Revert demo to pre-2026-08-06 state (rollback today's push)

Reverts all commits pushed to demo today (a5124ca3, 858c277a, a1a50ab8,
f72abb09, fcf66657) back to f8c532f7 as a single forward commit, without
rewriting history. All reverted content (Share Withdrawal/Closure feature,
TDS reports, KYC exception tracking, client-edit-email-dialog, form121 tab,
search-select) remains intact on dev and was verified identical before
this revert.

src/app/letter-mgmt/certificates/certificates.shared.scss

@@ -505,72 +505,3 @@
   font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
   color: var(--cert-g900);
 }
-
-/* Form 121 register — eligibility warnings and the quarter-wise drill-down */
-
-/* A row the branch needs to look at: an ineligible declaration, or the quarter
-   in which the 194A threshold was crossed. */
-.cert-row--warn > td {
-  background: color-mix(in srgb, var(--cert-amber) 7%, transparent);
-}
-
-.cert-row--detail > td {
-  background: var(--cert-g50);
-  padding: 16px;
-}
-
-.cert-note {
-  display: flex;
-  gap: 10px;
-  align-items: flex-start;
-  margin-bottom: 12px;
-  padding: 10px 12px;
-  border-radius: 8px;
-  background: color-mix(in srgb, var(--cert-blue) 6%, transparent);
-  border-left: 3px solid var(--cert-blue);
-  font-size: 12px;
-  color: var(--cert-g900);
-  line-height: 1.5;
-
-  fa-icon {
-    color: var(--cert-blue);
-    flex-shrink: 0;
-    margin-top: 1px;
-  }
-
-  ul {
-    margin: 6px 0 0;
-    padding-left: 18px;
-  }
-
-  li + li {
-    margin-top: 4px;
-  }
-
-  &--warn {
-    background: color-mix(in srgb, var(--cert-amber) 8%, transparent);
-    border-left-color: var(--cert-amber);
-
-    fa-icon {
-      color: var(--cert-amber);
-    }
-  }
-}
-
-/* The quarter table nested inside an expanded row. */
-.cert-table--inner {
-  background: #fff;
-  border: 1px solid var(--cert-g200);
-  border-radius: 8px;
-  overflow: hidden;
-  margin-bottom: 10px;
-
-  th {
-    background: #fff;
-    border-bottom: 1px solid var(--cert-g200);
-  }
-
-  .cert-pill {
-    margin-left: 6px;
-  }
-}