[bug] json buffering reports wrong line length

[kallyaleksiev]

Description

In

claude-code-sdk-python/src/claude_code_sdk/_internal/transport/subprocess_cli.py

Line 206 in 4af210e

json_buffer = ""

when the JSON buffer exceeds the maximum size limit (1MB), the error message incorrectly reports "Buffer size 0 exceeds limit" instead of showing the actual buffer size that caused the problem.

Root Cause & Fix

Remove line 206 refreshing the buffer json_buffer = "" before throwing an error