Merge #183's review fixes into the site branch

docs/superpowers/plans/2026-10-05-ofsted-current-status.md

@@ -17,7 +17,7 @@
 - PR 2 must not be merged before `school_data_monthly_ofsted` has run on staging with PR 1, nor promoted before it has run on production.
 - No compatibility code in the backend for marts built before PR 1 (agreed in brainstorming).
 - Copy follows the site's factual rule: print what Ofsted published; no derived summaries. Dates in prose use long months ("14 March 2023").
-- Commits end with `Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>`; PR bodies end with the Claude Code line. Never push to `main`.
+- Commits end with the Co-Authored-By trailer the executing session's harness specifies (not a fixed model name); PR bodies end with the Claude Code line. Never push to `main`.
 
 ## Review Focus
 
@@ -289,7 +289,7 @@ Expected: unit tests PASS; `fact_ofsted_inspection`'s `not_null` on `inspection_
 
 ```bash
 git add pipeline/transform/models/staging/stg_ofsted_inspections.sql pipeline/transform/models/staging/stg_ofsted_inspections.yml
-git commit -m "feat(pipeline): keep Ofsted's graded, ungraded and report-card dates apart" -m "int_ofsted_latest needs to know which inspection came last. Report-card-only schools are no longer dropped; inspection_date stays for current readers and now falls back to the report-card date." -m "Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>"
+git commit -m "feat(pipeline): keep Ofsted's graded, ungraded and report-card dates apart" -m "int_ofsted_latest needs to know which inspection came last. Report-card-only schools are no longer dropped; inspection_date stays for current readers and now falls back to the report-card date." -m "<the session's Co-Authored-By trailer>"
 ```
 
 ### Task 3: `int_ofsted_latest` computes the current status

docs/superpowers/specs/2026-10-05-ofsted-current-status-design.md

@@ -81,10 +81,12 @@ Computed once per URN in `int_ofsted_latest`.
 | Latest is ungraded, any other outcome ("Standards maintained", "Improved significantly", "Some aspects not as strong") | the graded inspection's overall grade if it is 1–4, else null | G when a grade is kept | `graded` when a grade is kept |
 | No inspection | null | null | null |
 
-Report cards began in November 2025, after the last legacy graded and ungraded
-inspections, so when a school has a report card it is always the latest visit,
-and no legacy grade stays in force beside it. Ties between G, U and RC on the
-same date resolve in the order report card, graded, ungraded.
+A report card replaced overall grades, so no legacy grade stays in force beside
+one. The latest visit is read from the dates, not assumed: report cards began in
+November 2025, after the last legacy graded and ungraded inspections, and in
+Ofsted's 31 Aug 2026 data no school has a legacy visit newer than its report
+card, but the rule does not depend on that. Ties between G, U and RC on the same
+date resolve in the order report card, graded, ungraded.
 
 Invariants: `current_grade` is null or 1–4; `current_grade_date <=
 latest_visit_date`; `current_grade_basis` is null exactly when `current_grade`

pipeline/transform/models/intermediate/int_ofsted_latest.sql

@@ -7,12 +7,11 @@
 with inspections as (
     select
         *,
-        -- Report cards began in Nov 2025, after the last legacy inspections,
-        -- so a school's report card is always its latest visit.
-        coalesce(
-            rc_inspection_date,
-            greatest(graded_inspection_date, ungraded_inspection_date)
-        ) as latest_visit_date
+        -- The newest of the three inspections, read from the dates. (Report
+        -- cards began in Nov 2025, after the last legacy inspections, so today
+        -- a report card is always the latest; nothing below relies on that.)
+        greatest(rc_inspection_date, graded_inspection_date, ungraded_inspection_date)
+            as latest_visit_date
     from {{ ref('stg_ofsted_inspections') }}
 ),
 
@@ -34,8 +33,9 @@ ranked as (
 latest as (
     select
         *,
+        -- Same-day ties resolve report card, then graded, then ungraded.
         case
-            when rc_inspection_date is not null then 'report_card'
+            when rc_inspection_date = latest_visit_date then 'report_card'
             when graded_inspection_date = latest_visit_date then 'graded'
             else 'ungraded'
         end as latest_visit_kind
@@ -46,11 +46,14 @@ latest as (
 graded as (
     select
         *,
-        -- The grade still in force. A graded inspection's own overall grade
+        -- The grade still in force. A report card replaced overall grades, so
+        -- none survives it. Otherwise: a graded inspection's own overall grade
         -- (1-4; "Not judged" and the sentinel 9 are no grade); else an
         -- ungraded visit's "School remains X"; else, after an ungraded visit
         -- that names no grade, the graded inspection's grade.
         case
+            when rc_inspection_date is not null
+                then null
             when latest_visit_kind = 'graded' and overall_effectiveness between 1 and 4
                 then 'graded_latest'
             when latest_visit_kind = 'ungraded' and ungraded_grade is not null

pipeline/transform/models/intermediate/int_ofsted_latest.yml

@@ -97,3 +97,17 @@ unit_tests:
     expect:
       rows:
         - {urn: 3, latest_visit_kind: graded, current_grade: null}
+
+  - name: newer_legacy_visit_after_a_report_card
+    description: >
+      Not in Ofsted's data today (0 of 2,451 report-card schools in the 31 Aug
+      2026 MI), but the latest visit is read from the dates, not assumed. The
+      report card still leaves no legacy grade in force.
+    model: int_ofsted_latest
+    given:
+      - input: ref('stg_ofsted_inspections')
+        rows:
+          - {urn: 4, ungraded_inspection_date: '2026-03-02', ungraded_grade: 2, ungraded_outcome: 'School remains Good', rc_inspection_date: '2025-12-01', rc_inclusion: 3}
+    expect:
+      rows:
+        - {urn: 4, latest_visit_date: '2026-03-02', latest_visit_kind: ungraded, latest_visit_outcome: 'School remains Good', current_grade: null, current_grade_date: null, current_grade_basis: null}

pipeline/transform/tests/assert_ofsted_current_grade_consistent.sql

@@ -7,4 +7,4 @@ from {{ ref('fact_ofsted_latest') }}
 where current_grade_date > latest_visit_date
    or (current_grade is null) <> (current_grade_date is null)
    or (current_grade is null) <> (current_grade_basis is null)
-   or (latest_visit_kind = 'report_card' and current_grade is not null)
+   or (rc_inspection_date is not null and current_grade is not null)