ENGAGEMENT.md gains an "As built - 5b" section and BACKEND_DESIGN.md the eight
routes under /admin/engagement.
The scope decision is recorded first because the plan contradicted itself: the
Phase 5 body names only the editor, while Q4's answer and 6.2 both promise
"Triggers, Templates and the send log" in Phase 5. All three shipped - leaving
either out would have left the nav group half-built and G15 open with the rows
already on disk.
Five more decisions, each because the tree said something the plan did not: the
preview is rendered server-side and framed; `status` is now enforced by
renderByKey; a test send is logged under a synthetic trigger rather than making
the column nullable; a template a rule uses refuses deletion with a 409; and
duplicate is the only creation path.
Also records the correction that changed the most code - 4.6.2 says duplicate is
how a protected template is customized, the schema says "Editable, NOT deletable",
and the org lead's ruling is the schema's - and the three things only building it
found, including the Phase 4a template-key pattern that could not match any key
this system uses.
Co-Authored-By: Claude <noreply@anthropic.com>
