- Rename _get_tree_or_403 → _get_tree_or_404 in maintenance_schedules.py
(function now raises 404, old name was misleading)
- Restore HTTP 403 for intra-account permission failures in update_tree:
same-account users who can see a tree but can't edit it got 404 (wrong);
only cross-account lookups should return 404 to avoid confirming existence
- Apply same 403/404 distinction to update_tree_visibility
- Add test: get_documentation must return 404 for cross-user session access
- Add comment documenting owner-only design for documentation endpoints
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
get_documentation was revealing session existence via 403. Added pre-check
query filtering by session_id AND user_id before calling the engine.
Also add cross-tenant isolation tests for steps, tags, step_categories,
and maintenance_schedules endpoints fixed in Task 6 (TDD was skipped).
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
Tests cover:
- Tree GET/PUT returns 404 for cross-account access
- Session GET returns 404 for cross-user access
- AI session GET returns 404 for cross-user access
- AI session retry-psa-push requires ownership
- Upload URL returns 404 for cross-account access
- Share revoke returns 404 for cross-user access
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
Any authenticated user could read flow analytics (session counts,
completion rates, CSAT) for any tree UUID. Now returns 404 if the
tree doesn't belong to the requesting account.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
