Remove unused raw protocol recorders from agent sessions

internal/codex/session.go

@@ -11,7 +11,6 @@ import (
 	"io"
 	"log/slog"
 	"os"
-	"regexp"
 	"strconv"
 	"sync"
 	"sync/atomic"
@@ -33,7 +32,6 @@ type Options struct {
 	Reminder   string
 	MCPServers []*mcp.Server
 	StdioMCP   []mcp.Stdio
-	Transcript io.Writer
 	OnBadLine  func(line []byte, reason string)
 }
 
@@ -88,9 +86,7 @@ type Session struct {
 	events chan Event
 	done   chan struct{}
 
-	writeLock  chan struct{}
-	recordMu   sync.Mutex
-	transcript io.Writer
+	writeLock chan struct{}
 
 	nextID    atomic.Int64
 	pendingMu sync.Mutex
@@ -181,15 +177,14 @@ func spawn(opts Options) (*Session, error) {
 
 func newSession(opts Options, stdin *os.File, stdout io.Reader) *Session {
 	s := &Session{
-		stdin:      stdin,
-		events:     make(chan Event, 256),
-		writeLock:  make(chan struct{}, 1),
-		done:       make(chan struct{}),
-		transcript: opts.Transcript,
-		pending:    map[int64]chan rpcResult{},
-		servers:    map[string]*mcp.Server{},
-		reminder:   opts.Reminder,
-		onBadLine:  opts.OnBadLine,
+		stdin:     stdin,
+		events:    make(chan Event, 256),
+		writeLock: make(chan struct{}, 1),
+		done:      make(chan struct{}),
+		pending:   map[int64]chan rpcResult{},
+		servers:   map[string]*mcp.Server{},
+		reminder:  opts.Reminder,
+		onBadLine: opts.OnBadLine,
 	}
 	for _, srv := range opts.MCPServers {
 		s.servers[srv.Name] = srv
@@ -552,8 +547,6 @@ func (s *Session) write(m message, deadline time.Time) error {
 		return os.ErrDeadlineExceeded
 	}
 
-	s.record("send", b)
-
 	err = s.stdin.SetWriteDeadline(deadline)
 	if err != nil {
 		return err
@@ -566,26 +559,6 @@ func (s *Session) write(m message, deadline time.Time) error {
 	return err
 }
 
-var emailField = regexp.MustCompile(`"email":"[^"]*"`)
-
-func (s *Session) record(dir string, line []byte) {
-	if s.transcript == nil {
-		return
-	}
-
-	line = emailField.ReplaceAll(line, []byte(`"email":"[redacted]"`))
-
-	b, err := json.Marshal(map[string]any{"dir": dir, "msg": json.RawMessage(line)})
-	if err != nil {
-		slog.Error("record transcript", "err", err)
-		return
-	}
-
-	s.recordMu.Lock()
-	defer s.recordMu.Unlock()
-	s.transcript.Write(append(b, '\n'))
-}
-
 func (s *Session) readLoop(stdout io.Reader) {
 	defer close(s.done)
 	defer close(s.events)
@@ -620,8 +593,6 @@ func (s *Session) handleLine(line []byte) {
 		return
 	}
 
-	s.record("recv", line)
-
 	if m.Method == "" {
 		s.handleResponse(line, m)
 		return