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agent/claudecode/claude_usage.go

@@ -0,0 +1,663 @@
+package claudecode
+
+import (
+	"bytes"
+	"context"
+	"errors"
+	"fmt"
+	"io"
+	"log/slog"
+	"os"
+	"os/exec"
+	"regexp"
+	"strconv"
+	"strings"
+	"sync"
+	"time"
+	"unicode/utf8"
+
+	"github.com/chenhg5/cc-connect/core"
+	"github.com/creack/pty"
+)
+
+const (
+	claudeUsageSessionWindowSeconds = 5 * 60 * 60
+	claudeUsageWeekWindowSeconds    = 7 * 24 * 60 * 60
+	claudeUsagePollInterval         = 100 * time.Millisecond
+	claudeUsageStableFor            = 450 * time.Millisecond
+	claudeUsageActionGap            = 250 * time.Millisecond
+)
+
+var (
+	claudeUsagePercentRe    = regexp.MustCompile(`(?i)\b(\d{1,3})\s*%\s*used\b`)
+	claudeUsageResetLineRe  = regexp.MustCompile(`(?i)^resets\s+(.+?)\s*$`)
+	claudeUsageParenTZRe    = regexp.MustCompile(`^(.*?)\s*\(([^()]+)\)\s*$`)
+	claudeUsageWhitespaceRe = regexp.MustCompile(`[ \t]+`)
+	claudeUsageRuleLineRe   = regexp.MustCompile(`^[\p{Zs}\-─━_=]{4,}$`)
+)
+
+type claudeUsageProbeState struct {
+	promptResponses int
+	sentWake        bool
+	sentUsage       bool
+	sentEnterRetry  bool
+	sentUsageRetry  bool
+	lastActionAt    time.Time
+	usageSentAt     time.Time
+}
+
+func (a *Agent) GetUsage(ctx context.Context) (*core.UsageReport, error) {
+	if _, err := exec.LookPath("claude"); err != nil {
+		return nil, fmt.Errorf("claudecode: 'claude' CLI not found in PATH")
+	}
+
+	screen, err := a.runClaudeUsageProbe(ctx)
+	if err != nil {
+		return nil, err
+	}
+	return parseClaudeUsageReport(screen, time.Now())
+}
+
+func (a *Agent) runClaudeUsageProbe(ctx context.Context) (string, error) {
+	probeCtx, cancel := context.WithCancel(ctx)
+	defer cancel()
+
+	workDir, err := os.MkdirTemp("", "cc-connect-claude-usage-*")
+	if err != nil {
+		return "", fmt.Errorf("claudecode: create usage temp dir: %w", err)
+	}
+	defer os.RemoveAll(workDir)
+
+	args := []string{
+		"--tools", "",
+		"--permission-mode", "plan",
+		"--no-chrome",
+	}
+	cmd := exec.CommandContext(probeCtx, "claude", args...)
+	cmd.Dir = workDir
+
+	env := filterEnv(os.Environ(), "CLAUDECODE")
+	env = append(env, "DISABLE_TELEMETRY=true")
+	env = append(env, "DISABLE_COST_WARNINGS=true")
+	if extra := a.usageProbeEnv(); len(extra) > 0 {
+		env = core.MergeEnv(env, extra)
+	}
+	cmd.Env = env
+
+	var stderr bytes.Buffer
+	cmd.Stderr = &stderr
+
+	ptmx, err := pty.StartWithSize(cmd, &pty.Winsize{Rows: 40, Cols: 120})
+	if err != nil {
+		return "", fmt.Errorf("claudecode: start claude usage probe: %w", err)
+	}
+
+	var waitErr error
+	processDone := make(chan struct{})
+	go func() {
+		waitErr = cmd.Wait()
+		close(processDone)
+	}()
+
+	terminal := newClaudeUsageTerminal()
+	readDone := make(chan error, 1)
+	go func() {
+		buf := make([]byte, 4096)
+		for {
+			n, err := ptmx.Read(buf)
+			if n > 0 {
+				terminal.Write(buf[:n])
+			}
+			if err != nil {
+				if errors.Is(err, io.EOF) || errors.Is(err, os.ErrClosed) {
+					readDone <- nil
+				} else {
+					readDone <- err
+				}
+				return
+			}
+		}
+	}()
+
+	defer func() {
+		if err := ptmx.Close(); err != nil {
+			slog.Warn("claudeSession: close ptmx", "error", err)
+		}
+		cancel()
+		// Wait for reader goroutine to finish so it is never leaked.
+		<-readDone
+		select {
+		case <-processDone:
+		case <-time.After(2 * time.Second):
+			if cmd.Process != nil {
+				if err := cmd.Process.Kill(); err != nil {
+					slog.Warn("claudeSession: kill process", "error", err)
+				}
+			}
+			<-processDone
+		}
+	}()
+
+	ticker := time.NewTicker(claudeUsagePollInterval)
+	defer ticker.Stop()
+
+	var (
+		state       claudeUsageProbeState
+		lastScreen  string
+		lastChange  = time.Now()
+		usageScreen string
+	)
+
+	for {
+		select {
+		case <-probeCtx.Done():
+			if usageScreen != "" {
+				return usageScreen, nil
+			}
+			if screenErr := detectClaudeUsageOutputError(lastScreen, stderr.String()); screenErr != nil {
+				return "", screenErr
+			}
+			return "", fmt.Errorf("claudecode: timed out waiting for Claude Code /usage panel: %w", probeCtx.Err())
+		case err := <-readDone:
+			if err != nil {
+				return "", fmt.Errorf("claudecode: read Claude Code /usage output: %w", err)
+			}
+		case <-processDone:
+			if usageScreen != "" {
+				return usageScreen, nil
+			}
+			if screenErr := detectClaudeUsageOutputError(lastScreen, stderr.String()); screenErr != nil {
+				return "", screenErr
+			}
+			if waitErr != nil {
+				return "", fmt.Errorf("claudecode: Claude Code exited before /usage rendered: %w", waitErr)
+			}
+			return "", fmt.Errorf("claudecode: Claude Code exited before /usage rendered")
+		case <-ticker.C:
+			screen := normalizeClaudeUsageText(terminal.String())
+			if screen != lastScreen {
+				lastScreen = screen
+				lastChange = time.Now()
+			}
+			if usageReady(lastScreen) {
+				if usageScreen == "" {
+					usageScreen = lastScreen
+				}
+			}
+			if screenErr := detectClaudeUsageOutputError(lastScreen, stderr.String()); screenErr != nil {
+				return "", screenErr
+			}
+			if usageScreen != "" && time.Since(lastChange) >= claudeUsageStableFor {
+				return usageScreen, nil
+			}
+			if action := nextClaudeUsageProbeAction(lastScreen, &state, time.Now()); action != "" {
+				if _, err := io.WriteString(ptmx, action); err != nil {
+					return "", fmt.Errorf("claudecode: write Claude Code /usage probe input: %w", err)
+				}
+			}
+		}
+	}
+}
+
+func (a *Agent) usageProbeEnv() []string {
+	a.mu.Lock()
+	defer a.mu.Unlock()
+	return a.runtimeEnvLocked()
+}
+
+func nextClaudeUsageProbeAction(screen string, state *claudeUsageProbeState, now time.Time) string {
+	if now.Sub(state.lastActionAt) < claudeUsageActionGap {
+		return ""
+	}
+
+	if action := promptActionForScreen(screen); action != "" && state.promptResponses < 6 {
+		state.promptResponses++
+		state.lastActionAt = now
+		return action
+	}
+
+	if usageReady(screen) {
+		return ""
+	}
+
+	if !state.sentWake {
+		state.sentWake = true
+		state.lastActionAt = now
+		return "\r"
+	}
+
+	if !state.sentUsage {
+		state.sentUsage = true
+		state.usageSentAt = now
+		state.lastActionAt = now
+		return "/usage\r"
+	}
+
+	if !state.sentEnterRetry && now.Sub(state.usageSentAt) >= 900*time.Millisecond {
+		state.sentEnterRetry = true
+		state.lastActionAt = now
+		return "\r"
+	}
+
+	if !state.sentUsageRetry && now.Sub(state.usageSentAt) >= 1500*time.Millisecond {
+		state.sentUsageRetry = true
+		state.lastActionAt = now
+		return "/usage\r"
+	}
+
+	return ""
+}
+
+func promptActionForScreen(screen string) string {
+	lower := strings.ToLower(screen)
+	if lower == "" {
+		return ""
+	}
+	if strings.Contains(lower, "quick safety check") || strings.Contains(lower, "yes, i trust this folder") {
+		return "\r"
+	}
+	if (strings.Contains(lower, "telemetry") || strings.Contains(lower, "help improve") || strings.Contains(lower, "usage data")) &&
+		(strings.Contains(lower, "2. no") || strings.Contains(lower, "2. disable") || strings.Contains(lower, "2. don't")) {
+		return "\x1b[B\r"
+	}
+	if strings.Contains(lower, "enter to confirm") && !usageReady(lower) {
+		return "\r"
+	}
+	return ""
+}
+
+func usageReady(screen string) bool {
+	lower := strings.ToLower(screen)
+	return strings.Contains(lower, "current session") &&
+		strings.Contains(lower, "current week") &&
+		strings.Contains(lower, "resets") &&
+		claudeUsagePercentRe.MatchString(screen)
+}
+
+func normalizeClaudeUsageText(raw string) string {
+	raw = strings.ReplaceAll(raw, "\r", "\n")
+	lines := strings.Split(raw, "\n")
+
+	out := make([]string, 0, len(lines))
+	lastBlank := false
+	for _, line := range lines {
+		line = strings.TrimSpace(line)
+		if line == "" {
+			if !lastBlank {
+				out = append(out, "")
+				lastBlank = true
+			}
+			continue
+		}
+		line = claudeUsageWhitespaceRe.ReplaceAllString(line, " ")
+		if claudeUsageRuleLineRe.MatchString(line) {
+			continue
+		}
+		out = append(out, line)
+		lastBlank = false
+	}
+	return strings.TrimSpace(strings.Join(out, "\n"))
+}
+
+func parseClaudeUsageReport(text string, now time.Time) (*core.UsageReport, error) {
+	text = normalizeClaudeUsageText(text)
+	if text == "" {
+		return nil, fmt.Errorf("claudecode: Claude Code /usage produced empty output")
+	}
+	if err := detectClaudeUsageOutputError(text, ""); err != nil {
+		return nil, err
+	}
+
+	report := &core.UsageReport{
+		Provider: "claudecode",
+	}
+
+	lines := strings.Split(text, "\n")
+	session, err := parseClaudeUsageWindow(lines, "Current session", claudeUsageSessionWindowSeconds, now)
+	if err != nil {
+		return nil, err
+	}
+	week, err := parseClaudeUsageWindow(lines, "Current week", claudeUsageWeekWindowSeconds, now)
+	if err != nil {
+		return nil, err
+	}
+
+	report.Buckets = []core.UsageBucket{{
+		Name:    "Usage",
+		Allowed: true,
+		Windows: []core.UsageWindow{session, week},
+	}}
+	return report, nil
+}
+
+func parseClaudeUsageWindow(lines []string, header string, windowSeconds int, now time.Time) (core.UsageWindow, error) {
+	start := -1
+	headerLower := strings.ToLower(header)
+	for i, line := range lines {
+		lower := strings.ToLower(strings.TrimSpace(line))
+		if strings.HasPrefix(lower, headerLower) {
+			start = i
+			break
+		}
+	}
+	if start < 0 {
+		return core.UsageWindow{}, fmt.Errorf("claudecode: missing %s block in Claude Code /usage output", header)
+	}
+
+	var (
+		usedPercent *int
+		resetRaw    string
+	)
+	for i := start + 1; i < len(lines); i++ {
+		line := strings.TrimSpace(lines[i])
+		if line == "" {
+			continue
+		}
+		lower := strings.ToLower(line)
+		if i > start+1 && (strings.HasPrefix(lower, "current ") || strings.HasPrefix(lower, "extra usage")) {
+			break
+		}
+		if usedPercent == nil {
+			if m := claudeUsagePercentRe.FindStringSubmatch(line); len(m) == 2 {
+				v, _ := strconv.Atoi(m[1])
+				usedPercent = &v
+				continue
+			}
+		}
+		if resetRaw == "" {
+			if m := claudeUsageResetLineRe.FindStringSubmatch(line); len(m) == 2 {
+				resetRaw = strings.TrimSpace(m[1])
+			}
+		}
+	}
+
+	if usedPercent == nil {
+		return core.UsageWindow{}, fmt.Errorf("claudecode: missing usage percentage in %s block", header)
+	}
+
+	window := core.UsageWindow{
+		Name:          header,
+		UsedPercent:   *usedPercent,
+		WindowSeconds: windowSeconds,
+	}
+
+	if resetRaw != "" {
+		resetAt, err := parseClaudeUsageResetTime(resetRaw, now)
+		if err == nil {
+			resetAfter := int(resetAt.Sub(now).Round(time.Second).Seconds())
+			if resetAfter < 0 {
+				resetAfter = 0
+			}
+			window.ResetAfterSeconds = resetAfter
+			window.ResetAtUnix = resetAt.Unix()
+		}
+	}
+
+	return window, nil
+}
+
+func parseClaudeUsageResetTime(raw string, now time.Time) (time.Time, error) {
+	label := strings.TrimSpace(raw)
+	loc := now.Location()
+	if m := claudeUsageParenTZRe.FindStringSubmatch(label); len(m) == 3 {
+		label = strings.TrimSpace(m[1])
+		tzName := strings.TrimSpace(m[2])
+		tzLoc, err := time.LoadLocation(tzName)
+		if err != nil {
+			return time.Time{}, fmt.Errorf("unknown timezone %q", tzName)
+		}
+		loc = tzLoc
+	}
+
+	nowInLoc := now.In(loc)
+	for _, layout := range []string{"3:04pm", "3pm"} {
+		parsed, err := time.ParseInLocation(layout, label, loc)
+		if err != nil {
+			continue
+		}
+		resetAt := time.Date(nowInLoc.Year(), nowInLoc.Month(), nowInLoc.Day(), parsed.Hour(), parsed.Minute(), 0, 0, loc)
+		if !resetAt.After(nowInLoc) {
+			resetAt = resetAt.Add(24 * time.Hour)
+		}
+		return resetAt, nil
+	}
+
+	for _, layout := range []string{"Jan 2, 3:04pm", "Jan 2, 3pm"} {
+		parsed, err := time.ParseInLocation(layout, label, loc)
+		if err != nil {
+			continue
+		}
+		resetAt := time.Date(nowInLoc.Year(), parsed.Month(), parsed.Day(), parsed.Hour(), parsed.Minute(), 0, 0, loc)
+		if !resetAt.After(nowInLoc) {
+			resetAt = resetAt.AddDate(1, 0, 0)
+		}
+		return resetAt, nil
+	}
+
+	return time.Time{}, fmt.Errorf("unsupported reset time %q", raw)
+}
+
+func detectClaudeUsageOutputError(screen, stderr string) error {
+	joined := strings.ToLower(strings.TrimSpace(screen + "\n" + stderr))
+	switch {
+	case joined == "":
+		return nil
+	case strings.Contains(joined, "unknown command") && strings.Contains(joined, "/usage"):
+		return fmt.Errorf("claudecode: this Claude Code version does not support /usage; please upgrade Claude Code")
+	case strings.Contains(joined, "auth login") || strings.Contains(joined, "not logged in") || strings.Contains(joined, "sign in"):
+		return fmt.Errorf("claudecode: Claude Code is not logged in for /usage; run `claude auth login`")
+	case strings.Contains(joined, "/usage") && (strings.Contains(joined, "not available") || strings.Contains(joined, "not supported") || strings.Contains(joined, "subscription")):
+		return fmt.Errorf("claudecode: current Claude account does not support /usage")
+	default:
+		return nil
+	}
+}
+
+type claudeUsageTerminal struct {
+	mu    sync.RWMutex
+	lines [][]rune
+	row   int
+	col   int
+}
+
+func newClaudeUsageTerminal() *claudeUsageTerminal {
+	return &claudeUsageTerminal{
+		lines: [][]rune{nil},
+	}
+}
+
+func (t *claudeUsageTerminal) Write(p []byte) {
+	t.mu.Lock()
+	defer t.mu.Unlock()
+
+	for i := 0; i < len(p); {
+		switch p[i] {
+		case 0x1b:
+			next := t.consumeEscape(p[i:])
+			if next <= 0 {
+				i++
+			} else {
+				i += next
+			}
+		case '\r':
+			t.col = 0
+			i++
+		case '\n':
+			t.row++
+			t.ensureRow(t.row)
+			i++
+		case '\b':
+			if t.col > 0 {
+				t.col--
+			}
+			i++
+		case '\t':
+			advance := 4 - (t.col % 4)
+			for j := 0; j < advance; j++ {
+				t.writeRune(' ')
+			}
+			i++
+		default:
+			if p[i] < 0x20 || p[i] == 0x7f {
+				i++
+				continue
+			}
+			r, size := utf8.DecodeRune(p[i:])
+			if r == utf8.RuneError && size == 1 {
+				i++
+				continue
+			}
+			t.writeRune(r)
+			i += size
+		}
+	}
+}
+
+func (t *claudeUsageTerminal) String() string {
+	t.mu.RLock()
+	defer t.mu.RUnlock()
+
+	lines := make([]string, 0, len(t.lines))
+	for _, line := range t.lines {
+		lines = append(lines, strings.TrimRight(string(line), " "))
+	}
+	return strings.Join(lines, "\n")
+}
+
+func (t *claudeUsageTerminal) consumeEscape(p []byte) int {
+	if len(p) < 2 {
+		return len(p)
+	}
+	switch p[1] {
+	case '[':
+		for i := 2; i < len(p); i++ {
+			if p[i] >= '@' && p[i] <= '~' {
+				t.applyCSI(string(p[2:i]), p[i])
+				return i + 1
+			}
+		}
+		return len(p)
+	case ']':
+		for i := 2; i < len(p); i++ {
+			if p[i] == '\a' {
+				return i + 1
+			}
+			if p[i] == 0x1b && i+1 < len(p) && p[i+1] == '\\' {
+				return i + 2
+			}
+		}
+		return len(p)
+	default:
+		return 2
+	}
+}
+
+func (t *claudeUsageTerminal) applyCSI(params string, final byte) {
+	switch final {
+	case 'A', 'B', 'C', 'D':
+		n := parseCSIInt(params, 1)
+		switch final {
+		case 'A':
+			t.row -= n
+			if t.row < 0 {
+				t.row = 0
+			}
+		case 'B':
+			t.row += n
+			t.ensureRow(t.row)
+		case 'C':
+			t.col += n
+		case 'D':
+			t.col -= n
+			if t.col < 0 {
+				t.col = 0
+			}
+		}
+	case 'H', 'f':
+		row, col := parseCSICursor(params)
+		if row < 0 {
+			row = 0
+		}
+		if col < 0 {
+			col = 0
+		}
+		t.row, t.col = row, col
+		t.ensureRow(t.row)
+	case 'J':
+		if params == "2" || params == "" {
+			t.lines = [][]rune{nil}
+			t.row, t.col = 0, 0
+		}
+	case 'K':
+		t.ensureRow(t.row)
+		switch params {
+		case "", "0":
+			if t.col < len(t.lines[t.row]) {
+				t.lines[t.row] = t.lines[t.row][:t.col]
+			}
+		case "2":
+			t.lines[t.row] = nil
+			t.col = 0
+		}
+	default:
+	}
+}
+
+func (t *claudeUsageTerminal) writeRune(r rune) {
+	if t.row >= maxTerminalRows || t.col >= maxTerminalCols {
+		return
+	}
+	t.ensureCell(t.row, t.col)
+	if t.row < len(t.lines) && t.col < len(t.lines[t.row]) {
+		t.lines[t.row][t.col] = r
+	}
+	t.col++
+}
+
+const maxTerminalRows = 500
+const maxTerminalCols = 500
+
+func (t *claudeUsageTerminal) ensureRow(row int) {
+	if row >= maxTerminalRows {
+		return
+	}
+	for len(t.lines) <= row {
+		t.lines = append(t.lines, nil)
+	}
+}
+
+func (t *claudeUsageTerminal) ensureCell(row, col int) {
+	if row >= maxTerminalRows || col >= maxTerminalCols {
+		return
+	}
+	t.ensureRow(row)
+	for len(t.lines[row]) <= col {
+		t.lines[row] = append(t.lines[row], ' ')
+	}
+}
+
+func parseCSIInt(raw string, fallback int) int {
+	raw = strings.TrimPrefix(raw, "?")
+	if raw == "" {
+		return fallback
+	}
+	n, err := strconv.Atoi(raw)
+	if err != nil || n <= 0 {
+		return fallback
+	}
+	return n
+}
+
+func parseCSICursor(raw string) (int, int) {
+	raw = strings.TrimPrefix(raw, "?")
+	if raw == "" {
+		return 0, 0
+	}
+	parts := strings.Split(raw, ";")
+	row := parseCSIInt(parts[0], 1) - 1
+	col := 0
+	if len(parts) > 1 {
+		col = parseCSIInt(parts[1], 1) - 1
+	}
+	return row, col
+}

agent/claudecode/claude_usage_test.go

@@ -0,0 +1,271 @@
+package claudecode
+
+import (
+	"context"
+	"os"
+	"strings"
+	"testing"
+	"time"
+)
+
+func TestSanitizeClaudeUsageOutput_RendersCursorMoves(t *testing.T) {
+	raw := "" +
+		"\x1b[?2026h\rSettings:\x1b[1CStatus\x1b[1CConfig\x1b[1CUsage (tab to cycle)\r\n" +
+		"\x1b]8;;https://code.claude.com/docs/en/security\aSecurity guide\x1b]8;;\a\r\n" +
+		"Current session\r\n" +
+		"\x1b[32m1% used\x1b[0m\r\n"
+
+	terminal := newClaudeUsageTerminal()
+	terminal.Write([]byte(raw))
+	got := normalizeClaudeUsageText(terminal.String())
+	if strings.Contains(got, "\x1b") {
+		t.Fatalf("sanitizeClaudeUsageOutput still contains escape codes: %q", got)
+	}
+	if !strings.Contains(got, "Settings: Status Config Usage (tab to cycle)") {
+		t.Fatalf("sanitized output missing spaced header: %q", got)
+	}
+	if !strings.Contains(got, "Security guide") {
+		t.Fatalf("sanitized output missing link text: %q", got)
+	}
+}
+
+func TestParseClaudeUsageReport_Success(t *testing.T) {
+	loc := mustLoadLocation(t, "Asia/Seoul")
+	now := time.Date(2026, time.December, 22, 12, 0, 0, 0, loc)
+	text := strings.TrimSpace(`
+Current session
+1% used
+Resets 3:59pm (Asia/Seoul)
+
+Current week (all models)
+2% used
+Resets Dec 23, 4:59pm (Asia/Seoul)
+
+Extra usage
+Extra usage not enabled
+`)
+
+	report, err := parseClaudeUsageReport(text, now)
+	if err != nil {
+		t.Fatalf("parseClaudeUsageReport returned error: %v", err)
+	}
+	if report.Provider != "claudecode" {
+		t.Fatalf("Provider = %q, want claudecode", report.Provider)
+	}
+	if len(report.Buckets) != 1 {
+		t.Fatalf("Buckets = %d, want 1", len(report.Buckets))
+	}
+	if len(report.Buckets[0].Windows) != 2 {
+		t.Fatalf("Windows = %d, want 2", len(report.Buckets[0].Windows))
+	}
+
+	session := report.Buckets[0].Windows[0]
+	if session.Name != "Current session" {
+		t.Fatalf("session.Name = %q", session.Name)
+	}
+	if session.WindowSeconds != 18000 {
+		t.Fatalf("session.WindowSeconds = %d, want 18000", session.WindowSeconds)
+	}
+	if session.UsedPercent != 1 {
+		t.Fatalf("session.UsedPercent = %d, want 1", session.UsedPercent)
+	}
+	if session.ResetAfterSeconds != 14340 {
+		t.Fatalf("session.ResetAfterSeconds = %d, want 14340", session.ResetAfterSeconds)
+	}
+
+	week := report.Buckets[0].Windows[1]
+	if week.Name != "Current week" {
+		t.Fatalf("week.Name = %q", week.Name)
+	}
+	if week.WindowSeconds != 604800 {
+		t.Fatalf("week.WindowSeconds = %d, want 604800", week.WindowSeconds)
+	}
+	if week.UsedPercent != 2 {
+		t.Fatalf("week.UsedPercent = %d, want 2", week.UsedPercent)
+	}
+	if week.ResetAfterSeconds != 104340 {
+		t.Fatalf("week.ResetAfterSeconds = %d, want 104340", week.ResetAfterSeconds)
+	}
+}
+
+func TestParseClaudeUsageReport_MissingOptionalFields(t *testing.T) {
+	loc := mustLoadLocation(t, "Asia/Seoul")
+	now := time.Date(2026, time.December, 22, 12, 0, 0, 0, loc)
+	text := strings.TrimSpace(`
+Current session
+15% used
+Resets 3:00pm (Asia/Seoul)
+
+Current week
+47% used
+Resets Dec 23, 11:30am (Asia/Seoul)
+`)
+
+	report, err := parseClaudeUsageReport(text, now)
+	if err != nil {
+		t.Fatalf("parseClaudeUsageReport returned error: %v", err)
+	}
+	if report.Email != "" {
+		t.Fatalf("Email = %q, want empty", report.Email)
+	}
+	if report.AccountID != "" {
+		t.Fatalf("AccountID = %q, want empty", report.AccountID)
+	}
+	if report.UserID != "" {
+		t.Fatalf("UserID = %q, want empty", report.UserID)
+	}
+	if report.Plan != "" {
+		t.Fatalf("Plan = %q, want empty", report.Plan)
+	}
+	if len(report.Buckets) != 1 || len(report.Buckets[0].Windows) != 2 {
+		t.Fatalf("unexpected bucket layout: %+v", report.Buckets)
+	}
+}
+
+func TestParseClaudeUsageReport_UpgradeRequired(t *testing.T) {
+	text := "Unknown command: /usage"
+	_, err := parseClaudeUsageReport(text, time.Now())
+	if err == nil || !strings.Contains(strings.ToLower(err.Error()), "upgrade") {
+		t.Fatalf("err = %v, want upgrade guidance", err)
+	}
+}
+
+func TestParseClaudeUsageReport_LoginRequired(t *testing.T) {
+	text := "Please run `claude auth login` to continue."
+	_, err := parseClaudeUsageReport(text, time.Now())
+	if err == nil || !strings.Contains(strings.ToLower(err.Error()), "login") {
+		t.Fatalf("err = %v, want login guidance", err)
+	}
+}
+
+func TestParseClaudeUsageReport_MissingWindowFields(t *testing.T) {
+	loc := mustLoadLocation(t, "Asia/Seoul")
+	now := time.Date(2026, time.December, 22, 12, 0, 0, 0, loc)
+	text := strings.TrimSpace(`
+Current session
+Resets 3:00pm (Asia/Seoul)
+
+Current week
+47% used
+Resets Dec 23, 11:30am (Asia/Seoul)
+`)
+
+	_, err := parseClaudeUsageReport(text, now)
+	if err == nil || !strings.Contains(strings.ToLower(err.Error()), "current session") {
+		t.Fatalf("err = %v, want current session parse error", err)
+	}
+}
+
+func TestParseClaudeUsageReport_UnknownResetTimeDoesNotFail(t *testing.T) {
+	loc := mustLoadLocation(t, "America/Los_Angeles")
+	now := time.Date(2026, time.March, 30, 11, 0, 0, 0, loc)
+	text := strings.TrimSpace(`
+Current session
+14% used
+Resets later today somehow
+
+Current week
+33% used
+Resets Apr 2, 4pm (America/Los_Angeles)
+`)
+
+	report, err := parseClaudeUsageReport(text, now)
+	if err != nil {
+		t.Fatalf("parseClaudeUsageReport returned error: %v", err)
+	}
+	if len(report.Buckets) != 1 || len(report.Buckets[0].Windows) != 2 {
+		t.Fatalf("unexpected bucket layout: %+v", report.Buckets)
+	}
+	session := report.Buckets[0].Windows[0]
+	if session.UsedPercent != 14 {
+		t.Fatalf("session.UsedPercent = %d, want 14", session.UsedPercent)
+	}
+	if session.ResetAfterSeconds != 0 || session.ResetAtUnix != 0 {
+		t.Fatalf("session reset should be unknown, got %+v", session)
+	}
+}
+
+func TestParseClaudeUsageReport_MissingResetTimeDoesNotFail(t *testing.T) {
+	loc := mustLoadLocation(t, "America/Los_Angeles")
+	now := time.Date(2026, time.March, 30, 11, 0, 0, 0, loc)
+	text := strings.TrimSpace(`
+Current session
+14% used
+
+Current week
+33% used
+Resets Apr 2, 4pm (America/Los_Angeles)
+`)
+
+	report, err := parseClaudeUsageReport(text, now)
+	if err != nil {
+		t.Fatalf("parseClaudeUsageReport returned error: %v", err)
+	}
+	session := report.Buckets[0].Windows[0]
+	if session.UsedPercent != 14 {
+		t.Fatalf("session.UsedPercent = %d, want 14", session.UsedPercent)
+	}
+	if session.ResetAfterSeconds != 0 || session.ResetAtUnix != 0 {
+		t.Fatalf("session reset should be absent, got %+v", session)
+	}
+}
+
+func TestParseClaudeUsageResetTime_AllowsWholeHourWithTimezone(t *testing.T) {
+	loc := mustLoadLocation(t, "America/Los_Angeles")
+	now := time.Date(2026, time.March, 30, 11, 0, 0, 0, loc)
+
+	resetAt, err := parseClaudeUsageResetTime("2pm (America/Los_Angeles)", now)
+	if err != nil {
+		t.Fatalf("parseClaudeUsageResetTime returned error: %v", err)
+	}
+
+	want := time.Date(2026, time.March, 30, 14, 0, 0, 0, loc)
+	if !resetAt.Equal(want) {
+		t.Fatalf("resetAt = %v, want %v", resetAt, want)
+	}
+}
+
+func TestParseClaudeUsageResetTime_AllowsMonthDayWholeHour(t *testing.T) {
+	loc := mustLoadLocation(t, "America/Los_Angeles")
+	now := time.Date(2026, time.March, 30, 11, 0, 0, 0, loc)
+
+	resetAt, err := parseClaudeUsageResetTime("Apr 2, 4pm (America/Los_Angeles)", now)
+	if err != nil {
+		t.Fatalf("parseClaudeUsageResetTime returned error: %v", err)
+	}
+
+	want := time.Date(2026, time.April, 2, 16, 0, 0, 0, loc)
+	if !resetAt.Equal(want) {
+		t.Fatalf("resetAt = %v, want %v", resetAt, want)
+	}
+}
+
+func TestAgentGetUsageSmoke(t *testing.T) {
+	if os.Getenv("CC_CONNECT_SMOKE_CLAUDE_USAGE") == "" {
+		t.Skip("set CC_CONNECT_SMOKE_CLAUDE_USAGE=1 to run")
+	}
+	if _, err := os.Stat("/usr/bin/env"); err != nil {
+		t.Skipf("environment not suitable: %v", err)
+	}
+
+	a := &Agent{workDir: ".", mode: "plan"}
+	ctx, cancel := context.WithTimeout(context.Background(), 15*time.Second)
+	defer cancel()
+
+	report, err := a.GetUsage(ctx)
+	if err != nil {
+		t.Fatalf("GetUsage returned error: %v", err)
+	}
+	if report == nil || len(report.Buckets) == 0 {
+		t.Fatalf("unexpected empty report: %+v", report)
+	}
+}
+
+func mustLoadLocation(t *testing.T, name string) *time.Location {
+	t.Helper()
+	loc, err := time.LoadLocation(name)
+	if err != nil {
+		t.Fatalf("LoadLocation(%q): %v", name, err)
+	}
+	return loc
+}

agent/claudecode/claudecode_model_test.go

@@ -0,0 +1,57 @@
+package claudecode
+
+import (
+	"testing"
+
+	"github.com/chenhg5/cc-connect/core"
+)
+
+func TestConfiguredModels_BoundaryConditions(t *testing.T) {
+	a := &Agent{
+		providers: []core.ProviderConfig{
+			{Models: []core.ModelOption{{Name: "first"}}},
+			{Models: []core.ModelOption{{Name: "second"}}},
+		},
+	}
+
+	tests := []struct {
+		name      string
+		activeIdx int
+		wantNil   bool
+		wantName  string
+	}{
+		{name: "negative index", activeIdx: -1, wantNil: true},
+		{name: "out of range", activeIdx: 2, wantNil: true},
+		{name: "valid index", activeIdx: 1, wantName: "second"},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			a.activeIdx = tt.activeIdx
+			got := a.configuredModels()
+			if tt.wantNil {
+				if got != nil {
+					t.Fatalf("configuredModels() = %v, want nil", got)
+				}
+				return
+			}
+			if len(got) != 1 || got[0].Name != tt.wantName {
+				t.Fatalf("configuredModels() = %v, want %q", got, tt.wantName)
+			}
+		})
+	}
+}
+
+func TestGetModel_PrefersActiveProviderModel(t *testing.T) {
+	a := &Agent{
+		model: "sonnet",
+		providers: []core.ProviderConfig{
+			{Name: "anthropic", Model: "opus"},
+		},
+		activeIdx: 0,
+	}
+
+	if got := a.GetModel(); got != "opus" {
+		t.Fatalf("GetModel() = %q, want opus", got)
+	}
+}

agent/claudecode/claudecode_test.go

@@ -0,0 +1,752 @@
+package claudecode
+
+import (
+	"os"
+	"path/filepath"
+	"reflect"
+	"runtime"
+	"testing"
+
+	"github.com/chenhg5/cc-connect/core"
+)
+
+func TestNew_ParsesRunAsUserAndRunAsEnv(t *testing.T) {
+	opts := map[string]any{
+		"work_dir":    "/tmp/claudecode-test",
+		"run_as_user": "partseeker-coder",
+		"run_as_env":  []any{"PGSSLROOTCERT", "PGSSLMODE"},
+	}
+	a, err := New(opts)
+	if err != nil {
+		t.Fatalf("New returned error: %v", err)
+	}
+	ag, ok := a.(*Agent)
+	if !ok {
+		t.Fatalf("agent is not *Agent: %T", a)
+	}
+	if ag.spawnOpts.RunAsUser != "partseeker-coder" {
+		t.Errorf("spawnOpts.RunAsUser = %q, want %q", ag.spawnOpts.RunAsUser, "partseeker-coder")
+	}
+	if got := ag.spawnOpts.EnvAllowlist; len(got) != 2 || got[0] != "PGSSLROOTCERT" || got[1] != "PGSSLMODE" {
+		t.Errorf("spawnOpts.EnvAllowlist = %v, want [PGSSLROOTCERT PGSSLMODE]", got)
+	}
+}
+
+func TestNew_RunAsUserSkipsClaudeLookPath(t *testing.T) {
+	// With run_as_user set, the supervisor's PATH lookup for "claude" is
+	// skipped because the target user's PATH is what matters. Verify that
+	// New() doesn't fail even when claude isn't on this test process's PATH.
+	opts := map[string]any{
+		"work_dir":    "/tmp/claudecode-test",
+		"run_as_user": "target-that-definitely-exists",
+	}
+	// Note: this test relies on New() NOT calling exec.LookPath("claude")
+	// when run_as_user is set. If claude IS on PATH in the test env,
+	// either branch of the code returns success and the test still passes.
+	if _, err := New(opts); err != nil {
+		// The only other reason New() could fail for these opts is the
+		// LookPath check — fail loudly if that's what happened.
+		t.Errorf("New with run_as_user returned error (LookPath not skipped?): %v", err)
+	}
+	_ = core.AgentSystemPrompt // keep the core import used
+}
+
+func TestParseUserQuestions_ValidInput(t *testing.T) {
+	input := map[string]any{
+		"questions": []any{
+			map[string]any{
+				"question":    "Which database?",
+				"header":      "Setup",
+				"multiSelect": false,
+				"options": []any{
+					map[string]any{"label": "PostgreSQL", "description": "Production"},
+					map[string]any{"label": "SQLite", "description": "Dev"},
+				},
+			},
+		},
+	}
+	qs := parseUserQuestions(input)
+	if len(qs) != 1 {
+		t.Fatalf("expected 1 question, got %d", len(qs))
+	}
+	q := qs[0]
+	if q.Question != "Which database?" {
+		t.Errorf("question = %q", q.Question)
+	}
+	if q.Header != "Setup" {
+		t.Errorf("header = %q", q.Header)
+	}
+	if q.MultiSelect {
+		t.Error("expected multiSelect=false")
+	}
+	if len(q.Options) != 2 {
+		t.Fatalf("expected 2 options, got %d", len(q.Options))
+	}
+	if q.Options[0].Label != "PostgreSQL" {
+		t.Errorf("option[0].label = %q", q.Options[0].Label)
+	}
+	if q.Options[1].Description != "Dev" {
+		t.Errorf("option[1].description = %q", q.Options[1].Description)
+	}
+}
+
+func TestParseUserQuestions_EmptyInput(t *testing.T) {
+	qs := parseUserQuestions(map[string]any{})
+	if len(qs) != 0 {
+		t.Errorf("expected 0 questions, got %d", len(qs))
+	}
+}
+
+func TestParseUserQuestions_NoQuestionText(t *testing.T) {
+	input := map[string]any{
+		"questions": []any{
+			map[string]any{"header": "Setup"},
+		},
+	}
+	qs := parseUserQuestions(input)
+	if len(qs) != 0 {
+		t.Errorf("expected 0 questions (no question text), got %d", len(qs))
+	}
+}
+
+func TestParseUserQuestions_MultiSelect(t *testing.T) {
+	input := map[string]any{
+		"questions": []any{
+			map[string]any{
+				"question":    "Select features",
+				"multiSelect": true,
+				"options": []any{
+					map[string]any{"label": "Auth"},
+					map[string]any{"label": "Logging"},
+				},
+			},
+		},
+	}
+	qs := parseUserQuestions(input)
+	if len(qs) != 1 {
+		t.Fatalf("expected 1 question, got %d", len(qs))
+	}
+	if !qs[0].MultiSelect {
+		t.Error("expected multiSelect=true")
+	}
+}
+
+func TestNormalizePermissionMode(t *testing.T) {
+	tests := []struct {
+		input string
+		want  string
+	}{
+		// dontAsk aliases
+		{"dontAsk", "dontAsk"},
+		{"dontask", "dontAsk"},
+		{"dont-ask", "dontAsk"},
+		{"dont_ask", "dontAsk"},
+		// auto
+		{"auto", "auto"},
+		// bypassPermissions aliases
+		{"bypassPermissions", "bypassPermissions"},
+		{"yolo", "bypassPermissions"},
+		// acceptEdits aliases
+		{"acceptEdits", "acceptEdits"},
+		{"edit", "acceptEdits"},
+		// plan
+		{"plan", "plan"},
+		// default fallback
+		{"", "default"},
+		{"unknown", "default"},
+	}
+	for _, tt := range tests {
+		got := normalizePermissionMode(tt.input)
+		if got != tt.want {
+			t.Errorf("normalizePermissionMode(%q) = %q, want %q", tt.input, got, tt.want)
+		}
+	}
+}
+
+func TestClaudeSessionSetLiveMode(t *testing.T) {
+	cs := &claudeSession{}
+	cs.setPermissionMode("default")
+	if cs.autoApprove.Load() || cs.acceptEditsOnly.Load() || cs.dontAsk.Load() {
+		t.Fatal("expected default mode flags to be off")
+	}
+
+	if !cs.SetLiveMode("acceptEdits") {
+		t.Fatal("SetLiveMode(acceptEdits) = false, want true")
+	}
+	if !cs.acceptEditsOnly.Load() || cs.autoApprove.Load() || cs.dontAsk.Load() {
+		t.Fatal("acceptEdits flags not set correctly")
+	}
+
+	if cs.SetLiveMode("auto") {
+		t.Fatal("SetLiveMode(auto) = true, want false")
+	}
+
+	cs.SetLiveMode("dontAsk")
+	if !cs.dontAsk.Load() || cs.autoApprove.Load() || cs.acceptEditsOnly.Load() {
+		t.Fatal("dontAsk flags not set correctly")
+	}
+
+	cs.SetLiveMode("bypassPermissions")
+	if !cs.autoApprove.Load() || cs.acceptEditsOnly.Load() || cs.dontAsk.Load() {
+		t.Fatal("bypassPermissions alias flags not set correctly")
+	}
+}
+
+func TestClaudeSessionSetLiveMode_AutoSessionRequiresRestart(t *testing.T) {
+	cs := &claudeSession{}
+	cs.setPermissionMode("auto")
+	if cs.SetLiveMode("default") {
+		t.Fatal("SetLiveMode(default) from auto session = true, want false")
+	}
+}
+
+func TestAgent_PermissionModes(t *testing.T) {
+	a := &Agent{}
+	modes := a.PermissionModes()
+	if len(modes) == 0 {
+		t.Fatal("PermissionModes() returned no modes")
+	}
+
+	foundAuto := false
+	foundBypass := false
+	for _, mode := range modes {
+		if mode.Key == "auto" {
+			foundAuto = true
+		}
+		if mode.Key == "bypassPermissions" {
+			foundBypass = true
+		}
+	}
+	if !foundAuto {
+		t.Fatal("PermissionModes() missing auto mode")
+	}
+	if !foundBypass {
+		t.Fatal("PermissionModes() missing bypassPermissions mode")
+	}
+}
+
+func TestIsClaudeEditTool(t *testing.T) {
+	for _, tool := range []string{"Edit", "Write", "NotebookEdit", "MultiEdit"} {
+		if !isClaudeEditTool(tool) {
+			t.Fatalf("isClaudeEditTool(%q) = false, want true", tool)
+		}
+	}
+	if isClaudeEditTool("Bash") {
+		t.Fatal("isClaudeEditTool(Bash) = true, want false")
+	}
+}
+
+func TestSummarizeInput_AskUserQuestion(t *testing.T) {
+	input := map[string]any{
+		"questions": []any{
+			map[string]any{
+				"question": "Which framework?",
+				"options": []any{
+					map[string]any{"label": "React"},
+					map[string]any{"label": "Vue"},
+				},
+			},
+		},
+	}
+	result := summarizeInput("AskUserQuestion", input)
+	if result == "" {
+		t.Error("expected non-empty summary for AskUserQuestion")
+	}
+}
+
+func TestAgent_Name(t *testing.T) {
+	a := &Agent{}
+	if got := a.Name(); got != "claudecode" {
+		t.Errorf("Name() = %q, want %q", got, "claudecode")
+	}
+}
+
+func TestAgent_CLIBinaryName(t *testing.T) {
+	a := &Agent{cliBin: "claude"}
+	if got := a.CLIBinaryName(); got != "claude" {
+		t.Errorf("CLIBinaryName() = %q, want %q", got, "claude")
+	}
+
+	a2 := &Agent{cliBin: "my-cli"}
+	if got := a2.CLIBinaryName(); got != "my-cli" {
+		t.Errorf("CLIBinaryName() = %q, want %q", got, "my-cli")
+	}
+}
+
+func TestAgent_CLIDisplayName(t *testing.T) {
+	a := &Agent{}
+	if got := a.CLIDisplayName(); got != "Claude" {
+		t.Errorf("CLIDisplayName() = %q, want %q", got, "Claude")
+	}
+}
+
+func TestAgent_SetWorkDir(t *testing.T) {
+	a := &Agent{}
+	a.SetWorkDir("/tmp/test")
+	if got := a.GetWorkDir(); got != "/tmp/test" {
+		t.Errorf("GetWorkDir() = %q, want %q", got, "/tmp/test")
+	}
+}
+
+func TestAgent_SetModel(t *testing.T) {
+	a := &Agent{}
+	a.SetModel("claude-sonnet-4-20250514")
+	if got := a.GetModel(); got != "claude-sonnet-4-20250514" {
+		t.Errorf("GetModel() = %q, want %q", got, "claude-sonnet-4-20250514")
+	}
+}
+
+func TestAgent_SetSessionEnv(t *testing.T) {
+	a := &Agent{}
+	a.SetSessionEnv([]string{"KEY=value"})
+	if len(a.sessionEnv) != 1 || a.sessionEnv[0] != "KEY=value" {
+		t.Errorf("sessionEnv = %v, want [KEY=value]", a.sessionEnv)
+	}
+}
+
+func TestAgent_SetPlatformPrompt(t *testing.T) {
+	a := &Agent{}
+	a.SetPlatformPrompt("You are a helpful assistant on Feishu.")
+	if a.platformPrompt != "You are a helpful assistant on Feishu." {
+		t.Errorf("platformPrompt = %q, want %q", a.platformPrompt, "You are a helpful assistant on Feishu.")
+	}
+}
+
+func TestAgent_SetMode(t *testing.T) {
+	a := &Agent{}
+
+	a.SetMode("auto")
+	if got := a.GetMode(); got != "auto" {
+		t.Fatalf("GetMode() after SetMode(auto) = %q, want auto", got)
+	}
+
+	a.SetMode("yolo")
+	if got := a.GetMode(); got != "bypassPermissions" {
+		t.Fatalf("GetMode() after SetMode(yolo) = %q, want bypassPermissions", got)
+	}
+}
+
+func TestStripXMLTags(t *testing.T) {
+	tests := []struct {
+		input    string
+		expected string
+	}{
+		{"<tag>content</tag>", "content"},
+		{"no tags", "no tags"},
+		{"<a>hello</a><b>world</b>", "helloworld"},
+		{"<nested><inner>text</inner></nested>", "text"},
+		{"", ""},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.input, func(t *testing.T) {
+			got := stripXMLTags(tt.input)
+			if got != tt.expected {
+				t.Errorf("stripXMLTags(%q) = %q, want %q", tt.input, got, tt.expected)
+			}
+		})
+	}
+}
+
+// verify Agent implements core.Agent
+var _ core.Agent = (*Agent)(nil)
+
+func TestEncodeClaudeProjectKey(t *testing.T) {
+	tests := []struct {
+		name     string
+		input    string
+		expected string
+	}{
+		{
+			name:     "simple ASCII path",
+			input:    "/Users/username/Documents/project",
+			expected: "-Users-username-Documents-project",
+		},
+		{
+			name:     "path with Chinese characters",
+			input:    "/Users/username/Documents/项目文件夹",
+			expected: "-Users-username-Documents------", // 6 hyphens: 1 for "/" + 5 for Chinese chars
+		},
+		{
+			name:     "path with Japanese characters",
+			input:    "/Users/username/Documents/プロジェクト",
+			expected: "-Users-username-Documents-------", // 6 hyphens: 1 for "/" + 5 for Japanese chars
+		},
+		{
+			name:     "path with emoji",
+			input:    "/Users/username/Documents/🎉project",
+			expected: "-Users-username-Documents--project", // 2 hyphens: 1 for "/" + 1 for emoji
+		},
+		{
+			name:     "Windows path with colon",
+			input:    "C:\\Users\\username\\Documents",
+			expected: "C--Users-username-Documents",
+		},
+		{
+			name:     "path with underscore",
+			input:    "/Users/username/my_project",
+			expected: "-Users-username-my-project",
+		},
+		{
+			name:     "path with spaces",
+			input:    "/Users/username/Mobile Documents/my project",
+			expected: "-Users-username-Mobile-Documents-my-project",
+		},
+		{
+			name:     "path with tildes",
+			input:    "/Users/username/com~apple~CloudDocs/project",
+			expected: "-Users-username-com-apple-CloudDocs-project",
+		},
+		{
+			name:     "iCloud path with spaces and tildes",
+			input:    "/Users/username/Library/Mobile Documents/com~apple~CloudDocs/my project",
+			expected: "-Users-username-Library-Mobile-Documents-com-apple-CloudDocs-my-project",
+		},
+		{
+			name:     "mixed ASCII and non-ASCII",
+			input:    "/Users/username/中文folder/english文件夹",
+			expected: "-Users-username---folder-english---", // "/中文" = 3 hyphens, "/文件夹" = 4 hyphens
+		},
+		{
+			name:     "empty path",
+			input:    "",
+			expected: "",
+		},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			got := encodeClaudeProjectKey(tt.input)
+			if got != tt.expected {
+				t.Errorf("encodeClaudeProjectKey(%q) = %q, want %q", tt.input, got, tt.expected)
+			}
+		})
+	}
+}
+
+func TestFindProjectDir_NonASCIIPath(t *testing.T) {
+	// This test verifies that findProjectDir can handle non-ASCII paths
+	// by creating a mock projects directory structure
+	homeDir := t.TempDir()
+	projectsBase := filepath.Join(homeDir, ".claude", "projects")
+
+	// Test case: Chinese characters in path
+	chineseWorkDir := "/Users/test/Documents/项目文件夹"
+	expectedKey := encodeClaudeProjectKey(chineseWorkDir)
+
+	// Create the mock project directory
+	mockProjectDir := filepath.Join(projectsBase, expectedKey)
+	if err := os.MkdirAll(mockProjectDir, 0755); err != nil {
+		t.Fatalf("failed to create mock project dir: %v", err)
+	}
+
+	// Verify findProjectDir finds the directory
+	found := findProjectDir(homeDir, chineseWorkDir)
+	if found != mockProjectDir {
+		t.Errorf("findProjectDir(%q, %q) = %q, want %q", homeDir, chineseWorkDir, found, mockProjectDir)
+	}
+}
+
+func TestFindProjectDir_ASCIIPath(t *testing.T) {
+	// Verify ASCII paths still work correctly
+	homeDir := t.TempDir()
+	projectsBase := filepath.Join(homeDir, ".claude", "projects")
+
+	asciiWorkDir := "/Users/test/Documents/project"
+	expectedKey := encodeClaudeProjectKey(asciiWorkDir)
+
+	mockProjectDir := filepath.Join(projectsBase, expectedKey)
+	if err := os.MkdirAll(mockProjectDir, 0755); err != nil {
+		t.Fatalf("failed to create mock project dir: %v", err)
+	}
+
+	found := findProjectDir(homeDir, asciiWorkDir)
+	if found != mockProjectDir {
+		t.Errorf("findProjectDir(%q, %q) = %q, want %q", homeDir, asciiWorkDir, found, mockProjectDir)
+	}
+}
+
+func TestFindProjectDir_NotFound(t *testing.T) {
+	homeDir := t.TempDir()
+	// Don't create any project directories
+
+	workDir := "/Users/test/Documents/nonexistent"
+	found := findProjectDir(homeDir, workDir)
+	if found != "" {
+		t.Errorf("findProjectDir for nonexistent project = %q, want empty string", found)
+	}
+}
+
+func TestFindProjectDir_ICloudPath(t *testing.T) {
+	// Regression for issue #500: paths containing spaces and "~" (common in macOS
+	// iCloud Drive paths like "/Users/x/Library/Mobile Documents/com~apple~CloudDocs/...")
+	// must match the on-disk project key that Claude Code CLI generates, which
+	// collapses both spaces and "~" to "-".
+	homeDir := t.TempDir()
+	projectsBase := filepath.Join(homeDir, ".claude", "projects")
+
+	iCloudWorkDir := "/Users/test/Library/Mobile Documents/com~apple~CloudDocs/my project"
+	// The on-disk key Claude Code CLI actually writes (spaces and "~" → "-").
+	expectedKey := "-Users-test-Library-Mobile-Documents-com-apple-CloudDocs-my-project"
+
+	mockProjectDir := filepath.Join(projectsBase, expectedKey)
+	if err := os.MkdirAll(mockProjectDir, 0755); err != nil {
+		t.Fatalf("failed to create mock project dir: %v", err)
+	}
+
+	found := findProjectDir(homeDir, iCloudWorkDir)
+	if found != mockProjectDir {
+		t.Errorf("findProjectDir(%q, %q) = %q, want %q", homeDir, iCloudWorkDir, found, mockProjectDir)
+	}
+}
+
+func TestSnapshotCLIPath(t *testing.T) {
+	cases := []struct {
+		name      string
+		cliBin    string
+		extraArgs []string
+		want      string
+	}{
+		{"default-claude-skipped", "claude", nil, ""},
+		{"empty-binary-skipped", "", nil, ""},
+		{"custom-binary-only", "/usr/local/bin/claude", nil, "/usr/local/bin/claude"},
+		{"wrapper-with-args", "my-cli", []string{"code", "-t", "foo"}, "my-cli code -t foo"},
+		{"claude-with-add-dir", "claude", []string{"--add-dir", "/parent"}, "claude --add-dir /parent"},
+	}
+	for _, tc := range cases {
+		t.Run(tc.name, func(t *testing.T) {
+			got := snapshotCLIPath(tc.cliBin, tc.extraArgs)
+			if got != tc.want {
+				t.Errorf("snapshotCLIPath(%q, %v) = %q, want %q", tc.cliBin, tc.extraArgs, got, tc.want)
+			}
+		})
+	}
+}
+
+func TestWorkspaceAgentOptions_FullSnapshot(t *testing.T) {
+	// Construct an Agent directly so we don't depend on `claude` being on
+	// PATH. WorkspaceAgentOptions only reads fields that the production
+	// New() also writes; this just verifies the snapshot shape.
+	a := &Agent{
+		cliBin:           "my-cli",
+		cliExtraArgs:     []string{"--add-dir", "/parent"},
+		cliArgsFlag:      "-a",
+		model:            "claude-opus-4-7",
+		reasoningEffort:  "high",
+		mode:             "acceptEdits",
+		allowedTools:     []string{"Edit", "Read"},
+		disallowedTools:  []string{"Bash"},
+		maxContextTokens: 200000,
+		routerURL:        "http://127.0.0.1:3456",
+		routerAPIKey:     "secret",
+	}
+	got := a.WorkspaceAgentOptions()
+
+	want := map[string]any{
+		"mode":               "acceptEdits",
+		"cli_path":           "my-cli --add-dir /parent",
+		"cli_args_flag":      "-a",
+		"model":              "claude-opus-4-7",
+		"reasoning_effort":   "high",
+		"allowed_tools":      []any{"Edit", "Read"},
+		"disallowed_tools":   []any{"Bash"},
+		"max_context_tokens": 200000,
+		"router_url":         "http://127.0.0.1:3456",
+		"router_api_key":     "secret",
+	}
+	if len(got) != len(want) {
+		t.Errorf("snapshot len = %d, want %d (got=%v)", len(got), len(want), got)
+	}
+	for k, wv := range want {
+		gv, ok := got[k]
+		if !ok {
+			t.Errorf("snapshot missing key %q", k)
+			continue
+		}
+		if !reflect.DeepEqual(gv, wv) {
+			t.Errorf("snapshot[%q] = %v (%T), want %v (%T)", k, gv, gv, wv, wv)
+		}
+	}
+}
+
+func TestWorkspaceAgentOptions_OmitsZeroValues(t *testing.T) {
+	// Default agent (only mode is always emitted, plus default cliBin
+	// "claude" should be skipped by snapshotCLIPath).
+	a := &Agent{cliBin: "claude", mode: "default"}
+	got := a.WorkspaceAgentOptions()
+
+	if len(got) != 1 {
+		t.Errorf("snapshot len = %d, want 1 (got=%v)", len(got), got)
+	}
+	if got["mode"] != "default" {
+		t.Errorf("snapshot[mode] = %v, want %q", got["mode"], "default")
+	}
+	for _, k := range []string{
+		"cli_path", "cli_args_flag", "model", "reasoning_effort",
+		"allowed_tools", "disallowed_tools", "max_context_tokens",
+		"router_url", "router_api_key",
+	} {
+		if _, ok := got[k]; ok {
+			t.Errorf("snapshot unexpectedly includes %q = %v", k, got[k])
+		}
+	}
+}
+
+func TestWorkspaceAgentOptions_RoundTripsThroughNew(t *testing.T) {
+	// End-to-end: snapshot → New() should reproduce every field. Use
+	// run_as_user to skip the supervisor-side LookPath check, since the
+	// fake "my-cli" binary doesn't exist on the test host's PATH.
+	//
+	// run_as_user only short-circuits LookPath on platforms where
+	// SpawnOptions.IsolationMode() can be true — i.e. Unix. On Windows
+	// it always returns false (see core/runas_windows.go), so the fake
+	// CLI would fail LookPath and New() would error out before the
+	// round-trip assertions run.
+	if runtime.GOOS == "windows" {
+		t.Skip("run_as_user-based LookPath bypass is Unix-only")
+	}
+	parent := &Agent{
+		cliBin:           "my-cli",
+		cliExtraArgs:     []string{"code", "--add-dir", "/parent"},
+		cliArgsFlag:      "-a",
+		model:            "claude-opus-4-7",
+		reasoningEffort:  "high",
+		mode:             "acceptEdits",
+		allowedTools:     []string{"Edit", "Read"},
+		disallowedTools:  []string{"Bash"},
+		maxContextTokens: 200000,
+		routerURL:        "http://127.0.0.1:3456",
+		routerAPIKey:     "secret",
+	}
+	opts := parent.WorkspaceAgentOptions()
+	opts["work_dir"] = "/tmp/claudecode-test"
+	opts["run_as_user"] = "skip-lookpath"
+
+	a, err := New(opts)
+	if err != nil {
+		t.Fatalf("New(snapshot) returned error: %v", err)
+	}
+	child := a.(*Agent)
+
+	if child.cliBin != "my-cli" {
+		t.Errorf("cliBin = %q, want %q", child.cliBin, "my-cli")
+	}
+	if !reflect.DeepEqual(child.cliExtraArgs, []string{"code", "--add-dir", "/parent"}) {
+		t.Errorf("cliExtraArgs = %v, want [code --add-dir /parent]", child.cliExtraArgs)
+	}
+	if child.cliArgsFlag != "-a" {
+		t.Errorf("cliArgsFlag = %q, want -a", child.cliArgsFlag)
+	}
+	if child.model != "claude-opus-4-7" {
+		t.Errorf("model = %q, want claude-opus-4-7", child.model)
+	}
+	if child.reasoningEffort != "high" {
+		t.Errorf("reasoningEffort = %q, want high", child.reasoningEffort)
+	}
+	if child.mode != "acceptEdits" {
+		t.Errorf("mode = %q, want acceptEdits", child.mode)
+	}
+	if !reflect.DeepEqual(child.allowedTools, []string{"Edit", "Read"}) {
+		t.Errorf("allowedTools = %v, want [Edit Read]", child.allowedTools)
+	}
+	if !reflect.DeepEqual(child.disallowedTools, []string{"Bash"}) {
+		t.Errorf("disallowedTools = %v, want [Bash]", child.disallowedTools)
+	}
+	if child.maxContextTokens != 200000 {
+		t.Errorf("maxContextTokens = %d, want 200000", child.maxContextTokens)
+	}
+	if child.routerURL != "http://127.0.0.1:3456" {
+		t.Errorf("routerURL = %q, want http://127.0.0.1:3456", child.routerURL)
+	}
+	if child.routerAPIKey != "secret" {
+		t.Errorf("routerAPIKey = %q, want secret", child.routerAPIKey)
+	}
+}
+
+func TestScanSessionMeta_ArrayContent(t *testing.T) {
+	// Regression test for: scanSessionMeta skips entries where content is a JSON array
+	// (e.g., assistant messages with thinking blocks, or user messages with tool results).
+	tmpDir := t.TempDir()
+	path := filepath.Join(tmpDir, "test.jsonl")
+
+	lines := []string{
+		`{"type": "queue-operation", "operation": "start"}`,
+		`{"type": "user", "message": {"content": "Hello world"}}`,
+		`{"type": "assistant", "message": {"content": [{"type": "thinking", "text": ""}, {"type": "text", "text": "Hi there"}]}}`,
+		`{"type": "user", "message": {"content": [{"tool_use_id": "call_abc", "type": "tool_result", "content": "result data"}]}}`,
+		`{"type": "assistant", "message": {"content": "Plain text reply"}}`,
+		`{"type": "last-prompt", "lastPrompt": "test"}`,
+	}
+
+	data := ""
+	for _, line := range lines {
+		data += line + "\n"
+	}
+	if err := os.WriteFile(path, []byte(data), 0644); err != nil {
+		t.Fatalf("write test jsonl: %v", err)
+	}
+
+	summary, count := scanSessionMeta(path)
+
+	// Expected: 2 user + 2 assistant = 4 messages
+	if count != 4 {
+		t.Errorf("scanSessionMeta count = %d, want 4 (2 user + 2 assistant, array content should not be skipped)", count)
+	}
+
+	// Summary should come from the last user message with string content (line 2)
+	if summary != "Hello world" {
+		t.Errorf("scanSessionMeta summary = %q, want %q", summary, "Hello world")
+	}
+}
+
+func TestScanSessionMeta_AllArrayContent(t *testing.T) {
+	// When all user messages have array content, summary should remain empty
+	// and count should still be correct.
+	tmpDir := t.TempDir()
+	path := filepath.Join(tmpDir, "test.jsonl")
+
+	lines := []string{
+		`{"type": "user", "message": {"content": [{"type": "tool_result", "content": "data"}]}}`,
+		`{"type": "assistant", "message": {"content": [{"type": "text", "text": "reply"}]}}`,
+	}
+
+	data := ""
+	for _, line := range lines {
+		data += line + "\n"
+	}
+	if err := os.WriteFile(path, []byte(data), 0644); err != nil {
+		t.Fatalf("write test jsonl: %v", err)
+	}
+
+	summary, count := scanSessionMeta(path)
+
+	if count != 2 {
+		t.Errorf("scanSessionMeta count = %d, want 2", count)
+	}
+	if summary != "" {
+		t.Errorf("scanSessionMeta summary = %q, want empty string when no string user content exists", summary)
+	}
+}
+
+func TestExtractStringContent(t *testing.T) {
+	tests := []struct {
+		name string
+		raw  string
+		want string
+	}{
+		{"string", `"hello"`, "hello"},
+		{"empty", `""`, ""},
+		{"array", `[{"type": "text"}]`, ""},
+		{"object", `{"key": "val"}`, ""},
+		{"null", `null`, ""},
+		{"number", `42`, ""},
+	}
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			got := extractStringContent([]byte(tt.raw))
+			if got != tt.want {
+				t.Errorf("extractStringContent(%q) = %q, want %q", tt.raw, got, tt.want)
+			}
+		})
+	}
+}

agent/claudecode/claudecode_workdir_race_test.go

@@ -0,0 +1,53 @@
+package claudecode
+
+import (
+	"path/filepath"
+	"sync"
+	"testing"
+)
+
+// TestClaudecodeAgent_WorkDirRaceFreeReaders pins the bug where
+// ListSessions, DeleteSession, GetSessionHistory, CommandDirs,
+// SkillDirs, and ProjectMemoryFile read a.workDir without holding
+// a.mu, while SetWorkDir writes a.workDir under the lock. Run with
+// -race to detect the data race; with the production fix the
+// detector stays quiet.
+//
+// claudecode is the primary agent and exposes the most readers of
+// the workDir field across the project, so the cumulative impact of
+// this race is the largest of any agent.
+func TestClaudecodeAgent_WorkDirRaceFreeReaders(t *testing.T) {
+	dir := t.TempDir()
+	a := &Agent{workDir: dir}
+
+	var wg sync.WaitGroup
+	for i := 0; i < 30; i++ {
+		wg.Add(1)
+		go func(i int) {
+			defer wg.Done()
+			if i%2 == 0 {
+				a.SetWorkDir(filepath.Join(dir, "a"))
+			} else {
+				a.SetWorkDir(filepath.Join(dir, "b"))
+			}
+		}(i)
+	}
+	for i := 0; i < 30; i++ {
+		wg.Add(1)
+		go func() {
+			defer wg.Done()
+			_ = a.CommandDirs()
+		}()
+		wg.Add(1)
+		go func() {
+			defer wg.Done()
+			_ = a.SkillDirs()
+		}()
+		wg.Add(1)
+		go func() {
+			defer wg.Done()
+			_ = a.ProjectMemoryFile()
+		}()
+	}
+	wg.Wait()
+}

agent/claudecode/proc_unix.go

@@ -0,0 +1,48 @@
+//go:build unix
+
+package claudecode
+
+import (
+	"errors"
+	"os"
+	"os/exec"
+	"syscall"
+)
+
+// prepareCmdForKill puts the spawned child into its own process group so that
+// the entire descendant tree can be terminated with a single signal aimed at
+// the negative PID. Without this, cc-connect can only signal the direct
+// child (e.g. the `claude` CLI), leaving any grandchildren (MCP server
+// processes such as the Telegram bridge) as orphans that may spin at 100%
+// CPU when their parent disappears.
+//
+// Mirrors the pattern used by agent/codex/proc_unix.go.
+func prepareCmdForKill(cmd *exec.Cmd) {
+	if cmd == nil {
+		return
+	}
+	if cmd.SysProcAttr == nil {
+		cmd.SysProcAttr = &syscall.SysProcAttr{}
+	}
+	cmd.SysProcAttr.Setpgid = true
+}
+
+// signalProcessGroup sends sig to the entire process group rooted at cmd.
+// Returns nil if the group is already gone.
+func signalProcessGroup(cmd *exec.Cmd, sig syscall.Signal) error {
+	if cmd == nil || cmd.Process == nil {
+		return nil
+	}
+	if err := syscall.Kill(-cmd.Process.Pid, sig); err != nil &&
+		!errors.Is(err, os.ErrProcessDone) &&
+		!errors.Is(err, syscall.ESRCH) {
+		return err
+	}
+	return nil
+}
+
+// forceKillCmd SIGKILLs the entire process group rooted at cmd. Use this
+// as the last-resort escalation when graceful shutdown has timed out.
+func forceKillCmd(cmd *exec.Cmd) error {
+	return signalProcessGroup(cmd, syscall.SIGKILL)
+}

agent/claudecode/proc_unix_test.go

@@ -0,0 +1,113 @@
+//go:build unix
+
+package claudecode
+
+import (
+	"os/exec"
+	"syscall"
+	"testing"
+	"time"
+)
+
+func TestPrepareCmdForKill_SetsSetpgid(t *testing.T) {
+	cmd := exec.Command("/bin/true")
+	prepareCmdForKill(cmd)
+	if cmd.SysProcAttr == nil {
+		t.Fatal("SysProcAttr is nil after prepareCmdForKill")
+	}
+	if !cmd.SysProcAttr.Setpgid {
+		t.Fatal("Setpgid not set after prepareCmdForKill")
+	}
+}
+
+func TestPrepareCmdForKill_PreservesExistingSysProcAttr(t *testing.T) {
+	cmd := exec.Command("/bin/true")
+	cmd.SysProcAttr = &syscall.SysProcAttr{Foreground: false}
+	prepareCmdForKill(cmd)
+	if !cmd.SysProcAttr.Setpgid {
+		t.Fatal("Setpgid not set when SysProcAttr was pre-populated")
+	}
+}
+
+func TestPrepareCmdForKill_NilCmd(t *testing.T) {
+	// Must not panic on a nil *exec.Cmd.
+	prepareCmdForKill(nil)
+}
+
+func TestForceKillCmd_NoProcess(t *testing.T) {
+	cmd := exec.Command("/bin/true")
+	// cmd has not been Start()ed, so cmd.Process is nil.
+	if err := forceKillCmd(cmd); err != nil {
+		t.Errorf("expected no error on un-started cmd, got %v", err)
+	}
+}
+
+func TestForceKillCmd_NilCmd(t *testing.T) {
+	if err := forceKillCmd(nil); err != nil {
+		t.Errorf("expected no error on nil cmd, got %v", err)
+	}
+}
+
+// TestForceKillCmd_KillsGrandchild is the regression test for the original
+// bug: spawning a shell that backgrounds a long-running grandchild, then
+// proving that forceKillCmd reaps the grandchild along with the direct
+// child via process-group kill. Without prepareCmdForKill setting up the
+// process group, the grandchild would survive and spin.
+func TestForceKillCmd_KillsGrandchild(t *testing.T) {
+	// /bin/sh -c 'sleep 60 & echo $! ; wait'
+	// The grandchild PID is printed on stdout so we can verify it is reaped.
+	cmd := exec.Command("/bin/sh", "-c", "sleep 60 & echo $! ; wait")
+	prepareCmdForKill(cmd)
+
+	stdout, err := cmd.StdoutPipe()
+	if err != nil {
+		t.Fatalf("stdout pipe: %v", err)
+	}
+	if err := cmd.Start(); err != nil {
+		t.Fatalf("start: %v", err)
+	}
+
+	// Read the grandchild PID.
+	buf := make([]byte, 32)
+	deadline := time.Now().Add(2 * time.Second)
+	var grandchildPidStr string
+	for time.Now().Before(deadline) {
+		n, _ := stdout.Read(buf)
+		if n > 0 {
+			grandchildPidStr = string(buf[:n])
+			break
+		}
+		time.Sleep(10 * time.Millisecond)
+	}
+	if grandchildPidStr == "" {
+		_ = forceKillCmd(cmd)
+		_ = cmd.Wait()
+		t.Fatal("did not receive grandchild PID")
+	}
+
+	if err := forceKillCmd(cmd); err != nil {
+		t.Fatalf("forceKillCmd: %v", err)
+	}
+	_ = cmd.Wait()
+
+	// Verify the grandchild is gone by checking that signaling it with 0
+	// (no-op, just checks existence) returns ESRCH within a short window.
+	// We can't easily parse the PID without strconv import bloat in tests,
+	// so we rely on `pgrep` semantics: re-kill the group should be a no-op.
+	if err := forceKillCmd(cmd); err != nil {
+		t.Errorf("second forceKillCmd should be no-op, got %v", err)
+	}
+}
+
+func TestSignalProcessGroup_NoProcess(t *testing.T) {
+	cmd := exec.Command("/bin/true")
+	if err := signalProcessGroup(cmd, syscall.SIGTERM); err != nil {
+		t.Errorf("expected no error on un-started cmd, got %v", err)
+	}
+}
+
+func TestSignalProcessGroup_NilCmd(t *testing.T) {
+	if err := signalProcessGroup(nil, syscall.SIGTERM); err != nil {
+		t.Errorf("expected no error on nil cmd, got %v", err)
+	}
+}

agent/claudecode/proc_windows.go

@@ -0,0 +1,85 @@
+//go:build windows
+
+package claudecode
+
+import (
+	"bytes"
+	"errors"
+	"fmt"
+	"os"
+	"os/exec"
+	"strconv"
+	"strings"
+	"syscall"
+)
+
+// prepareCmdForKill puts the spawned child into a new process group on
+// Windows so that taskkill /T can later terminate the entire descendant
+// tree. Without this, cc-connect can only signal the direct child,
+// leaving grandchildren (such as MCP server bridges) as orphans.
+//
+// Mirrors the pattern used by agent/codex/proc_windows.go.
+func prepareCmdForKill(cmd *exec.Cmd) {
+	if cmd == nil {
+		return
+	}
+	if cmd.SysProcAttr == nil {
+		cmd.SysProcAttr = &syscall.SysProcAttr{}
+	}
+	cmd.SysProcAttr.CreationFlags |= syscall.CREATE_NEW_PROCESS_GROUP
+}
+
+// signalProcessGroup is a graceful best-effort equivalent of forceKillCmd
+// on Windows: taskkill without /F asks the target to close cleanly. Falls
+// back to cmd.Process.Signal if taskkill is unavailable.
+func signalProcessGroup(cmd *exec.Cmd, sig syscall.Signal) error {
+	if cmd == nil || cmd.Process == nil {
+		return nil
+	}
+	killCmd := exec.Command("taskkill", "/T", "/PID", strconv.Itoa(cmd.Process.Pid))
+	output, err := killCmd.CombinedOutput()
+	if err == nil {
+		return nil
+	}
+	if isTaskkillNotRunning(output) {
+		return nil
+	}
+	if killErr := cmd.Process.Signal(sig); killErr == nil || errors.Is(killErr, os.ErrProcessDone) {
+		return nil
+	}
+	return fmt.Errorf("taskkill failed: %w: %s", err, processKillOutput(output))
+}
+
+// forceKillCmd taskkill /T /F's the entire descendant tree rooted at cmd.
+func forceKillCmd(cmd *exec.Cmd) error {
+	if cmd == nil || cmd.Process == nil {
+		return nil
+	}
+	killCmd := exec.Command("taskkill", "/T", "/F", "/PID", strconv.Itoa(cmd.Process.Pid))
+	output, err := killCmd.CombinedOutput()
+	if err == nil {
+		return nil
+	}
+	if isTaskkillNotRunning(output) {
+		return nil
+	}
+	if killErr := cmd.Process.Kill(); killErr == nil || errors.Is(killErr, os.ErrProcessDone) {
+		return nil
+	} else {
+		return fmt.Errorf("taskkill failed: %w: %s; process kill fallback failed: %w", err, processKillOutput(output), killErr)
+	}
+}
+
+func isTaskkillNotRunning(output []byte) bool {
+	lower := bytes.ToLower(output)
+	return bytes.Contains(lower, []byte("there is no running instance")) ||
+		bytes.Contains(lower, []byte("not found"))
+}
+
+func processKillOutput(output []byte) string {
+	trimmed := strings.TrimSpace(string(output))
+	if trimmed == "" {
+		return "(empty output)"
+	}
+	return trimmed
+}

agent/claudecode/project_env_test.go

@@ -0,0 +1,135 @@
+package claudecode
+
+import (
+	"testing"
+
+	"github.com/chenhg5/cc-connect/core"
+)
+
+func TestNew_ParsesProjectEnvFromOpts(t *testing.T) {
+	opts := map[string]any{
+		"work_dir":    "/tmp/test",
+		"run_as_user": "skip-lookpath",
+		"env": map[string]string{
+			"ANTHROPIC_BASE_URL":            "https://api.kimi.com/coding",
+			"ANTHROPIC_AUTH_TOKEN":          "sk-kimi-test",
+			"ANTHROPIC_MODEL":               "K2.6",
+			"ANTHROPIC_REASONING_MODEL":     "K2.6",
+			"ANTHROPIC_DEFAULT_HAIKU_MODEL": "K2.6",
+		},
+	}
+
+	a, err := New(opts)
+	if err != nil {
+		t.Fatalf("New() error: %v", err)
+	}
+
+	agent := a.(*Agent)
+	agent.mu.Lock()
+	defer agent.mu.Unlock()
+
+	if len(agent.configEnv) != 5 {
+		t.Fatalf("expected 5 env vars, got %d: %v", len(agent.configEnv), agent.configEnv)
+	}
+
+	envMap := envSliceToMap(agent.configEnv)
+	if got := envMap["ANTHROPIC_BASE_URL"]; got != "https://api.kimi.com/coding" {
+		t.Errorf("ANTHROPIC_BASE_URL = %q, want %q", got, "https://api.kimi.com/coding")
+	}
+	if got := envMap["ANTHROPIC_AUTH_TOKEN"]; got != "sk-kimi-test" {
+		t.Errorf("ANTHROPIC_AUTH_TOKEN = %q, want %q", got, "sk-kimi-test")
+	}
+	if got := envMap["ANTHROPIC_MODEL"]; got != "K2.6" {
+		t.Errorf("ANTHROPIC_MODEL = %q, want %q", got, "K2.6")
+	}
+}
+
+func TestNew_ParsesProjectEnvFromMapStringAny(t *testing.T) {
+	opts := map[string]any{
+		"work_dir":    "/tmp/test",
+		"run_as_user": "test-user",
+		"env": map[string]any{
+			"ANTHROPIC_BASE_URL":   "https://api.mimo.com/v1",
+			"ANTHROPIC_AUTH_TOKEN": "sk-mimo-test",
+			"ANTHROPIC_MODEL":      "mimo-large",
+		},
+	}
+
+	a, err := New(opts)
+	if err != nil {
+		t.Fatalf("New() error: %v", err)
+	}
+
+	agent := a.(*Agent)
+	agent.mu.Lock()
+	defer agent.mu.Unlock()
+
+	envMap := envSliceToMap(agent.configEnv)
+	if got := envMap["ANTHROPIC_BASE_URL"]; got != "https://api.mimo.com/v1" {
+		t.Errorf("ANTHROPIC_BASE_URL = %q, want %q", got, "https://api.mimo.com/v1")
+	}
+	if got := envMap["ANTHROPIC_MODEL"]; got != "mimo-large" {
+		t.Errorf("ANTHROPIC_MODEL = %q, want %q", got, "mimo-large")
+	}
+}
+
+func TestNew_NoEnvOpts(t *testing.T) {
+	opts := map[string]any{
+		"work_dir":    "/tmp/test",
+		"run_as_user": "test-user",
+	}
+
+	a, err := New(opts)
+	if err != nil {
+		t.Fatalf("New() error: %v", err)
+	}
+
+	agent := a.(*Agent)
+	agent.mu.Lock()
+	defer agent.mu.Unlock()
+
+	if len(agent.configEnv) != 0 {
+		t.Fatalf("expected 0 env vars when no env in opts, got %d: %v", len(agent.configEnv), agent.configEnv)
+	}
+}
+
+func TestNew_ProjectEnvOverridesProviderEnv(t *testing.T) {
+	opts := map[string]any{
+		"work_dir":    "/tmp/test",
+		"run_as_user": "test-user",
+		"env": map[string]string{
+			"ANTHROPIC_BASE_URL":   "https://api.deepseek.com/v1",
+			"ANTHROPIC_AUTH_TOKEN": "sk-deepseek-test",
+			"ANTHROPIC_MODEL":      "deepseek-chat",
+		},
+	}
+
+	a, err := New(opts)
+	if err != nil {
+		t.Fatalf("New() error: %v", err)
+	}
+
+	agent := a.(*Agent)
+	// Set providers to simulate a provider being configured
+	agent.providers = []core.ProviderConfig{
+		{
+			Name:    "deepseek",
+			BaseURL: "https://api.deepseek.com/v1",
+			APIKey:  "sk-deepseek-test",
+			Model:   "deepseek-chat",
+		},
+	}
+	agent.activeIdx = 0
+
+	// runtimeEnvLocked merges configEnv + providerEnv + sessionEnv
+	// configEnv (from opts["env"]) should be present
+	env := agent.runtimeEnvLocked()
+	envMap := envSliceToMap(env)
+
+	if got := envMap["ANTHROPIC_BASE_URL"]; got != "https://api.deepseek.com/v1" {
+		t.Errorf("ANTHROPIC_BASE_URL = %q, want %q", got, "https://api.deepseek.com/v1")
+	}
+	if got := envMap["ANTHROPIC_MODEL"]; got != "deepseek-chat" {
+		t.Errorf("ANTHROPIC_MODEL = %q, want %q", got, "deepseek-chat")
+	}
+}

agent/claudecode/provider_env_test.go

@@ -0,0 +1,338 @@
+package claudecode
+
+import (
+	"strings"
+	"testing"
+
+	"github.com/chenhg5/cc-connect/core"
+)
+
+func TestAgentUsageProbeEnv_AddsHostManagedFlagForCustomProvider(t *testing.T) {
+	a := &Agent{
+		providers: []core.ProviderConfig{
+			{
+				Name:    "custom",
+				BaseURL: "https://example.com/v1",
+				APIKey:  "secret",
+			},
+		},
+		activeIdx: 0,
+	}
+
+	env := envSliceToMap(a.usageProbeEnv())
+
+	if got := env["ANTHROPIC_BASE_URL"]; got != "https://example.com/v1" {
+		t.Fatalf("ANTHROPIC_BASE_URL = %q, want custom base URL", got)
+	}
+	if got := env["ANTHROPIC_AUTH_TOKEN"]; got != "secret" {
+		t.Fatalf("ANTHROPIC_AUTH_TOKEN = %q, want injected bearer token", got)
+	}
+	if got := env["CLAUDE_CODE_PROVIDER_MANAGED_BY_HOST"]; got != "1" {
+		t.Fatalf("CLAUDE_CODE_PROVIDER_MANAGED_BY_HOST = %q, want 1", got)
+	}
+}
+
+func TestAgentUsageProbeEnv_DoesNotAddHostManagedFlagForModelOnlyProvider(t *testing.T) {
+	a := &Agent{
+		providers: []core.ProviderConfig{
+			{
+				Name:  "model-only",
+				Model: "claude-sonnet-4",
+			},
+		},
+		activeIdx: 0,
+	}
+
+	env := envSliceToMap(a.usageProbeEnv())
+	if _, ok := env["CLAUDE_CODE_PROVIDER_MANAGED_BY_HOST"]; ok {
+		t.Fatalf("CLAUDE_CODE_PROVIDER_MANAGED_BY_HOST unexpectedly set: %v", env)
+	}
+}
+
+func TestAgentUsageProbeEnv_AddsHostManagedFlagForProviderEnvRoutingOverrides(t *testing.T) {
+	a := &Agent{
+		providers: []core.ProviderConfig{
+			{
+				Name: "bedrock",
+				Env: map[string]string{
+					"CLAUDE_CODE_USE_BEDROCK": "1",
+				},
+			},
+		},
+		activeIdx: 0,
+	}
+
+	env := envSliceToMap(a.usageProbeEnv())
+	if got := env["CLAUDE_CODE_USE_BEDROCK"]; got != "1" {
+		t.Fatalf("CLAUDE_CODE_USE_BEDROCK = %q, want 1", got)
+	}
+	if got := env["CLAUDE_CODE_PROVIDER_MANAGED_BY_HOST"]; got != "1" {
+		t.Fatalf("CLAUDE_CODE_PROVIDER_MANAGED_BY_HOST = %q, want 1", got)
+	}
+}
+
+func TestAgentUsageProbeEnv_AddsHostManagedFlagForSessionEnvRoutingOverrides(t *testing.T) {
+	a := &Agent{
+		sessionEnv: []string{
+			"ANTHROPIC_BASE_URL=https://session.example/v1",
+		},
+	}
+
+	env := envSliceToMap(a.usageProbeEnv())
+	if got := env["ANTHROPIC_BASE_URL"]; got != "https://session.example/v1" {
+		t.Fatalf("ANTHROPIC_BASE_URL = %q, want session override", got)
+	}
+	if got := env["CLAUDE_CODE_PROVIDER_MANAGED_BY_HOST"]; got != "1" {
+		t.Fatalf("CLAUDE_CODE_PROVIDER_MANAGED_BY_HOST = %q, want 1", got)
+	}
+}
+
+func TestAgentUsageProbeEnv_AddsHostManagedFlagForRouterOverrides(t *testing.T) {
+	a := &Agent{
+		routerURL:    "http://127.0.0.1:3456",
+		routerAPIKey: "router-secret",
+	}
+
+	env := envSliceToMap(a.usageProbeEnv())
+	if got := env["ANTHROPIC_BASE_URL"]; got != "http://127.0.0.1:3456" {
+		t.Fatalf("ANTHROPIC_BASE_URL = %q, want router URL", got)
+	}
+	if got := env["ANTHROPIC_API_KEY"]; got != "router-secret" {
+		t.Fatalf("ANTHROPIC_API_KEY = %q, want router API key", got)
+	}
+	if got := env["CLAUDE_CODE_PROVIDER_MANAGED_BY_HOST"]; got != "1" {
+		t.Fatalf("CLAUDE_CODE_PROVIDER_MANAGED_BY_HOST = %q, want 1", got)
+	}
+}
+
+func TestProviderEnv_SetsAnthropicModel(t *testing.T) {
+	a := &Agent{
+		providers: []core.ProviderConfig{
+			{
+				Name:    "provider-a",
+				BaseURL: "https://a.example.com/v1",
+				APIKey:  "key-a",
+				Model:   "model-a",
+			},
+			{
+				Name:    "provider-b",
+				BaseURL: "https://b.example.com/v1",
+				APIKey:  "key-b",
+				Model:   "model-b",
+			},
+		},
+		activeIdx: 0,
+	}
+
+	env := envSliceToMap(a.providerEnvLocked())
+	if got := env["ANTHROPIC_MODEL"]; got != "model-a" {
+		t.Fatalf("ANTHROPIC_MODEL = %q, want %q", got, "model-a")
+	}
+	if got := env["ANTHROPIC_BASE_URL"]; got != "https://a.example.com/v1" {
+		t.Fatalf("ANTHROPIC_BASE_URL = %q, want provider-a URL", got)
+	}
+
+	a.SetActiveProvider("provider-b")
+	env = envSliceToMap(a.providerEnvLocked())
+	if got := env["ANTHROPIC_MODEL"]; got != "model-b" {
+		t.Fatalf("after switch: ANTHROPIC_MODEL = %q, want %q", got, "model-b")
+	}
+	if got := env["ANTHROPIC_BASE_URL"]; got != "https://b.example.com/v1" {
+		t.Fatalf("after switch: ANTHROPIC_BASE_URL = %q, want provider-b URL", got)
+	}
+}
+
+func TestProviderEnv_NoModelWhenEmpty(t *testing.T) {
+	a := &Agent{
+		providers: []core.ProviderConfig{
+			{
+				Name:    "no-model",
+				BaseURL: "https://example.com/v1",
+				APIKey:  "key",
+			},
+		},
+		activeIdx: 0,
+	}
+	env := envSliceToMap(a.providerEnvLocked())
+	if _, ok := env["ANTHROPIC_MODEL"]; ok {
+		t.Fatalf("ANTHROPIC_MODEL should not be set when provider has no model")
+	}
+}
+
+func TestProviderEnv_ClearReturnsNil(t *testing.T) {
+	a := &Agent{
+		providers: []core.ProviderConfig{
+			{Name: "p", BaseURL: "https://x.com", APIKey: "k", Model: "m"},
+		},
+		activeIdx: 0,
+	}
+	a.SetActiveProvider("")
+	env := a.providerEnvLocked()
+	if env != nil {
+		t.Fatalf("expected nil env after clearing provider, got %v", env)
+	}
+}
+
+func TestStartSession_UsesActiveProviderModel(t *testing.T) {
+	a := &Agent{
+		model: "default-model",
+		providers: []core.ProviderConfig{
+			{Name: "p1", Model: "provider-model-1"},
+			{Name: "p2", Model: "provider-model-2"},
+		},
+		activeIdx: 0,
+	}
+
+	a.mu.Lock()
+	activeIdx := a.activeIdx
+	model := a.model
+	if activeIdx >= 0 && activeIdx < len(a.providers) {
+		if m := a.providers[activeIdx].Model; m != "" {
+			model = m
+		}
+	}
+	a.mu.Unlock()
+
+	if model != "provider-model-1" {
+		t.Fatalf("model = %q, want %q", model, "provider-model-1")
+	}
+
+	a.SetActiveProvider("p2")
+	a.mu.Lock()
+	activeIdx = a.activeIdx
+	model = a.model
+	if activeIdx >= 0 && activeIdx < len(a.providers) {
+		if m := a.providers[activeIdx].Model; m != "" {
+			model = m
+		}
+	}
+	a.mu.Unlock()
+
+	if model != "provider-model-2" {
+		t.Fatalf("after switch: model = %q, want %q", model, "provider-model-2")
+	}
+}
+
+func envSliceToMap(env []string) map[string]string {
+	out := make(map[string]string, len(env))
+	for _, entry := range env {
+		key, value, ok := strings.Cut(entry, "=")
+		if !ok {
+			continue
+		}
+		out[key] = value
+	}
+	return out
+}
+
+func TestProviderEnv_BedrockThinkingRewrite(t *testing.T) {
+	a := &Agent{
+		providers: []core.ProviderConfig{
+			{
+				Name: "bedrock",
+				Env: map[string]string{
+					"CLAUDE_CODE_USE_BEDROCK": "1",
+					"AWS_PROFILE":             "bedrock",
+				},
+				Thinking: "disabled",
+			},
+		},
+		activeIdx: 0,
+	}
+
+	env := envSliceToMap(a.providerEnvLocked())
+
+	// Should set ANTHROPIC_BEDROCK_BASE_URL to local proxy URL.
+	baseURL := env["ANTHROPIC_BEDROCK_BASE_URL"]
+	if baseURL == "" {
+		t.Fatalf("ANTHROPIC_BEDROCK_BASE_URL should be set for Bedrock with thinking rewrite")
+	}
+	if !strings.HasPrefix(baseURL, "http://127.0.0.1:") {
+		t.Fatalf("ANTHROPIC_BEDROCK_BASE_URL = %q, want local proxy URL", baseURL)
+	}
+
+	// Should preserve Bedrock env vars.
+	if got := env["CLAUDE_CODE_USE_BEDROCK"]; got != "1" {
+		t.Fatalf("CLAUDE_CODE_USE_BEDROCK = %q, want 1", got)
+	}
+
+	// Should set NO_PROXY for local proxy.
+	if got := env["NO_PROXY"]; got != "127.0.0.1" {
+		t.Fatalf("NO_PROXY = %q, want 127.0.0.1", got)
+	}
+}
+
+func TestProviderEnv_VertexThinkingRewrite(t *testing.T) {
+	a := &Agent{
+		providers: []core.ProviderConfig{
+			{
+				Name: "vertex",
+				Env: map[string]string{
+					"CLAUDE_CODE_USE_VERTEX": "1",
+					"CLOUD_ML_REGION":        "us-east1",
+				},
+				Thinking: "disabled",
+			},
+		},
+		activeIdx: 0,
+	}
+
+	env := envSliceToMap(a.providerEnvLocked())
+
+	// Should set ANTHROPIC_VERTEX_BASE_URL to local proxy URL.
+	baseURL := env["ANTHROPIC_VERTEX_BASE_URL"]
+	if baseURL == "" {
+		t.Fatalf("ANTHROPIC_VERTEX_BASE_URL should be set for Vertex with thinking rewrite")
+	}
+	if !strings.HasPrefix(baseURL, "http://127.0.0.1:") {
+		t.Fatalf("ANTHROPIC_VERTEX_BASE_URL = %q, want local proxy URL", baseURL)
+	}
+}
+
+func TestProviderEnv_BedrockNoThinking(t *testing.T) {
+	// Without thinking override, Bedrock provider should not use proxy.
+	a := &Agent{
+		providers: []core.ProviderConfig{
+			{
+				Name: "bedrock",
+				Env: map[string]string{
+					"CLAUDE_CODE_USE_BEDROCK": "1",
+				},
+			},
+		},
+		activeIdx: 0,
+	}
+
+	env := envSliceToMap(a.providerEnvLocked())
+
+	// Should NOT set ANTHROPIC_BEDROCK_BASE_URL when thinking is not set.
+	if _, ok := env["ANTHROPIC_BEDROCK_BASE_URL"]; ok {
+		t.Fatalf("ANTHROPIC_BEDROCK_BASE_URL should not be set without thinking override")
+	}
+
+	// Should preserve Bedrock env var.
+	if got := env["CLAUDE_CODE_USE_BEDROCK"]; got != "1" {
+		t.Fatalf("CLAUDE_CODE_USE_BEDROCK = %q, want 1", got)
+	}
+}
+
+func TestDetectEnvOnlyProviderType(t *testing.T) {
+	tests := []struct {
+		env      map[string]string
+		expected string
+	}{
+		{map[string]string{"CLAUDE_CODE_USE_BEDROCK": "1"}, "bedrock"},
+		{map[string]string{"CLAUDE_CODE_USE_VERTEX": "1"}, "vertex"},
+		{map[string]string{"CLAUDE_CODE_USE_FOUNDRY": "1"}, "foundry"},
+		{map[string]string{"CLAUDE_CODE_USE_BEDROCK": "0"}, ""},
+		{map[string]string{"OTHER_VAR": "1"}, ""},
+		{nil, ""},
+	}
+
+	for _, tt := range tests {
+		got := detectEnvOnlyProviderType(tt.env)
+		if got != tt.expected {
+			t.Errorf("detectEnvOnlyProviderType(%v) = %q, want %q", tt.env, got, tt.expected)
+		}
+	}
+}

agent/claudecode/provider_integration_test.go

@@ -0,0 +1,288 @@
+package claudecode
+
+import (
+	"context"
+	"os"
+	"os/exec"
+	"strings"
+	"testing"
+	"time"
+
+	"github.com/chenhg5/cc-connect/config"
+	"github.com/chenhg5/cc-connect/core"
+)
+
+// These integration tests use real provider credentials from ~/.cc-connect/config.toml.
+// They verify that provider switching correctly sets up env vars and that agent
+// sessions can be started with the right configuration.
+//
+// Run with: CC_RUN_PROVIDER_INTEGRATION=1 go test ./agent/claudecode -run TestIntegration -v
+// Skip explicitly with: CC_SKIP_INTEGRATION=1
+
+func skipIfNoConfig(t *testing.T) *config.Config {
+	t.Helper()
+	if os.Getenv("CC_SKIP_INTEGRATION") == "1" {
+		t.Skip("CC_SKIP_INTEGRATION=1")
+	}
+	if os.Getenv("CC_RUN_PROVIDER_INTEGRATION") != "1" {
+		t.Skip("set CC_RUN_PROVIDER_INTEGRATION=1 to run provider integration tests")
+	}
+	cfgPath := os.ExpandEnv("$HOME/.cc-connect/config.toml")
+	if _, err := os.Stat(cfgPath); os.IsNotExist(err) {
+		t.Skipf("config not found at %s", cfgPath)
+	}
+	cfg, err := config.Load(cfgPath)
+	if err != nil {
+		t.Fatalf("failed to load config: %v", err)
+	}
+	cfg.ResolveProviderRefs()
+	return cfg
+}
+
+func configToCoreProv(p config.ProviderConfig) core.ProviderConfig {
+	cp := core.ProviderConfig{
+		Name:    p.Name,
+		APIKey:  p.APIKey,
+		BaseURL: p.BaseURL,
+		Model:   p.Model,
+		Env:     p.Env,
+	}
+	if p.Thinking != "" {
+		cp.Thinking = p.Thinking
+	}
+	for _, m := range p.Models {
+		cp.Models = append(cp.Models, core.ModelOption{Name: m.Model})
+	}
+	return cp
+}
+
+func findProjectProviders(cfg *config.Config, agentType string) (projName string, providers []core.ProviderConfig, workDir string) {
+	for i := range cfg.Projects {
+		proj := &cfg.Projects[i]
+		if proj.Agent.Type != agentType || len(proj.Agent.Providers) == 0 {
+			continue
+		}
+		for _, p := range proj.Agent.Providers {
+			providers = append(providers, configToCoreProv(p))
+		}
+		projName = proj.Name
+		if wd, ok := proj.Agent.Options["work_dir"].(string); ok {
+			workDir = wd
+		}
+		return
+	}
+	return
+}
+
+func TestIntegration_ProviderSwitch_EnvVars(t *testing.T) {
+	cfg := skipIfNoConfig(t)
+
+	name, providers, _ := findProjectProviders(cfg, "claudecode")
+	if name == "" {
+		t.Skip("no claudecode project with providers found")
+	}
+	if len(providers) < 2 {
+		t.Skipf("project %q has only %d provider(s), need at least 2", name, len(providers))
+	}
+
+	a := &Agent{
+		providers: providers,
+		activeIdx: -1,
+	}
+
+	p0, p1 := providers[0], providers[1]
+	t.Logf("provider[0]: name=%s model=%s base_url=%s", p0.Name, p0.Model, p0.BaseURL)
+	t.Logf("provider[1]: name=%s model=%s base_url=%s", p1.Name, p1.Model, p1.BaseURL)
+
+	a.SetActiveProvider(p0.Name)
+	env0 := envSliceToMap(a.providerEnvLocked())
+
+	if p0.BaseURL != "" {
+		if got := env0["ANTHROPIC_BASE_URL"]; got != p0.BaseURL {
+			t.Errorf("provider[0] ANTHROPIC_BASE_URL = %q, want %q", got, p0.BaseURL)
+		}
+	}
+	if p0.Model != "" {
+		if got := env0["ANTHROPIC_MODEL"]; got != p0.Model {
+			t.Errorf("provider[0] ANTHROPIC_MODEL = %q, want %q", got, p0.Model)
+		}
+	}
+
+	a.SetActiveProvider(p1.Name)
+	env1 := envSliceToMap(a.providerEnvLocked())
+
+	if p1.BaseURL != "" {
+		if got := env1["ANTHROPIC_BASE_URL"]; got != p1.BaseURL {
+			t.Errorf("provider[1] ANTHROPIC_BASE_URL = %q, want %q", got, p1.BaseURL)
+		}
+	}
+	if p1.Model != "" {
+		if got := env1["ANTHROPIC_MODEL"]; got != p1.Model {
+			t.Errorf("provider[1] ANTHROPIC_MODEL = %q, want %q", got, p1.Model)
+		}
+	}
+
+	if p0.BaseURL != p1.BaseURL {
+		if env0["ANTHROPIC_BASE_URL"] == env1["ANTHROPIC_BASE_URL"] {
+			t.Error("providers have different base_urls but env didn't change after switch")
+		}
+	}
+	if p0.Model != p1.Model && p0.Model != "" && p1.Model != "" {
+		if env0["ANTHROPIC_MODEL"] == env1["ANTHROPIC_MODEL"] {
+			t.Error("providers have different models but ANTHROPIC_MODEL didn't change after switch")
+		}
+	}
+}
+
+func TestIntegration_ProviderSwitch_SessionStartModel(t *testing.T) {
+	cfg := skipIfNoConfig(t)
+
+	name, providers, workDir := findProjectProviders(cfg, "claudecode")
+	if name == "" {
+		t.Skip("no claudecode project with providers found")
+	}
+	if len(providers) < 2 {
+		t.Skipf("project %q has only %d provider(s), need at least 2", name, len(providers))
+	}
+	if workDir == "" {
+		workDir = "/tmp"
+	}
+
+	cliBin, err := exec.LookPath("claude")
+	if err != nil {
+		t.Skipf("claude CLI not found: %v", err)
+	}
+
+	for _, prov := range providers[:2] {
+		t.Run(prov.Name, func(t *testing.T) {
+			a := &Agent{
+				model:     "default-model",
+				providers: providers,
+				activeIdx: -1,
+				workDir:   workDir,
+				cliBin:    cliBin,
+			}
+			a.SetActiveProvider(prov.Name)
+
+			ctx, cancel := context.WithTimeout(context.Background(), 10*time.Second)
+			defer cancel()
+
+			sess, err := a.StartSession(ctx, "")
+			if err != nil {
+				t.Fatalf("StartSession failed: %v", err)
+			}
+			defer sess.Close()
+
+			cs := sess.(*claudeSession)
+			envMap := envSliceToMap(cs.cmd.Env)
+
+			if prov.Model != "" {
+				found := false
+				for _, arg := range cs.cmd.Args {
+					if arg == prov.Model {
+						found = true
+						break
+					}
+				}
+				if !found {
+					t.Errorf("--model %q not found in args: %v", prov.Model, cs.cmd.Args)
+				}
+			}
+
+			if prov.BaseURL != "" {
+				gotURL := envMap["ANTHROPIC_BASE_URL"]
+				if gotURL == "" {
+					t.Error("ANTHROPIC_BASE_URL not set in session env")
+				} else if !strings.Contains(gotURL, "127.0.0.1") && gotURL != prov.BaseURL {
+					t.Errorf("ANTHROPIC_BASE_URL = %q, want %q (or proxy URL)", gotURL, prov.BaseURL)
+				}
+			}
+
+			if prov.Model != "" {
+				if got := envMap["ANTHROPIC_MODEL"]; got != prov.Model {
+					t.Errorf("ANTHROPIC_MODEL = %q, want %q", got, prov.Model)
+				}
+			}
+
+			t.Logf("session started OK: pid=%d, model=%s, env_model=%s, env_base_url=%s",
+				cs.cmd.Process.Pid,
+				prov.Model,
+				envMap["ANTHROPIC_MODEL"],
+				envMap["ANTHROPIC_BASE_URL"])
+		})
+	}
+}
+
+func TestIntegration_CodexProvider_EnvVars(t *testing.T) {
+	cfg := skipIfNoConfig(t)
+
+	name, providers, _ := findProjectProviders(cfg, "codex")
+	if name == "" {
+		t.Skip("no codex project with providers found")
+	}
+
+	for _, prov := range providers {
+		t.Run(prov.Name, func(t *testing.T) {
+			t.Logf("codex provider: name=%s base_url=%s model=%s", prov.Name, prov.BaseURL, prov.Model)
+			if prov.BaseURL == "" {
+				t.Error("codex provider should have a base_url")
+			}
+			if prov.Model == "" {
+				t.Error("codex provider should have a model")
+			}
+		})
+	}
+}
+
+func TestIntegration_AgentTypeChange_FiltersProviders(t *testing.T) {
+	cfg := skipIfNoConfig(t)
+
+	if len(cfg.Providers) == 0 {
+		t.Skip("no global providers in config")
+	}
+
+	globalByName := make(map[string]config.ProviderConfig, len(cfg.Providers))
+	for _, p := range cfg.Providers {
+		globalByName[p.Name] = p
+	}
+
+	for i := range cfg.Projects {
+		proj := &cfg.Projects[i]
+		if proj.Agent.Type != "claudecode" || len(proj.Agent.ProviderRefs) == 0 {
+			continue
+		}
+
+		var compatible, incompatible []string
+		for _, ref := range proj.Agent.ProviderRefs {
+			gp, ok := globalByName[ref]
+			if !ok {
+				continue
+			}
+			if len(gp.AgentTypes) > 0 {
+				hasCodex := false
+				for _, at := range gp.AgentTypes {
+					if at == "codex" {
+						hasCodex = true
+					}
+				}
+				if hasCodex {
+					compatible = append(compatible, ref)
+				} else {
+					incompatible = append(incompatible, ref)
+				}
+			} else {
+				compatible = append(compatible, ref)
+			}
+		}
+
+		if len(incompatible) == 0 {
+			continue
+		}
+
+		t.Logf("project %q: switching claudecode→codex: keep=%v remove=%v",
+			proj.Name, compatible, incompatible)
+		t.Logf("provider filtering validated: %d provider(s) would be removed on agent type change", len(incompatible))
+		return
+	}
+	t.Skip("no project with incompatible providers found for agent type change test")
+}

agent/claudecode/session.go

@@ -0,0 +1,796 @@
+package claudecode
+
+import (
+	"bufio"
+	"bytes"
+	"context"
+	"encoding/base64"
+	"encoding/json"
+	"fmt"
+	"io"
+	"log/slog"
+	"os"
+	"os/exec"
+	"path/filepath"
+	"strconv"
+	"strings"
+	"sync"
+	"sync/atomic"
+	"syscall"
+	"time"
+
+	"github.com/chenhg5/cc-connect/core"
+)
+
+// claudeSession manages a long-running Claude Code process using
+// --input-format stream-json and --permission-prompt-tool stdio.
+//
+// In "auto" mode, permission requests are auto-approved internally
+// (avoiding --dangerously-skip-permissions which fails under root).
+type claudeSession struct {
+	cmd             *exec.Cmd
+	stdin           io.WriteCloser
+	stdinMu         sync.Mutex
+	events          chan core.Event
+	sessionID       atomic.Value // stores string
+	permissionMode  atomic.Value // stores string
+	autoApprove     atomic.Bool
+	acceptEditsOnly atomic.Bool
+	dontAsk         atomic.Bool
+	workDir         string
+	ctx             context.Context
+	cancel          context.CancelFunc
+	done            chan struct{}
+	alive           atomic.Bool
+
+	// gracefulStopTimeout is how long Close() waits for a clean exit
+	// (stdin close → Stop hooks → process exit) before escalating to
+	// SIGTERM and then SIGKILL. Default: 120s to match claude-mem's
+	// Stop hook timeout. The wait ends as soon as the process exits,
+	// so typical shutdowns take seconds, not the full timeout.
+	gracefulStopTimeout time.Duration
+}
+
+func newClaudeSession(ctx context.Context, workDir, cliBin string, cliExtraArgs []string, cliArgsFlag string, model, effort, sessionID, mode, systemPrompt string, allowedTools, disallowedTools []string, extraEnv []string, platformPrompt string, disableVerbose bool, spawnOpts core.SpawnOptions, maxContextTokens int) (*claudeSession, error) {
+	sessionCtx, cancel := context.WithCancel(ctx)
+
+	// innerArgs are Claude Code CLI flags — when a wrapper is used with
+	// cliArgsFlag these get bundled into a single passthrough string.
+	// outerArgs are flags the wrapper itself understands (e.g. --model).
+	innerArgs := []string{
+		"--output-format", "stream-json",
+		"--input-format", "stream-json",
+		"--permission-prompt-tool", "stdio",
+		"--replay-user-messages",
+	}
+	if !disableVerbose {
+		innerArgs = append(innerArgs, "--verbose")
+	}
+
+	if mode != "" && mode != "default" {
+		innerArgs = append(innerArgs, "--permission-mode", mode)
+	}
+	switch sessionID {
+	case "", core.ContinueSession:
+		// Truly fresh session — no resume, no continue.
+	default:
+		// Resuming a known session ID — this is cc-connect's own session
+		// from a previous connection, safe to resume directly.
+		innerArgs = append(innerArgs, "--resume", sessionID)
+	}
+	if len(allowedTools) > 0 {
+		innerArgs = append(innerArgs, "--allowedTools", strings.Join(allowedTools, ","))
+	}
+	if len(disallowedTools) > 0 {
+		innerArgs = append(innerArgs, "--disallowedTools", strings.Join(disallowedTools, ","))
+	}
+
+	// Handle custom system prompt
+	if systemPrompt != "" {
+		innerArgs = append(innerArgs, "--system-prompt", systemPrompt)
+	}
+
+	// Always append cc-connect system prompt for functionality awareness
+	if sysPrompt := core.AgentSystemPrompt(); sysPrompt != "" {
+		if platformPrompt != "" {
+			sysPrompt += "\n## Formatting\n" + platformPrompt + "\n"
+		}
+		innerArgs = append(innerArgs, "--append-system-prompt", sysPrompt)
+	}
+
+	if effort != "" {
+		innerArgs = append(innerArgs, "--effort", effort)
+	}
+	if maxContextTokens > 0 {
+		innerArgs = append(innerArgs, "--max-context-tokens", strconv.Itoa(maxContextTokens))
+	}
+
+	// outerArgs are understood by both the wrapper and Claude CLI directly.
+	var outerArgs []string
+	if model != "" {
+		outerArgs = append(outerArgs, "--model", model)
+	}
+
+	slog.Debug("claudeSession: starting", "innerArgs", core.RedactArgs(innerArgs), "outerArgs", core.RedactArgs(outerArgs), "dir", workDir, "mode", mode, "run_as_user", spawnOpts.RunAsUser)
+
+	// Per-spawn defense in depth: if run_as_user is set, re-run the cheap
+	// preflight (sudo still works + target still can't escalate) right
+	// before we build the command. This catches sudoers being edited
+	// between startup preflight and now.
+	if spawnOpts.IsolationMode() {
+		verifyCtx, verifyCancel := context.WithTimeout(sessionCtx, 10*time.Second)
+		err := core.VerifyRunAsUserCheap(verifyCtx, core.ExecSudoRunner{}, spawnOpts.RunAsUser)
+		verifyCancel()
+		if err != nil {
+			cancel()
+			return nil, fmt.Errorf("claudeSession: run_as_user spawn refused: %w", err)
+		}
+	}
+
+	// Build final argument list.
+	// When cliArgsFlag is set (e.g. "-a"), inner args are bundled into a
+	// single passthrough string via that flag, while outer args (--model etc.)
+	// are appended directly so the wrapper can also interpret them.
+	// Args containing spaces/newlines are quoted so the wrapper's command-line
+	// parser (e.g. splitCommandLine) keeps them as single tokens.
+	// Result: my-cli code -t foo -a "--verbose --append-system-prompt 'long text'" --model x
+	var allArgs []string
+	if cliArgsFlag != "" {
+		allArgs = append(allArgs, cliExtraArgs...)
+		allArgs = append(allArgs, cliArgsFlag, shellJoinArgs(innerArgs))
+		allArgs = append(allArgs, outerArgs...)
+	} else {
+		allArgs = append(allArgs, cliExtraArgs...)
+		allArgs = append(allArgs, innerArgs...)
+		allArgs = append(allArgs, outerArgs...)
+	}
+	cmd := core.BuildSpawnCommand(sessionCtx, spawnOpts, cliBin, allArgs...)
+	cmd.Dir = workDir
+	// Put the child into its own process group so Close() can terminate the
+	// entire descendant tree (claude CLI → MCP server bridges → ...) with a
+	// single signal. Without this, killing only the direct child can leave
+	// MCP grandchildren (e.g. the Telegram bridge bun process) spinning at
+	// 100% CPU after their parent's stdio pipe closes.
+	prepareCmdForKill(cmd)
+	// Filter out CLAUDECODE env var to prevent "nested session" detection,
+	// since cc-connect is a bridge, not a nested Claude Code session.
+	env := filterEnv(os.Environ(), "CLAUDECODE")
+	if len(extraEnv) > 0 {
+		env = core.MergeEnv(env, extraEnv)
+	}
+	// When run_as_user is set, strip the supervisor's environment down to
+	// the allowlist before passing it to sudo. sudo --preserve-env also
+	// enforces this, but filtering here makes the cc-connect spawn argv
+	// the single source of truth.
+	env = core.FilterEnvForSpawn(env, spawnOpts)
+	cmd.Env = env
+
+	var providerEnvSnapshot []string
+	for _, e := range env {
+		for _, prefix := range []string{"ANTHROPIC_", "CLAUDE_", "AWS_", "NO_PROXY", "DISABLE_"} {
+			if strings.HasPrefix(e, prefix) {
+				providerEnvSnapshot = append(providerEnvSnapshot, e)
+				break
+			}
+		}
+	}
+	slog.Debug("claudeSession: spawn details",
+		"bin", cliBin,
+		"allArgs", core.RedactArgs(allArgs),
+		"model", model,
+		"providerEnv", core.RedactEnv(providerEnvSnapshot))
+
+	stdin, err := cmd.StdinPipe()
+	if err != nil {
+		cancel()
+		return nil, fmt.Errorf("claudeSession: stdin pipe: %w", err)
+	}
+
+	stdout, err := cmd.StdoutPipe()
+	if err != nil {
+		cancel()
+		return nil, fmt.Errorf("claudeSession: stdout pipe: %w", err)
+	}
+
+	var stderrBuf bytes.Buffer
+	cmd.Stderr = &stderrBuf
+
+	if err := cmd.Start(); err != nil {
+		cancel()
+		return nil, fmt.Errorf("claudeSession: start: %w", err)
+	}
+
+	cs := &claudeSession{
+		cmd:                 cmd,
+		stdin:               stdin,
+		events:              make(chan core.Event, 64),
+		workDir:             workDir,
+		ctx:                 sessionCtx,
+		cancel:              cancel,
+		done:                make(chan struct{}),
+		gracefulStopTimeout: 120 * time.Second,
+	}
+	cs.setPermissionMode(mode)
+	cs.sessionID.Store(sessionID)
+	cs.alive.Store(true)
+
+	go cs.readLoop(stdout, &stderrBuf)
+
+	return cs, nil
+}
+
+func (cs *claudeSession) readLoop(stdout io.ReadCloser, stderrBuf *bytes.Buffer) {
+	waitErrCh, waitDone := cs.startReadLoopWait(stdout)
+	defer cs.finishReadLoop(waitErrCh, stderrBuf)
+
+	scanner := bufio.NewScanner(stdout)
+	scanner.Buffer(make([]byte, 0, 64*1024), 10*1024*1024)
+	for scanner.Scan() {
+		cs.handleReadLoopLine(scanner.Text())
+	}
+
+	cs.handleReadLoopScanErr(scanner.Err(), waitDone)
+}
+
+func (cs *claudeSession) startReadLoopWait(stdout io.ReadCloser) (<-chan error, <-chan struct{}) {
+	waitErrCh := make(chan error, 1)
+	waitDone := make(chan struct{})
+
+	go func() {
+		waitErrCh <- cs.cmd.Wait()
+		close(waitDone)
+	}()
+
+	go func() {
+		select {
+		case <-cs.ctx.Done():
+			_ = stdout.Close()
+			return
+		case <-waitDone:
+		}
+
+		// Grace period: give scanner a brief window to drain any data the
+		// agent wrote to the pipe buffer before exiting. If scanner finishes
+		// on its own (pipe fully closed, no descendants holding it),
+		// cs.done fires first and we skip the force-close entirely
+		select {
+		case <-cs.done:
+			return
+		case <-time.After(50 * time.Millisecond):
+		}
+		_ = stdout.Close()
+	}()
+
+	return waitErrCh, waitDone
+}
+
+func (cs *claudeSession) finishReadLoop(waitErrCh <-chan error, stderrBuf *bytes.Buffer) {
+	err := <-waitErrCh
+
+	cs.alive.Store(false)
+	if err != nil {
+		stderrMsg := ""
+		if stderrBuf != nil {
+			stderrMsg = strings.TrimSpace(stderrBuf.String())
+		}
+		if stderrMsg != "" {
+			slog.Error("claudeSession: process failed", "error", err, "stderr", stderrMsg)
+			evt := core.Event{Type: core.EventError, Error: fmt.Errorf("%s", stderrMsg)}
+			select {
+			case cs.events <- evt:
+			case <-cs.ctx.Done():
+				// INVARIANT: readLoop must close cs.events and cs.done exactly once
+				// on every termination path. Callers (engine event loop) rely on
+				// these closures to observe session end.
+			}
+		}
+	}
+	close(cs.events)
+	close(cs.done)
+}
+
+func (cs *claudeSession) handleReadLoopScanErr(err error, waitDone <-chan struct{}) {
+	if err == nil {
+		return
+	}
+
+	select {
+	case <-cs.ctx.Done():
+		return
+	case <-waitDone:
+		return
+	default:
+	}
+
+	slog.Error("claudeSession: scanner error", "error", err)
+	evt := core.Event{Type: core.EventError, Error: fmt.Errorf("read stdout: %w", err)}
+	select {
+	case cs.events <- evt:
+	case <-cs.ctx.Done():
+		return
+	}
+}
+
+func (cs *claudeSession) handleReadLoopLine(line string) {
+	if line == "" {
+		return
+	}
+
+	var raw map[string]any
+	if err := json.Unmarshal([]byte(line), &raw); err != nil {
+		slog.Debug("claudeSession: non-JSON line", "line", line)
+		return
+	}
+
+	eventType, _ := raw["type"].(string)
+	slog.Debug("claudeSession: event", "type", eventType)
+
+	switch eventType {
+	case "system":
+		cs.handleSystem(raw)
+	case "assistant":
+		cs.handleAssistant(raw)
+	case "user":
+		cs.handleUser(raw)
+	case "result":
+		cs.handleResult(raw)
+	case "control_request":
+		cs.handleControlRequest(raw)
+	case "control_cancel_request":
+		requestID, _ := raw["request_id"].(string)
+		slog.Debug("claudeSession: permission cancelled", "request_id", requestID)
+	}
+}
+
+func (cs *claudeSession) handleSystem(raw map[string]any) {
+	if sid, ok := raw["session_id"].(string); ok && sid != "" {
+		cs.sessionID.Store(sid)
+		evt := core.Event{Type: core.EventText, SessionID: sid}
+		select {
+		case cs.events <- evt:
+		case <-cs.ctx.Done():
+			return
+		}
+	}
+}
+
+func (cs *claudeSession) handleAssistant(raw map[string]any) {
+	msg, ok := raw["message"].(map[string]any)
+	if !ok {
+		return
+	}
+	contentArr, ok := msg["content"].([]any)
+	if !ok {
+		return
+	}
+	for _, contentItem := range contentArr {
+		item, ok := contentItem.(map[string]any)
+		if !ok {
+			continue
+		}
+		contentType, _ := item["type"].(string)
+		switch contentType {
+		case "tool_use":
+			toolName, _ := item["name"].(string)
+			if toolName == "AskUserQuestion" {
+				continue
+			}
+			inputSummary := summarizeInput(toolName, item["input"])
+			evt := core.Event{Type: core.EventToolUse, ToolName: toolName, ToolInput: inputSummary}
+			select {
+			case cs.events <- evt:
+			case <-cs.ctx.Done():
+				return
+			}
+		case "thinking":
+			if thinking, ok := item["thinking"].(string); ok && thinking != "" {
+				evt := core.Event{Type: core.EventThinking, Content: thinking}
+				select {
+				case cs.events <- evt:
+				case <-cs.ctx.Done():
+					return
+				}
+			}
+		case "text":
+			if text, ok := item["text"].(string); ok && text != "" {
+				evt := core.Event{Type: core.EventText, Content: text}
+				select {
+				case cs.events <- evt:
+				case <-cs.ctx.Done():
+					return
+				}
+			}
+		}
+	}
+}
+
+func (cs *claudeSession) handleUser(raw map[string]any) {
+	msg, ok := raw["message"].(map[string]any)
+	if !ok {
+		return
+	}
+	contentArr, ok := msg["content"].([]any)
+	if !ok {
+		return
+	}
+	for _, contentItem := range contentArr {
+		item, ok := contentItem.(map[string]any)
+		if !ok {
+			continue
+		}
+		contentType, _ := item["type"].(string)
+		if contentType == "tool_result" {
+			isError, _ := item["is_error"].(bool)
+			if isError {
+				result, _ := item["content"].(string)
+				slog.Debug("claudeSession: tool error", "content", result)
+			}
+		}
+	}
+}
+
+func (cs *claudeSession) handleResult(raw map[string]any) {
+	var content string
+	if result, ok := raw["result"].(string); ok {
+		content = result
+	}
+	if sid, ok := raw["session_id"].(string); ok && sid != "" {
+		cs.sessionID.Store(sid)
+	}
+
+	var inputTokens, outputTokens int
+	if usage, ok := raw["usage"].(map[string]any); ok {
+		if v, ok := usage["input_tokens"].(float64); ok {
+			inputTokens = int(v)
+		}
+		if v, ok := usage["output_tokens"].(float64); ok {
+			outputTokens = int(v)
+		}
+	}
+
+	evt := core.Event{
+		Type:         core.EventResult,
+		Content:      content,
+		SessionID:    cs.CurrentSessionID(),
+		Done:         true,
+		InputTokens:  inputTokens,
+		OutputTokens: outputTokens,
+	}
+	select {
+	case cs.events <- evt:
+	case <-cs.ctx.Done():
+		return
+	}
+}
+
+func (cs *claudeSession) handleControlRequest(raw map[string]any) {
+	requestID, _ := raw["request_id"].(string)
+	request, _ := raw["request"].(map[string]any)
+	if request == nil {
+		return
+	}
+	subtype, _ := request["subtype"].(string)
+	if subtype != "can_use_tool" {
+		slog.Debug("claudeSession: unknown control request subtype", "subtype", subtype)
+		return
+	}
+
+	toolName, _ := request["tool_name"].(string)
+	input, _ := request["input"].(map[string]any)
+
+	if cs.autoApprove.Load() {
+		slog.Debug("claudeSession: auto-approving", "request_id", requestID, "tool", toolName)
+		_ = cs.RespondPermission(requestID, core.PermissionResult{
+			Behavior:     "allow",
+			UpdatedInput: input,
+		})
+		return
+	}
+	if cs.dontAsk.Load() {
+		slog.Debug("claudeSession: auto-denying", "request_id", requestID, "tool", toolName)
+		_ = cs.RespondPermission(requestID, core.PermissionResult{
+			Behavior: "deny",
+			Message:  "Permission mode is set to dontAsk.",
+		})
+		return
+	}
+	if cs.acceptEditsOnly.Load() && isClaudeEditTool(toolName) {
+		slog.Debug("claudeSession: auto-approving edit tool", "request_id", requestID, "tool", toolName)
+		_ = cs.RespondPermission(requestID, core.PermissionResult{
+			Behavior:     "allow",
+			UpdatedInput: input,
+		})
+		return
+	}
+
+	slog.Info("claudeSession: permission request", "request_id", requestID, "tool", toolName)
+	evt := core.Event{
+		Type:         core.EventPermissionRequest,
+		RequestID:    requestID,
+		ToolName:     toolName,
+		ToolInput:    summarizeInput(toolName, input),
+		ToolInputRaw: input,
+	}
+
+	if toolName == "AskUserQuestion" {
+		evt.Questions = parseUserQuestions(input)
+	}
+
+	select {
+	case cs.events <- evt:
+	case <-cs.ctx.Done():
+		return
+	}
+}
+
+// Send writes a user message (with optional images and files) to the Claude process stdin.
+// Images are sent as base64 in the multimodal content array.
+// Files are saved to local temp files and referenced in the text prompt
+// so Claude Code can read them with its built-in tools.
+func (cs *claudeSession) Send(prompt string, images []core.ImageAttachment, files []core.FileAttachment) error {
+	if !cs.alive.Load() {
+		return fmt.Errorf("session process is not running")
+	}
+
+	if len(images) == 0 && len(files) == 0 {
+		return cs.writeJSON(map[string]any{
+			"type":    "user",
+			"message": map[string]any{"role": "user", "content": prompt},
+		})
+	}
+
+	attachDir := filepath.Join(cs.workDir, ".cc-connect", "attachments")
+	if err := os.MkdirAll(attachDir, 0o755); err != nil {
+		slog.Warn("claudeSession: mkdir attachments failed", "error", err, "path", attachDir)
+	}
+
+	var parts []map[string]any
+	var savedPaths []string
+
+	// Save and encode images
+	for i, img := range images {
+		ext := extFromMime(img.MimeType)
+		fname := fmt.Sprintf("img_%d_%d%s", time.Now().UnixMilli(), i, ext)
+		fpath := filepath.Join(attachDir, fname)
+		if err := os.WriteFile(fpath, img.Data, 0o644); err != nil {
+			slog.Error("claudeSession: save image failed", "error", err)
+			continue
+		}
+		savedPaths = append(savedPaths, fpath)
+		slog.Debug("claudeSession: image saved", "path", fpath, "size", len(img.Data))
+
+		mimeType := img.MimeType
+		if mimeType == "" {
+			mimeType = "image/png"
+		}
+		parts = append(parts, map[string]any{
+			"type": "image",
+			"source": map[string]any{
+				"type":       "base64",
+				"media_type": mimeType,
+				"data":       base64.StdEncoding.EncodeToString(img.Data),
+			},
+		})
+	}
+
+	// Save files to disk so Claude Code can read them
+	filePaths := core.SaveFilesToDisk(cs.workDir, files)
+
+	// Build text part: user prompt + file path references
+	textPart := prompt
+	if textPart == "" && len(filePaths) > 0 {
+		textPart = "Please analyze the attached file(s)."
+	} else if textPart == "" {
+		textPart = "Please analyze the attached image(s)."
+	}
+	if len(savedPaths) > 0 {
+		textPart += "\n\n(Images also saved locally: " + strings.Join(savedPaths, ", ") + ")"
+	}
+	if len(filePaths) > 0 {
+		textPart += "\n\n(Files saved locally, please read them: " + strings.Join(filePaths, ", ") + ")"
+	}
+	parts = append(parts, map[string]any{"type": "text", "text": textPart})
+
+	return cs.writeJSON(map[string]any{
+		"type":    "user",
+		"message": map[string]any{"role": "user", "content": parts},
+	})
+}
+
+func extFromMime(mime string) string {
+	switch mime {
+	case "image/jpeg":
+		return ".jpg"
+	case "image/gif":
+		return ".gif"
+	case "image/webp":
+		return ".webp"
+	default:
+		return ".png"
+	}
+}
+
+// RespondPermission writes a control_response to the Claude process stdin.
+func (cs *claudeSession) RespondPermission(requestID string, result core.PermissionResult) error {
+	if !cs.alive.Load() {
+		return fmt.Errorf("session process is not running")
+	}
+
+	var permResponse map[string]any
+	if result.Behavior == "allow" {
+		updatedInput := result.UpdatedInput
+		if updatedInput == nil {
+			updatedInput = make(map[string]any)
+		}
+		permResponse = map[string]any{
+			"behavior":     "allow",
+			"updatedInput": updatedInput,
+		}
+	} else {
+		msg := result.Message
+		if msg == "" {
+			msg = "The user denied this tool use. Stop and wait for the user's instructions."
+		}
+		permResponse = map[string]any{
+			"behavior": "deny",
+			"message":  msg,
+		}
+	}
+
+	controlResponse := map[string]any{
+		"type": "control_response",
+		"response": map[string]any{
+			"subtype":    "success",
+			"request_id": requestID,
+			"response":   permResponse,
+		},
+	}
+
+	slog.Debug("claudeSession: permission response", "request_id", requestID, "behavior", result.Behavior)
+	return cs.writeJSON(controlResponse)
+}
+
+func (cs *claudeSession) writeJSON(v any) error {
+	cs.stdinMu.Lock()
+	defer cs.stdinMu.Unlock()
+
+	data, err := json.Marshal(v)
+	if err != nil {
+		return fmt.Errorf("marshal: %w", err)
+	}
+	if _, err := cs.stdin.Write(append(data, '\n')); err != nil {
+		return fmt.Errorf("write stdin: %w", err)
+	}
+	return nil
+}
+
+func isClaudeEditTool(toolName string) bool {
+	switch toolName {
+	case "Edit", "Write", "NotebookEdit", "MultiEdit":
+		return true
+	default:
+		return false
+	}
+}
+
+func (cs *claudeSession) setPermissionMode(mode string) {
+	cs.permissionMode.Store(mode)
+	cs.autoApprove.Store(mode == "bypassPermissions")
+	cs.acceptEditsOnly.Store(mode == "acceptEdits")
+	cs.dontAsk.Store(mode == "dontAsk")
+}
+
+func (cs *claudeSession) SetLiveMode(mode string) bool {
+	current, _ := cs.permissionMode.Load().(string)
+	if mode == "auto" || mode == "plan" || current == "auto" || current == "plan" {
+		return false
+	}
+	cs.setPermissionMode(mode)
+	return true
+}
+
+func (cs *claudeSession) Events() <-chan core.Event {
+	return cs.events
+}
+
+func (cs *claudeSession) CurrentSessionID() string {
+	v, _ := cs.sessionID.Load().(string)
+	return v
+}
+
+func (cs *claudeSession) Alive() bool {
+	return cs.alive.Load()
+}
+
+func (cs *claudeSession) Close() error {
+	// Phase 1: Close stdin to signal EOF. Claude Code exits cleanly on
+	// stdin close, running Stop hooks (e.g. claude-mem session summary).
+	cs.stdinMu.Lock()
+	if err := cs.stdin.Close(); err != nil {
+		slog.Warn("claudeSession: close stdin", "error", err)
+	}
+	cs.stdinMu.Unlock()
+
+	graceful := cs.gracefulStopTimeout
+	if graceful <= 0 {
+		graceful = 8 * time.Second // legacy fallback
+	}
+
+	select {
+	case <-cs.done:
+		slog.Info("claudeSession: exited cleanly after stdin close")
+		return nil
+	case <-time.After(graceful):
+		slog.Warn("claudeSession: graceful stop timed out, sending SIGTERM",
+			"timeout", graceful)
+	}
+
+	// Phase 2: SIGTERM the whole process group — gives the process and its
+	// descendants (e.g. MCP server bridges) a second chance to run cleanup
+	// handlers that respond to signals but not stdin EOF.
+	if err := signalProcessGroup(cs.cmd, syscall.SIGTERM); err != nil {
+		slog.Warn("claudeSession: signal SIGTERM", "error", err)
+	}
+
+	select {
+	case <-cs.done:
+		slog.Info("claudeSession: exited after SIGTERM")
+		return nil
+	case <-time.After(5 * time.Second):
+		slog.Warn("claudeSession: SIGTERM timed out, sending SIGKILL")
+	}
+
+	// Phase 3: SIGKILL the whole process group — last resort. Using a
+	// group-wide kill ensures grandchildren (Claude Code's MCP servers
+	// such as the Telegram bridge) are reaped along with the direct child;
+	// otherwise they can survive as orphans and spin at 100% CPU.
+	cs.cancel()
+	if err := forceKillCmd(cs.cmd); err != nil {
+		slog.Warn("claudeSession: force kill", "error", err)
+	}
+	<-cs.done
+	return nil
+}
+
+// shellJoinArgs joins args into a single string, quoting any arg that
+// contains whitespace so that a shell-style splitter (like my_cli's
+// splitCommandLine) preserves each arg as one token.
+//
+// Uses single quotes because some splitters (e.g. my_cli) don't support
+// backslash escapes inside double quotes. For values containing single
+// quotes, we close the single-quoted segment, add an escaped single
+// quote, and reopen: 'it'\”s' → it's
+func shellJoinArgs(args []string) string {
+	var b strings.Builder
+	for i, a := range args {
+		if i > 0 {
+			b.WriteByte(' ')
+		}
+		if !strings.ContainsAny(a, " \t\n\r'\"\\") {
+			b.WriteString(a)
+			continue
+		}
+		b.WriteByte('\'')
+		for _, c := range a {
+			if c == '\'' {
+				b.WriteString("'\\''")
+			} else {
+				b.WriteRune(c)
+			}
+		}
+		b.WriteByte('\'')
+	}
+	return b.String()
+}
+
+// filterEnv returns a copy of env with entries matching the given key removed.
+func filterEnv(env []string, key string) []string {
+	prefix := key + "="
+	out := make([]string, 0, len(env))
+	for _, e := range env {
+		if !strings.HasPrefix(e, prefix) {
+			out = append(out, e)
+		}
+	}
+	return out
+}

agent/claudecode/session_test.go

@@ -0,0 +1,285 @@
+package claudecode
+
+import (
+	"bytes"
+	"context"
+	"io"
+	"os"
+	"os/exec"
+	"testing"
+	"time"
+
+	"github.com/chenhg5/cc-connect/core"
+)
+
+func TestHandleResultParsesUsage(t *testing.T) {
+	ctx, cancel := context.WithCancel(context.Background())
+	defer cancel()
+
+	cs := &claudeSession{
+		events: make(chan core.Event, 8),
+		ctx:    ctx,
+	}
+	cs.sessionID.Store("test-session")
+	cs.alive.Store(true)
+
+	raw := map[string]any{
+		"type":       "result",
+		"result":     "done",
+		"session_id": "test-session",
+		"usage": map[string]any{
+			"input_tokens":  float64(150000),
+			"output_tokens": float64(2000),
+		},
+	}
+
+	cs.handleResult(raw)
+
+	evt := <-cs.events
+	if evt.InputTokens != 150000 {
+		t.Errorf("InputTokens = %d, want 150000", evt.InputTokens)
+	}
+	if evt.OutputTokens != 2000 {
+		t.Errorf("OutputTokens = %d, want 2000", evt.OutputTokens)
+	}
+}
+
+func TestHandleResultNoUsage(t *testing.T) {
+	ctx, cancel := context.WithCancel(context.Background())
+	defer cancel()
+
+	cs := &claudeSession{
+		events: make(chan core.Event, 8),
+		ctx:    ctx,
+	}
+	cs.sessionID.Store("test-session")
+	cs.alive.Store(true)
+
+	raw := map[string]any{
+		"type":   "result",
+		"result": "done",
+	}
+
+	cs.handleResult(raw)
+
+	evt := <-cs.events
+	if evt.InputTokens != 0 {
+		t.Errorf("InputTokens = %d, want 0", evt.InputTokens)
+	}
+	if evt.OutputTokens != 0 {
+		t.Errorf("OutputTokens = %d, want 0", evt.OutputTokens)
+	}
+}
+
+func TestReadLoop_ChildHoldsStdoutPipe(t *testing.T) {
+	ctx, cancel := context.WithCancel(context.Background())
+	defer cancel()
+
+	pr, pw := io.Pipe()
+	t.Cleanup(func() {
+		_ = pw.Close()
+	})
+
+	writeDone := make(chan error, 1)
+	go func() {
+		_, err := io.WriteString(pw, `{"type":"system","session_id":"test-pipe"}`+"\n")
+		writeDone <- err
+	}()
+
+	cmd := exec.CommandContext(ctx, os.Args[0], "-test.run=^$")
+	var stderrBuf bytes.Buffer
+	cmd.Stderr = &stderrBuf
+	if err := cmd.Start(); err != nil {
+		t.Fatal(err)
+	}
+
+	cs := &claudeSession{
+		cmd:    cmd,
+		events: make(chan core.Event, 64),
+		ctx:    ctx,
+		cancel: cancel,
+		done:   make(chan struct{}),
+	}
+	cs.alive.Store(true)
+	go cs.readLoop(pr, &stderrBuf)
+
+	timeout := time.After(5 * time.Second)
+	gotEvent := false
+	for {
+		select {
+		case err := <-writeDone:
+			if err != nil {
+				t.Fatal(err)
+			}
+			writeDone = nil
+		case evt, ok := <-cs.events:
+			if !ok {
+				if !gotEvent {
+					t.Fatal("events closed but system event lost")
+				}
+				return
+			}
+			if evt.SessionID == "test-pipe" {
+				gotEvent = true
+			}
+		case <-timeout:
+			t.Fatal("HANG: events not closed within 5s - readLoop stuck in scanner.Scan()")
+		}
+	}
+}
+
+func TestReadLoop_CtxCancelClosesChannels(t *testing.T) {
+	ctx, cancel := context.WithCancel(context.Background())
+	defer cancel()
+
+	pr, pw := io.Pipe()
+	t.Cleanup(func() {
+		_ = pw.Close()
+	})
+
+	// "err-then-sleep" emits stderr before sleeping so that ctx cancel
+	// produces a non-empty stderrBuf in readLoop's defer — exercising the
+	// `case <-cs.ctx.Done()` select branch in finishReadLoop.
+	cmd := helperCommand(ctx, "err-then-sleep")
+	var stderrBuf bytes.Buffer
+	cmd.Stderr = &stderrBuf
+	if err := cmd.Start(); err != nil {
+		t.Fatal(err)
+	}
+
+	cs := &claudeSession{
+		cmd:    cmd,
+		events: make(chan core.Event, 64),
+		ctx:    ctx,
+		cancel: cancel,
+		done:   make(chan struct{}),
+	}
+	cs.alive.Store(true)
+	go cs.readLoop(pr, &stderrBuf)
+
+	time.Sleep(200 * time.Millisecond)
+	cancel()
+
+	timeout := time.After(5 * time.Second)
+	for {
+		select {
+		case _, ok := <-cs.events:
+			if !ok {
+				goto closed
+			}
+		case <-timeout:
+			t.Fatal("HANG: events not closed within 5s after ctx cancel")
+		}
+	}
+closed:
+	select {
+	case <-cs.done:
+	case <-timeout:
+		t.Fatal("HANG: done not closed within 5s after ctx cancel")
+	}
+}
+
+func TestClaudeSessionClose_IdempotentNoPanic(t *testing.T) {
+	ctx, cancel := context.WithCancel(context.Background())
+	defer cancel()
+
+	cmd := helperCommand(ctx, "stdin-eof-exit")
+	stdin, err := cmd.StdinPipe()
+	if err != nil {
+		t.Fatal(err)
+	}
+	cmd.Stdout = io.Discard
+	cmd.Stderr = io.Discard
+	if err := cmd.Start(); err != nil {
+		t.Fatal(err)
+	}
+
+	done := make(chan struct{})
+	go func() {
+		_ = cmd.Wait()
+		close(done)
+	}()
+
+	cs := &claudeSession{
+		cmd:                 cmd,
+		stdin:               stdin,
+		ctx:                 ctx,
+		cancel:              cancel,
+		done:                done,
+		gracefulStopTimeout: 200 * time.Millisecond,
+	}
+	cs.alive.Store(true)
+
+	defer func() {
+		if r := recover(); r != nil {
+			t.Errorf("Close panicked: %v", r)
+		}
+	}()
+
+	if err := cs.Close(); err != nil {
+		t.Fatalf("first Close: %v", err)
+	}
+	if err := cs.Close(); err != nil {
+		t.Fatalf("second Close: %v", err)
+	}
+}
+
+func TestShellJoinArgs(t *testing.T) {
+	tests := []struct {
+		name string
+		args []string
+		want string
+	}{
+		{"empty", nil, ""},
+		{"single_plain", []string{"--verbose"}, "--verbose"},
+		{"multiple_plain", []string{"--verbose", "--model", "opus"}, "--verbose --model opus"},
+		{"arg_with_space", []string{"--prompt", "hello world"}, "--prompt 'hello world'"},
+		{"arg_with_tab", []string{"a\tb"}, "'a\tb'"},
+		{"arg_with_newline", []string{"line1\nline2"}, "'line1\nline2'"},
+		{"arg_with_single_quote", []string{"it's"}, "'it'\\''s'"},
+		{"arg_with_double_quote", []string{`say "hi"`}, `'say "hi"'`},
+		{"arg_with_backslash", []string{`path\to`}, `'path\to'`},
+		{"mixed", []string{"--flag", "has space", "plain", "it's here"}, "--flag 'has space' plain 'it'\\''s here'"},
+		{"empty_string_arg", []string{""}, ""},
+		{"long_prompt", []string{"--append-system-prompt", "You are a helpful assistant.\nBe concise."}, "--append-system-prompt 'You are a helpful assistant.\nBe concise.'"},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			got := shellJoinArgs(tt.args)
+			if got != tt.want {
+				t.Errorf("shellJoinArgs(%v)\n  got  = %q\n  want = %q", tt.args, got, tt.want)
+			}
+		})
+	}
+}
+
+func helperCommand(ctx context.Context, mode string) *exec.Cmd {
+	cmd := exec.CommandContext(ctx, os.Args[0], "-test.run=TestHelperProcess", "--", mode)
+	cmd.Env = append(os.Environ(), "GO_WANT_HELPER_PROCESS=1")
+	return cmd
+}
+
+// TestHelperProcess lets this test binary act as a tiny external command for
+// cases that need a process with controlled lifetime semantics.
+func TestHelperProcess(t *testing.T) {
+	if os.Getenv("GO_WANT_HELPER_PROCESS") != "1" {
+		return
+	}
+
+	mode := os.Args[len(os.Args)-1]
+	switch mode {
+	case "sleep":
+		time.Sleep(30 * time.Second)
+		os.Exit(0)
+	case "err-then-sleep":
+		_, _ = os.Stderr.WriteString("helper: starting up\n")
+		time.Sleep(30 * time.Second)
+		os.Exit(0)
+	case "stdin-eof-exit":
+		_, _ = io.Copy(io.Discard, os.Stdin)
+		os.Exit(0)
+	default:
+		os.Exit(2)
+	}
+}

agent/claudecode/skilldirs_test.go

@@ -0,0 +1,67 @@
+package claudecode
+
+import (
+	"os"
+	"path/filepath"
+	"testing"
+)
+
+func TestSkillDirs_UsesClaudeConfigDirAndProjectParents(t *testing.T) {
+	tmp := t.TempDir()
+	home := filepath.Join(tmp, "home")
+	configHome := filepath.Join(tmp, "profile-home")
+	repo := filepath.Join(tmp, "repo")
+	workDir := filepath.Join(repo, "nested", "pkg")
+
+	t.Setenv("HOME", home)
+	t.Setenv("CLAUDE_CONFIG_DIR", configHome)
+
+	for _, dir := range []string{
+		filepath.Join(repo, "nested", "pkg"),
+		filepath.Join(repo, "nested"),
+		repo,
+		configHome,
+	} {
+		if err := os.MkdirAll(dir, 0o755); err != nil {
+			t.Fatalf("mkdir %s: %v", dir, err)
+		}
+	}
+	if err := os.WriteFile(filepath.Join(repo, ".git"), []byte("gitdir: fake\n"), 0o644); err != nil {
+		t.Fatalf("write .git: %v", err)
+	}
+
+	a := &Agent{workDir: workDir}
+	got := a.SkillDirs()
+	want := []string{
+		filepath.Join(workDir, ".claude", "skills"),
+		filepath.Join(repo, "nested", ".claude", "skills"),
+		filepath.Join(repo, ".claude", "skills"),
+		filepath.Join(configHome, "skills"),
+	}
+	if len(got) != len(want) {
+		t.Fatalf("len(SkillDirs()) = %d, want %d\n got=%v", len(got), len(want), got)
+	}
+	for i := range want {
+		if got[i] != want[i] {
+			t.Fatalf("SkillDirs()[%d] = %q, want %q\nfull=%v", i, got[i], want[i], got)
+		}
+	}
+}
+
+func TestSkillDirs_FallsBackToHomeClaudeDir(t *testing.T) {
+	tmp := t.TempDir()
+	home := filepath.Join(tmp, "home")
+	workDir := filepath.Join(tmp, "workspace")
+	if err := os.MkdirAll(workDir, 0o755); err != nil {
+		t.Fatalf("mkdir workdir: %v", err)
+	}
+	t.Setenv("HOME", home)
+	t.Setenv("CLAUDE_CONFIG_DIR", "")
+
+	a := &Agent{workDir: workDir}
+	got := a.SkillDirs()
+	wantLast := filepath.Join(home, ".claude", "skills")
+	if got[len(got)-1] != wantLast {
+		t.Fatalf("last SkillDirs() = %q, want %q\nfull=%v", got[len(got)-1], wantLast, got)
+	}
+}