feat: complete UI redesign — client creation tabs, footer, home page, CIF & occupation fields

- Client creation: replaced vertical stepper with 3-tab layout (General, KYC & Nominee, Preview)
- All form fields redesigned with appearance="outline" and section grouping
- Preview tab with profile card, info tables, KYC details, family members
- Footer redesigned: security bar, LincShield certifications, regulatory & legal, quick navigation, support & contact, LincPay branding
- Home page redesigned: welcome banner, quick action cards, info row
- Client view header redesigned: ID chips row (Account No, CIF Number, External Id), 4-column details grid
- Added CIF Number column to clients list table
- Added CIF Number display to client view sidebar and personal data tab
- Added occupationCategoryId and occupationId dropdowns to client creation form
- Added occupation fields to client view sidebar, personal data tab, and preview
- Added 51+ missing translation keys to en-US.json
- Toolbar: added Last login chip
- Registered faUserPlus icon

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

src/main.scss

@@ -938,3 +938,22 @@ mat-card {
     margin: 1.5cm;
   }
 }
+
+/* ─── Ensure mat-menu overlays appear above header ─── */
+.cdk-overlay-container {
+  z-index: 1001 !important;
+}
+
+/* ─── CRR/SLR Dialog Panel ─── */
+.crr-slr-dialog-panel {
+  .mat-mdc-dialog-container {
+    padding: 0;
+    border-radius: 16px;
+    overflow: hidden;
+  }
+
+  .mat-mdc-dialog-surface {
+    padding: 0 !important;
+    border-radius: 16px !important;
+  }
+}