1.47.0 h1:4PptaldXx3Eat1XjMZ68pPJEs5wrhlemctZE9a3UdWY=
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+go.opentelemetry.io/otel/trace v1.47.0 h1:JOjX/Oci8K94QHddo+bbfya/Ai/nf6/dt9ZfrFNWSrM=
+go.opentelemetry.io/otel/trace v1.47.0/go.mod h1:jNaSLa2PZEYFG6fRjJABAu+bw4FS08uDmPg28lTghu0=
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internal/cli/doctor.go

@@ -0,0 +1,66 @@
+// Package cli — mode CLI pendamping (F-028).
+// Seluruh logika inti di-share dengan TUI; paket ini hanya presentasi + kode keluar.
+package cli
+
+import (
+	"context"
+	"fmt"
+	"io"
+	"os"
+	"path/filepath"
+	"runtime"
+	"time"
+
+	"gitea.oxpoe.qzz.io/oxpoe/tia-love/internal/audio"
+	"gitea.oxpoe.qzz.io/oxpoe/tia-love/internal/docker"
+)
+
+// Doctor memeriksa kesehatan sistem dan menulis laporan ke w.
+// Kode keluar: 0 = sehat (warning boleh), 1 = ada kegagalan fatal.
+//
+// shortcut: teks masih hardcode Bahasa Indonesia — pindah ke katalog i18n
+// saat F-023 masuk (Phase 1).
+func Doctor(w io.Writer) int {
+	ctx, cancel := context.WithTimeout(context.Background(), 5*time.Second)
+	defer cancel()
+
+	fail := 0
+
+	// Docker — dependency inti.
+	switch cl, err := docker.New(); {
+	case err != nil:
+		fmt.Fprintf(w, "docker   : GAGAL  %v\n", err)
+		fail++
+	default:
+		defer cl.Close()
+		if err := cl.Ping(ctx); err != nil {
+			fmt.Fprintf(w, "docker   : GAGAL  daemon tidak merespons: %v\n", err)
+			fail++
+		} else if info, err := cl.Info(ctx); err != nil {
+			fmt.Fprintf(w, "docker   : PERINGATAN  %v\n", err)
+		} else {
+			fmt.Fprintf(w, "docker   : OK  engine %s (API %s) · %d/%d kontainer berjalan · %d image\n",
+				info.ServerVersion, info.APIVersion, info.Running, info.Containers, info.Images)
+		}
+	}
+
+	// Audio — opsional; engine init async, tunggu maks 2 dtk.
+	eng := audio.New(audio.Options{Enabled: true, Volume: 70, MuteOnSSH: true})
+	eng.WaitReady(2 * time.Second)
+	fmt.Fprintf(w, "audio    : %s\n", eng.Status())
+
+	fmt.Fprintf(w, "go       : %s (%s/%s)\n", runtime.Version(), runtime.GOOS, runtime.GOARCH)
+
+	home, _ := os.UserHomeDir()
+	stacks := filepath.Join(home, ".tia", "stacks")
+	if st, err := os.Stat(stacks); err == nil && st.IsDir() {
+		fmt.Fprintf(w, "stacks   : %s\n", stacks)
+	} else {
+		fmt.Fprintf(w, "stacks   : %s (belum ada — dibuat saat onboarding)\n", stacks)
+	}
+
+	if fail > 0 {
+		return 1
+	}
+	return 0
+}

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)
+}