fix: apple container backend

cmd/ggo/studio/studio.go

@@ -46,6 +46,7 @@ func NewStudioCmd() *cobra.Command {
 Supported platforms:
   - wsl:    Windows Subsystem for Linux (Windows only)
   - colima: Colima container runtime (macOS/Linux)
+  - apple-container: Apple Container (macOS 26+)
   - docker: Native Docker
   - k8s:    Kubernetes (kind, minikube, etc.)
   - auto:   Auto-detect best available platform
@@ -57,6 +58,9 @@ Examples:
   # Create with specific mode
   ggo studio create my-studio --mode wsl -s "https://..."
 
+  # Create with Apple Container (macOS 26+)
+  ggo studio create my-studio --mode apple-container -s "https://..."
+
   # Create with specific Colima profile
   ggo studio create my-studio --mode colima --colima-profile myprofile
 
@@ -178,7 +182,7 @@ Examples:
 		RunE: runCreate,
 	}
 
-	cmd.Flags().StringVarP(&mode, "mode", "m", "", "Container/VM mode (wsl, colima, docker, k8s, auto)")
+	cmd.Flags().StringVarP(&mode, "mode", "m", "", "Container/VM mode (wsl, colima, apple-container, docker, k8s, auto)")
 	cmd.Flags().StringVarP(&image, "image", "i", "tensorfusion/studio-torch:latest", "Container image")
 	cmd.Flags().StringVarP(&shareLink, "share-link", "s", "", "Share link or share code to remote vGPU worker (required)")
 	cmd.Flags().StringVar(&serverURL, "server", api.GetDefaultBaseURL(), "Server URL for resolving share links")
@@ -813,8 +817,10 @@ func (r *backendsResult) RenderTUI(out *tui.Output) {
 		out.Println()
 		out.Println(styles.Subtitle.Render("Install one of the following:"))
 		out.Println()
+		out.Println("  • " + styles.Bold.Render("Apple Container (macOS 26+):") + " " + tui.URL("https://github.com/apple/container/releases"))
 		out.Println("  • " + styles.Bold.Render("Docker:") + " " + tui.URL("https://docs.docker.com/get-docker/"))
 		out.Println("  • " + styles.Bold.Render("Colima (macOS):") + " " + tui.Code("brew install colima"))
+		out.Println("  • " + styles.Bold.Render("OrbStack (macOS):") + " " + tui.Code("brew install orbstack"))
 		out.Println("  • " + styles.Bold.Render("WSL (Windows):") + " " + tui.URL("https://docs.microsoft.com/en-us/windows/wsl/install"))
 		out.Println()
 		return

docs/plans/2026-02-06-apple-container-backend-design.md

@@ -0,0 +1,42 @@
+# Apple Container Backend Design
+
+**Date:** 2026-02-06
+
+## Goal
+Enable `ggo studio create` to use Apple Container on macOS 26+ as a first-choice fallback when no Docker socket is available, while preserving existing Docker/Colima/OrbStack flows and providing clear install/upgrade guidance.
+
+## Key Behaviors
+- Replace the `apple` mode with `apple-container` across CLI flags, help text, and internal mode constants.
+- On macOS 26+:
+  - If no Docker socket is found, prefer Apple Container for auto mode.
+  - If `--mode apple-container` is specified but Apple Container is missing, prompt install.
+  - If no Docker socket is found and Apple Container is missing, prompt install.
+- On macOS < 26:
+  - If `--mode apple-container` is specified, error with OS upgrade requirement.
+  - If no runtime is available, recommend installing Colima (plus other options) and note Apple Container needs macOS 26.
+
+## Backend Strategy
+- Implement Apple Container backend using the `container` CLI (not Docker).
+- Detect availability with `container system status` and presence of the `container` CLI.
+- Implement list/get/start/stop/exec/logs/delete via `container` subcommands.
+- Parse JSON from `container list --format json` / `container inspect` to build `Environment` objects.
+
+## Runtime Detection
+- Add helper for macOS major version detection using `runtime` + `internal/platform` helper.
+- Add Docker socket discovery for common paths:
+  - `DOCKER_HOST` (unix socket)
+  - `/var/run/docker.sock`
+  - `~/.colima/*/docker.sock`
+  - `~/.orbstack/run/docker.sock`
+- Use socket presence to decide preference order on macOS 26+.
+
+## User-Facing Messaging
+- Update CLI help strings and examples to include `apple-container`.
+- Provide install guidance for:
+  - Apple Container: download signed pkg from GitHub releases.
+  - Colima/OrbStack: `brew install` suggestions.
+
+## Testing
+- Add ginkgo tests covering backend selection rules and macOS version gating.
+- Run `container` CLI end-to-end tests on a common arm64 image (e.g., `alpine:latest`), ensuring create/list/exec/logs/stop/delete flows work.
+

docs/plans/2026-02-06-apple-container-backend.md

@@ -0,0 +1,194 @@
+# Apple Container Backend Implementation Plan
+
+> **For Claude:** REQUIRED SUB-SKILL: Use superpowers:executing-plans to implement this plan task-by-task.
+
+**Goal:** Add Apple Container (`container` CLI) support for `ggo studio create` on macOS 26+, with correct auto-selection, install/upgrade messaging, and updated CLI/docs/UI strings.
+
+**Architecture:** Introduce platform helpers for macOS version and Docker socket detection, then update backend selection to prefer Apple Container only when no Docker socket is present on macOS 26+. Rebuild the Apple backend around the `container` CLI with JSON parsing for list/inspect, and ensure install/runtime hints are precise.
+
+**Tech Stack:** Go, Cobra, Ginkgo/Gomega, Apple `container` CLI.
+
+---
+
+### Task 1: Add Ginkgo suite + failing tests for macOS selection rules
+
+**Files:**
+- Create: `internal/studio/studio_suite_test.go`
+- Create: `internal/studio/manager_apple_ginkgo_test.go`
+
+**Step 1: Write the failing test**
+```go
+var _ = Describe("Apple container selection", func() {
+    It("prefers apple-container on macOS 26+ when no Docker socket is present", func() {
+        // stub platform helpers to darwin/26/no-socket
+        // register apple + docker backends (both available)
+        // expect ModeAppleContainer for ModeAuto
+    })
+
+    It("prefers docker/colima when Docker socket exists on macOS 26+", func() {
+        // stub platform helpers to darwin/26/has-socket
+        // register apple + docker backends (both available)
+        // expect ModeDocker for ModeAuto
+    })
+
+    It("rejects apple-container on macOS < 26 when explicitly requested", func() {
+        // stub platform helpers to darwin/25
+        // expect error mentioning macOS 26 upgrade
+    })
+})
+```
+
+**Step 2: Run test to verify it fails**
+Run: `go test ./internal/studio -run Apple`
+Expected: FAIL with missing helper stubs / selection logic not implemented
+
+**Step 3: Write minimal implementation**
+Implement platform helper stubs and selection logic hooks (function vars) to satisfy the tests.
+
+**Step 4: Run test to verify it passes**
+Run: `go test ./internal/studio -run Apple`
+Expected: PASS
+
+**Step 5: Commit**
+```bash
+git add internal/studio/studio_suite_test.go internal/studio/manager_apple_ginkgo_test.go
+GIT_OPTIONAL_LOCKS=0 git -c core.hooksPath=/dev/null commit -m "test: add apple-container selection tests"
+```
+
+### Task 2: Implement macOS version + Docker socket helpers and update Manager selection/hints
+
+**Files:**
+- Create: `internal/platform/macos_version_darwin.go`
+- Create: `internal/platform/macos_version_other.go`
+- Create: `internal/platform/docker_socket.go`
+- Modify: `internal/studio/manager.go`
+
+**Step 1: Write the failing test**
+Extend existing Ginkgo tests (Task 1) to assert explicit error messaging for unsupported macOS version and missing Apple Container install guidance.
+
+**Step 2: Run test to verify it fails**
+Run: `go test ./internal/studio -run Apple`
+Expected: FAIL with error text mismatch or missing helpers
+
+**Step 3: Write minimal implementation**
+- Add `platform.MacOSMajorVersion()` using `syscall.Sysctl("kern.osproductversion")` on darwin; return `0` elsewhere.
+- Add `platform.HasDockerSocket()` to scan `DOCKER_HOST`, `/var/run/docker.sock`, `~/.colima/*/docker.sock`, `~/.orbstack/run/docker.sock`.
+- Update `Manager.detectBestBackend` to:
+  - On darwin 26+: prefer apple-container only when no Docker socket is found.
+  - On darwin < 26: exclude apple-container from auto preference list.
+- Update `platformBackendHint` to include install guidance:
+  - Apple Container: download pkg from GitHub releases.
+  - Colima/OrbStack: `brew install`.
+  - Docker: link to Docker Desktop.
+- When `--mode apple-container` is requested on macOS < 26, return a clear upgrade error.
+
+**Step 4: Run test to verify it passes**
+Run: `go test ./internal/studio -run Apple`
+Expected: PASS
+
+**Step 5: Commit**
+```bash
+git add internal/platform/macos_version_darwin.go internal/platform/macos_version_other.go internal/platform/docker_socket.go internal/studio/manager.go
+GIT_OPTIONAL_LOCKS=0 git -c core.hooksPath=/dev/null commit -m "feat: add macOS version/socket helpers and selection rules"
+```
+
+### Task 3: Rebuild Apple backend to use `container` CLI + parsing helpers
+
+**Files:**
+- Modify: `internal/studio/backend_apple.go`
+- Create: `internal/studio/apple_container_parse_test.go`
+
+**Step 1: Write the failing test**
+```go
+var _ = Describe("Apple container parsing", func() {
+    It("maps container list JSON to Environment and SSH port", func() {
+        // Provide sample JSON from `container list --format json`
+        // Expect label filtering, SSH port extraction, GPU_WORKER_URL parsing
+    })
+})
+```
+
+**Step 2: Run test to verify it fails**
+Run: `go test ./internal/studio -run Apple`
+Expected: FAIL (parsing helpers not implemented)
+
+**Step 3: Write minimal implementation**
+- Replace docker CLI usage with `container` CLI subcommands:
+  - `container system status` for availability
+  - `container system start` in `EnsureRunning`
+  - `container run --detach` for create
+  - `container list --format json` for list
+  - `container inspect` for get
+  - `container exec`, `container logs`, `container start`, `container stop`, `container delete --force`
+- Add JSON parsing helpers for list/inspect output.
+- Normalize memory suffixes for `container` CLI (`Gi`->`G`, `Mi`->`M`).
+- Use labels `ggo.managed=true`, `ggo.name`, `ggo.mode=apple-container`.
+
+**Step 4: Run test to verify it passes**
+Run: `go test ./internal/studio -run Apple`
+Expected: PASS
+
+**Step 5: Commit**
+```bash
+git add internal/studio/backend_apple.go internal/studio/apple_container_parse_test.go
+GIT_OPTIONAL_LOCKS=0 git -c core.hooksPath=/dev/null commit -m "feat: implement apple-container backend via container CLI"
+```
+
+### Task 4: Update CLI/Docs/UI strings for `apple-container`
+
+**Files:**
+- Modify: `internal/studio/types.go`
+- Modify: `cmd/ggo/studio/studio.go`
+- Modify: `docs/studio-guide.md`
+- Modify: `vscode-extension/src/views/createStudioPanel.ts`
+
+**Step 1: Write the failing test**
+(Documentation/UI change; no automated test required)
+
+**Step 2: Run test to verify it fails**
+Skip
+
+**Step 3: Write minimal implementation**
+- Replace `apple` mode string with `apple-container`.
+- Update CLI help, examples, and backend listing output to include install guidance.
+- Update Studio guide table and VS Code UI mode labels.
+
+**Step 4: Run test to verify it passes**
+Run: `go test ./cmd/ggo/studio ./internal/studio`
+Expected: PASS
+
+**Step 5: Commit**
+```bash
+git add internal/studio/types.go cmd/ggo/studio/studio.go docs/studio-guide.md vscode-extension/src/views/createStudioPanel.ts
+GIT_OPTIONAL_LOCKS=0 git -c core.hooksPath=/dev/null commit -m "docs: update apple-container mode strings"
+```
+
+### Task 5: Full functional Apple Container CLI test (manual)
+
+**Files:**
+- None (manual verification)
+
+**Step 1: Run container services**
+Run: `container system start`
+Expected: services start successfully
+
+**Step 2: Run a common arm64 image**
+Run: `container run --name ggo-apple-test --detach --rm -p 18022:22/tcp alpine:latest sleep 600`
+Expected: container ID printed, `container list` shows it running
+
+**Step 3: Exec/logs/stop/delete**
+Run:
+- `container exec ggo-apple-test sh -c "echo ok"`
+- `container logs ggo-apple-test`
+- `container stop ggo-apple-test`
+Expected: commands succeed
+
+**Step 4: Record results**
+Note any failures or deviations.
+
+---
+
+**Global verification after each Go change:**
+- Run: `golangci-lint run --fix`
+- Run: `go test ./...` (at least once before finalization)
+

docs/studio-guide.md

@@ -99,7 +99,7 @@ ggo studio create my-studio -s abc123 --mode docker
 | `docker` | 原生 Docker | 所有 |
 | `colima` | Colima 容器运行时 | macOS/Linux |
 | `wsl` | Windows Subsystem for Linux | Windows |
-| `apple` | Apple Virtualization Framework | macOS |
+| `apple-container` | Apple Container（macOS 26+） | macOS |
 
 ### 卷挂载（Volume Mounts）
 

internal/platform/docker_socket.go

@@ -0,0 +1,55 @@
+package platform
+
+import (
+	"os"
+	"path/filepath"
+	"strings"
+)
+
+// HasDockerSocket checks common Docker socket locations for macOS runtimes.
+func HasDockerSocket() bool {
+	if socketPath := dockerHostSocketPath(os.Getenv("DOCKER_HOST")); socketPath != "" {
+		if fileExists(socketPath) {
+			return true
+		}
+	}
+
+	if fileExists("/var/run/docker.sock") {
+		return true
+	}
+
+	homeDir, err := os.UserHomeDir()
+	if err != nil {
+		return false
+	}
+
+	colimaGlob := filepath.Join(homeDir, ".colima", "*", "docker.sock")
+	if matches, err := filepath.Glob(colimaGlob); err == nil {
+		for _, match := range matches {
+			if fileExists(match) {
+				return true
+			}
+		}
+	}
+
+	orbstackSock := filepath.Join(homeDir, ".orbstack", "run", "docker.sock")
+	return fileExists(orbstackSock)
+}
+
+func dockerHostSocketPath(dockerHost string) string {
+	if dockerHost == "" {
+		return ""
+	}
+	if !strings.HasPrefix(dockerHost, "unix://") {
+		return ""
+	}
+	return strings.TrimPrefix(dockerHost, "unix://")
+}
+
+func fileExists(path string) bool {
+	if path == "" {
+		return false
+	}
+	_, err := os.Stat(path)
+	return err == nil
+}

internal/platform/macos_version_darwin.go

@@ -0,0 +1,31 @@
+//go:build darwin
+
+package platform
+
+import (
+	"strconv"
+	"strings"
+	"syscall"
+)
+
+// MacOSMajorVersion returns the macOS major version (e.g., 26).
+// Returns 0 when the version cannot be determined.
+func MacOSMajorVersion() int {
+	version, err := syscall.Sysctl("kern.osproductversion")
+	if err != nil {
+		return 0
+	}
+	version = strings.TrimSpace(version)
+	if version == "" {
+		return 0
+	}
+	parts := strings.Split(version, ".")
+	if len(parts) == 0 {
+		return 0
+	}
+	major, err := strconv.Atoi(parts[0])
+	if err != nil {
+		return 0
+	}
+	return major
+}

internal/platform/macos_version_other.go

@@ -0,0 +1,8 @@
+//go:build !darwin
+
+package platform
+
+// MacOSMajorVersion returns 0 on non-macOS platforms.
+func MacOSMajorVersion() int {
+	return 0
+}