Neutralize CLI-agent system prompts that trigger CodeBuddy CN's content filter, add usage/quota tracking for codebuddy-intl sharing CN's logic, and normalize codebuddy-intl request messages to the shape it expects.
Forcing reasoning_effort:"medium" + reasoning_summary:"auto" on plain
requests tripped CodeBuddy's content filter and returned an error (#2071).
Make reasoning params opt-in: only set reasoning_summary when the client
sent an explicit reasoning_effort; none/off still drops it.
Fixes#2071
Co-authored-by: Cursor <cursoragent@cursor.com>