fix(home): correct remaining KS2/Ofsted terminology on the landing page

Follow-up to the accuracy pass — the medium-severity wording issues
from the same expert review:

- KS2 "Exceeding" isn't a DfE term. The above-expected level is the
  "higher standard" for the reading and maths tests and "greater depth"
  for teacher-assessed writing. Labelled per subject, and brought the
  illustrative reading value down from an implausible 73% (national
  higher standard is ~29%) to a realistic strong-school figure.
- Attributed inspection outcomes to Ofsted, not only the DfE (Ofsted is
  a separate non-ministerial department).
- Hero: "2026/2027 admissions results" -> "the 2026/27 admissions
  round" (admissions produce offers, not results, and we don't hold
  per-school offer outcomes).

Tightened .miniRowHead so the longer "Greater depth" label stays on one
line and the three subject columns keep their bars aligned (the visual
is desktop-only; hidden on mobile).

Verified with tsc --noEmit and next build.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_0146VHeLAWjDVE2B5uU67jCB

nextjs-app/components/EditorialSection.tsx

@@ -15,9 +15,9 @@ export function EditorialSection({ totalSchools, localAuthorityCount }: Editoria
           <div className={styles.editorialKicker}>About school data</div>
           <h2 className={styles.editorialHeading}>Making England&apos;s school performance data actually readable</h2>
           <p>
-            School performance data in England is rich but fragmented. The Department for Education publishes
-            Key Stage 2 SATs, GCSE attainment, Ofsted outcomes, progress scores, admissions figures and
-            demographics — each in its own table, each with its own jargon.
+            School performance data in England is rich but fragmented. The Department for Education and Ofsted
+            publish Key Stage 2 SATs, GCSE attainment, inspection outcomes, progress scores, admissions figures
+            and demographics — each in its own table, each with its own jargon.
           </p>
           <p>
             SchoolCompare brings it all into one place. Every school page shows performance against the national