[rubenvdlinde]

What changes

Gate 55 rule 8 says every widget on a detail page is placed exactly once. The check knew two placements: a config.layout grid cell, and a tabs or container widget. A detail page in the v2 shape has three more, and the gate read each as "maps to 0 layout cell(s)":

• config.sideColumn: a string entry is the id of a page widget, which CnDetailPage renders beside the body.
• a sections widget: content.sections[].widgetId names the widget each section shows.
• a tabs entry with widgetIds: a stack of cards in one tab.

Measured on portaliq development (7b7ae1fd): 18 findings on five detail pages. Ten widgets sit in a side column and eight in a sections widget. All 18 render. The manifest is right and the gate was behind the library (nextcloud-vue 2.81.0, CnDetailPage.sideColumnWidgets and CnSectionsWidget).

The gate still fails what it should

• A widget with no placement at all still fails. pipelinq's ClientDetail keeps its five findings (client-summary-* are declared and placed nowhere).
• New: a side column widget that also has a grid cell is reported as a double render.
• New: the same id twice in the side column is reported.
• New: a side column id that names no declared widget is reported. CnDetailPage drops such a card without a word.

Not reported, on purpose: the same widget in the side column and in a tab. pipelinq's ContactDetail and shillinq's CustomerDetail ship a History card beside the body and a History tab. That is a design call, so the gate leaves it alone.

Measured across the fleet (old checker against new, local checkouts)

App	Old	New	New findings
portaliq	18	0	0
pipelinq	31	5	0
shillinq	13	0	0
dossiq	6	0	0
humaniq	1	0	0
13 other apps	0	0	0

No app gets a finding it did not have.

Verified

Check	Exit code
test_check_detail_page_placement.py (new, 14 tests)	0
the same suite against the old checker	1, 12 of 14 fail (the two that pass are controls that hold on both)
test_check_detail_page_cross_app.py, test_check_detail_page_icon_registry.py	0
test_gate_45_to_55_acceptance.sh (74 cases)	0

Also red on portaliq, not from this gate

Gates 22 and 53 reject @row.hostname in a row action payload. The library accepts it since 2.81.0 (schema 2.89.0); the vendored schema here is 2.76.0 and #842 carries 2.85.0. diff_schema_strictness.js between the vendored copy and 2.81.0's schema prints none. I started the schema sync workflow so its pull request follows 2.81.0.