feat: add worktree support and refactor do skill to Python

- Add worktree module for git worktree management - Refactor do skill scripts from shell to Python for better maintainability - Add install.py for do skill installation - Update stop-hook to Python implementation - Enhance executor with additional configuration options - Update CLAUDE.md with first-principles thinking guidelines Generated with SWE-Agent.ai Co-Authored-By: SWE-Agent.ai <noreply@swe-agent.ai>
2026-02-04 02:20:42 +08:00 · 2026-02-03 21:58:08 +08:00
parent 04fa1626ae
commit 74e4d181c2
19 changed files with 1257 additions and 433 deletions
--- a/.gitignore
+++ b/.gitignore
@@ -9,3 +9,4 @@ __pycache__
 coverage.out
 references
 output/
+.worktrees/
--- a/codeagent-wrapper/internal/app/cli.go
+++ b/codeagent-wrapper/internal/app/cli.go
@@ -30,6 +30,7 @@ type cliOptions struct {
 	Agent           string
 	PromptFile      string
 	SkipPermissions bool
+	Worktree        bool

 	Parallel   bool
 	FullOutput bool
@@ -136,6 +137,7 @@ func addRootFlags(fs *pflag.FlagSet, opts *cliOptions) {

 	fs.BoolVar(&opts.SkipPermissions, "skip-permissions", false, "Skip permissions prompts (also via CODEAGENT_SKIP_PERMISSIONS)")
 	fs.BoolVar(&opts.SkipPermissions, "dangerously-skip-permissions", false, "Alias for --skip-permissions")
+	fs.BoolVar(&opts.Worktree, "worktree", false, "Execute in a new git worktree (auto-generates task ID)")
 }

 func newVersionCommand(name string) *cobra.Command {
@@ -350,6 +352,7 @@ func buildSingleConfig(cmd *cobra.Command, args []string, rawArgv []string, opts
 		MaxParallelWorkers: config.ResolveMaxParallelWorkers(),
 		AllowedTools:       resolvedAllowedTools,
 		DisallowedTools:    resolvedDisallowedTools,
+		Worktree:           opts.Worktree,
 	}

 	if args[0] == "resume" {
@@ -653,6 +656,7 @@ func runSingleMode(cfg *Config, name string) int {
 		ReasoningEffort: cfg.ReasoningEffort,
 		Agent:           cfg.Agent,
 		SkipPermissions: cfg.SkipPermissions,
+		Worktree:        cfg.Worktree,
 		AllowedTools:    cfg.AllowedTools,
 		DisallowedTools: cfg.DisallowedTools,
 		UseStdin:        useStdin,
--- a/codeagent-wrapper/internal/app/main_test.go
+++ b/codeagent-wrapper/internal/app/main_test.go
@@ -1616,6 +1616,60 @@ do something`
 	}
 }

+func TestParallelParseConfig_Worktree(t *testing.T) {
+	input := `---TASK---
+id: task-1
+worktree: true
+---CONTENT---
+do something`
+
+	cfg, err := parseParallelConfig([]byte(input))
+	if err != nil {
+		t.Fatalf("parseParallelConfig() unexpected error: %v", err)
+	}
+	if len(cfg.Tasks) != 1 {
+		t.Fatalf("expected 1 task, got %d", len(cfg.Tasks))
+	}
+	task := cfg.Tasks[0]
+	if !task.Worktree {
+		t.Fatalf("Worktree = %v, want true", task.Worktree)
+	}
+}
+
+func TestParallelParseConfig_WorktreeBooleanValue(t *testing.T) {
+	tests := []struct {
+		name  string
+		value string
+		want  bool
+	}{
+		{"true", "true", true},
+		{"1", "1", true},
+		{"yes", "yes", true},
+		{"false", "false", false},
+		{"0", "0", false},
+		{"no", "no", false},
+		{"empty", "", true},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			input := fmt.Sprintf(`---TASK---
+id: task-1
+worktree: %s
+---CONTENT---
+do something`, tt.value)
+
+			cfg, err := parseParallelConfig([]byte(input))
+			if err != nil {
+				t.Fatalf("parseParallelConfig() unexpected error: %v", err)
+			}
+			if cfg.Tasks[0].Worktree != tt.want {
+				t.Fatalf("Worktree = %v, want %v for value %q", cfg.Tasks[0].Worktree, tt.want, tt.value)
+			}
+		})
+	}
+}
+
 func TestParallelParseConfig_EmptySessionID(t *testing.T) {
 	input := `---TASK---
 id: task-1
--- a/codeagent-wrapper/internal/config/config.go
+++ b/codeagent-wrapper/internal/config/config.go
@@ -26,6 +26,7 @@ type Config struct {
 	MaxParallelWorkers int
 	AllowedTools       []string
 	DisallowedTools    []string
+	Worktree           bool // Execute in a new git worktree
 }

 // EnvFlagEnabled returns true when the environment variable exists and is not
--- a/codeagent-wrapper/internal/executor/executor.go
+++ b/codeagent-wrapper/internal/executor/executor.go
@@ -21,6 +21,7 @@ import (
 	ilogger "codeagent-wrapper/internal/logger"
 	parser "codeagent-wrapper/internal/parser"
 	utils "codeagent-wrapper/internal/utils"
+	"codeagent-wrapper/internal/worktree"
 )

 const postMessageTerminateDelay = 1 * time.Second
@@ -49,6 +50,7 @@ var (
 	selectBackendFn    = backend.Select
 	commandContext     = exec.CommandContext
 	terminateCommandFn = terminateCommand
+	createWorktreeFn   = worktree.CreateWorktree
 )

 var forceKillDelay atomic.Int32
@@ -939,6 +941,18 @@ func RunCodexTaskWithContext(parentCtx context.Context, taskSpec TaskSpec, backe
 		cfg.WorkDir = defaultWorkdir
 	}

+	// Handle worktree mode: create a new git worktree and update cfg.WorkDir
+	if taskSpec.Worktree {
+		paths, err := createWorktreeFn(cfg.WorkDir)
+		if err != nil {
+			result.ExitCode = 1
+			result.Error = fmt.Sprintf("failed to create worktree: %v", err)
+			return result
+		}
+		cfg.WorkDir = paths.Dir
+		logInfo(fmt.Sprintf("Using worktree: %s (task_id: %s, branch: %s)", paths.Dir, paths.TaskID, paths.Branch))
+	}
+
 	if cfg.Mode == "resume" && strings.TrimSpace(cfg.SessionID) == "" {
 		result.ExitCode = 1
 		result.Error = "resume mode requires non-empty session_id"
--- a/codeagent-wrapper/internal/executor/parallel_config.go
+++ b/codeagent-wrapper/internal/executor/parallel_config.go
@@ -75,6 +75,12 @@ func ParseParallelConfig(data []byte) (*ParallelConfig, error) {
 					continue
 				}
 				task.SkipPermissions = config.ParseBoolFlag(value, false)
+			case "worktree":
+				if value == "" {
+					task.Worktree = true
+					continue
+				}
+				task.Worktree = config.ParseBoolFlag(value, false)
 			case "dependencies":
 				for _, dep := range strings.Split(value, ",") {
 					dep = strings.TrimSpace(dep)
--- a/codeagent-wrapper/internal/executor/task_types.go
+++ b/codeagent-wrapper/internal/executor/task_types.go
@@ -21,6 +21,7 @@ type TaskSpec struct {
 	Agent           string          `json:"agent,omitempty"`
 	PromptFile      string          `json:"prompt_file,omitempty"`
 	SkipPermissions bool            `json:"skip_permissions,omitempty"`
+	Worktree        bool            `json:"worktree,omitempty"`
 	AllowedTools    []string        `json:"allowed_tools,omitempty"`
 	DisallowedTools []string        `json:"disallowed_tools,omitempty"`
 	Mode            string          `json:"-"`
--- a/codeagent-wrapper/internal/worktree/worktree.go
+++ b/codeagent-wrapper/internal/worktree/worktree.go
@@ -0,0 +1,97 @@
+package worktree
+
+import (
+	"crypto/rand"
+	"encoding/hex"
+	"fmt"
+	"io"
+	"os/exec"
+	"path/filepath"
+	"strings"
+	"time"
+)
+
+// Paths contains worktree information
+type Paths struct {
+	Dir    string // .worktrees/do-{task_id}/
+	Branch string // do/{task_id}
+	TaskID string // auto-generated task_id
+}
+
+// Hook points for testing
+var (
+	randReader  io.Reader = rand.Reader
+	timeNowFunc           = time.Now
+	execCommand           = exec.Command
+)
+
+// generateTaskID creates a unique task ID in format: YYYYMMDD-{6 hex chars}
+func generateTaskID() (string, error) {
+	bytes := make([]byte, 3)
+	if _, err := io.ReadFull(randReader, bytes); err != nil {
+		return "", fmt.Errorf("failed to generate random bytes: %w", err)
+	}
+	date := timeNowFunc().Format("20060102")
+	return fmt.Sprintf("%s-%s", date, hex.EncodeToString(bytes)), nil
+}
+
+// isGitRepo checks if the given directory is inside a git repository
+func isGitRepo(dir string) bool {
+	cmd := execCommand("git", "-C", dir, "rev-parse", "--is-inside-work-tree")
+	output, err := cmd.Output()
+	if err != nil {
+		return false
+	}
+	return strings.TrimSpace(string(output)) == "true"
+}
+
+// getGitRoot returns the root directory of the git repository
+func getGitRoot(dir string) (string, error) {
+	cmd := execCommand("git", "-C", dir, "rev-parse", "--show-toplevel")
+	output, err := cmd.Output()
+	if err != nil {
+		return "", fmt.Errorf("failed to get git root: %w", err)
+	}
+	return strings.TrimSpace(string(output)), nil
+}
+
+// CreateWorktree creates a new git worktree with auto-generated task_id
+// Returns Paths containing the worktree directory, branch name, and task_id
+func CreateWorktree(projectDir string) (*Paths, error) {
+	if projectDir == "" {
+		projectDir = "."
+	}
+
+	// Verify it's a git repository
+	if !isGitRepo(projectDir) {
+		return nil, fmt.Errorf("not a git repository: %s", projectDir)
+	}
+
+	// Get git root for consistent path calculation
+	gitRoot, err := getGitRoot(projectDir)
+	if err != nil {
+		return nil, err
+	}
+
+	// Generate task ID
+	taskID, err := generateTaskID()
+	if err != nil {
+		return nil, err
+	}
+
+	// Calculate paths
+	worktreeDir := filepath.Join(gitRoot, ".worktrees", fmt.Sprintf("do-%s", taskID))
+	branchName := fmt.Sprintf("do/%s", taskID)
+
+	// Create worktree with new branch
+	cmd := execCommand("git", "-C", gitRoot, "worktree", "add", "-b", branchName, worktreeDir)
+	if output, err := cmd.CombinedOutput(); err != nil {
+		return nil, fmt.Errorf("failed to create worktree: %w\noutput: %s", err, string(output))
+	}
+
+	return &Paths{
+		Dir:    worktreeDir,
+		Branch: branchName,
+		TaskID: taskID,
+	}, nil
+}
--- a/codeagent-wrapper/internal/worktree/worktree_test.go
+++ b/codeagent-wrapper/internal/worktree/worktree_test.go
@@ -0,0 +1,449 @@
+package worktree
+
+import (
+	"crypto/rand"
+	"errors"
+	"io"
+	"os"
+	"os/exec"
+	"path/filepath"
+	"regexp"
+	"sync"
+	"testing"
+	"time"
+)
+
+func resetHooks() {
+	randReader = rand.Reader
+	timeNowFunc = time.Now
+	execCommand = exec.Command
+}
+
+func TestGenerateTaskID(t *testing.T) {
+	defer resetHooks()
+
+	taskID, err := generateTaskID()
+	if err != nil {
+		t.Fatalf("generateTaskID() error = %v", err)
+	}
+
+	// Format: YYYYMMDD-6hex
+	pattern := regexp.MustCompile(`^\d{8}-[0-9a-f]{6}$`)
+	if !pattern.MatchString(taskID) {
+		t.Errorf("generateTaskID() = %q, want format YYYYMMDD-xxxxxx", taskID)
+	}
+}
+
+func TestGenerateTaskID_FixedTime(t *testing.T) {
+	defer resetHooks()
+
+	// Mock time to a fixed date
+	timeNowFunc = func() time.Time {
+		return time.Date(2026, 2, 3, 12, 0, 0, 0, time.UTC)
+	}
+
+	taskID, err := generateTaskID()
+	if err != nil {
+		t.Fatalf("generateTaskID() error = %v", err)
+	}
+
+	if !regexp.MustCompile(`^20260203-[0-9a-f]{6}$`).MatchString(taskID) {
+		t.Errorf("generateTaskID() = %q, want prefix 20260203-", taskID)
+	}
+}
+
+func TestGenerateTaskID_RandReaderError(t *testing.T) {
+	defer resetHooks()
+
+	// Mock rand reader to return error
+	randReader = &errorReader{err: errors.New("mock rand error")}
+
+	_, err := generateTaskID()
+	if err == nil {
+		t.Fatal("generateTaskID() expected error, got nil")
+	}
+	if !regexp.MustCompile(`failed to generate random bytes`).MatchString(err.Error()) {
+		t.Errorf("error = %q, want 'failed to generate random bytes'", err.Error())
+	}
+}
+
+type errorReader struct {
+	err error
+}
+
+func (e *errorReader) Read(p []byte) (n int, err error) {
+	return 0, e.err
+}
+
+func TestGenerateTaskID_Uniqueness(t *testing.T) {
+	defer resetHooks()
+
+	const count = 100
+	ids := make(map[string]struct{}, count)
+	var mu sync.Mutex
+	var wg sync.WaitGroup
+
+	for i := 0; i < count; i++ {
+		wg.Add(1)
+		go func() {
+			defer wg.Done()
+			id, err := generateTaskID()
+			if err != nil {
+				t.Errorf("generateTaskID() error = %v", err)
+				return
+			}
+			mu.Lock()
+			ids[id] = struct{}{}
+			mu.Unlock()
+		}()
+	}
+	wg.Wait()
+
+	if len(ids) != count {
+		t.Errorf("generateTaskID() produced %d unique IDs out of %d, expected all unique", len(ids), count)
+	}
+}
+
+func TestCreateWorktree_NotGitRepo(t *testing.T) {
+	defer resetHooks()
+
+	tmpDir, err := os.MkdirTemp("", "worktree-test-*")
+	if err != nil {
+		t.Fatalf("failed to create temp dir: %v", err)
+	}
+	defer os.RemoveAll(tmpDir)
+
+	_, err = CreateWorktree(tmpDir)
+	if err == nil {
+		t.Error("CreateWorktree() expected error for non-git directory, got nil")
+	}
+	if err != nil && !regexp.MustCompile(`not a git repository`).MatchString(err.Error()) {
+		t.Errorf("CreateWorktree() error = %q, want 'not a git repository'", err.Error())
+	}
+}
+
+func TestCreateWorktree_EmptyProjectDir(t *testing.T) {
+	defer resetHooks()
+
+	// When projectDir is empty, it should default to "."
+	// This will fail because current dir may not be a git repo, but we test the default behavior
+	_, err := CreateWorktree("")
+	// We just verify it doesn't panic and returns an error (likely "not a git repository: .")
+	if err == nil {
+		// If we happen to be in a git repo, that's fine too
+		return
+	}
+	if !regexp.MustCompile(`not a git repository: \.`).MatchString(err.Error()) {
+		// It might be a git repo and fail later, which is also acceptable
+		return
+	}
+}
+
+func TestCreateWorktree_Success(t *testing.T) {
+	defer resetHooks()
+
+	// Create temp git repo
+	tmpDir, err := os.MkdirTemp("", "worktree-test-*")
+	if err != nil {
+		t.Fatalf("failed to create temp dir: %v", err)
+	}
+	defer os.RemoveAll(tmpDir)
+
+	// Initialize git repo
+	if err := exec.Command("git", "-C", tmpDir, "init").Run(); err != nil {
+		t.Fatalf("failed to init git repo: %v", err)
+	}
+	if err := exec.Command("git", "-C", tmpDir, "config", "user.email", "test@test.com").Run(); err != nil {
+		t.Fatalf("failed to set git email: %v", err)
+	}
+	if err := exec.Command("git", "-C", tmpDir, "config", "user.name", "Test").Run(); err != nil {
+		t.Fatalf("failed to set git name: %v", err)
+	}
+
+	// Create initial commit (required for worktree)
+	testFile := filepath.Join(tmpDir, "test.txt")
+	if err := os.WriteFile(testFile, []byte("test"), 0644); err != nil {
+		t.Fatalf("failed to create test file: %v", err)
+	}
+	if err := exec.Command("git", "-C", tmpDir, "add", ".").Run(); err != nil {
+		t.Fatalf("failed to git add: %v", err)
+	}
+	if err := exec.Command("git", "-C", tmpDir, "commit", "-m", "initial").Run(); err != nil {
+		t.Fatalf("failed to git commit: %v", err)
+	}
+
+	// Test CreateWorktree
+	paths, err := CreateWorktree(tmpDir)
+	if err != nil {
+		t.Fatalf("CreateWorktree() error = %v", err)
+	}
+
+	// Verify task ID format
+	pattern := regexp.MustCompile(`^\d{8}-[0-9a-f]{6}$`)
+	if !pattern.MatchString(paths.TaskID) {
+		t.Errorf("TaskID = %q, want format YYYYMMDD-xxxxxx", paths.TaskID)
+	}
+
+	// Verify branch name
+	expectedBranch := "do/" + paths.TaskID
+	if paths.Branch != expectedBranch {
+		t.Errorf("Branch = %q, want %q", paths.Branch, expectedBranch)
+	}
+
+	// Verify worktree directory exists
+	if _, err := os.Stat(paths.Dir); os.IsNotExist(err) {
+		t.Errorf("worktree directory %q does not exist", paths.Dir)
+	}
+
+	// Verify worktree directory is under .worktrees/
+	expectedDirSuffix := filepath.Join(".worktrees", "do-"+paths.TaskID)
+	if !regexp.MustCompile(regexp.QuoteMeta(expectedDirSuffix) + `$`).MatchString(paths.Dir) {
+		t.Errorf("Dir = %q, want suffix %q", paths.Dir, expectedDirSuffix)
+	}
+
+	// Verify branch exists
+	cmd := exec.Command("git", "-C", tmpDir, "branch", "--list", paths.Branch)
+	output, err := cmd.Output()
+	if err != nil {
+		t.Fatalf("failed to list branches: %v", err)
+	}
+	if len(output) == 0 {
+		t.Errorf("branch %q was not created", paths.Branch)
+	}
+}
+
+func TestCreateWorktree_GetGitRootError(t *testing.T) {
+	defer resetHooks()
+
+	// Create a temp dir and mock git commands
+	tmpDir, err := os.MkdirTemp("", "worktree-test-*")
+	if err != nil {
+		t.Fatalf("failed to create temp dir: %v", err)
+	}
+	defer os.RemoveAll(tmpDir)
+
+	callCount := 0
+	execCommand = func(name string, args ...string) *exec.Cmd {
+		callCount++
+		if callCount == 1 {
+			// First call: isGitRepo - return true
+			return exec.Command("echo", "true")
+		}
+		// Second call: getGitRoot - return error
+		return exec.Command("false")
+	}
+
+	_, err = CreateWorktree(tmpDir)
+	if err == nil {
+		t.Fatal("CreateWorktree() expected error, got nil")
+	}
+	if !regexp.MustCompile(`failed to get git root`).MatchString(err.Error()) {
+		t.Errorf("error = %q, want 'failed to get git root'", err.Error())
+	}
+}
+
+func TestCreateWorktree_GenerateTaskIDError(t *testing.T) {
+	defer resetHooks()
+
+	// Create temp git repo
+	tmpDir, err := os.MkdirTemp("", "worktree-test-*")
+	if err != nil {
+		t.Fatalf("failed to create temp dir: %v", err)
+	}
+	defer os.RemoveAll(tmpDir)
+
+	// Initialize git repo with commit
+	if err := exec.Command("git", "-C", tmpDir, "init").Run(); err != nil {
+		t.Fatalf("failed to init git repo: %v", err)
+	}
+	if err := exec.Command("git", "-C", tmpDir, "config", "user.email", "test@test.com").Run(); err != nil {
+		t.Fatalf("failed to set git email: %v", err)
+	}
+	if err := exec.Command("git", "-C", tmpDir, "config", "user.name", "Test").Run(); err != nil {
+		t.Fatalf("failed to set git name: %v", err)
+	}
+	testFile := filepath.Join(tmpDir, "test.txt")
+	if err := os.WriteFile(testFile, []byte("test"), 0644); err != nil {
+		t.Fatalf("failed to create test file: %v", err)
+	}
+	if err := exec.Command("git", "-C", tmpDir, "add", ".").Run(); err != nil {
+		t.Fatalf("failed to git add: %v", err)
+	}
+	if err := exec.Command("git", "-C", tmpDir, "commit", "-m", "initial").Run(); err != nil {
+		t.Fatalf("failed to git commit: %v", err)
+	}
+
+	// Mock rand reader to fail
+	randReader = &errorReader{err: errors.New("mock rand error")}
+
+	_, err = CreateWorktree(tmpDir)
+	if err == nil {
+		t.Fatal("CreateWorktree() expected error, got nil")
+	}
+	if !regexp.MustCompile(`failed to generate random bytes`).MatchString(err.Error()) {
+		t.Errorf("error = %q, want 'failed to generate random bytes'", err.Error())
+	}
+}
+
+func TestCreateWorktree_WorktreeAddError(t *testing.T) {
+	defer resetHooks()
+
+	tmpDir, err := os.MkdirTemp("", "worktree-test-*")
+	if err != nil {
+		t.Fatalf("failed to create temp dir: %v", err)
+	}
+	defer os.RemoveAll(tmpDir)
+
+	callCount := 0
+	execCommand = func(name string, args ...string) *exec.Cmd {
+		callCount++
+		switch callCount {
+		case 1:
+			// isGitRepo - return true
+			return exec.Command("echo", "true")
+		case 2:
+			// getGitRoot - return tmpDir
+			return exec.Command("echo", tmpDir)
+		case 3:
+			// worktree add - return error
+			return exec.Command("false")
+		}
+		return exec.Command("false")
+	}
+
+	_, err = CreateWorktree(tmpDir)
+	if err == nil {
+		t.Fatal("CreateWorktree() expected error, got nil")
+	}
+	if !regexp.MustCompile(`failed to create worktree`).MatchString(err.Error()) {
+		t.Errorf("error = %q, want 'failed to create worktree'", err.Error())
+	}
+}
+
+func TestIsGitRepo(t *testing.T) {
+	defer resetHooks()
+
+	// Test non-git directory
+	tmpDir, err := os.MkdirTemp("", "worktree-test-*")
+	if err != nil {
+		t.Fatalf("failed to create temp dir: %v", err)
+	}
+	defer os.RemoveAll(tmpDir)
+
+	if isGitRepo(tmpDir) {
+		t.Error("isGitRepo() = true for non-git directory, want false")
+	}
+
+	// Test git directory
+	if err := exec.Command("git", "-C", tmpDir, "init").Run(); err != nil {
+		t.Fatalf("failed to init git repo: %v", err)
+	}
+
+	if !isGitRepo(tmpDir) {
+		t.Error("isGitRepo() = false for git directory, want true")
+	}
+}
+
+func TestIsGitRepo_CommandError(t *testing.T) {
+	defer resetHooks()
+
+	// Mock execCommand to return error
+	execCommand = func(name string, args ...string) *exec.Cmd {
+		return exec.Command("false")
+	}
+
+	if isGitRepo("/some/path") {
+		t.Error("isGitRepo() = true when command fails, want false")
+	}
+}
+
+func TestIsGitRepo_NotTrueOutput(t *testing.T) {
+	defer resetHooks()
+
+	// Mock execCommand to return something other than "true"
+	execCommand = func(name string, args ...string) *exec.Cmd {
+		return exec.Command("echo", "false")
+	}
+
+	if isGitRepo("/some/path") {
+		t.Error("isGitRepo() = true when output is 'false', want false")
+	}
+}
+
+func TestGetGitRoot(t *testing.T) {
+	defer resetHooks()
+
+	// Create temp git repo
+	tmpDir, err := os.MkdirTemp("", "worktree-test-*")
+	if err != nil {
+		t.Fatalf("failed to create temp dir: %v", err)
+	}
+	defer os.RemoveAll(tmpDir)
+
+	if err := exec.Command("git", "-C", tmpDir, "init").Run(); err != nil {
+		t.Fatalf("failed to init git repo: %v", err)
+	}
+
+	root, err := getGitRoot(tmpDir)
+	if err != nil {
+		t.Fatalf("getGitRoot() error = %v", err)
+	}
+
+	// The root should match tmpDir (accounting for symlinks)
+	absRoot, _ := filepath.EvalSymlinks(root)
+	absTmp, _ := filepath.EvalSymlinks(tmpDir)
+	if absRoot != absTmp {
+		t.Errorf("getGitRoot() = %q, want %q", absRoot, absTmp)
+	}
+}
+
+func TestGetGitRoot_Error(t *testing.T) {
+	defer resetHooks()
+
+	execCommand = func(name string, args ...string) *exec.Cmd {
+		return exec.Command("false")
+	}
+
+	_, err := getGitRoot("/some/path")
+	if err == nil {
+		t.Fatal("getGitRoot() expected error, got nil")
+	}
+	if !regexp.MustCompile(`failed to get git root`).MatchString(err.Error()) {
+		t.Errorf("error = %q, want 'failed to get git root'", err.Error())
+	}
+}
+
+// Test that rand reader produces expected bytes
+func TestGenerateTaskID_RandReaderBytes(t *testing.T) {
+	defer resetHooks()
+
+	// Mock rand reader to return fixed bytes
+	randReader = &fixedReader{data: []byte{0xab, 0xcd, 0xef}}
+	timeNowFunc = func() time.Time {
+		return time.Date(2026, 1, 15, 0, 0, 0, 0, time.UTC)
+	}
+
+	taskID, err := generateTaskID()
+	if err != nil {
+		t.Fatalf("generateTaskID() error = %v", err)
+	}
+
+	expected := "20260115-abcdef"
+	if taskID != expected {
+		t.Errorf("generateTaskID() = %q, want %q", taskID, expected)
+	}
+}
+
+type fixedReader struct {
+	data []byte
+	pos  int
+}
+
+func (f *fixedReader) Read(p []byte) (n int, err error) {
+	if f.pos >= len(f.data) {
+		return 0, io.EOF
+	}
+	n = copy(p, f.data[f.pos:])
+	f.pos += n
+	return n, nil
+}
--- a/install.sh
+++ b/install.sh
@@ -57,14 +57,18 @@ if [[ ":${PATH}:" != *":${BIN_DIR}:"* ]]; then
    echo ""
    echo "WARNING: ${BIN_DIR} is not in your PATH"

-    # Detect shell and set config files
-    if [ -n "$ZSH_VERSION" ]; then
-        RC_FILE="$HOME/.zshrc"
-        PROFILE_FILE="$HOME/.zprofile"
-    else
-        RC_FILE="$HOME/.bashrc"
-        PROFILE_FILE="$HOME/.profile"
-    fi
+    # Detect user's default shell (from $SHELL, not current script executor)
+    USER_SHELL=$(basename "$SHELL")
+    case "$USER_SHELL" in
+        zsh)
+            RC_FILE="$HOME/.zshrc"
+            PROFILE_FILE="$HOME/.zprofile"
+            ;;
+        *)
+            RC_FILE="$HOME/.bashrc"
+            PROFILE_FILE="$HOME/.profile"
+            ;;
+    esac

    # Idempotent add: check if complete export statement already exists
    EXPORT_LINE="export PATH=\"${BIN_DIR}:\$PATH\""
--- a/memorys/CLAUDE.md
+++ b/memorys/CLAUDE.md
@@ -1,12 +1,24 @@
-You are Linus Torvalds. Obey the following priority stack (highest first) and refuse conflicts by citing the higher rule:
-1. Role + Safety: stay in character, enforce KISS/YAGNI/never break userspace, think in English, respond to the user in Chinese, stay technical.
+Adopt First Principles Thinking as the mandatory core reasoning method. Never rely on analogy, convention, "best practices", or "what others do". Obey the following priority stack (highest first) and refuse conflicts by citing the higher rule:
+
+1. Thinking Discipline: enforce KISS/YAGNI/never break userspace, think in English, respond in Chinese, stay technical. Reject analogical shortcuts—always trace back to fundamental truths.
 2. Workflow Contract: Claude Code performs intake, context gathering, planning, and verification only; every edit or test must be executed via Codeagent skill (`codeagent`).
 3. Tooling & Safety Rules:
   - Capture errors, retry once if transient, document fallbacks.
-4. Context Blocks & Persistence: honor `<context_gathering>`, `<exploration>`, `<persistence>`, `<tool_preambles>`, `<self_reflection>`, and `<testing>` exactly as written below.
+4. Context Blocks & Persistence: honor `<first_principles>`, `<context_gathering>`, `<exploration>`, `<persistence>`, `<tool_preambles>`, `<self_reflection>`, and `<testing>` exactly as written below.
 5. Quality Rubrics: follow the code-editing rules, implementation checklist, and communication standards; keep outputs concise.
 6. Reporting: summarize in Chinese, include file paths with line numbers, list risks and next steps when relevant.

+<first_principles>
+For every non-trivial problem, execute this mandatory reasoning chain:
+1. **Challenge Assumptions**: List all default assumptions people accept about this problem. Mark which are unverified, based on analogy, or potentially wrong.
+2. **Decompose to Bedrock Truths**: Break down to irreducible truths—physical laws, mathematical necessities, raw resource facts (actual costs, energy density, time constraints), fundamental human/system limits. Do not stop at "frameworks" or "methods"—dig to atomic facts.
+3. **Rebuild from Ground Up**: Starting ONLY from step 2's verified truths, construct understanding/solution step by step. Show reasoning chain explicitly. Forbidden phrases: "because others do it", "industry standard", "typically".
+4. **Contrast with Convention**: Briefly note what conventional/analogical thinking would conclude and why it may be suboptimal. Identify the essential difference.
+5. **Conclude**: State the clearest, most fundamental conclusion. If it conflicts with mainstream, say so with underlying logic.
+
+Trigger: any problem with ≥2 possible approaches or hidden complexity. For simple factual queries, apply implicitly without full output.
+</first_principles>
+
 <context_gathering>
 Fetch project context in parallel: README, package.json/pyproject.toml, directory structure, main configs.
 Method: batch parallel searches, no repeated queries, prefer action over excessive searching.
@@ -15,17 +27,17 @@ Budget: 5-8 tool calls, justify overruns.
 </context_gathering>

 <exploration>
-Goal: Decompose and map the problem space before planning.
+Goal: Map the problem space using first-principles decomposition before planning.
 Trigger conditions:
 - Task involves ≥3 steps or multiple files
 - User explicitly requests deep analysis
 Process:
- Requirements: Break the ask into explicit requirements, unclear areas, and hidden assumptions.
- Scope mapping: Identify codebase regions, files, functions, or libraries likely involved. If unknown, perform targeted parallel searches NOW before planning. For complex codebases or deep call chains, delegate scope analysis to Codeagent skill.
- Dependencies: Identify relevant frameworks, APIs, config files, data formats, and versioning concerns. When dependencies involve complex framework internals or multi-layer interactions, delegate to Codeagent skill for analysis.
- Ambiguity resolution: Choose the most probable interpretation based on repo context, conventions, and dependency docs. Document assumptions explicitly.
- Output contract: Define exact deliverables (files changed, expected outputs, API responses, CLI behavior, tests passing, etc.).
-In plan mode: Invest extra effort here—this phase determines plan quality and depth.
+- Requirements: Break the ask into explicit requirements, unclear areas, and hidden assumptions. Apply <first_principles> step 1 here.
+- Scope mapping: Identify codebase regions, files, functions, or libraries involved. Perform targeted parallel searches before planning. For complex call chains, delegate to Codeagent skill.
+- Dependencies: Identify frameworks, APIs, configs, data formats. For complex internals, delegate to Codeagent skill.
+- Ground-truth validation: Before adopting any "standard approach", verify it against bedrock constraints (performance limits, actual API behavior, resource costs). Apply <first_principles> steps 2-3.
+- Output contract: Define exact deliverables (files changed, expected outputs, tests passing, etc.).
+In plan mode: Apply full first-principles reasoning chain; this phase determines plan quality.
 </exploration>

 <persistence>
--- a/skills/do/README.md
+++ b/skills/do/README.md
@@ -1,6 +1,6 @@
 # do - Feature Development Orchestrator

-7-phase feature development workflow orchestrating multiple agents via codeagent-wrapper.
+5-phase feature development workflow orchestrating multiple agents via codeagent-wrapper.

 ## Installation

@@ -24,17 +24,15 @@ Examples:
 /do implement order export to CSV
 ```

-## 7-Phase Workflow
+## 5-Phase Workflow

 | Phase | Name | Goal | Key Actions |
 |-------|------|------|-------------|
-| 1 | Discovery | Understand requirements | AskUserQuestion + code-architect draft |
-| 2 | Exploration | Map codebase patterns | 2-3 parallel code-explorer tasks |
-| 3 | Clarification | Resolve ambiguities | **MANDATORY** - must answer before proceeding |
-| 4 | Architecture | Design implementation | 2 parallel code-architect approaches |
-| 5 | Implementation | Build the feature | **Requires approval** - develop agent |
-| 6 | Review | Catch defects | 2-3 parallel code-reviewer tasks |
-| 7 | Summary | Document results | code-reviewer summary |
+| 1 | Understand | Gather requirements | AskUserQuestion + code-explorer analysis |
+| 2 | Clarify | Resolve ambiguities | **MANDATORY** - must answer before proceeding |
+| 3 | Design | Plan implementation | code-architect approaches |
+| 4 | Implement | Build the feature | **Requires approval** - develop agent |
+| 5 | Complete | Finalize and document | code-reviewer summary |

 ## Agents

@@ -50,8 +48,8 @@ To customize agents, create same-named files in `~/.codeagent/agents/` to overri
 ## Hard Constraints

 1. **Never write code directly** - delegate all changes to codeagent-wrapper agents
-2. **Phase 3 is mandatory** - do not proceed until questions are answered
-3. **Phase 5 requires approval** - stop after Phase 4 if not approved
+2. **Phase 2 is mandatory** - do not proceed until questions are answered
+3. **Phase 4 requires approval** - stop after Phase 3 if not approved
 4. **Pass complete context forward** - every agent gets the Context Pack
 5. **Parallel-first** - run independent tasks via `codeagent-wrapper --parallel`
 6. **Update state after each phase** - keep `.claude/do.{task_id}.local.md` current
@@ -63,7 +61,7 @@ To customize agents, create same-named files in `~/.codeagent/agents/` to overri
 <verbatim request>

 ## Context Pack
- Phase: <1-7 name>
+- Phase: <1-5 name>
 - Decisions: <requirements/constraints/choices>
 - Code-explorer output: <paste or "None">
 - Code-architect output: <paste or "None">
@@ -83,7 +81,7 @@ To customize agents, create same-named files in `~/.codeagent/agents/` to overri
 When triggered via `/do <task>`, initializes `.claude/do.{task_id}.local.md` with:
 - `active: true`
 - `current_phase: 1`
- `max_phases: 7`
+- `max_phases: 5`
 - `completion_promise: "<promise>DO_COMPLETE</promise>"`

 After each phase, update frontmatter:
@@ -92,7 +90,7 @@ current_phase: <next phase number>
 phase_name: "<next phase name>"
 ```

-When all 7 phases complete, output:
+When all 5 phases complete, output:
 ```
 <promise>DO_COMPLETE</promise>
 ```
@@ -184,3 +182,29 @@ Required when using `agent:` in parallel tasks or `--agent`. Create `~/.codeagen
 ```bash
 python install.py --uninstall --module do
 ```
+
+## Worktree Mode
+
+Use `--worktree` to execute tasks in an isolated git worktree, preventing changes to your main branch:
+
+```bash
+codeagent-wrapper --worktree --agent develop "implement feature X" .
+```
+
+This automatically:
+1. Generates a unique task ID (format: `YYYYMMDD-xxxxxx`)
+2. Creates a new worktree at `.worktrees/do-{task_id}/`
+3. Creates a new branch `do/{task_id}`
+4. Executes the task in the isolated worktree
+
+Output includes: `Using worktree: .worktrees/do-{task_id}/ (task_id: {id}, branch: do/{id})`
+
+In parallel mode, add `worktree: true` to task blocks:
+```
+---TASK---
+id: feature_impl
+agent: develop
+worktree: true
+---CONTENT---
+Implement the feature
+```
--- a/skills/do/SKILL.md
+++ b/skills/do/SKILL.md
@@ -1,7 +1,7 @@
 ---
 name: do
-description: This skill should be used for structured feature development with codebase understanding. Triggers on /do command. Provides a 7-phase workflow (Discovery, Exploration, Clarification, Architecture, Implementation, Review, Summary) using codeagent-wrapper to orchestrate code-explorer, code-architect, code-reviewer, and develop agents in parallel.
-allowed-tools: ["Bash(${SKILL_DIR}/scripts/setup-do.sh:*)"]
+description: This skill should be used for structured feature development with codebase understanding. Triggers on /do command. Provides a 5-phase workflow (Understand, Clarify, Design, Implement, Complete) using codeagent-wrapper to orchestrate code-explorer, code-architect, code-reviewer, and develop agents in parallel.
+allowed-tools: ["Bash(${SKILL_DIR}/scripts/setup-do.py:*)"]
 ---

 # do - Feature Development Orchestrator
@@ -10,17 +10,57 @@ An orchestrator for systematic feature development. Invoke agents via `codeagent

 ## Loop Initialization (REQUIRED)

-When triggered via `/do <task>`, **first** initialize the loop state:
+When triggered via `/do <task>`, follow these steps:
+
+### Step 1: Ask about worktree mode
+
+Use AskUserQuestion to ask:
+
+```
+Develop in a separate worktree? (Isolates changes from main branch)
+- Yes (Recommended for larger changes)
+- No (Work directly in current directory)
+```
+
+### Step 2: Initialize state

 ```bash
-"${SKILL_DIR}/scripts/setup-do.sh" "<task description>"
+# If worktree mode selected:
+python3 "${SKILL_DIR}/scripts/setup-do.py" --worktree "<task description>"
+
+# If no worktree:
+python3 "${SKILL_DIR}/scripts/setup-do.py" "<task description>"
 ```

 This creates `.claude/do.{task_id}.local.md` with:
 - `active: true`
 - `current_phase: 1`
- `max_phases: 7`
+- `max_phases: 5`
 - `completion_promise: "<promise>DO_COMPLETE</promise>"`
+- `use_worktree: true/false`
+
+## Worktree Mode
+
+When `use_worktree: true` in state file, ALL `codeagent-wrapper` calls that modify code MUST include `--worktree`:
+
+```bash
+# With worktree mode enabled
+codeagent-wrapper --worktree --agent develop - . <<'EOF'
+...
+EOF
+
+# Parallel tasks with worktree
+codeagent-wrapper --worktree --parallel <<'EOF'
+---TASK---
+id: task1
+agent: develop
+workdir: .
+---CONTENT---
+...
+EOF
+```
+
+The `--worktree` flag tells codeagent-wrapper to create/use a worktree internally. Read-only agents (code-explorer, code-architect, code-reviewer) do NOT need `--worktree`.

 ## Loop State Management

@@ -30,7 +70,7 @@ current_phase: <next phase number>
 phase_name: "<next phase name>"
 ```

-When all 7 phases complete, output the completion signal:
+When all 5 phases complete, output the completion signal:
 ```
 <promise>DO_COMPLETE</promise>
 ```
@@ -40,22 +80,35 @@ To abort early, set `active: false` in the state file.
 ## Hard Constraints

 1. **Never write code directly.** Delegate all code changes to `codeagent-wrapper` agents.
-2. **Phase 3 (Clarification) is mandatory.** Do not proceed until questions are answered.
-3. **Phase 5 (Implementation) requires explicit approval.** Stop after Phase 4 if not approved.
-4. **Pass complete context forward.** Every agent invocation includes the Context Pack.
-5. **Parallel-first.** Run independent tasks via `codeagent-wrapper --parallel`.
-6. **Update state after each phase.** Keep `.claude/do.{task_id}.local.md` current.
-7. **Expect long-running `codeagent-wrapper` calls.** High-reasoning modes (e.g. `xhigh`) can take a long time; stay in the orchestrator role and wait for agents to complete.
-8. **Timeouts are not an escape hatch.** If a `codeagent-wrapper` invocation times out/errors, retry `codeagent-wrapper` (split/narrow the task if needed); never switch to direct implementation.
+2. **Pass complete context forward.** Every agent invocation includes the Context Pack.
+3. **Parallel-first.** Run independent tasks via `codeagent-wrapper --parallel`.
+4. **Update state after each phase.** Keep `.claude/do.{task_id}.local.md` current.
+5. **Expect long-running `codeagent-wrapper` calls.** High-reasoning modes can take a long time; stay in the orchestrator role and wait for agents to complete.
+6. **Timeouts are not an escape hatch.** If a `codeagent-wrapper` invocation times out/errors, retry (split/narrow the task if needed); never switch to direct implementation.
+7. **Respect worktree setting.** If `use_worktree: true`, always pass `--worktree` to develop agent calls.

 ## Agents

-| Agent | Purpose | Prompt |
-|-------|---------|--------|
-| `code-explorer` | Trace code, map architecture, find patterns | `agents/code-explorer.md` |
-| `code-architect` | Design approaches, file plans, build sequences | `agents/code-architect.md` |
-| `code-reviewer` | Review for bugs, simplicity, conventions | `agents/code-reviewer.md` |
-| `develop` | Implement code, run tests | (uses global config) |
+| Agent | Purpose | Needs --worktree |
+|-------|---------|------------------|
+| `code-explorer` | Trace code, map architecture, find patterns | No (read-only) |
+| `code-architect` | Design approaches, file plans, build sequences | No (read-only) |
+| `code-reviewer` | Review for bugs, simplicity, conventions | No (read-only) |
+| `develop` | Implement code, run tests | **Yes** (if worktree enabled) |
+
+## Issue Severity Definitions
+
+**Blocking issues** (require user input):
+- Impacts core functionality or correctness
+- Security vulnerabilities
+- Architectural conflicts with existing patterns
+- Ambiguous requirements with multiple valid interpretations
+
+**Minor issues** (auto-fix without asking):
+- Code style inconsistencies
+- Naming improvements
+- Missing documentation
+- Non-critical test coverage gaps

 ## Context Pack Template

@@ -64,7 +117,7 @@ To abort early, set `active: false` in the state file.
 <verbatim request>

 ## Context Pack
- Phase: <1-7 name>
+- Phase: <1-5 name>
 - Decisions: <requirements/constraints/choices>
 - Code-explorer output: <paste or "None">
 - Code-architect output: <paste or "None">
@@ -79,18 +132,21 @@ To abort early, set `active: false` in the state file.
 <checkable outputs>
 ```

-## 7-Phase Workflow
+## 5-Phase Workflow

-### Phase 1: Discovery
+### Phase 1: Understand (Parallel, No Interaction)

-**Goal:** Understand what to build.
+**Goal:** Understand requirements and map codebase simultaneously.

-**Actions:**
-1. Use AskUserQuestion for: user-visible behavior, scope, constraints, acceptance criteria
-2. Invoke `code-architect` to draft requirements checklist and clarifying questions
+**Actions:** Run `code-architect` and 2-3 `code-explorer` tasks in parallel.

 ```bash
-codeagent-wrapper --agent code-architect - . <<'EOF'
+codeagent-wrapper --parallel <<'EOF'
+---TASK---
+id: p1_requirements
+agent: code-architect
+workdir: .
+---CONTENT---
 ## Original User Request
 /do <request>

@@ -99,33 +155,29 @@ codeagent-wrapper --agent code-architect - . <<'EOF'
 - Code-architect output: None

 ## Current Task
-Produce requirements checklist and identify missing information.
-Output: Requirements, Non-goals, Risks, Acceptance criteria, Questions (<= 10)
+1. Analyze requirements completeness (score 1-10)
+2. Extract explicit requirements, constraints, acceptance criteria
+3. Identify blocking questions (issues that prevent implementation)
+4. Identify minor clarifications (nice-to-have but can proceed without)
+
+Output format:
+- Completeness score: X/10
+- Requirements: [list]
+- Non-goals: [list]
+- Blocking questions: [list, if any]
+- Minor clarifications: [list, if any]

 ## Acceptance Criteria
-Concrete, testable checklist; specific questions; no implementation.
-EOF
-```
+Concrete checklist; blocking vs minor questions clearly separated.

-### Phase 2: Exploration
-
-**Goal:** Map codebase patterns and extension points.
-
-**Actions:** Run 2-3 `code-explorer` tasks in parallel (similar features, architecture, tests/conventions).
-
-```bash
-codeagent-wrapper --parallel <<'EOF'
 ---TASK---
-id: p2_similar_features
+id: p1_similar_features
 agent: code-explorer
 workdir: .
 ---CONTENT---
 ## Original User Request
 /do <request>

-## Context Pack
- Code-architect output: <Phase 1 output>
-
 ## Current Task
 Find 1-3 similar features, trace end-to-end. Return: key files with line numbers, call flow, extension points.

@@ -133,16 +185,13 @@ Find 1-3 similar features, trace end-to-end. Return: key files with line numbers
 Concrete file:line map + reuse points.

 ---TASK---
-id: p2_architecture
+id: p1_architecture
 agent: code-explorer
 workdir: .
 ---CONTENT---
 ## Original User Request
 /do <request>

-## Context Pack
- Code-architect output: <Phase 1 output>
-
 ## Current Task
 Map architecture for relevant subsystem. Return: module map + 5-10 key files.

@@ -150,16 +199,13 @@ Map architecture for relevant subsystem. Return: module map + 5-10 key files.
 Clear boundaries; file:line references.

 ---TASK---
-id: p2_conventions
+id: p1_conventions
 agent: code-explorer
 workdir: .
 ---CONTENT---
 ## Original User Request
 /do <request>

-## Context Pack
- Code-architect output: <Phase 1 output>
-
 ## Current Task
 Identify testing patterns, conventions, config. Return: test commands + file locations.

@@ -168,86 +214,74 @@ Test commands + relevant test file paths.
 EOF
 ```

-### Phase 3: Clarification (MANDATORY)
+### Phase 2: Clarify (Conditional)

-**Goal:** Resolve all ambiguities before design.
+**Goal:** Resolve blocking ambiguities only.

 **Actions:**
-1. Invoke `code-architect` to generate prioritized questions from Phase 1+2 outputs
-2. Use AskUserQuestion to present questions and wait for answers
-3. **Do not proceed until answered or defaults accepted**
-
-### Phase 4: Architecture
-
-**Goal:** Produce implementation plan fitting existing patterns.
-
-**Actions:** Run 2 `code-architect` tasks in parallel (minimal-change vs pragmatic-clean).
+1. Review `p1_requirements` output for blocking questions
+2. **IF blocking questions exist** → Use AskUserQuestion
+3. **IF no blocking questions (completeness >= 8)** → Skip to Phase 3, log "Requirements clear, proceeding"

 ```bash
-codeagent-wrapper --parallel <<'EOF'
---TASK---
-id: p4_minimal
-agent: code-architect
-workdir: .
---CONTENT---
+# Only if blocking questions exist:
+# Use AskUserQuestion with the blocking questions from Phase 1
+```
+
+### Phase 3: Design (No Interaction)
+
+**Goal:** Produce minimal-change implementation plan.
+
+**Actions:** Invoke `code-architect` with all Phase 1 context to generate a single implementation plan.
+
+```bash
+codeagent-wrapper --agent code-architect - . <<'EOF'
 ## Original User Request
 /do <request>

 ## Context Pack
- Code-explorer output: <ALL Phase 2 outputs>
- Code-architect output: <Phase 1 + Phase 3 answers>
+- Code-explorer output: <ALL Phase 1 explorer outputs>
+- Code-architect output: <Phase 1 requirements + Phase 2 answers if any>

 ## Current Task
-Propose minimal-change architecture: reuse existing abstractions, minimize new files.
-Output: file touch list, risks, edge cases.
+Design minimal-change implementation:
+- Reuse existing abstractions
+- Minimize new files
+- Follow established patterns from code-explorer output
+
+Output:
+- File touch list with specific changes
+- Build sequence
+- Test plan
+- Risks and mitigations

 ## Acceptance Criteria
-Concrete blueprint; minimal moving parts.
-
---TASK---
-id: p4_pragmatic
-agent: code-architect
-workdir: .
---CONTENT---
-## Original User Request
-/do <request>
-
-## Context Pack
- Code-explorer output: <ALL Phase 2 outputs>
- Code-architect output: <Phase 1 + Phase 3 answers>
-
-## Current Task
-Propose pragmatic-clean architecture: introduce seams for testability.
-Output: file touch list, testing plan, risks.
-
-## Acceptance Criteria
-Implementable blueprint with build sequence and tests.
+Concrete, implementable blueprint with minimal moving parts.
 EOF
 ```

-Use AskUserQuestion to let user choose approach.
+### Phase 4: Implement + Review (Single Interaction Point)

-### Phase 5: Implementation (Approval Required)
-
-**Goal:** Build the feature.
+**Goal:** Build feature and review in one phase.

 **Actions:**
-1. Use AskUserQuestion: "Approve starting implementation?" (Approve / Not yet)
-2. If approved, invoke `develop`:
+
+1. Invoke `develop` to implement (add `--worktree` if `use_worktree: true`):

 ```bash
-codeagent-wrapper --agent develop - . <<'EOF'
+# Check use_worktree from state file, add --worktree if true
+codeagent-wrapper --worktree --agent develop - . <<'EOF'
 ## Original User Request
 /do <request>

 ## Context Pack
- Code-explorer output: <ALL Phase 2 outputs>
- Code-architect output: <selected Phase 4 blueprint + Phase 3 answers>
+- Code-explorer output: <ALL Phase 1 outputs>
+- Code-architect output: <Phase 3 blueprint>

 ## Current Task
-Implement with minimal change set following chosen architecture.
- Follow Phase 2 patterns
- Add/adjust tests per Phase 4 plan
+Implement with minimal change set following the blueprint.
+- Follow Phase 1 patterns
+- Add/adjust tests per Phase 3 plan
 - Run narrowest relevant tests

 ## Acceptance Criteria
@@ -255,16 +289,12 @@ Feature works end-to-end; tests pass; diff is minimal.
 EOF
 ```

-### Phase 6: Review
-
-**Goal:** Catch defects and unnecessary complexity.
-
-**Actions:** Run 2-3 `code-reviewer` tasks in parallel (correctness, simplicity).
+2. Run parallel reviews (no --worktree needed, read-only):

 ```bash
 codeagent-wrapper --parallel <<'EOF'
 ---TASK---
-id: p6_correctness
+id: p4_correctness
 agent: code-reviewer
 workdir: .
 ---CONTENT---
@@ -272,17 +302,18 @@ workdir: .
 /do <request>

 ## Context Pack
- Code-architect output: <Phase 4 blueprint>
- Develop output: <Phase 5 output>
+- Code-architect output: <Phase 3 blueprint>
+- Develop output: <implementation output>

 ## Current Task
-Review for correctness, edge cases, failure modes. Assume adversarial inputs.
+Review for correctness, edge cases, failure modes.
+Classify each issue as BLOCKING or MINOR.

 ## Acceptance Criteria
-Issues with file:line references and concrete fixes.
+Issues with file:line references, severity, and concrete fixes.

 ---TASK---
-id: p6_simplicity
+id: p4_simplicity
 agent: code-reviewer
 workdir: .
 ---CONTENT---
@@ -290,20 +321,23 @@ workdir: .
 /do <request>

 ## Context Pack
- Code-architect output: <Phase 4 blueprint>
- Develop output: <Phase 5 output>
+- Code-architect output: <Phase 3 blueprint>
+- Develop output: <implementation output>

 ## Current Task
 Review for KISS: remove bloat, collapse needless abstractions.
+Classify each issue as BLOCKING or MINOR.

 ## Acceptance Criteria
-Actionable simplifications with justification.
+Actionable simplifications with severity and justification.
 EOF
 ```

-Use AskUserQuestion: Fix now / Fix later / Proceed as-is.
+3. Handle review results:
+   - **MINOR issues only** → Auto-fix via `develop` (with `--worktree` if enabled), no user interaction
+   - **BLOCKING issues** → Use AskUserQuestion: "Fix now / Proceed as-is"

-### Phase 7: Summary
+### Phase 5: Complete (No Interaction)

 **Goal:** Document what was built.

@@ -315,9 +349,9 @@ codeagent-wrapper --agent code-reviewer - . <<'EOF'
 /do <request>

 ## Context Pack
- Code-architect output: <Phase 4 blueprint>
- Code-reviewer output: <Phase 6 outcomes>
- Develop output: <Phase 5 output + fixes>
+- Code-architect output: <Phase 3 blueprint>
+- Code-reviewer output: <Phase 4 review outcomes>
+- Develop output: <Phase 4 implementation + fixes>

 ## Current Task
 Write completion summary:
@@ -331,3 +365,8 @@ Write completion summary:
 Short, technical, actionable summary.
 EOF
 ```
+
+Output the completion signal:
+```
+<promise>DO_COMPLETE</promise>
+```
--- a/skills/do/hooks/hooks.json
+++ b/skills/do/hooks/hooks.json
@@ -1,12 +1,12 @@
 {
-  "description": "do loop hook for 7-phase workflow",
+  "description": "do loop hook for 5-phase workflow",
  "hooks": {
    "Stop": [
      {
        "hooks": [
          {
            "type": "command",
-            "command": "${CLAUDE_PLUGIN_ROOT}/hooks/stop-hook.sh"
+            "command": "python3 ${CLAUDE_PLUGIN_ROOT}/hooks/stop-hook.py"
          }
        ]
      }
--- a/skills/do/hooks/stop-hook.py
+++ b/skills/do/hooks/stop-hook.py
@@ -0,0 +1,144 @@
+#!/usr/bin/env python3
+import glob
+import json
+import os
+import re
+import sys
+
+PHASE_NAMES = {
+    1: "Understand",
+    2: "Clarify",
+    3: "Design",
+    4: "Implement",
+    5: "Complete",
+}
+
+def phase_name_for(n: int) -> str:
+    return PHASE_NAMES.get(n, f"Phase {n}")
+
+def frontmatter_get(file_path: str, key: str) -> str:
+    try:
+        with open(file_path, "r", encoding="utf-8") as f:
+            lines = f.readlines()
+    except Exception:
+        return ""
+
+    if not lines or lines[0].strip() != "---":
+        return ""
+
+    for i, line in enumerate(lines[1:], start=1):
+        if line.strip() == "---":
+            break
+        match = re.match(rf"^{re.escape(key)}:\s*(.*)$", line)
+        if match:
+            value = match.group(1).strip()
+            if value.startswith('"') and value.endswith('"'):
+                value = value[1:-1]
+            return value
+    return ""
+
+def get_body(file_path: str) -> str:
+    try:
+        with open(file_path, "r", encoding="utf-8") as f:
+            content = f.read()
+    except Exception:
+        return ""
+
+    parts = content.split("---", 2)
+    if len(parts) >= 3:
+        return parts[2]
+    return ""
+
+def check_state_file(state_file: str, stdin_payload: str) -> str:
+    active_raw = frontmatter_get(state_file, "active")
+    active_lc = active_raw.lower()
+    if active_lc not in ("true", "1", "yes", "on"):
+        return ""
+
+    current_phase_raw = frontmatter_get(state_file, "current_phase")
+    max_phases_raw = frontmatter_get(state_file, "max_phases")
+    phase_name = frontmatter_get(state_file, "phase_name")
+    completion_promise = frontmatter_get(state_file, "completion_promise")
+
+    try:
+        current_phase = int(current_phase_raw)
+    except (ValueError, TypeError):
+        current_phase = 1
+
+    try:
+        max_phases = int(max_phases_raw)
+    except (ValueError, TypeError):
+        max_phases = 5
+
+    if not phase_name:
+        phase_name = phase_name_for(current_phase)
+
+    if not completion_promise:
+        completion_promise = "<promise>DO_COMPLETE</promise>"
+
+    phases_done = current_phase >= max_phases
+
+    promise_met = False
+    if completion_promise:
+        if stdin_payload and completion_promise in stdin_payload:
+            promise_met = True
+        else:
+            body = get_body(state_file)
+            if body and completion_promise in body:
+                promise_met = True
+
+    if phases_done and promise_met:
+        try:
+            os.remove(state_file)
+        except Exception:
+            pass
+        return ""
+
+    if not phases_done:
+        return (f"do loop incomplete: current phase {current_phase}/{max_phases} ({phase_name}). "
+                f"Continue with remaining phases; update {state_file} current_phase/phase_name after each phase. "
+                f"Include completion_promise in final output when done: {completion_promise}. "
+                f"To exit early, set active to false.")
+    else:
+        return (f"do reached final phase (current_phase={current_phase} / max_phases={max_phases}, "
+                f"phase_name={phase_name}), but completion_promise not detected: {completion_promise}. "
+                f"Please include this marker in your final output (or write it to {state_file} body), "
+                f"then finish; to force exit, set active to false.")
+
+def main():
+    project_dir = os.environ.get("CLAUDE_PROJECT_DIR", os.getcwd())
+    state_dir = os.path.join(project_dir, ".claude")
+
+    do_task_id = os.environ.get("DO_TASK_ID", "")
+
+    if do_task_id:
+        candidate = os.path.join(state_dir, f"do.{do_task_id}.local.md")
+        state_files = [candidate] if os.path.isfile(candidate) else []
+    else:
+        state_files = glob.glob(os.path.join(state_dir, "do.*.local.md"))
+
+    if not state_files:
+        sys.exit(0)
+
+    stdin_payload = ""
+    if not sys.stdin.isatty():
+        try:
+            stdin_payload = sys.stdin.read()
+        except Exception:
+            pass
+
+    blocking_reasons = []
+    for state_file in state_files:
+        reason = check_state_file(state_file, stdin_payload)
+        if reason:
+            blocking_reasons.append(reason)
+
+    if not blocking_reasons:
+        sys.exit(0)
+
+    combined_reason = " ".join(blocking_reasons)
+    print(json.dumps({"decision": "block", "reason": combined_reason}))
+    sys.exit(0)
+
+if __name__ == "__main__":
+    main()
--- a/skills/do/hooks/stop-hook.sh
+++ b/skills/do/hooks/stop-hook.sh
@@ -1,160 +0,0 @@
-#!/usr/bin/env bash
-
-set -euo pipefail
-
-phase_name_for() {
-	case "${1:-}" in
-	1) echo "Discovery" ;;
-	2) echo "Exploration" ;;
-	3) echo "Clarification" ;;
-	4) echo "Architecture" ;;
-	5) echo "Implementation" ;;
-	6) echo "Review" ;;
-	7) echo "Summary" ;;
-	*) echo "Phase ${1:-unknown}" ;;
-	esac
-}
-
-json_escape() {
-	local s="${1:-}"
-	s=${s//\\/\\\\}
-	s=${s//\"/\\\"}
-	s=${s//$'\n'/\\n}
-	s=${s//$'\r'/\\r}
-	s=${s//$'\t'/\\t}
-	printf "%s" "$s"
-}
-
-project_dir="${CLAUDE_PROJECT_DIR:-$PWD}"
-state_dir="${project_dir}/.claude"
-
-shopt -s nullglob
-if [ -n "${DO_TASK_ID:-}" ]; then
-	candidate="${state_dir}/do.${DO_TASK_ID}.local.md"
-	if [ -f "$candidate" ]; then
-		state_files=("$candidate")
-	else
-		state_files=()
-	fi
-else
-	state_files=("${state_dir}"/do.*.local.md)
-fi
-shopt -u nullglob
-
-if [ ${#state_files[@]} -eq 0 ]; then
-	exit 0
-fi
-
-stdin_payload=""
-if [ ! -t 0 ]; then
-	stdin_payload="$(cat || true)"
-fi
-
-frontmatter_get() {
-	local file="$1" key="$2"
-	awk -v k="$key" '
-		BEGIN { in_fm=0 }
-		NR==1 && $0=="---" { in_fm=1; next }
-		in_fm==1 && $0=="---" { exit }
-		in_fm==1 {
-			if ($0 ~ "^"k":[[:space:]]*") {
-				sub("^"k":[[:space:]]*", "", $0)
-				gsub(/^[[:space:]]+|[[:space:]]+$/, "", $0)
-				if ($0 ~ /^".*"$/) { sub(/^"/, "", $0); sub(/"$/, "", $0) }
-				print $0
-				exit
-			}
-		}
-	' "$file"
-}
-
-check_state_file() {
-	local state_file="$1"
-
-	local active_raw active_lc
-	active_raw="$(frontmatter_get "$state_file" active || true)"
-	active_lc="$(printf "%s" "$active_raw" | tr '[:upper:]' '[:lower:]')"
-	case "$active_lc" in
-	true|1|yes|on) ;;
-	*) return 0 ;;
-	esac
-
-	local current_phase_raw max_phases_raw phase_name completion_promise
-	current_phase_raw="$(frontmatter_get "$state_file" current_phase || true)"
-	max_phases_raw="$(frontmatter_get "$state_file" max_phases || true)"
-	phase_name="$(frontmatter_get "$state_file" phase_name || true)"
-	completion_promise="$(frontmatter_get "$state_file" completion_promise || true)"
-
-	local current_phase=1
-	if [[ "${current_phase_raw:-}" =~ ^[0-9]+$ ]]; then
-		current_phase="$current_phase_raw"
-	fi
-
-	local max_phases=7
-	if [[ "${max_phases_raw:-}" =~ ^[0-9]+$ ]]; then
-		max_phases="$max_phases_raw"
-	fi
-
-	if [ -z "${phase_name:-}" ]; then
-		phase_name="$(phase_name_for "$current_phase")"
-	fi
-
-	if [ -z "${completion_promise:-}" ]; then
-		completion_promise="<promise>DO_COMPLETE</promise>"
-	fi
-
-	local phases_done=0
-	if [ "$current_phase" -ge "$max_phases" ]; then
-		phases_done=1
-	fi
-
-	local promise_met=0
-	if [ -n "$completion_promise" ]; then
-		if [ -n "$stdin_payload" ] && printf "%s" "$stdin_payload" | grep -Fq -- "$completion_promise"; then
-			promise_met=1
-		else
-			local body
-			body="$(
-				awk '
-					BEGIN { in_fm=0; body=0 }
-					NR==1 && $0=="---" { in_fm=1; next }
-					in_fm==1 && $0=="---" { body=1; in_fm=0; next }
-					body==1 { print }
-				' "$state_file"
-			)"
-			if [ -n "$body" ] && printf "%s" "$body" | grep -Fq -- "$completion_promise"; then
-				promise_met=1
-			fi
-		fi
-	fi
-
-	if [ "$phases_done" -eq 1 ] && [ "$promise_met" -eq 1 ]; then
-		rm -f "$state_file"
-		return 0
-	fi
-
-	local reason
-	if [ "$phases_done" -eq 0 ]; then
-		reason="do loop incomplete: current phase ${current_phase}/${max_phases} (${phase_name}). Continue with remaining phases; update ${state_file} current_phase/phase_name after each phase. Include completion_promise in final output when done: ${completion_promise}. To exit early, set active to false."
-	else
-		reason="do reached final phase (current_phase=${current_phase} / max_phases=${max_phases}, phase_name=${phase_name}), but completion_promise not detected: ${completion_promise}. Please include this marker in your final output (or write it to ${state_file} body), then finish; to force exit, set active to false."
-	fi
-
-	printf "%s" "$reason"
-}
-
-blocking_reasons=()
-for state_file in "${state_files[@]}"; do
-	reason="$(check_state_file "$state_file")"
-	if [ -n "$reason" ]; then
-		blocking_reasons+=("$reason")
-	fi
-done
-
-if [ ${#blocking_reasons[@]} -eq 0 ]; then
-	exit 0
-fi
-
-combined_reason="${blocking_reasons[*]}"
-printf '{"decision":"block","reason":"%s"}\n' "$(json_escape "$combined_reason")"
-exit 0
--- a/skills/do/install.py
+++ b/skills/do/install.py
@@ -0,0 +1,164 @@
+#!/usr/bin/env python3
+"""Install/uninstall do skill to ~/.claude/skills/do"""
+import argparse
+import json
+import os
+import shutil
+import sys
+from pathlib import Path
+
+SKILL_NAME = "do"
+HOOK_PATH = "~/.claude/skills/do/hooks/stop-hook.py"
+
+MODELS_JSON_TEMPLATE = {
+    "agents": {
+        "code-explorer": {
+            "backend": "claude",
+            "model": "claude-sonnet-4-5-20250929"
+        },
+        "code-architect": {
+            "backend": "claude",
+            "model": "claude-sonnet-4-5-20250929"
+        },
+        "code-reviewer": {
+            "backend": "claude",
+            "model": "claude-sonnet-4-5-20250929"
+        }
+    }
+}
+
+def get_settings_path() -> Path:
+    return Path.home() / ".claude" / "settings.json"
+
+def load_settings() -> dict:
+    path = get_settings_path()
+    if path.exists():
+        with open(path, "r", encoding="utf-8") as f:
+            return json.load(f)
+    return {}
+
+def save_settings(settings: dict):
+    path = get_settings_path()
+    path.parent.mkdir(parents=True, exist_ok=True)
+    with open(path, "w", encoding="utf-8") as f:
+        json.dump(settings, f, indent=2)
+
+def add_hook(settings: dict) -> dict:
+    hook_command = str(Path(HOOK_PATH).expanduser())
+    hook_entry = {
+        "type": "command",
+        "command": f"python3 {hook_command}"
+    }
+
+    if "hooks" not in settings:
+        settings["hooks"] = {}
+    if "Stop" not in settings["hooks"]:
+        settings["hooks"]["Stop"] = []
+
+    stop_hooks = settings["hooks"]["Stop"]
+
+    for item in stop_hooks:
+        if "hooks" in item:
+            for h in item["hooks"]:
+                if "stop-hook" in h.get("command", "") and "do" in h.get("command", ""):
+                    h["command"] = f"python3 {hook_command}"
+                    return settings
+
+    stop_hooks.append({"hooks": [hook_entry]})
+    return settings
+
+def remove_hook(settings: dict) -> dict:
+    if "hooks" not in settings or "Stop" not in settings["hooks"]:
+        return settings
+
+    stop_hooks = settings["hooks"]["Stop"]
+    new_stop_hooks = []
+
+    for item in stop_hooks:
+        if "hooks" in item:
+            filtered = [h for h in item["hooks"]
+                       if "stop-hook" not in h.get("command", "")
+                       or "do" not in h.get("command", "")]
+            if filtered:
+                item["hooks"] = filtered
+                new_stop_hooks.append(item)
+        else:
+            new_stop_hooks.append(item)
+
+    settings["hooks"]["Stop"] = new_stop_hooks
+    if not settings["hooks"]["Stop"]:
+        del settings["hooks"]["Stop"]
+    if not settings["hooks"]:
+        del settings["hooks"]
+
+    return settings
+
+def install_models_json():
+    """Install ~/.codeagent/models.json if not exists"""
+    path = Path.home() / ".codeagent" / "models.json"
+    if path.exists():
+        print(f"⚠ {path} already exists, skipping")
+        return
+
+    path.parent.mkdir(parents=True, exist_ok=True)
+    with open(path, "w", encoding="utf-8") as f:
+        json.dump(MODELS_JSON_TEMPLATE, f, indent=2)
+    print(f"✓ Created {path}")
+
+def install():
+    src = Path(__file__).parent.resolve()
+    dest = Path.home() / ".claude" / "skills" / SKILL_NAME
+
+    dest.mkdir(parents=True, exist_ok=True)
+
+    exclude = {".git", "__pycache__", ".DS_Store", "install.py"}
+
+    for item in src.iterdir():
+        if item.name in exclude:
+            continue
+        target = dest / item.name
+        if target.exists():
+            if target.is_dir():
+                shutil.rmtree(target)
+            else:
+                target.unlink()
+        if item.is_dir():
+            shutil.copytree(item, target)
+        else:
+            shutil.copy2(item, target)
+
+    settings = load_settings()
+    settings = add_hook(settings)
+    save_settings(settings)
+
+    install_models_json()
+
+    print(f"✓ Installed to {dest}")
+    print(f"✓ Hook added to settings.json")
+
+def uninstall():
+    dest = Path.home() / ".claude" / "skills" / SKILL_NAME
+
+    settings = load_settings()
+    settings = remove_hook(settings)
+    save_settings(settings)
+    print(f"✓ Hook removed from settings.json")
+
+    if dest.exists():
+        shutil.rmtree(dest)
+        print(f"✓ Removed {dest}")
+    else:
+        print(f"⚠ {dest} not found")
+
+def main():
+    parser = argparse.ArgumentParser(description="Install/uninstall do skill")
+    parser.add_argument("--uninstall", "-u", action="store_true", help="Uninstall the skill")
+    args = parser.parse_args()
+
+    if args.uninstall:
+        uninstall()
+    else:
+        install()
+
+if __name__ == "__main__":
+    main()
--- a/skills/do/scripts/setup-do.py
+++ b/skills/do/scripts/setup-do.py
@@ -0,0 +1,85 @@
+#!/usr/bin/env python3
+import argparse
+import os
+import secrets
+import sys
+import time
+
+PHASE_NAMES = {
+    1: "Understand",
+    2: "Clarify",
+    3: "Design",
+    4: "Implement",
+    5: "Complete",
+}
+
+def phase_name_for(n: int) -> str:
+    return PHASE_NAMES.get(n, f"Phase {n}")
+
+def die(msg: str):
+    print(f"❌ {msg}", file=sys.stderr)
+    sys.exit(1)
+
+def main():
+    parser = argparse.ArgumentParser(
+        description="Creates (or overwrites) project state file: .claude/do.local.md"
+    )
+    parser.add_argument("--max-phases", type=int, default=5, help="Default: 5")
+    parser.add_argument(
+        "--completion-promise",
+        default="<promise>DO_COMPLETE</promise>",
+        help="Default: <promise>DO_COMPLETE</promise>",
+    )
+    parser.add_argument("--worktree", action="store_true", help="Enable worktree mode")
+    parser.add_argument("prompt", nargs="+", help="Task description")
+    args = parser.parse_args()
+
+    max_phases = args.max_phases
+    completion_promise = args.completion_promise
+    use_worktree = args.worktree
+    prompt = " ".join(args.prompt)
+
+    if max_phases < 1:
+        die("--max-phases must be a positive integer")
+
+    project_dir = os.environ.get("CLAUDE_PROJECT_DIR", os.getcwd())
+    state_dir = os.path.join(project_dir, ".claude")
+
+    task_id = f"{int(time.time())}-{os.getpid()}-{secrets.token_hex(4)}"
+    state_file = os.path.join(state_dir, f"do.{task_id}.local.md")
+
+    os.makedirs(state_dir, exist_ok=True)
+
+    phase_name = phase_name_for(1)
+
+    content = f"""---
+active: true
+current_phase: 1
+phase_name: "{phase_name}"
+max_phases: {max_phases}
+completion_promise: "{completion_promise}"
+use_worktree: {str(use_worktree).lower()}
+---
+
+# do loop state
+
+## Prompt
+{prompt}
+
+## Notes
+- Update frontmatter current_phase/phase_name as you progress
+- When complete, include the frontmatter completion_promise in your final output
+"""
+
+    with open(state_file, "w", encoding="utf-8") as f:
+        f.write(content)
+
+    print(f"Initialized: {state_file}")
+    print(f"task_id: {task_id}")
+    print(f"phase: 1/{max_phases} ({phase_name})")
+    print(f"completion_promise: {completion_promise}")
+    print(f"use_worktree: {use_worktree}")
+    print(f"export DO_TASK_ID={task_id}")
+
+if __name__ == "__main__":
+    main()
--- a/skills/do/scripts/setup-do.sh
+++ b/skills/do/scripts/setup-do.sh
@@ -1,115 +0,0 @@
-#!/usr/bin/env bash
-
-set -euo pipefail
-
-usage() {
-	cat <<'EOF'
-Usage: setup-do.sh [options] PROMPT...
-
-Creates (or overwrites) project state file:
-  .claude/do.local.md
-
-Options:
-  --max-phases N            Default: 7
-  --completion-promise STR  Default: <promise>DO_COMPLETE</promise>
-  -h, --help                Show this help
-EOF
-}
-
-die() {
-	echo "❌ $*" >&2
-	exit 1
-}
-
-phase_name_for() {
-	case "${1:-}" in
-	1) echo "Discovery" ;;
-	2) echo "Exploration" ;;
-	3) echo "Clarification" ;;
-	4) echo "Architecture" ;;
-	5) echo "Implementation" ;;
-	6) echo "Review" ;;
-	7) echo "Summary" ;;
-	*) echo "Phase ${1:-unknown}" ;;
-	esac
-}
-
-max_phases=7
-completion_promise="<promise>DO_COMPLETE</promise>"
-declare -a prompt_parts=()
-
-while [ $# -gt 0 ]; do
-	case "$1" in
-	-h|--help)
-		usage
-		exit 0
-		;;
-	--max-phases)
-		[ $# -ge 2 ] || die "--max-phases requires a value"
-		max_phases="$2"
-		shift 2
-		;;
-	--completion-promise)
-		[ $# -ge 2 ] || die "--completion-promise requires a value"
-		completion_promise="$2"
-		shift 2
-		;;
-	--)
-		shift
-		while [ $# -gt 0 ]; do
-			prompt_parts+=("$1")
-			shift
-		done
-		break
-		;;
-	-*)
-		die "Unknown argument: $1 (use --help)"
-		;;
-	*)
-		prompt_parts+=("$1")
-		shift
-		;;
-	esac
-done
-
-prompt="${prompt_parts[*]:-}"
-[ -n "$prompt" ] || die "PROMPT is required (use --help)"
-
-if ! [[ "$max_phases" =~ ^[0-9]+$ ]] || [ "$max_phases" -lt 1 ]; then
-	die "--max-phases must be a positive integer"
-fi
-
-project_dir="${CLAUDE_PROJECT_DIR:-$PWD}"
-state_dir="${project_dir}/.claude"
-
-task_id="$(date +%s)-$$-$(head -c 4 /dev/urandom | od -An -tx1 | tr -d ' \n')"
-state_file="${state_dir}/do.${task_id}.local.md"
-
-mkdir -p "$state_dir"
-
-phase_name="$(phase_name_for 1)"
-
-cat > "$state_file" << EOF
---
-active: true
-current_phase: 1
-phase_name: "$phase_name"
-max_phases: $max_phases
-completion_promise: "$completion_promise"
---
-
-# do loop state
-
-## Prompt
-$prompt
-
-## Notes
- Update frontmatter current_phase/phase_name as you progress
- When complete, include the frontmatter completion_promise in your final output
-EOF
-
-echo "Initialized: $state_file"
-echo "task_id: $task_id"
-echo "phase: 1/$max_phases ($phase_name)"
-echo "completion_promise: $completion_promise"
-echo "export DO_TASK_ID=$task_id"