Why: 8788 could not render docx because the sandbox hides host site-packages and there is no request path for extra packages. The proposal fixes the design before the implementation lands.
Evidence: SELF — proposal written from the cnv_7936c0a799ff transcript and the existing exec-deps-dir code path.
Impact: Documents only. Index lists the proposal as pending review, not approved.
Refs: docs/proposals/2026-10-15-layered-python-env.md
Co-authored-by: Cursor <cursoragent@cursor.com>
weichenandCursor
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