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/HomeView.tsx

@@ -261,7 +261,7 @@ export function HomeView({ initialSchools, filters, totalSchools, howItWorks, ed
         <div className={styles.heroSection}>
           <span className={styles.heroEyebrow}>
             <span className={styles.heroEyebrowDot} aria-hidden="true" />
-            Updated with 2026/2027 admissions results
+            Updated for the 2026/27 admissions round
           </span>
           <h1 className={styles.heroTitle}>
             Every school in England, <em className={styles.heroEmph}>compared.</em>