docs(6209): forty test files — design cascade and stylesheet, embeddings, family canon, forge, backup round trips, inception, placement, platforms, moments, rule move and verification, search scope, facets

Module and test docstrings state what is pinned without the record number
or step that introduced it. Incident accounts become the failure shape in
the present tense: the pipefail head, the code_shapes import, the export
order, the facet dialects, the cross-kind repeat, the write-once kind.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

tests/test_integration_inception.py

@@ -1,10 +1,10 @@
-"""Real-Postgres integration tests for project inception (milestone 297).
+"""Real-Postgres integration tests for project inception.
 
 What mocks can't prove: a decision's effects land through the real services
 (the design system points, the standard Systems seed once), the record is
 written last, a bad target applies nothing.
 
-Rules are not part of inception since milestone 414: a rule in a rulebook is
+Rules are not part of inception: a rule in a rulebook is
 global and applies to every project, so there is nothing to subscribe to.
 """
 import pytest