Update bd-1048 with investigation findings

internal/rpc/server_lifecycle_conn.go

@@ -178,7 +178,11 @@ func (s *Server) handleSignals() {
 }
 
 func (s *Server) handleConnection(conn net.Conn) {
-	defer func() { _ = conn.Close() }()
+	fmt.Fprintf(os.Stderr, "Debug: handleConnection started (bd-1048)\n")
+	defer func() { 
+		fmt.Fprintf(os.Stderr, "Debug: handleConnection closing (bd-1048)\n")
+		_ = conn.Close() 
+	}()
 
 	// Recover from panics to prevent daemon crash (bd-1048)
 	defer func() {
@@ -192,15 +196,19 @@ func (s *Server) handleConnection(conn net.Conn) {
 	writer := bufio.NewWriter(conn)
 
 	for {
+		fmt.Fprintf(os.Stderr, "Debug: waiting for request (bd-1048)\n")
 		// Set read deadline for the next request
 		if err := conn.SetReadDeadline(time.Now().Add(s.requestTimeout)); err != nil {
+			fmt.Fprintf(os.Stderr, "Debug: SetReadDeadline error: %v (bd-1048)\n", err)
 			return
 		}
 
 		line, err := reader.ReadBytes('\n')
 		if err != nil {
+			fmt.Fprintf(os.Stderr, "Debug: ReadBytes error: %v (bd-1048)\n", err)
 			return
 		}
+		fmt.Fprintf(os.Stderr, "Debug: received request line (bd-1048)\n")
 
 		var req Request
 		if err := json.Unmarshal(line, &req); err != nil {
@@ -211,14 +219,18 @@ func (s *Server) handleConnection(conn net.Conn) {
 			s.writeResponse(writer, resp)
 			continue
 		}
+		fmt.Fprintf(os.Stderr, "Debug: parsed request operation: %s (bd-1048)\n", req.Operation)
 
 		// Set write deadline for the response
 		if err := conn.SetWriteDeadline(time.Now().Add(s.requestTimeout)); err != nil {
+			fmt.Fprintf(os.Stderr, "Debug: SetWriteDeadline error: %v (bd-1048)\n", err)
 			return
 		}
 
 		resp := s.handleRequest(&req)
+		fmt.Fprintf(os.Stderr, "Debug: handleRequest returned, writing response (bd-1048)\n")
 		s.writeResponse(writer, resp)
+		fmt.Fprintf(os.Stderr, "Debug: response written (bd-1048)\n")
 	}
 }