feat(admissions): surface easy-to-miss deadlines as callout boxes

The selective-school registration and faith-school SIF warnings were
added as prose in the criteria steps, where they read as ordinary
sentences and were easy to skim past. Pulled them into structured
callout boxes with an amber "note" treatment (using the page's own
gold accent tokens), a warning glyph, and a bold lead-in — so the two
deadlines parents most often miss actually stand out.

- Added a `callouts` field to Step; render as a callout group between
  the body and the tool link (both primary and secondary timelines).
- Reverted the warning text back out of the step bodies so it isn't
  duplicated.

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/AdmissionsView.module.css

@@ -442,6 +442,58 @@
   line-height: 1;
 }
 
+/* ─── Easy-to-miss callouts ──────────────────────────── */
+
+.calloutGroup {
+  display: flex;
+  flex-direction: column;
+  gap: 0.5rem;
+  margin-top: 0.7rem;
+}
+
+.callout {
+  display: flex;
+  gap: 0.55rem;
+  padding: 0.6rem 0.75rem;
+  background: var(--accent-gold-bg, rgba(201, 162, 39, 0.12));
+  border: 1px solid rgba(201, 162, 39, 0.28);
+  border-left: 3px solid var(--accent-gold, #c9a227);
+  border-radius: 8px;
+}
+
+.calloutIcon {
+  flex-shrink: 0;
+  width: 1.05rem;
+  height: 1.05rem;
+  margin-top: 0.1rem;
+  border-radius: 50%;
+  background: var(--accent-gold, #c9a227);
+  color: #fff;
+  font-size: 0.72rem;
+  font-weight: 800;
+  line-height: 1.05rem;
+  text-align: center;
+}
+
+.calloutText {
+  min-width: 0;
+}
+
+.calloutTitle {
+  font-size: 0.82rem;
+  font-weight: 700;
+  color: var(--accent-gold-text, #7a6800);
+  line-height: 1.3;
+  margin-bottom: 0.15rem;
+}
+
+.calloutBody {
+  font-size: 0.82rem;
+  color: var(--text-secondary, #5c564d);
+  line-height: 1.5;
+  margin: 0;
+}
+
 /* ─── Tips ───────────────────────────────────────────── */
 
 .tips {