Add an LLM fact-check pass over the generated briefing

After summarisation the report is verified against the collected
payload (numbers, directions, unsupported claims) by a second LLM call
with a Verification JSON schema. Major issues trigger one revision and
a re-check; minor-only verdicts are normalized to ok. Failures never
block delivery. The verdict is stored in the result JSON and shown on
the dashboard (badge + 검증 메모). Disable with US2KR_VERIFY_ENABLED.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

dashboard/web/styles.css

@@ -227,6 +227,29 @@ button[aria-pressed="true"] { background: var(--grid); }
 .summary-block ul { margin: 0; padding-left: 18px; }
 .summary-block li { margin: 2px 0; }
 
+.verify-memo {
+  border: 1px dashed var(--baseline);
+  border-radius: 10px;
+  padding: 10px 14px;
+  margin: 0 0 14px;
+  font-size: 12.5px;
+}
+.verify-memo h3 { font-size: 12.5px; margin: 0 0 4px; color: var(--muted); font-weight: 650; }
+.verify-memo ul { margin: 0; padding-left: 4px; list-style: none; }
+.verify-memo li { margin: 3px 0; }
+.verify-severity {
+  display: inline-block;
+  font-size: 11px;
+  font-weight: 600;
+  border-radius: 20px;
+  padding: 0 7px;
+  margin-right: 6px;
+}
+.verify-severity.major { background: var(--badge-err-bg); color: var(--badge-err-ink); }
+.verify-severity.minor { background: var(--badge-warn-bg); color: var(--badge-warn-ink); }
+.verify-claim { color: var(--ink); }
+.verify-problem { color: var(--ink-2); }
+
 /* ------------------------------------------------------------------ report */
 .report-meta { display: flex; flex-wrap: wrap; gap: 8px; align-items: center; font-size: 12.5px; color: var(--ink-2); margin-bottom: 4px; }
 .markdown { max-width: 76ch; }