feat(gate): GENERATED_COVERED — a tsconfig include rooted in a generated path must be produced by the typecheck script, or declared as deliberately not produced (#10896)

Claude-Session: https://claude.ai/code/session_01DdCnBGcHeufjrq7drTD3wt

Co-authored-by: Claude Opus 5 <noreply@anthropic.com>

Author: os-zhuang